Visual detection and automatic marking device for full circumferential surface defects of steel-plastic pipe

Abstract

The application discloses a steel-plastic pipe full-circumferential surface defect visual detection and automatic marking device and belongs to the technical field of pipe detection and marking devices.The device comprises a material guiding adjusting mechanism, the material guiding adjusting mechanism comprises a material guiding box fixed on a frame and provided with a tapered opening, a first motor is fixedly installed on one side of the outer wall of the material guiding box, the output shaft of the first motor is fixedly connected to a rotating wheel in the interior of the material guiding box, the outer wall of the rotating wheel is provided with annularly distributed baffles, and a first quantitative area for a plurality of steel-plastic pipes to pass through is arranged between the baffles; the output shaft of the first motor and a first rotating shaft are transmissionally connected through a conveying belt; and the first rotating shaft is fixed at one end on a first bevel gear.The application can solve the technical problem that once the steel-plastic pipes in the material guiding box are relatively many, the material guiding groove in the interior of the material guiding box is prone to extrusion and blockage, the normal conveying work of the steel-plastic pipes is affected, and personnel operation is not facilitated.

Description

Technical Field

[0001] This invention belongs to the technical field of pipe inspection and marking devices, specifically relating to a visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes. Background Technology

[0002] Steel-plastic composite pipes are industrial composite pipes that use seamless or welded steel pipes as the base pipe and apply a layer of plastic such as polyethylene or epoxy resin to the inner wall or outer surface through lining or coating processes. The core function of steel-plastic composite pipes is to combine the strength of steel pipes with the corrosion resistance, hygiene, and scale resistance of plastic pipes, and they are mainly used in fluid transportation applications.

[0003] Before visual inspection, steel-plastic composite pipes often need to be stably conveyed by a material guide rotating device. However, if there are too many steel-plastic composite pipes in the guide box, the material guide groove inside the guide box is prone to compression and blockage, affecting the normal conveying of steel-plastic composite pipes. The guide port needs to be cleared manually, which is not conducive to personnel operation. Moreover, the material guide device cannot effectively handle the quantitative conveying of steel-plastic composite pipes, that is, it cannot selectively change the conveying amount of steel-plastic composite pipes according to actual production needs, which is not conducive to improving work efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes, in order to solve the technical problem that when there are many steel-plastic pipes in the guide box, the guide groove inside the guide box is easily squeezed and blocked, which affects the normal conveying of steel-plastic pipes and requires manual clearing of the guide port, which is not conducive to personnel operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes, including: The material guiding adjustment mechanism includes a material guiding box fixed on a frame and having a conical opening. A first motor is fixedly installed on one side of the outer wall of the material guiding box. The output shaft of the first motor is fixedly connected to a rotating wheel inside the material guiding box. The outer wall of the rotating wheel is provided with annularly distributed baffles. A first quantitative area for several steel-plastic pipes to pass through is provided between the baffles. The output shaft of the first motor and the first rotating shaft are connected by a conveyor belt. One end of the first rotating shaft is fixed on the first bevel gear. The outer wall of the first bevel gear meshes with a second bevel gear fixed on the second rotating shaft. The outer wall of the second rotating shaft is provided with a lever placed between the conical opening and the receiving cavity. The lever is symmetrically arranged with respect to the vertical central axis of the guide box.

[0006] Furthermore, the bottom of the baffle plate abuts against the lifting plate, and the lifting plate and the inner wall of the guide box are connected by a compression spring. The lifting plate is arranged in an inverted U-shape, and a fixing rod is installed at the center of the bottom of the lifting plate. The fixing rod and the first baffle plates at both ends are connected by a first swing rod. One end of the first baffle plate is fixed to the first gear plate, and the outer wall of the first gear plate moves in the opposite direction through the meshing of the first rotating teeth to the second gear plate.

[0007] Furthermore, one end of the second gear plate is fixed to the second baffle plate, and the first baffle plate, the second baffle plate and the inner wall of the guide box together form a second quantitative area. Both ends of the first swing rod are equipped with a fixed rod and the first baffle plate by means of rotational connection.

[0008] Furthermore, the frame is provided with a conveyor line along its length, which is used to carry and convey the steel-plastic pipe.

