A surface detection device for flange production

Abstract

This invention discloses a surface inspection device for flange production, relating to the field of flange quality inspection technology. It includes a first conveyor, a second conveyor, a third conveyor, a housing, and a tilting assembly. The tilting assembly and the first conveyor are located inside the housing. Multiple flanges are mounted on the first conveyor. The second and third conveyors are connected to the first conveyor and symmetrically arranged along its axis. The axes of the second and third conveyors in their transport direction are perpendicular to the axis of the first conveyor. The second and third conveyors penetrate the housing to form a passageway. The tilting assembly includes a first clamping block, a second clamping block, a base plate, and a rotating component. The first and second clamping blocks are located on the side of the base plate closer to the feeding direction. The second conveyor is located on the side of the base plate away from the first and second clamping blocks. The rotating component is located inside the first clamping block. This invention features strong practicality and no blind spots in inspection.

Description

Technical Field

[0001] This invention relates to the field of flange quality inspection technology, specifically to a surface inspection device for flange production. Background Technology

[0002] With the development of aerospace, deep-sea engineering, and new energy equipment, flange materials have expanded from traditional carbon steel and stainless steel to new materials such as composite materials, high-temperature alloys, engineering ceramics, and metal matrix composites. As a key component in pipeline connections, the surface quality of flanges directly affects sealing performance and safety.

[0003] However, traditional inspection methods using fixed area array cameras have limited depth of field and fixed shooting angles, making it difficult to cover all curved surfaces simultaneously. The curved surfaces on flanges include circumferential surfaces and inner bore surfaces, and the quality of these surfaces must be guaranteed to meet standards. Failure to capture the full view of these curved surfaces can easily lead to these areas becoming blind spots in inspection, thereby affecting the quality of the connection.

[0004] Therefore, it is essential to design a surface inspection device for flange production that is highly practical and has no blind spots in its detection capabilities. Summary of the Invention

[0005] The purpose of this invention is to provide a surface inspection device for flange production, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a surface inspection device for flange production, comprising a conveyor 1, a conveyor 2, a conveyor 3, a housing, and a tilting assembly. The tilting assembly and the conveyor 1 are disposed inside the housing. Multiple flanges are disposed on the conveyor 1. The conveyors 2 and 3 are both connected to the conveyor 1 and are symmetrically arranged along the axis of the conveyor 1. The axes of the transport direction of the conveyors 2 and 3 are perpendicular to the axis of the transport direction of the conveyor 1. The conveyors 2 and 3 both penetrate the housing to form a passage. The tilting assembly includes a clamping block 1, a clamping block 2, a base plate, and a rotating component. The clamping blocks 1 and 2 are disposed on the side of the base plate closer to the feeding direction. The conveyor 2 is located on the side of the base plate away from the clamping blocks 1 and 2. The rotating component is disposed inside the clamping block 1. The structure of the clamping block 1 is the same as that of the clamping block 2. When it is necessary to adjust the flange inspection angle, the rotating component abuts against the circumferential surface of the flange, and the flange can rotate around its own axis.

[0007] According to the above technical solution, multiple sets of positioning blocks are provided above the conveyor. Each positioning block is a stepped circular boss, with the diameter of the upper circular boss being smaller than the diameter of the lower circular boss. A guide assembly is provided on one side of the conveyor. The guide assembly includes a support, which is bolted to one side of the conveyor. A hinge seat is fixedly connected above the support, and a stop rod is hinged inside the hinge seat. The hinge point between the stop rod and the hinge seat is located at one end of the stop rod. A motor is fixedly connected above the hinge seat, and the output shaft of the motor is keyed to one end of the stop rod, thereby controlling the swing of the stop rod. The stop rod is located on the side of the base plate away from clamping blocks one and two. Corresponding to the feed inlet of conveyor two, motor seven is fixedly connected to the hollow side of the stop bar near motor one. The output shaft of motor seven is keyed to lead screw three. The other end of lead screw three is connected to the bearing of the stop bar. A moving block is threaded to the outside of lead screw three. Pushing frames are fixedly connected to both ends of the moving block. The longitudinal axis of the pushing frame is parallel to the axis of lead screw three. The cross-section of the pushing frame is stepped, and the height of the end away from motor one is matched with the height of the circular boss below the positioning block. A pneumatic gripper is fixedly connected to the side of the pushing frame away from motor one. When the guide assembly is in the reset state, the axis of the guide assembly is parallel to the axis of conveyor one.

[0008] According to the above technical solution, two sets of slide table assemblies are fixedly connected inside the housing. The two sets of slide table assemblies are located on both sides of the running axis inside the housing. The slide plates of the two sets of slide table assemblies are fixedly connected to the base plate on the opposite side. The length axis of the base plate is perpendicular to the running axis of the conveyor.

[0009] According to the above technical solution, two sets of slide rails are fixedly connected to the side of the substrate near the clamping block one and clamping block two. The axis of the slide rail in the length direction is parallel to the axis of the substrate in the length direction. Two sets of sliders are slidably connected to each set of slide rails. The two sets of sliders are symmetrically arranged along the axis of the conveyor one running direction. Support two and support three are fixedly connected to each pair of sliders respectively.

