Workpiece surface defect detection device based on visual sensing

Abstract

The invention relates to the technical field of visual inspection, and discloses a workpiece surface defect detection device based on visual sensing, which comprises a detection assembly, a cleaning assembly mounted on the detection assembly, a purging assembly mounted on the cleaning assembly, and a deburring assembly arranged on the cleaning assembly, the cleaning assembly comprises a sliding plate, a brush is fixedly connected to the upper surface of the sliding plate, a moving part is fixedly connected to the lower bottom face of the sliding plate, a fixing plate is arranged on one side of the sliding plate, and a spring is elastically connected between the sliding plate and the fixing plate. The blowing assembly comprises an air bag, the output end of the air bag is in threaded connection with two sets of air pipes, one set of air pipes communicate with the blowing frame, the sliding plate and the moving part are driven to move through the conveying belt, the moving part can conduct reset operation under operation of the spring, and therefore the detection camera lens is cleaned.

Description

Technical Field

[0001] The present invention relates to the field of visual detection technology, and in particular to a workpiece surface defect detection device based on visual sensing. Background Art

[0002] Visual inspection captures the target object through an image acquisition device (such as a CMOS or CCD camera), converts the image signal into a digital signal, and then the image processing system analyzes and processes these signals to identify the characteristics of the target and make corresponding judgments. Visual inspection technology is becoming an indispensable part of industrial automation and intelligent manufacturing with its high efficiency, high accuracy and broad application prospects.

[0003] Publication No. CN115219505A discloses a surface defect detection device based on visual inspection, including a conveyor, a gantry and a visual inspection device; the conveyor, the conveyor belt is provided with two rollers supporting the conveyor belt at both ends, the support plate is provided under the conveyor belt for supporting the conveyor belt, the rollers and the support plate are provided on a bracket, and a binocular stereoscopic vision picture is generated by subsequent superposition, so that the shape and spatial relationship of the surface are superimposed and recognized, thereby improving the detection accuracy and production efficiency, and the detection workpiece is specifically a plate material, and the above-mentioned surface defect detection device based on visual inspection has the following problems: The device is not designed with a cleaning device for the camera. When the camera works for a long time, dust will adhere to the lens, which will affect the inspection of the workpiece and cause some errors in the inspection.

[0004] After the sheet metal workpiece is processed, it needs to be cut, and burrs will be generated at the cutting position. Later, the sheet metal workpiece needs to be deburred separately, which simply increases the workload.

[0005] Therefore, there is a need for a workpiece surface defect detection device based on visual sensing. Summary of the invention

[0006] In order to solve all or part of the above problems, the purpose of the present invention is to provide a workpiece surface defect detection device based on visual sensing, which automatically cleans the lens of the camera and blows the lens and brush after cleaning, thereby further increasing the cleaning effect and avoiding the final detection result being affected by dust adhering to the lens. At the same time, it can also perform simple deburring operations on the workpiece.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a workpiece surface defect detection device based on visual sensing, comprising a detection component, a cleaning component is installed on the detection component, a purge component is installed on the cleaning component, and a deburring component is arranged on the cleaning component, the detection component comprises a mounting frame, a conveyor belt is installed on the mounting frame, a plurality of groups of blocks are fixedly connected to the outer surface of the conveyor belt, one end of the conveyor belt is fixedly connected to the output end of the motor, the motor is arranged on one side of the mounting frame, a cylinder is arranged next to the motor, the cylinder is fixedly installed on one side of the mounting frame, a detection frame is fixedly connected to the upper surface of the mounting frame, a light frame is installed on the detection frame, a detection camera is fixedly installed on the top of the detection frame, and the cylinder and the detection camera are both connected to the The detection camera is connected to the outside world, a purge ring is installed at the lower end, the detection camera is arranged above the conveyor belt, the cleaning component includes a slide plate, the slide plate is installed on the detection frame, a brush is fixedly connected to the upper surface of the slide plate, a moving part is fixedly connected to the lower bottom surface of the slide plate, a fixed plate is arranged on one side of the slide plate, the fixed plate is fixedly installed on the inner wall of the detection frame, a spring is elastically connected between the slide plate and the fixed plate, the purge component includes an airbag, one end of the airbag is movably connected to the slide plate, the other end of the airbag is movably connected to the fixed plate, two groups of air pipes are threadedly connected to the output end of the airbag, one group of air pipes is connected to the purge frame, the purge frame is hollow inside and the output end is inclined downward toward the direction of the airbag, the purge frame is arranged on the upper surface of the lamp frame, and the other group of air pipes is connected to the purge ring.