[0009] Furthermore, it also includes a detection marking mechanism placed on the frame. The detection marking mechanism includes a second motor placed on the side plate. The output shaft of the second motor extends sequentially to the rotating plate and the turntable. A camera is installed on the outer wall of the rotating plate on the side away from the output shaft of the second motor. The protrusion on the turntable and the moving rod are connected by a second swing rod.

[0010] Furthermore, a limiting groove is provided on the outer wall of the movable rod to connect with the side plate, and the movable rods are fixedly connected by a crossbeam. A cleaning brush that contacts the steel-plastic pipe is fixedly installed at the extended end of the bottom of the crossbeam, and the cleaning brush is installed with a brush plate by adhesive fixation.

[0011] Furthermore, one end of the moving rod is connected to a third gear plate that penetrates the interior of the housing via a bending rod. The outer wall of the third gear plate is meshed with a second rotating tooth. The central shaft on the second rotating tooth is equipped with an abutment plate that is limited and connected to the steel-plastic pipe. The outer wall of the housing is fixed to the side plate by a detachable installation method, and a guide groove is provided on the housing for the third gear plate to move horizontally.

[0012] Furthermore, the camera is used to transmit the image signal of the steel-plastic pipe surface to the processor, the processor is used to receive the image signal and output the control signal, and the processor is electrically connected to the cylinder to drive the piston rod on the cylinder to move the marking pen up and down.

[0013] Furthermore, the cylinder and the U-shaped plate on the frame are connected by locking with positioning pins, and the marker pen and the piston rod on the cylinder are connected by a panel, on which a positioning groove for connecting with the marker pen is provided.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) In this invention, automatic transmission, quantitative control and precise delivery of steel-plastic pipes are realized through the material guiding adjustment mechanism and the matching mechanical transmission system. This system ensures the stability and consistency of steel-plastic pipes in the detection and marking process by precisely adjusting the transmission speed and quantitative area of ​​the steel-plastic pipes, reducing manual intervention and improving work efficiency and accuracy.

[0015] (2) In this invention, by setting up a material guiding adjustment mechanism, adopting a first motor to synchronously drive the rotating wheel, the toggle rod and the graded quantitative shielding plate structure, it is possible to realize the quantitative and orderly feeding of steel-plastic pipes and automatic centering guidance and reverse toggle to prevent squeezing, avoiding stacking, squeezing, collision and scratching of multiple pipes; with the lifting plate and compression spring forming a flexible material drop buffer, it can effectively reduce the impact damage of the pipes, and at the same time ensure that the pipes enter the inspection station in a uniform posture, providing a stable and consistent inspection benchmark for subsequent visual inspection, and significantly improving the smoothness and reliability of equipment operation.

[0016] (3) In this invention, a cleaning brush system is added to the marking mechanism of the device. The cleaning brush, which is fixedly connected to the moving rod and the crossbeam, can effectively clean the surface of the steel-plastic pipe and prevent dust, stains and other contaminants from affecting the image acquisition quality. The design of the cleaning brush not only helps to improve the detection accuracy, but also reduces the frequency of equipment maintenance and extends the service life of the equipment, thereby optimizing the overall operating efficiency. The rotating camera realizes multi-angle scanning of the pipe, and the follow-up cleaning brush removes surface dust, water stains and debris in advance, which greatly reduces the visual false detection rate. At the same time, the gear transmission realizes the adaptive limit adjustment of the contact plate, so that the steel-plastic pipe is transported in an orderly manner and avoids affecting the recognition effect. Combined with the closed-loop control of image acquisition, processor analysis and cylinder-driven marking, defects can be quickly identified and real-time marking can be completed. The device is modular and detachable, and the replacement of vulnerable parts is convenient. It can be quickly adapted to the detection of steel-plastic pipes, which greatly improves the efficiency of factory quality inspection and the product qualification rate.