[0010] According to the above technical solution, bearing housing 1, bearing housing 2, and bearing housing 3 are provided between the two sets of slide rails. Bearing housing 1, bearing housing 2, and bearing housing 3 are all bolted to the base plate. Bearing housing 1 and bearing housing 3 are located at both ends of the base plate in the length direction. A lead screw 1 is connected to the bearing inside bearing housing 1, and a lead screw 2 is connected to the bearing inside bearing housing 3. The opposite sides of lead screw 1 and lead screw 2 are fixedly connected, and the threads on the outer surfaces of lead screw 1 and lead screw 2 have opposite directions. Slider 1 and lead screw 2 are threadedly connected to slider 1 and slider 2, respectively. Slider 1 is fixedly connected to support 2, and slider 2 is fixedly connected to support 3. Motor 2 is fixedly connected to the side of bearing housing 1 away from bearing housing 3. The output shaft of motor 2 is keyed to lead screw 1. The connection between lead screw 1 and lead screw 2 is connected to bearing housing 2. Bearing housing 2 provides support for lead screw 1 and lead screw 2.

[0011] According to the above technical solution, clamping block 1 and clamping block 2 are respectively set on opposite sides of support 2 and support 3. Clamping block 1 is connected to support 2 by a bearing. Motor 3 is bolted to the side of support 2 away from clamping block 1. The output shaft of motor 3 passes through support 2 and is fixedly connected to clamping block 1. Motor 4 is bolted to the side of support 3 away from clamping block 2. The output shaft of motor 4 passes through support 3 and is fixedly connected to clamping block 2. Clamping block 1 and clamping block 2 are V-shaped as a whole. A cover plate is bolted to the top of clamping block 1. Two sets of motors 5 are bolted to the top of the cover plate.

[0012] According to the above technical solution, two sets of circular holes are provided above the clamping block 1. The two sets of circular holes 1 are symmetrically arranged along the V-shaped normal direction of the clamping block 1. Circular holes 2 on the same plane are provided on both sides of each set of circular holes 1. Circular holes 2 are connected to the circumference of circular holes 1. The diameter of circular holes 1 is larger than the diameter of circular holes 2. Circular holes 3 are coaxially arranged below circular holes 2. The diameter of circular holes 3 is larger than the diameter of circular holes 2. The axes of circular holes 1, 2, and 3 are parallel to the axis of the flange.

[0013] According to the above technical solution, the inner bearing of the first circular hole is connected to the driving gear, the driving gear and the circular hole are coaxially arranged, the upper part of the driving gear is connected to the cover plate bearing, the output shaft of the motor five passes through the cover plate and is keyed to the driving gear, the inner bearing of the second circular hole is connected to the driven gear, the driven gear meshes with the driving gear, the lower part of the driven gear is fixedly connected to the coaxially arranged roller, the roller is arranged inside the third circular hole, the outside of the roller is fixedly connected to the pressure sensor, the internal and upper structures of the clamping block two are the same as the internal and upper structures of the clamping block one, when the clamping block one and clamping block two clamp the flange, the outer surface of the roller abuts against the circumferential surface of the flange.

[0014] According to the above technical solution, a support four is fixedly connected to the side of the substrate away from clamping block one and clamping block two. A rotating shaft is connected to the bearing above the support four, and a motor six is ​​bolted to the bottom of the support four. The output shaft of motor six is ​​keyed to the rotating shaft. A support plate is fixedly connected above the rotating shaft, and a cylinder is fixedly connected to the bottom of the other end of the support plate. A bracket one is fixedly connected to the bottom of the cylinder push rod, and a vibrator is bolted to the other end of the bracket one. A bracket two is bolted to the bottom of the vibrator. The position of bracket two corresponds to the central axis of the flange. Multiple sets of imaging components are fixedly connected to the top inside the outer shell. When the flange is inspected on the surface, the positioning block is coaxial with the imaging components.

[0015] According to the above technical solution, the following operational steps are included: Step 1: Material loading and preliminary testing; Step Two: Clamping and Image Acquisition; Step 3: Deformation detection; Step 4: Take two photos of the end face; Step 5: Divert traffic based on defects.