[0008] Preferably, the burr assembly includes a connecting rod, which is fixedly mounted on the bottom surface of the slide, and two groups of connecting rods are provided and symmetrically arranged, and a grinding stone is fixedly connected to one side of the connecting rod; Used to remove burrs on the workpiece surface and reduce the intensity of subsequent processing.

[0009] Preferably, the bottom surface of the mounting frame is fixedly connected with legs, four groups of legs are provided and the lower ends of the legs are fixedly connected with universal wheels; It is used to support the entire device and facilitate the staff to move the entire device and transport the entire device to the designated location.

[0010] Preferably, a material discharge slide is fixedly connected to the other side of the mounting frame, and the material discharge slide is arranged opposite to the cylinder; It is used to facilitate the cylinder to directly push the defective workpiece away from the conveyor belt.

[0011] Preferably, the card blocks are provided in two groups and are symmetrically arranged, one side of the card blocks is provided as an inclined surface, and a groove is provided on the card blocks; Used to clamp the roller through the groove, thereby dragging the entire moving part to move.

[0012] Preferably, the detection frame is provided with a guide groove, and guide blocks are fixedly connected to both sides of the slide plate, and the outer surface of the guide block is slidably connected to the guide groove; It is used to guide the skateboard to prevent it from deviating during movement and moving away from the set movement trajectory.

[0013] Preferably, a lighting lamp is installed on the bottom surface of the lamp holder; It is used to provide lighting for the inspection workpiece, making it easier for the inspection camera to perform inspection operations.

[0014] Preferably, the purge ring is configured as a hollow structure, and a ventilation hole is provided on the purge ring, and a filter is provided in the ventilation hole; It is used to clean the lens of the detection camera and prevent dust from entering the air pipe during the airbag's inhalation process.

[0015] Preferably, the moving member comprises a telescopic rod, the telescopic rod is provided in two groups and is symmetrically arranged, and a roller is fixedly connected to the lower end of the telescopic rod; When the clamping block drags the moving part to a set position, the telescopic rod and the roller cooperate with each other to make the moving part detach from the clamping block.

[0016] Preferably, the air pipe is specifically a corrugated pipe; It is used to enable the air pipe to cooperate with the moving parts to perform telescopic operations.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a workpiece surface defect detection device based on visual sensing. By setting a cleaning component, the movement of the conveyor belt drives the movement of the card block, and then the roller is clamped by the groove on the card block, thereby dragging the entire moving part to move. During the movement, the lens is cleaned by a brush.