[0017] (4) By installing the cylinder on the U-shaped plate and locking it with the positioning pin, and by installing and positioning the marking pen through the panel and positioning groove, the marking mechanism is stably assembled and easy to disassemble and assemble. This ensures the directional stability and accuracy of the marking pen during the up-and-down reciprocating motion, thereby improving the reliability of defect marking and facilitating the later maintenance, replacement and repair of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to the present invention. Figure 2 ; Figure 3 This is a front view of the device for visual inspection and automatic marking of surface defects around the entire circumference of steel-plastic pipes according to the present invention; Figure 4 This is a schematic diagram of the interior of the feed box of the present invention; Figure 5 This is a schematic diagram of the meshing transmission of the first rotating tooth of the present invention; Figure 6 This is a schematic diagram of the meshing transmission of the first bevel gear and the second bevel gear of the present invention; Figure 7 This is a schematic diagram showing the connection between the actuating lever and the guide box of the present invention; Figure 8 This is a schematic diagram of the meshing transmission of the third gear plate and the second rotating tooth of the present invention; Figure 9 This is a schematic diagram of the connection between the moving rod and the flipping rod in an embodiment of the present invention.

[0020] Reference numerals: 1. Material guiding adjustment mechanism; 2. Material guide box; 3. First motor; 4. Rotating wheel; 5. Baffle; 6. First quantitative zone; 7. First rotating shaft; 8. Conveyor belt; 9. First bevel gear; 10. Second rotating shaft; 11. Second bevel gear; 12. Actuating lever; 13. Lifting plate; 14. Compression spring; 15. Fixed rod; 16. First baffle plate; 17. First swing rod; 18. First gear plate; 19. First rotating gear; 2 0. Second gear plate; 21. Second shielding plate; 22. Second quantitative area; 23. Conveyor line; 24. Detection and marking mechanism; 25. Second motor; 26. Rotating plate; 27. Turntable; 28. Camera; 29. ​​Moving rod; 30. Second swing rod; 31. Cleaning brush; 32. Housing; 33. Third gear plate; 34. Second rotating gear; 35. Contact plate; 36. Cylinder; 37. Marking pen; 38. U-shaped plate; 39. Flipping rod. Detailed Implementation

[0021] 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.

[0022] Reference manual attached Figure 1 -Appendix Figure 8 As shown, this embodiment provides a visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes, including a material guiding and adjusting mechanism 1, a conveyor line 23, and an inspection and marking mechanism 24 set on a frame.

[0023] The material guiding and adjusting mechanism 1 includes a material guiding box 2 fixedly installed on a frame. The material guiding box 2 has a conical opening for centralized feeding of steel-plastic pipes. A first motor 3 is fixedly installed on one side of the outer wall of the material guiding box 2. The output shaft of the first motor 3 is connected to a rotating wheel 4 located inside the material guiding box 2. The outer wall of the rotating wheel 4 is provided with ring-shaped baffles 5, and a first quantitative area 6 for several steel-plastic pipes to pass through is formed between adjacent baffles 5. During operation, the first motor 3 drives the rotating wheel 4 to rotate, and the baffles 5 separate and quantitatively feed the steel-plastic pipes entering the material guiding box 2 to avoid accumulation, blockage, or disorderly entry of the steel-plastic pipes during the feeding process.

[0024] The lower part of the guide box 2 is provided with a receiving cavity communicating with the conical opening. The receiving cavity is used to receive the steel-plastic pipes after initial separation by the baffle 5 and guide the steel-plastic pipes to the sorting area where the actuating rod 12 is located. The actuating rod 12 is located between the conical opening and the receiving cavity to disperse, guide and buffer the steel-plastic pipes, reducing the squeezing and jamming caused when multiple steel-plastic pipes fall at the same time. Preferably, the first quantitative area 6 is used for initial material separation of the steel-plastic pipes, and the second quantitative area 22 is used for secondary quantity restriction of the steel-plastic pipes, so that the minimum effective passage width of the second quantitative area 22 is greater than the outer diameter of a single steel-plastic pipe and less than the total width of two steel-plastic pipes passing side by side, thereby prompting the steel-plastic pipes to enter the conveyor line 23 one by one.

[0025] Furthermore, the output shaft of the first motor 3 is connected to the first rotating shaft 7 via a conveyor belt 8. A first bevel gear 9 is fixed to one end of the first rotating shaft 7, and the first bevel gear 9 meshes with a second bevel gear 11 fixed to the second rotating shaft 10. A lever 12 is provided on the outer wall of the second rotating shaft 10. The lever 12 is located between the conical opening and the receiving cavity, and is symmetrically arranged relative to the vertical central axis of the guide box 2. Through this structure, while driving the rotating wheel 4, the first motor 3 can also drive the second rotating shaft 10 to rotate via the conveyor belt 8, the first bevel gear 9, and the second bevel gear 11, causing the lever 12 to move and organize the steel-plastic pipes, thereby further improving the orderliness and continuity of the steel-plastic pipes entering subsequent workstations.