[0016] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: This invention, by setting up a flipping component and a self-rotating component, realizes multi-angle flipping and 360° circumferential rotation of the flange. Combined with multiple sets of imaging components, it eliminates blind spots in the detection of the end face, circumferential surface, and inner hole surface, achieving full-surface imaging detection without dead angles. Through vibration deformation detection and pressure sensing closed-loop control, it achieves integrated detection of flange structural strength and surface defects, improving the accuracy of defect identification and the stability of equipment operation. Through stepped positioning blocks and intelligent guiding components, it achieves precise flange positioning and automatic diversion and conveying, completing the automated sorting of qualified products, repairable parts, and unqualified products, improving detection and circulation efficiency. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the outer shell of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the guiding component structure of the present invention; Figure 5 This is a schematic diagram of the connection structure between support base two and support base three of the present invention; Figure 6 This is a schematic diagram showing the connection between the clamping block one and the support base two of the present invention; Figure 7 This is a schematic diagram of the internal structure of the clamping block of the present invention; Figure 8 This is a schematic diagram of the vibrator assembly structure of the present invention; Figure 9 This is a schematic diagram of the inner side of the outer casing of the present invention; In the diagram: 1. Conveyor 1; 2. Conveyor 2; 3. Outer shell; 4. Tilting assembly; 5. Clamping block 1; 6. Base plate; 7. Rotating component; 8. Positioning block; 9. Support 1; 10. Hinge seat; 11. Stop bar; 12. Motor 7; 13. Motor 1; 14. Slide assembly; 15. Slide rail; 16. Support 2; 17. Bearing seat 1; 18. Bearing seat 2; 19. Bearing seat 3; 20. Lead screw 1; 21. Lead screw 2; 22. Electric... 23. Motor 3; 24. Cover plate; 25. Motor 5; 26. Circular hole 1; 27. Circular hole 2; 28. Circular hole 3; 29. ​​Drive gear; 30. Driven gear; 31. Roller; 32. Support 4; 33. Rotating shaft; 34. Support plate; 35. Cylinder; 36. Vibrator; 37. Bracket 2; 38. Motor 6; 39. Shooting assembly; 40. Conveyor 3; 41. Guide assembly; 42. Lead screw 3; 43. Push frame. 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 1-9 The present invention provides a technical solution: a surface inspection device for flange production, comprising a conveyor 1, a conveyor 2, a conveyor 3, a housing 3, and a tilting assembly 4. The tilting assembly 4 and the conveyor 1 are disposed inside the housing 3. Multiple flanges (not shown in the figure) are disposed on the conveyor 1. The conveyors 2 and 3 are both connected to the conveyor 1 and are symmetrically arranged along the axis of the conveyor 1. The axes of the conveyor 2 and 3 are perpendicular to the axis of the conveyor 1. The conveyors 2 and 3 both penetrate the housing 3 to form a passage. The tilting assembly 4 includes a clamping block 5, a clamping block 2, a base plate 6, and a rotating component 7. The clamping blocks 5 and 2 are disposed on the side of the base plate 6 near the feeding direction. The conveyor 2 is located on the side of the base plate 6 away from the clamping blocks 5 and 2. The rotating component 7 is disposed inside the clamping block 5. The structure of the clamping block 5 is the same as that of the clamping block 2. When it is necessary to adjust the flange inspection angle, the rotating component 7 abuts against the circumferential surface of the flange, and the flange can rotate around its own axis.

[0020] Multiple positioning blocks 8 are installed above the conveyor 1. Each positioning block 8 is a stepped circular boss, with the diameter of the upper circular boss smaller than that of the lower circular boss. A guide assembly 41 is installed on one side of the conveyor 1. The guide assembly 41 includes a support 9, which is bolted to one side of the conveyor 1. A hinge seat 10 is fixedly connected above the support 9. A stop rod 11 is hinged inside the hinge seat 10. The hinge point between the stop rod 11 and the hinge seat 10 is located at one end of the stop rod 11. A motor 13 is fixedly connected above the hinge seat 10. The output shaft of the motor 13 is keyed to one end of the stop rod 11, thereby controlling the swing of the stop rod 11. The stop rod 11 is located on the side of the base plate 6 away from the clamping block 5 and the clamping block 2. The position of the stop rod 11 corresponds to the feed inlet of the conveyor 2. A motor 7 12 is fixedly connected to the hollow part and the side closest to motor 13. The output shaft of motor 7 12 is keyed to lead screw 3 42. The other end of lead screw 3 42 is connected to the bearing of stop rod 11. A moving block is connected to the external thread of lead screw 3 42. Pushing frame 43 is fixedly connected to both ends of moving block. The longitudinal axis of pushing frame 43 is parallel to the axis of lead screw 3 42. The cross-section of pushing frame 43 is stepped and the height of the end away from motor 13 is adapted to the height of the circular boss below positioning block 8. A pneumatic gripper 44 is fixedly connected to the side of pushing frame 43 away from motor 13. Pneumatic gripper 44 consists of a drive cylinder and gripper. It is prior art and will not be described in detail. When guide component 41 is in the reset state, the axis of guide component 41 is parallel to the axis of conveyor 1.

[0021] Two sets of slide assemblies 14 are fixedly connected inside the outer casing 3. The slide assembly 14 consists of components such as a bed, slide plate, gearbox and ball screw, which are existing technologies and will not be described in detail. The two sets of slide assemblies 14 are located on both sides of the running axis inside the outer casing 3. The slide plates of the two sets of slide assemblies 14 are fixedly connected to the base plate 6 on the opposite side. The length axis of the base plate 6 is perpendicular to the running axis of the conveyor 1.

[0022] Two sets of slide rails 15 are fixedly connected to the side of the substrate 6 near the clamping block 1 5 and clamping block 2. The length axis of the slide rail 15 is parallel to the length axis of the substrate 6. Each set of slide rails 15 is slidably connected to two sets of sliders. The two sets of sliders are symmetrically arranged along the running direction axis of the conveyor 1. Each pair of sliders is fixedly connected to support 2 16 and support 3 respectively.