[0018] The present invention proposes a workpiece surface defect detection device based on visual sensing. By setting a purge component, an air bag is pulled to perform a suction operation during the movement of a moving part. When the moving part moves to the set position, it detaches from the clamping block and, under the operation of the spring, causes the brush to compress the air bag so that the gas in the air bag is discharged from the air pipe, and a purge operation is performed on the brush and the lens, thereby further cleaning the lens. When the slide plate is reset under the action of the spring, it also pulls the connecting rod to move. During the movement of the connecting rod, the plate workpiece is deburred by the grinding stone. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a workpiece surface defect detection device based on visual sensing of the present invention; Figure 2 It is a schematic diagram of the overall structure of a detection component of a workpiece surface defect detection device based on visual sensing according to the present invention; Figure 3It is a schematic diagram of the overall structure of a detection frame and a purge assembly of a workpiece surface defect detection device based on visual sensing according to the present invention; Figure 4 It is a schematic diagram of the overall structure of a cleaning component of a workpiece surface defect detection device based on visual sensing according to the present invention; Figure 5 It is a schematic diagram of the overall structure of a purge assembly of a workpiece surface defect detection device based on visual sensing according to the present invention; Figure 6 It is a schematic diagram of the overall structure of a detection frame of a workpiece surface defect detection device based on visual sensing according to the present invention; Figure 7 It is a schematic diagram of the overall structure of a card block of a workpiece surface defect detection device based on visual sensing according to the present invention; Figure 8 It is a cross-sectional schematic diagram of a purge ring of a workpiece surface defect detection device based on visual sensing according to the present invention; In the figure: 1. Detection component; 11. Mounting frame; 111. Support leg; 112. Universal wheel; 113. Unloading slide; 12. Conveyor belt; 13. Block; 131. Inclined surface; 132. Groove; 14. Motor; 15. Cylinder; 16. Detection frame; 161. Guide groove; 17. Light frame; 171. Lighting lamp; 18. Detection camera; 19. Purge ring; 191. Ventilation hole; 192. Filter; 2. Cleaning component; 21. Slide plate; 211. Guide block; 22. Brush; 23. Moving part; 231. Telescopic rod; 232. Roller; 24. Fixed plate; 25. Spring; 3. Purge component; 31. Air bag; 32. Air pipe; 33. Purge frame; 4. Deburring component; 41. Connecting rod; 42. Grinding stone. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 8As shown, an embodiment of the present invention is: a workpiece surface defect detection device based on visual sensing, comprising a detection component 1, a cleaning component 2 is installed on the detection component 1, a purge component 3 is installed on the cleaning component 2, and a deburring component 4 is arranged on the cleaning component 2, the detection component 1 comprises a mounting frame 11, a conveyor belt 12 is installed on the mounting frame 11, and the workpiece to be detected is conveyed, and the outer surface of the conveyor belt 12 is fixedly connected with a plurality of groups of card blocks 13, which cooperate with the moving part 23 to drag the moving part 23 to perform displacement operation, and one end of the conveyor belt 12 is fixedly connected with a motor 14 At the output end, the conveyor belt 12 is powered by the motor 14. The motor 14 is arranged on one side of the mounting frame 11. A cylinder 15 is arranged next to the motor 14 to push the workpiece with defects detected from the conveyor belt 12. The cylinder 15 is fixedly installed on one side of the mounting frame 11. A detection frame 16 is fixedly connected to the upper surface of the mounting frame 11 to facilitate the installation of a detection camera 18. A light frame 17 is installed on the detection frame 16. A detection camera 18 is fixedly installed on the top of the detection frame 16 to perform detection operations on the workpiece. The cylinder 15 and the detection camera 18 are both connected to an external control unit. The detection camera 1 A purge ring 19 is installed at the lower end of 8 to purge the lens of the detection camera 18. The detection camera 18 is arranged above the conveyor belt 12. The cleaning component 2 includes a slide plate 21, which is installed on the detection frame 16. A brush 22 is fixedly connected to the upper surface of the slide plate 21 to clean the lens of the detection camera 18. A moving part 23 is fixedly connected to the lower bottom surface of the slide plate 21 to drive the slide plate 21 to move. A fixed plate 24 is arranged on one side of the slide plate 21. The fixed plate 24 is fixedly installed on the inner wall of the detection frame 16. A spring is elastically connected between the slide plate 21 and the fixed plate 24. 25, so that the slide plate 21 is reset, the purge assembly 3 includes an air bag 31, which stores gas. One end of the air bag 31 is movably connected to the slide plate 21, and the other end of the air bag 31 is movably connected to the fixed plate 24. The output end of the air bag 31 is threadedly connected with two groups of air pipes 32 to transport the gas stored in the air bag 31. One group of air pipes 32 is connected to a purge rack 33. The purge rack 33 is hollow inside and the gas output end is inclined downward toward the direction of the air bag 31. The purge rack 33 is set on the upper surface of the lamp holder 17 to purge the dust attached to the brush 22. Another group of air pipes 32 is connected to the purge ring 19.