[0026] The first motor 3 is a servo motor that can perform forward and reverse rotation. When it rotates forward, it can drive the baffle 5 to rotate clockwise to achieve quantitative conveying. Under the action of gear meshing, the actuating rods 12 on the second rotating shafts 10 at both ends rotate in opposite directions and downward synchronously. This effectively guides and conveys the falling steel-plastic pipes to prevent squeezing. When the baffle 5 rotates counterclockwise to achieve quantitative conveying, under the action of gear meshing, the actuating rods 12 on the second rotating shafts 10 at both ends rotate in opposite directions and upward synchronously. This effectively moves and organizes the squeezed steel-plastic pipes, allowing the squeezed steel-plastic pipes to disperse.

[0027] To improve the quantitative control effect, in this embodiment, the bottom of the baffle 5 abuts against the lifting plate 13, and the lifting plate 13 is connected to the inner wall of the guide box 2 by a compression spring 14. The lifting plate 13 is arranged in an inverted U-shape, and a fixed rod 15 is installed at the center of its bottom. The fixed rod 15 is connected to the first shielding plates 16 at both ends by a first swing rod 17. One end of the first shielding plate 16 is fixed to the first gear plate 18. The outer wall of the first gear plate 18 is driven by a second gear plate 20 that moves in the opposite direction through the meshing of the first rotating teeth 19. One end of the second gear plate 20 is fixed to a second shielding plate 21. The first shielding plate 16, the second shielding plate 21, and the inner wall of the guide box 2 together form the second quantitative area 22. Both ends of the first swing rod 17 are mounted on the fixed rod 15 and the first shielding plate 16 by a rotatable connection.

[0028] In actual operation, when the steel-plastic pipe falls or passes through the first quantitative zone 6, it exerts pressure on the lifting plate 13, causing the lifting plate 13 to displace under the elastic action of the compression spring 14, thereby driving the fixed rod 15 to move. The fixed rod 15 drives the first baffle plate 16 to move via the first swing rod 17. The first baffle plate 16 then drives the second baffle plate 21 to move in the opposite direction via the first gear plate 18, the first rotating gear 19, and the second gear plate 20, thereby dynamically adjusting the opening size of the second quantitative zone 22. This enables secondary quantitative control of the steel-plastic pipe, further ensuring that the steel-plastic pipe enters the conveyor line 23 one by one and in an orderly manner, improving the stability of subsequent testing.

[0029] A conveyor line 23 is provided along the length of the frame, which is used to carry and transport the steel-plastic pipe. After being sorted and metered by the material guiding and adjusting mechanism 1, the steel-plastic pipe enters the conveyor line 23 and moves towards the detection marking area under the drive of the conveyor line 23.

[0030] Furthermore, the frame is provided with mounting side plates on both sides of the conveyor line 23. The mounting side plates are used to mount the guide structure of the second motor 25, the moving rod 29, the housing 32, and the support components related to the marking mechanism. By mounting the main actuators of the detection and marking mechanism 24 on the two mounting side plates, a relatively stable mounting reference can be provided for the camera 28, cleaning brush 31, contact plate 35, and marking pen 37, so as to ensure that the spatial positional relationship of each component remains consistent during the detection and marking process.

[0031] In this embodiment, the detection marking mechanism 24 is mounted on the frame. The detection marking mechanism 24 includes a second motor 25 mounted on the side plate. The output shaft of the second motor 25 extends sequentially to the rotating plate 26 and the turntable 27. A camera 28 is mounted on the outer wall of the rotating plate 26 away from the output shaft of the second motor 25. The protrusion on the turntable 27 is connected to the moving rod 29 via a second swing rod 30. When the second motor 25 is working, it drives the rotating plate 26 to rotate, thereby causing the camera 28 to rotate above the steel-plastic pipe to acquire images of the outer surface of the steel-plastic pipe. On the other hand, it drives the turntable 27 to rotate and drives the moving rod 29 to reciprocate through the second swing rod 30, so as to realize the linkage of cleaning and limiting related mechanisms.