[0023] Bearing housing 17, bearing housing 28, and bearing housing 39 are provided between the two sets of slide rails 15. Bearing housing 17, bearing housing 28, and bearing housing 39 are all bolted to the base plate 6. Bearing housing 17 and bearing housing 319 are located at opposite ends of the length of the base plate 6. Bearing housing 17 has a bearing connected to lead screw 20 inside, and bearing housing 31 has a bearing connected to lead screw 21 inside. Lead screw 20 and lead screw 21 are fixedly connected on opposite sides. The threads on the outer surfaces are rotated in opposite directions. Screw 1 20 and screw 2 21 are threadedly connected to slider 1 and slider 2, respectively. Screw 1 is fixedly connected to support 2 16, and slider 2 is fixedly connected to support 3. Motor 2 22 is fixedly connected to the side of bearing housing 1 17 away from bearing housing 3 19. The output shaft of motor 2 22 is keyed to screw 1 20. The connection between screw 1 20 and screw 2 21 is connected to bearing housing 2 18. Bearing housing 2 18 provides support for screw 1 20 and screw 2 21.

[0024] Specifically, by driving the second motor 22, the first lead screw 20 and the second lead screw 21 are rotated. Since the threads on the outer surfaces of the first lead screw 20 and the second lead screw 21 are rotated in opposite directions, the second support 16 and the third support move away from or closer to each other synchronously.

[0025] Clamping blocks 1 and 2 are respectively set on opposite sides of support 2 and support 3. Clamping block 1 is connected to support 2 and 16 by bearing. Motor 3 23 is bolted to the side of support 2 and 16 away from clamping block 1. The output shaft of motor 3 23 passes through support 2 and 16 and is fixedly connected to clamping block 1. Motor 4 is bolted to the side of support 3 away from clamping block 2. The output shaft of motor 4 passes through support 3 and is fixedly connected to clamping block 2. Clamping blocks 1 and 2 are V-shaped as a whole. Cover plate 24 is bolted to the top of clamping block 1. Two sets of motor 5 25 are bolted to the top of cover plate 24.

[0026] Two sets of circular holes 26 are provided above the clamping block 5. The two sets of circular holes 26 are symmetrically arranged along the V-shaped normal direction of the clamping block 5. On both sides of each set of circular holes 26, there are circular holes 27 on the same plane. The circular holes 27 are connected to the circumference of the circular holes 26. The diameter of the circular holes 26 is larger than the diameter of the circular holes 27. Below the circular holes 27, there are circular holes 3 28 arranged coaxially. The diameter of the circular holes 3 28 is larger than the diameter of the circular holes 27. The axes of the circular holes 26, 27 and 3 28 are parallel to the axis of the flange.

[0027] The drive gear 29 is connected to the bearing inside the first circular hole 26. The drive gear 29 and the first circular hole 26 are coaxially arranged. The upper part of the drive gear 29 is connected to the bearing of the cover plate 24. The output shaft of the fifth motor 25 passes through the cover plate 24 and is keyed to the drive gear 29. The driven gear 30 is connected to the bearing inside the second circular hole 27. The driven gear 30 meshes with the drive gear 29. The roller 31 is fixedly connected to the lower part of the driven gear 30 and is coaxially arranged. The roller 31 is located inside the third circular hole 28. A pressure sensor (not shown in the figure) is fixedly connected to the outside of the roller 31. The internal and upper structures of the clamping block 2 are the same as the internal and upper structures of the clamping block 5. When the clamping blocks 5 and the clamping block 2 clamp the flange, the outer surface of the roller 31 abuts against the circumferential surface of the flange.

[0028] Specifically, when the flange needs to rotate around its own axis, the motor 25 is started, causing the drive gear 29 to rotate, which in turn drives the driven gear 30 meshing with the drive gear 29 to rotate. The rotation of the driven gear 30 drives the rollers 31 to rotate, so that all the rollers 31 rotate in the same direction, thereby causing the flange that abuts against the rollers 31 to rotate around itself.

[0029] A support 32 is fixedly connected to the side of the base plate 6 away from the clamping block 5 and the clamping block 2. A rotating shaft 33 is connected to the bearing above the support 32. A motor 38 is bolted to the bottom of the support 32. The output shaft of the motor 38 is keyed to the rotating shaft 33. A support plate 34 is fixedly connected to the top of the rotating shaft 33. A cylinder 35 is fixedly connected to the bottom of the other end of the support plate 34. A bracket 1 is fixedly connected to the bottom of the push rod of the cylinder 35. A vibrator 36 is bolted to the other end of the bracket 1. A bracket 2 37 is bolted to the bottom of the vibrator 36. The position of the bracket 2 37 corresponds to the center axis of the flange.

[0030] Specifically, when a vibration test is required on the flange, the drive motor 38 operates, thereby driving the rotating shaft 33 to rotate, which in turn drives the support plate 34, cylinder 35 and vibrator 36 to rotate around the axis of the rotating shaft 33, rotating the vibrator 36 directly above the flange, and then driving the cylinder 35 to extend the push rod so that the bracket 37 abuts against the end face of the flange, and then starting the vibrator 36, transmitting the vibration to the flange through the bracket 37.

[0031] Multiple imaging components 39 are fixedly connected to the upper part of the inner shell 3. The imaging components 39 consist of a light source and a vision sensor lamp component, which are existing technologies and will not be described in detail. When the flange is performing surface inspection, the positioning block 8 is coaxial with the imaging components 39.