[0022] The burr assembly 4 includes a connecting rod 41, which is fixedly mounted on the bottom surface of the slide 21. The connecting rod 41 is provided with two groups and is symmetrically arranged. A grinding stone 42 is fixedly connected to one side of the connecting rod 41 to perform a simple cleaning operation on the burrs on the surface of the detection workpiece, thereby reducing the workload of subsequent processing. The bottom surface of the mounting frame 11 is fixedly connected to a support leg 111 to support the entire device so that it can perform the detection operation normally. The support leg 111 is provided with four groups and the lower end of the support leg 111 is fixedly connected to a universal wheel 112, which is convenient for the staff to The entire device moves, and a feed chute 113 is fixedly connected to the other side of the mounting frame 11. The feed chute 113 is arranged opposite to the cylinder 15, so that the cylinder 15 can directly push the defective workpiece off the conveyor belt 12, and the motor 14 can be conveniently installed at the designated position so that it can work normally. There are two groups of card blocks 13 and they are symmetrically arranged. One side of the card block 13 is arranged as an inclined surface 131, so that the roller 232 can roll into the groove 132 conveniently, and the card block 13 is provided with a groove 132 to limit the operation of the roller 232.

[0023] The detection frame 16 is provided with a guide groove 161, and guide blocks 211 are fixedly connected on both sides of the slide plate 21. The outer surface of the guide block 211 is slidably connected to the guide groove 161 to guide the slide plate 21 to prevent it from deviating from the set motion trajectory during the movement. A lighting lamp 171 is installed on the bottom surface of the lamp frame 17 to illuminate the entire device. The surface detection device cannot be normally performed due to light reasons. The purge ring 19 is set to a hollow structure, and a ventilation hole 191 is provided on the purge ring 19. There is a ventilation hole 191 in the ventilation hole The filter 192 enables the purge ring 19 to purge the lens of the detection camera 18 to make the cleaning more thorough. The movable part 23 includes a telescopic rod 231. The telescopic rod 231 is provided with two groups and is symmetrically arranged. The lower end of the telescopic rod 231 is fixedly connected with a roller 232, so that the movable part 23 can be easily separated from the block 13 and reset under the action of the spring 25. The air pipe 32 is specifically a corrugated pipe, so that the air pipe 32 has a certain range of motion, thereby ensuring that the air pipe 32 can work stably during the operation of the device.

[0024] Working principle: First, the motor 14 drives the conveyor belt 12 to perform the conveying operation, and the conveyor belt 12 transports the workpiece to be inspected to the inspection frame 16, and then the inspection operation is performed through the inspection camera 18, and the inspection camera 18 sends the inspection structure to the terminal for analysis. When the analysis structure is a defective product, the cylinder 15 is started to push the defective piece away from the conveyor belt 12.

[0025] The conveyor belt 12 will simultaneously drive the block 13 to move during the movement, and then the roller 232 will move along the inclined surface 131, and finally the roller 232 will be stuck in the groove 132, and then the block 13 will pull the moving part 23 to move, and synchronously drive the slide plate 21 and the brush 22 to move. During the movement, the brush 22 will clean the lens of the detection camera 18, and during the movement of the slide plate 21, it will pull the air bag 31 to perform the suction operation. When the slide plate 21 moves to the set position, it will stop moving, but the groove 132 still applies a pulling force to the roller 232, so that the telescopic rod 231 shrinks, and the roller 232 falls off the groove 132, and the slide plate 21 is reset under the operation of the spring 25, and the air bag 3 is compressed during the reset process. 1, so that the gas in the airbag 31 is transported to the purge ring 19 and the purge rack 33 through one group of air pipes 32, the purge ring 19 purges the lens of the detection camera 18, and at the same time, another group of air pipes 32 is used to supply air to the purge rack 33, and the purge rack 33 is used to purge the brush 22 to blow away the dust on the brush 22, and during the resetting process, the brush 22 cleans the lens of the detection camera 18 again, and the airbag 31 keeps supplying air to the purge ring 19 until the slide plate 21 is reset. At the same time, during the resetting process of the slide plate 21, the connecting rod 41 is also driven to reset, so that the grinding stone 42 is driven to move through the connecting rod 41 to deburr the surface of the workpiece, thereby reducing the subsequent workload.