[0032] Specifically, the outer wall of the movable rod 29 is provided with a limiting groove that connects to the side plate. Multiple movable rods 29 are fixedly connected by a crossbeam. A cleaning brush 31 that contacts the steel-plastic pipe is fixedly installed at the extended end of the bottom of the crossbeam. The cleaning brush 31 is attached to a brush plate by an adhesive method. With this structure, when the second motor 25 drives the turntable 27 to rotate, the movable rod 29 can reciprocate stably under the guidance of the limiting groove. The crossbeam and the cleaning brush 31 below it move synchronously to pre-clean the surface of the steel-plastic pipe in the detection area to remove dust, debris or attached impurities, so as to avoid affecting the image quality captured by the camera 28, thereby improving the accuracy of surface defect identification.

[0033] Furthermore, one end of the moving rod 29 is connected to a third gear plate 33 that penetrates the interior of the housing 32 via a bent rod. A second rotating gear 34 meshes with the outer wall of the third gear plate 33, and an abutment plate 35, which is connected to the steel-plastic pipe for positioning, is mounted on the central shaft of the second rotating gear 34. The outer wall of the housing 32 is fixed to the side plate via a detachable mounting method, and a guide groove is provided on the housing 32 for the horizontal movement of the third gear plate 33. This structure allows the moving rod 29 to drive the abutment plate 35 during movement via the third gear plate 33 and the second rotating gear 34. The abutment plate 35 provides auxiliary positioning and alignment for the steel-plastic pipe, preventing it from shifting or shaking during transport and inspection, thus ensuring the stability and clarity of the images captured by the camera 28. The detachable mounting structure of the housing 32 also facilitates later inspection, replacement, and maintenance.

[0034] To achieve full-coverage image acquisition of the outer surface of the steel-plastic pipe, a flipping mechanism linked to the moving rod 29 is also installed in the detection area. (Combined with attached...) Figure 9 As shown, the flipping mechanism includes a flipping rod 39 located at the other end of the moving rod 29, below and to the side of the steel-plastic pipe on the conveyor line 23. When the second motor 25 drives the moving rod 29 to reciprocate, the flipping rod 39 avoids the steel-plastic pipe as it passes in the forward direction, and applies an upward pushing and flipping force to the steel-plastic pipe during the return stroke, causing the steel-plastic pipe to rotate around its own axis by a predetermined angle, thereby flipping the surface that was not previously in the field of view of the camera 28 into the shooting area of ​​the camera 28. By combining the circumferential shooting of the camera 28 with the flipping of the flipping rod 39, the detection blind spot can be reduced, and step-by-step full-coverage image acquisition of the outer circumferential surface of the steel-plastic pipe can be achieved.

[0035] Camera 28 transmits image signals from the surface of the steel-plastic pipe to the processor. The processor receives the image signals and outputs control signals. The processor is electrically connected to cylinder 36 to drive the piston rod on cylinder 36 to move the marking pen 37 up and down. Specifically, after the steel-plastic pipe is conveyed to the inspection station via conveyor line 23, camera 28 captures a full-circle image of the steel-plastic pipe surface and transmits the collected image information to the processor. The processor analyzes and processes the image. When a defect is detected on the surface of the steel-plastic pipe, the processor outputs a corresponding control signal to cylinder 36. Cylinder 36 then moves the marking pen 37 downward, automatically marking the defect on the surface of the steel-plastic pipe for subsequent manual inspection or sorting.

[0036] In this embodiment, the cylinder 36 and the U-shaped plate 38 on the frame are connected by a locking pin. The marking pen 37 and the piston rod on the cylinder 36 are connected by a panel, which has a positioning groove for connecting to the marking pen 37. Through the cooperation of the U-shaped plate 38 and the positioning pin, the cylinder 36 can be quickly positioned, installed, and securely fixed, preventing it from loosening during frequent operation. The panel and its positioning groove allow for reliable installation and precise positioning of the marking pen 37, ensuring directional stability and accuracy of the marking pen 37 during vertical movement, thus improving the precision of defect marking.