[0032] Example 1: The angle between the light source and the flange axis is a core geometric parameter affecting the surface defect detection rate and imaging quality. When the light source illuminates the flange end face perpendicularly, it is suitable for detecting defects such as deformation, large-area porosity, pits, and color differences. When the angle between the light source and the flange axis is 30° to 45°, it is suitable for detecting defects such as roughness, scratches, surface texture, and cracks. When the angle between the light source and the flange axis is 55° to 70°, it is suitable for detecting minor scratches and burrs. By varying the angle between the light source and the flange axis, defects on the flange surface can be fully detected, eliminating blind spots in the detection. The flange consists of several parts: end face one, end face two, circumferential surface, and inner bore surface.

[0033] The surface inspection method for flange production includes the following steps: Step 1: Feeding and preliminary testing.

[0034] Specifically, the flange to be inspected is first placed on the positioning block 8, and then the flange and positioning block 8 are placed on the conveyor 1. The positioning block 8 ensures that the end face of the flange is horizontal. The conveyor 1 moves intermittently to transport the flange directly below the first imaging component 39. The vision sensor of the imaging component 39 takes a picture of the flange end face and performs image processing.

[0035] Furthermore, when the imaging component 39 detects obvious cracks, large-area pits, or pores on the end face, it determines that the workpiece cannot be corrected to become a qualified product and marks it as a defective product. When the imaging component 39 detects minor defects such as small-area pits on the end face or no defects at all, it determines that the workpiece is initially qualified and proceeds to the next step of inspection.

[0036] Step 2: Clamping and Image Acquisition.

[0037] Specifically, when a flange is initially marked as defective, the flipping assembly 4 does not clamp the flange, and conveyor 1 continues to transport it until the defective product aligns with the axis of conveyor 2. At this point, motor 13 of guide assembly 41 is activated, causing the stop bar 11 to rotate around the axis of hinge seat 10, so that the axis of the stop bar 11 intersects with the axis of positioning block 8. This drives motor 7 12, and the rotation of motor 7 12 causes lead screw 3 42 to rotate, causing the moving block threaded to it to move along the axis of lead screw 3 42. This, in turn, moves the push frame 43 along the axis of lead screw 3 42. The pneumatic gripper 44 gradually approaches the positioning block 8, and the pneumatic gripper 44 clamps the lower end of the positioning block 8. Then, motor 13 is driven to move, rotating the pneumatic gripper 44 on the stop bar 11 and the positioning block 8 along the hinge point toward conveyor 2 until the defective product reaches above conveyor 2. The pneumatic gripper 44 then releases its grip, and guide assembly 41 returns to its initial state. All products transported on conveyor 2 are defective.

[0038] After the initial inspection is passed, drive motor 22 moves, causing support 2 16 and support 3 to move closer together, bringing clamping blocks 1 5 and 2 closer together and clamping the outer circle of the flange. When the pressure sensor detects that the pressure is balanced, it indicates that the clamping is stable. Then, motors 3 23 and 4 are started, causing clamping blocks 1 5 and 2 to rotate sequentially around the axes of motors 3 23 and 4 by 30° to 45° and 55° to 70°. The slide assembly 14 moves the entire flipping assembly 4 up and down slightly to achieve focusing and prevent blurry images caused by poor focus. The imaging assembly 39 then captures the surface of the flange at this time. Finally, motor 5 25 of the rotating component 7 is started, and motor 5 25 moves the flange... The drive gear 29 rotates, thereby driving the driven gears 30 on both sides to rotate, which in turn drives the roller 31 to rotate, causing the flange to rotate around its own axis to 90°, 180° and 270° relative to the initial angle in sequence. The imaging component 39 captures three sets of images corresponding to the state and identifies the eight sets of images captured above. At this time, the imaging component 39 can capture the end face, circumferential surface and inner hole surface of the flange. When the angle between the light source and the flange axis is 30° to 45°, if excessive roughness or minor scratches or burrs are detected, the workpiece is judged to be repairable. If cracks or deep scratches are detected at the connection of the hole, the workpiece is judged to be unqualified.

[0039] Step 3: Deformation detection.

[0040] Specifically, vibration testing is performed on the repairable workpiece in step two. At this time, the light source shines vertically on the end face of the flange, the motor 38 is started, and the rotating shaft 33 rotates around itself, thereby rotating the vibrator 36 and the support 37 below it to the top of the flange to be tested. The cylinder 35 is started, and the push rod of the cylinder 35 extends, so that the support 37 abuts against the end face of the flange. The vibrator 36 is started, and the flange is indirectly vibrated for 2 seconds through the support 37. The operation of the vibrator 36 is stopped, the cylinder 35 is reset, and the motor 38 is driven to rotate the rotating shaft 33, so that the vibrator 36 and its connecting parts move to the side of the base plate 6 away from the clamping block 5.