[0026] It should be noted that, in the description of the present application, it should be understood that the terms "length", "thickness", "inside", "outside", "axial", "radial", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In addition, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A workpiece surface defect detection device based on visual sensing, comprising a detection component (1), a cleaning component (2) mounted on the detection component (1), a purge component (3) mounted on the cleaning component (2), and a deburring component (4) disposed on the cleaning component (2), characterized in that: The detection component (1) comprises a mounting frame (11), a conveyor belt (12) is mounted on the mounting frame (11), a plurality of groups of blocks (13) are fixedly connected to the outer surface of the conveyor belt (12), one end of the conveyor belt (12) is fixedly connected to the output end of a motor (14), the motor (14) is arranged on one side of the mounting frame (11), a cylinder (15) is arranged next to the motor (14), the cylinder (15) is fixedly mounted on one side of the mounting frame (11), a detection frame (16) is fixedly connected to the upper surface of the mounting frame (11), a light frame (17) is mounted on the detection frame (16), a detection camera (18) is fixedly mounted on the top of the detection frame (16), the cylinder (15) and the detection camera (18) are both connected to an external control unit, a purge ring (19) is installed at the lower end of the detection camera (18), and the detection camera (18) is arranged above the conveyor belt (12). The cleaning component (2) comprises a slide plate (21), the slide plate (21) is installed on the detection frame (16), the upper surface of the slide plate (21) is fixedly connected with a brush (22), the lower bottom surface of the slide plate (21) is fixedly connected with a moving part (23), a fixed plate (24) is arranged on one side of the slide plate (21), the fixed plate (24) is fixedly installed on the inner wall of the detection frame (16), a spring (25) is elastically connected between the slide plate (21) and the fixed plate (24), the purge assembly (3) comprises an air bag (31), one end of the air bag (31) is movably connected to the slide plate (21), the other end of the air bag (31) is movably connected to the fixed plate (24), two groups of air pipes (32) are threadedly connected to the output end of the air bag (31), one group of the air pipes (32) is connected to the purge frame (33), the purge frame (33) is hollow inside and the output end is inclined downward toward the direction of the air bag (31), the purge frame (33) is arranged on the upper surface of the lamp frame (17), and the other group of the air pipes (32) is connected to the purge ring (19).

2. A workpiece surface defect detection device based on visual sensing as claimed in claim 1, characterized in that: The burr assembly (4) comprises a connecting rod (41), the connecting rod (41) being fixedly mounted on the bottom surface of the slide plate (21), two groups of connecting rods (41) being arranged symmetrically, and a grinding stone (42) being fixedly connected to one side of the connecting rod (41).

3. A workpiece surface defect detection device based on visual sensing as claimed in claim 1, characterized in that: The lower surface of the mounting frame (11) is fixedly connected to a support leg (111), four groups of the support legs (111) are provided, and the lower ends of the support legs (111) are fixedly connected to a universal wheel (112).

4. A workpiece surface defect detection device based on visual sensing as claimed in claim 1, characterized in that: A material discharge slide (113) is fixedly connected to the other side of the mounting frame (11), and the material discharge slide (113) is arranged opposite to the cylinder (15).

5. The workpiece surface defect detection device based on visual sensing as claimed in claim 1, characterized in that: The clamping blocks (13) are provided in two groups and are symmetrically arranged; one side of the clamping blocks (13) is provided with an inclined surface (131), and a groove (132) is provided on the clamping blocks (13).

6. The workpiece surface defect detection device based on visual sensing as claimed in claim 1, characterized in that: The detection frame (16) is provided with a guide groove (161), and guide blocks (211) are fixedly connected to both sides of the slide plate (21), and the outer surfaces of the guide blocks (211) are slidably connected to the guide groove (161).

7. The workpiece surface defect detection device based on visual sensing as claimed in claim 1, characterized in that: A lighting lamp (171) is installed on the lower surface of the lamp holder (17).

8. The workpiece surface defect detection device based on visual sensing as claimed in claim 1, characterized in that: The purge ring (19) is configured as a hollow structure, and a ventilation hole (191) is provided on the purge ring (19), and a filter screen (192) is provided in the ventilation hole (191).

9. The workpiece surface defect detection device based on visual sensing as claimed in claim 1, characterized in that: The moving member (23) comprises a telescopic rod (231), wherein two groups of the telescopic rods (231) are provided and are symmetrically arranged, and a roller (232) is fixedly connected to the lower end of the telescopic rod (231).

10. The workpiece surface defect detection device based on visual sensing according to claim 1, characterized in that: The air pipe (32) is specifically a corrugated pipe.

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