[0037] To improve the accuracy of the marking pen 37, a displacement detection component, preferably an encoder, is connected to the drive roller or driven roller of the conveyor line 23. After identifying a defect, the processor records the longitudinal position Δx of the defect relative to the detection reference point of the camera 28, and calculates the marking trigger time t by combining the fixed distance L between the detection center of the camera 28 and the marking center of the marking pen 37 and the running speed v of the conveyor line 23, where t = (L + Δx) / v. After the trigger time is reached, the processor controls the cylinder 36 to actuate, causing the marking pen 37 to press down at the corresponding defect position to complete the marking. Preferably, the conveyor line 23 stops briefly during the marking process, or the marking pen 37 adopts an elastic contact method to reduce the impact of continuous movement of the steel-plastic pipe on the marking accuracy.

[0038] The working principle of this embodiment is as follows: First, the steel-plastic composite pipes to be tested are placed into the guide box 2. The first motor 3 drives the rotating wheel 4 to rotate, causing the baffle 5 to work in conjunction with the first quantitative zone 6 to initially distribute the steel-plastic composite pipes. Simultaneously, the actuating rod 12 moves and organizes the steel-plastic composite pipes, ensuring they enter the lower area in an orderly manner. Subsequently, the steel-plastic composite pipes act on the lifting plate 13, causing the first baffle 16 and the second baffle 21 to adjust in conjunction, forming the second quantitative zone 22 for further quantitative control of the steel-plastic composite pipes. After quantitative control, the steel-plastic composite pipes enter the conveyor line 23 and are transported to the testing area.

[0039] Within the inspection area, the second motor 25 drives the camera 28 to rotate, acquiring image information of the steel-plastic pipe surface. Simultaneously, the moving rod 29 drives the cleaning brush 31 to clean the steel-plastic pipe surface, while the contact plate 35 limits and stabilizes the pipe. After receiving the image signal from the camera 28, the processor identifies and analyzes surface defects in the steel-plastic pipe. When a defect is detected, the control cylinder 36 actuates, driving the marking pen 37 downwards to automatically mark the defective steel-plastic pipe. This completes the entire process of automatic feeding, quantitative conveying, full-circumference inspection, and automatic defect marking of the steel-plastic pipe.

[0040] Specifically, when the steel-plastic pipe arrives at the inspection area, the second motor 25 drives the rotating plate 26 to rotate, causing the camera 28 to rotate with the plate 26, thereby acquiring clear images from multiple positions and angles to capture surface images. Simultaneously, the turntable 27, via the second swing rod 30, drives the moving rod 29 to move, causing the cleaning brush 31 to clean the surface of the steel-plastic pipe, while the contact plate 35 limits and straightens the pipe. The camera 28 transmits the acquired image signals to the processor, which analyzes and identifies the surface information in the images. When a defect is detected on the surface of the steel-plastic pipe, the processor controls the cylinder 36 to move, causing the marking pen 37 to move down and mark the corresponding section of the pipe. This completes the continuous operation process of the steel-plastic pipe from feeding, sorting, quantitative conveying, surface cleaning, full-circumference inspection, to automatic marking.

[0041] In order to enable the steel-plastic pipe to capture images of its entire circumference, the steel-plastic pipe is flipped over manually on the conveyor line 23 so that the camera 28 can capture images from all directions.

[0042] Refer to the instruction manual. Figure 8 and attached Figure 9 As can be seen, in another embodiment of the present invention, in order to flip the steel-plastic pipe and take pictures from all angles, a cleaning brush 31 and a flipping rod 39 can be provided at both ends of the moving rod 29. One end of the moving rod 29 passes through the side plate and extends to the cleaning brush 31. Moreover, through the gear meshing transmission mechanism, the flipping rod 39 on the movable shaft can be driven to swing back and forth. Through the swinging action, the cleaned steel-plastic pipe is flipped, which facilitates the subsequent full-circumference surface image taking work.

[0043] In other words, the flipping rod 39 allows the steel-plastic pipe to pass smoothly during clockwise rotation, and during counterclockwise rotation, the steel-plastic pipe is flipped over through the action of resistance, thus enabling the steel-plastic pipe to be captured with images of its entire circumference.

[0044] In summary, this embodiment, through the coordination of the material guiding and adjusting mechanism 1, the detection and marking mechanism 24, and related linkage structures, achieves orderly feeding, stable conveying, surface cleaning, full-circumference visual inspection, and automatic defect marking of steel-plastic pipes during the inspection process. It has the advantages of high automation, high inspection efficiency, good inspection accuracy, and reliable marking.