[0041] Furthermore, the second motor 22 is driven to rotate, causing the second support 16 and the third support to move closer together, increasing the clamping force of the first and second clamping blocks on the flange. This clamping force is maintained for 2 seconds, and the pressure sensor monitors to prevent the compressive force from exceeding the maximum limit. The second motor 22 then rotates in the opposite direction, causing the first and second clamping blocks to move away from each other, reducing the compressive force. The pressure value of the pressure sensor decreases, restoring the initial compressive force. If the pressure sensor value gradually decreases after restoring the initial compressive force, it indicates that the flange has deformed, causing unstable clamping. This flange is marked as a defective product. If the pressure... The sensor values ​​remain unchanged. The imaging component 39 captures an image of end face one and repeats step two, driving motors 3 and 4 to rotate clamping blocks 5 and 2 around the axis of motor 3 and 23 by 30° to 45° and 55° to 70° respectively, and captures another image. Then, the driving motor 5 and 25 are used to rotate the flange around its own axis by three 90° rotations and capture three sets of images. Combining the above nine sets of images, the system checks for deformation and cracks. If any are found, the product is marked as defective. If no defects are found, the product is considered preliminarily qualified and proceeds to the next step of inspection.

[0042] Step 4: Take two photos of the end face.

[0043] Specifically, for products that have passed the preliminary inspection, the second end face is inspected. The third motor 23 and the fourth motor move, causing the first clamping block 5 and the second clamping block to rotate 360° around the axis of the third motor 23, so that the second end face faces the imaging component 39. The imaging component 39 captures an image and detects whether there are any irreparable defects in the image. If there are, it is marked as a defective product. If there are no defects, it is judged as a repairable workpiece. If there are no defects in all the above inspections, it is judged as a final qualified product.

[0044] Step 5: Divert traffic based on defects.

[0045] Specifically, based on the above-mentioned categories of non-conforming products, repairable workpieces, and final qualified products, the guiding method in step two is repeated. The guiding component 41 is driven to rotate towards conveyor 2, thereby guiding the non-conforming products onto conveyor 2 for transport. The guiding component 41 is then driven to rotate towards conveyor 3 40, thereby guiding the repairable workpiece onto conveyor 3 40 for transport. The guiding component 41 does not contact the final qualified product and directly discharges from the discharge end of conveyor 1. After each transfer, all moving parts of the guiding component 41 return to their initial state. Conveyor 1 advances one station and sends the next inspected flange into the guiding position, repeating the above process.

[0046] Example 2: This example addresses the situation in Example 1 where, when the angle between the light source and the flange axis is between 30° and 45°, the image taken at this angle exhibits large areas of saturated white spots. The shooting method is adjusted accordingly.

[0047] The causes of white spots can be broadly categorized into two types: low surface roughness and the mirror effect of the material. Specifically, the angle between the light source and the flange axis, as well as the relative angle of the flange's rotation, are recorded. Motors 3 and 4 are driven to move, causing clamping blocks 1 and 2 to rotate around motor 3.23, making the angle between the flange axis and the light source 0°. At this point, the imaging component 39 captures an image. The processor calculates the grayscale value at this point and then drives motors 3 and 4 to operate, making the angle between the light source and the flange axis 10°. The imaging component 39 captures an image and records the grayscale value at this point. The processor calculates the attenuation ratio by comparing the ratio of grayscale value 2 to grayscale value 1. If the attenuation ratio is <0.3, the light intensity attenuation exceeds 70%, indicating extremely strong directionality of the reflected light, which is judged to be due to low surface roughness. If the attenuation ratio is >0.6, the attenuation is slow, indicating a high proportion of diffuse reflection, possibly due to a mixture of both factors.

[0048] Simultaneously, remedial measures are taken based on the distribution area of ​​saturated white spots in the image and the cause of overexposure. When the overexposure location is in the center area of ​​the end face and the cause is low roughness, the tilt angle of drive motors 3 and 4 is slightly increased to change the local incident angle of the end face. At the same time, drive motor 5 is finely adjusted to disrupt the specular reflection condition, and the image is retaken. This process is repeated up to three times, and the image with the lowest saturation is selected as the final detection image. When the cause is a mixture of both, no fine-tuning is performed. Based on the angle between the light source and the flange axis during reflection, an additional detection angle of 20° to 30° is added on top of this angle, and an image is acquired as a complement.

[0049] When the overexposed area is at the edge of the end face, and the cause is low roughness, the drive slide assembly 14 raises or lowers the flange as a whole, changes the focus plane, and shifts the edge reflection. At the same time, drive motor 3 23 makes a fine adjustment of 1°-2°. If the overexposure still exists after adjustment, the area is marked, and reshots are taken at subsequent rotations of 90°, 180°, and 270°. The frames without overexposure are then selected for compositing. When the cause is a mixture of both, the current angles of motors 3 23 and 4 are maintained, and motor 5 25 is driven to make the flange rotate slowly and continuously acquire images. The image with the lowest percentage of overexposed pixels at the edge is then selected.

[0050] When the overexposed location is on the outer circular surface, and the cause is low roughness, the rotation angle of motors 3 (23) and 4 (4) is maintained, and motor 5 (25) is driven to make the flange rotate continuously. At the same time, the imaging component 39 acquires multiple frames of images. The frame with the lowest overexposure ratio among the multiple frames is selected as the detection image. If multiple consecutive images are overexposed, the rotation stops, and motors 3 (23) and 4 (4) are driven to rotate 2°-3°, and the rotation acquisition is performed again. When the cause is a mixture of both, motors 3 (23) and 4 (4) continue to rotate 5°-10°, while the brightness of the light source in the imaging component 39 is reduced, and the acquisition is repeated. Furthermore, when the flange rotates continuously, it is found that the overexposed location is constantly drifting and lengthening, and the range is expanding. The remedial measures fail. The values ​​of multiple pressure sensors are checked. If the values ​​of the pressure sensors in the four sets of rollers 31 are not equal and the difference is large, it indicates that the flange is eccentric, causing oscillation during rotation and changing the originally stable specular reflection angle condition. This flange is marked as eccentric and sent into conveyor 2 by guide component 41.

[0051] When the overexposed location is the inner hole wall, drive motors 23 and 4 rotate to more than 45°, and at the same time reduce the brightness of the light source in the imaging component 39. If it is still overexposed or the cause is a mixture of both, mark the inner hole reflection and transfer it from the guide component 41 to the conveyor 40.

[0052] Furthermore, if overexposure cannot be completely eliminated after adjusting the angle, but the defect-free area is dominant, it is judged as a final qualified product. If overexposure cannot be eliminated, but there are suspected defects in the overexposure area, it is judged as a repairable workpiece. The guide component 41 guides this workpiece to the conveyor 3 40. If overexposure cannot be eliminated and there are obvious defect characteristics in the overexposure area, or there is still a large area of ​​overexposure after compensation, it is directly judged as a non-qualified product and guided by the guide component 41 to the conveyor 2 2.

[0053] 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 process, method, article, or apparatus.

[0054] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surface inspection device for flange production, comprising a first conveyor (1), a second conveyor (2), a third conveyor (40), a housing (3), and a tilting assembly (4), characterized in that, The flipping assembly (4) and conveyor one (1) are disposed inside the outer casing (3). Conveyor one (1) is provided with multiple flanges. Conveyor two (2) and conveyor three (40) are both connected to conveyor one (1) and are symmetrically arranged along the axis of conveyor one (1). The axes of the transport direction of conveyor two (2) and conveyor three (40) are perpendicular to the axis of the transport direction of conveyor one (1). Conveyor two (2) and conveyor three (40) both penetrate the outer casing (3) to form a passage. The flipping assembly (4) includes The system comprises clamping block 1 (5), clamping block 2, a base plate (6), and a rotating component (7). Clamping block 1 (5) and clamping block 2 are located on the side of the base plate (6) closer to the feeding direction. Conveyor 2 (2) is located on the side of the base plate (6) away from clamping block 1 (5) and clamping block 2. The rotating component (7) is located inside clamping block 1 (5). The structure of clamping block 1 (5) is the same as that of clamping block 2. When it is necessary to adjust the flange detection angle, the rotating component (7) abuts against the circumferential surface of the flange, and the flange can rotate around its own axis. Multiple positioning blocks (8) are provided above the conveyor (1). A guide assembly (41) is provided on one side of the conveyor (1). The guide assembly (41) includes a support (9). The support (9) is bolted to one side of the conveyor (1). A hinge seat (10) is fixedly connected above the support (9). A stop bar (11) is hinged inside the hinge seat (10). When the flange that has been initially inspected is marked as a defective product, the flipping assembly (4) does not clamp the flange, and the conveyor (1) continues to transport.

2. The surface inspection equipment for flange production according to claim 1, characterized in that, The positioning block (8) is a stepped circular boss with the diameter of the upper circular boss being smaller than that of the lower circular boss. The hinge of the stop rod (11) and the hinge seat (10) is located at one end of the stop rod (11). A motor (13) is fixedly connected above the hinge seat (10). The output shaft of the motor (13) is keyed to one end of the stop rod (11). The stop rod (11) is located on the side of the base plate (6) away from the clamping block (5) and the clamping block (2). The position of the stop rod (11) corresponds to the feed inlet of the conveyor (2). The stop rod (11) is hollow inside and a motor (12) is fixedly connected to the side of the stop rod (11) near the motor (13). The output shaft of the motor (12) is keyed to a lead screw. The third (42) screw is connected to the bearing of the stop rod (11) at the other end. The external thread of the third (42) screw is connected to a moving block. The two ends of the moving block are fixedly connected to a pusher (43). The longitudinal axis of the pusher (43) is parallel to the axis of the third (42). The cross-section of the pusher (43) is stepped and the height of the end away from the motor (13) is matched with the height of the circular boss below the positioning block (8). The side of the pusher (43) away from the motor (13) is fixedly connected to a pneumatic gripper (44). When the guide assembly (41) is in the reset state, the axis of the guide assembly (41) is parallel to the axis of the conveyor (1).

3. A surface inspection device for flange production according to claim 2, characterized in that, Two sets of slide assemblies (14) are fixedly connected inside the outer shell (3). The two sets of slide assemblies (14) are located on both sides of the running axis inside the outer shell (3). The slide plates of the two sets of slide assemblies (14) are fixedly connected to the base plate (6) on opposite sides. The length axis of the base plate (6) is perpendicular to the running axis of the conveyor (1).

4. A surface inspection device for flange production according to claim 3, characterized in that, Two sets of slide rails (15) are fixedly connected to the side of the substrate (6) near the clamping block one (5) and clamping block two. The length axis of the slide rail (15) is parallel to the length axis of the substrate (6). Each set of slide rails (15) is slidably connected to two sets of sliders. The two sets of sliders are symmetrically arranged along the running direction axis of the conveyor one (1). Each pair of sliders is fixedly connected to support two (16) and support three respectively.