[0045] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0046] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific embodiments described above. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes, characterized in that, include: The material guiding adjustment mechanism (1) includes a material guiding box (2) fixed on the frame and having a conical opening. A first motor (3) is fixedly installed on one side of the outer wall of the material guiding box (2). The output shaft of the first motor (3) is fixedly connected to a rotating wheel (4) inside the material guiding box (2). The outer wall of the rotating wheel (4) is provided with annularly distributed baffles (5). A first quantitative area (6) for several steel-plastic pipes to pass through is provided between the baffles (5). The output shaft of the first motor (3) and the first rotating shaft (7) are connected by a conveyor belt (8). One end of the first rotating shaft (7) is fixed on the first bevel gear (9). The outer wall of the first bevel gear (9) is meshed with a second bevel gear (11) fixed on the second rotating shaft (10). The outer wall of the second rotating shaft (10) is provided with a lever (12) placed between the conical opening and the receiving cavity. The lever (12) is symmetrically arranged relative to the vertical central axis of the guide box (2).

2. The visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to claim 1, characterized in that, The bottom of the baffle (5) abuts against the lifting plate (13). The lifting plate (13) and the inner wall of the guide box (2) are connected by a compression spring (14). The lifting plate (13) is arranged in an inverted U-shape, and a fixing rod (15) is installed at the center of the bottom of the lifting plate (13). The fixing rod (15) and the first shielding plates (16) at both ends are connected by a first swing rod (17). One end of the first shielding plate (16) is fixed on the first gear plate (18). The outer wall of the first gear plate (18) is driven by the first rotating tooth (19) to mesh with the second gear plate (20) which moves in the opposite direction.

3. The visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to claim 2, characterized in that, One end of the second gear plate (20) is fixed on the second baffle plate (21). The first baffle plate (16), the second baffle plate (21) and the inner wall of the guide box (2) together form a second quantitative area (22). The first swing rod (17) is equipped with a fixed rod (15) and the first baffle plate (16) by means of rotational connection at both ends.

4. The visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to claim 1, characterized in that, The frame is provided with a conveyor line (23) along its length, which is used to carry and convey steel-plastic pipes.

5. The visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to claim 1, characterized in that, It also includes a detection marking mechanism (24) placed on the frame. The detection marking mechanism (24) includes a second motor (25) placed on the side plate. The output shaft of the second motor (25) extends sequentially to the rotating plate (26) and the turntable (27). A camera (28) is installed on the outer wall of the rotating plate (26) away from the output shaft of the second motor (25). The protrusion on the turntable (27) and the moving rod (29) are connected by a second swing rod (30).

6. The visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to claim 5, characterized in that, The outer wall of the movable rod (29) is provided with a limiting groove that connects to the side plate, and the movable rods (29) are fixedly connected by a crossbeam. The extended end of the bottom of the crossbeam is fixedly installed with a cleaning brush (31) that contacts the steel-plastic pipe. The cleaning brush (31) is installed with a brush plate by adhesive fixation.

7. The visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to claim 6, characterized in that, One end of the moving rod (29) is connected to a third gear plate (33) that penetrates the interior of the housing (32) via a bending rod. The outer wall of the third gear plate (33) is meshed with a second rotating tooth (34). The central shaft on the second rotating tooth (34) is equipped with an abutment plate (35) that is limited and connected to the steel-plastic pipe. The outer wall of the housing (32) is fixed to the side plate by a detachable installation method, and a guide groove is provided on the housing (32) for the third gear plate (33) to move horizontally.

8. The visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to claim 5, characterized in that, The camera (28) is used to transmit the image signal of the steel-plastic pipe surface to the processor. The processor is used to receive the image signal and output the control signal. The processor is electrically connected to the cylinder (36) to drive the piston rod on the cylinder (36) to move the marker pen (37) up and down.

9. The visual inspection and automatic marking device for full-circumference surface defects of steel-plastic pipes according to claim 8, characterized in that, The cylinder (36) and the U-shaped plate (38) on the frame are connected by locking with positioning pins. The marker pen (37) and the piston rod on the cylinder (36) are connected by a panel. The panel has a positioning groove for connecting with the marker pen (37).

Images