5. A surface inspection device for flange production according to claim 4, characterized in that, Bearing housing 1 (17), bearing housing 2 (18), and bearing housing 3 (19) are provided between the two sets of slide rails (15). Bearing housing 1 (17), bearing housing 2 (18), and bearing housing 3 (19) are all bolted to the base plate (6). Bearing housing 1 (17) and bearing housing 3 (19) are located at both ends of the base plate (6) along its length. Bearing housing 1 (17) has a bearing connected to lead screw 1 (20), and bearing housing 3 (19) has a bearing connected to lead screw 2 (21). The side opposite to lead screw 1 (20) and lead screw 2 (21) The screws on the outer surfaces of screw 1 (20) and screw 2 (21) are fixedly connected and have opposite threads. Screw 1 (20) and screw 2 (21) are respectively threaded to slider 1 and slider 2. Screw 1 is fixedly connected to support 2 (16), and slider 2 is fixedly connected to support 3. Motor 2 (22) is fixedly connected to the side of bearing seat 1 (17) away from bearing seat 3 (19). The output shaft of motor 2 (22) is keyed to screw 1 (20). The connection between screw 1 (20) and screw 2 (21) is connected to bearing seat 2 (18).

6. A surface inspection device for flange production according to claim 5, characterized in that, The clamping blocks 1 (5) and 2 are respectively set on the opposite side of the support 2 (16) and the support 3. The clamping block 1 (5) is connected to the support 2 (16) by a bearing. The side of the support 2 (16) away from the clamping block 1 (5) is bolted to the motor 3 (23). The output shaft of the motor 3 (23) passes through the support 2 (16) and is fixedly connected to the clamping block 1 (5). The side of the support 3 away from the clamping block 2 is bolted to the motor 4. The output shaft of the motor 4 passes through the support 3 and is fixedly connected to the clamping block 2. The clamping blocks 1 (5) and 2 are V-shaped as a whole. The cover plate (24) is bolted to the top of the clamping block 1 (5). Two sets of motors 5 (25) are bolted to the top of the cover plate (24).

7. A surface inspection device for flange production according to claim 6, characterized in that, Two sets of circular holes 1 (26) are provided above the clamping block 1 (5). The two sets of circular holes 1 (26) are symmetrically arranged along the V-shaped normal direction of the clamping block 1 (5). Two circular holes 2 (27) with the same plane are provided on both sides of each set of circular holes 1 (26). The circular holes 2 (27) are connected to the circumference of the circular holes 1 (26). The diameter of the circular holes 1 (26) is larger than the diameter of the circular holes 2 (27). A circular hole 3 (28) is provided coaxially below the circular holes 2 (27). The diameter of the circular holes 3 (28) is larger than the diameter of the circular holes 2 (27). The axes of the circular holes 1 (26), 2 (27) and 3 (28) are parallel to the axis of the flange.

8. A surface inspection device for flange production according to claim 7, characterized in that, The drive gear (29) is connected to the bearing inside the first circular hole (26). The drive gear (29) and the first circular hole (26) are coaxially arranged. The drive gear (29) is connected to the bearing of the cover plate (24) above. The output shaft of the fifth motor (25) passes through the cover plate (24) and is keyed to the drive gear (29). The driven gear (30) is connected to the bearing inside the second circular hole (27). The driven gear (30) meshes with the drive gear (29). A roller (31) is fixedly connected to the lower part of the driven gear (30) and is coaxially arranged. The roller (31) is arranged inside the third circular hole (28). A pressure sensor is fixedly connected to the outside of the roller (31). The internal and upper structures of the second clamping block are the same as the internal and upper structures of the first clamping block (5). When the first clamping block (5) and the second clamping block clamp the flange, the outer surface of the roller (31) abuts against the circumferential surface of the flange.

9. A surface inspection device for flange production according to claim 8, characterized in that, A support four (32) is fixedly connected to the side of the base plate (6) away from the clamping block one (5) and clamping block two. A rotating shaft (33) is connected to the bearing above the support four (32). A motor six (38) is bolted to the bottom of the support four (32). The output shaft of the motor six (38) is keyed to the rotating shaft (33). A support plate (34) is fixedly connected to the top of the rotating shaft (33). A cylinder (35) is fixedly connected to the bottom of the other end of the support plate (34). A bracket one is fixedly connected to the bottom of the push rod of the cylinder (35). A vibrator (36) is bolted to the other end of the bracket one. A bracket two (37) is bolted to the bottom of the vibrator (36). The position of the bracket two (37) corresponds to the center axis of the flange. Multiple sets of shooting components (39) are fixedly connected to the top of the inside of the outer shell (3). When the flange is inspected on the surface, the positioning block (8) is coaxial with the shooting components (39).

10. A surface inspection device for flange production according to claim 9, characterized in that, Inspection methods for surface inspection equipment used in flange production: Step 1: Material loading and preliminary testing; Step 2: Clamping and Image Acquisition; Step 3: Deformation detection; Step 4: Take two photos of the end face; Step 5: Divert traffic based on defects.

Images