High-temperature aluminum alloy profile surface defect detection device and method

Abstract

The invention discloses a high-temperature aluminum alloy profile surface defect detection device and method, and relates to the technical field of aluminum alloy profile detection. The high-temperature aluminum alloy profile surface defect detection device comprises a shell, the bottom of the shell is connected with a heat insulation part, the heat insulation part is used for blocking heat radiated by a high-temperature part and guaranteeing optical image collection of a camera, the circumference angle opposite to the arc line of an arc-shaped guide rail is not larger than 60 degrees, the high-temperature part is located between the two ends of the arc-shaped guide rail, and the bottom of a sliding rod is connected with the camera. The sliding rod is connected with the translation piece which is used for driving the sliding rod to move in the arc-shaped direction of the arc-shaped guide rail through the extrusion effect. According to the high-temperature aluminum alloy profile surface defect detection device and method, the camera is isolated from the high-temperature part through the heat insulation part, the camera moves from one end of the high-temperature part to the other end of the high-temperature part, shooting of multiple side faces of the high-temperature part is continuously and completely completed, shooting blind areas are reduced, and the temperature of the working environment of the lens and the camera is reduced in cooperation with the wind action.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy profile detection, and in particular to a device and method for detecting surface defects of high-temperature aluminum alloy profiles. Background Art

[0002] Surface defect detection of high-temperature aluminum alloy profiles is of multi-dimensional and critical significance in industrial production. Its value is not only reflected in product quality control, but also runs through multiple links such as efficiency improvement, safety assurance and technological innovation in the industrial chain.

[0003] According to Chinese Patent Classification No. CN116539630B, a surface defect detection device for aluminum alloy profiles includes a mounting block, a purge mechanism, a dust-wiping mechanism, and scraping teeth. The mounting block is connected to the purge mechanism for removing dust from the aluminum alloy sheet. The bottom end of the mounting block is fixedly connected to the dust-wiping mechanism for removing scale from the aluminum alloy sheet. The scraping teeth are fixedly connected to the bottom end of the mounting block. The present invention uses the purge mechanism, dust-wiping mechanism, and scraping teeth to treat the surface of the aluminum alloy profile, remove dust and adhesives from the surface of the aluminum alloy profile, reduce the impact of dust and adhesives on the surface defect detection of the aluminum alloy profile, improve the accuracy of surface defect detection of the aluminum alloy profile, and reduce detection errors.

[0004] The temperature of high-temperature aluminum alloy profiles is 500-650℃. In order to ensure the normal use of the detection device, it is often necessary to thermally isolate or cool the high-temperature area of ​​the detection device. In addition to the bottom surface, some high-temperature aluminum alloy profiles have multiple side surfaces in the circumference, and the shapes of the side surfaces are different. Shadow areas and difficult-to-shoot areas are prone to exist between adjacent surfaces. It is necessary to place cameras on all side directions of the high-temperature aluminum alloy profiles. The cameras are scattered from each other, and the volume of the entire device is increased, which increases the difficulty of heat dissipation and maintenance. In addition, some geometric defects and morphological defects span multiple sides and are considered one defect, but they cannot be directly identified by single-side shooting, which can easily lead to misjudgment. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a device and method for detecting surface defects of high-temperature aluminum alloy profiles. The camera is isolated from the high-temperature part by a heat insulating part. The camera moves from one end of the high-temperature part to the other end, continuously and completely completing the shooting of multiple sides of the high-temperature part, reducing the shooting blind area, and cooperating with the effect of wind to reduce the temperature of the lens and the camera working environment.

[0006] Technical solution: To achieve the above objectives, the present invention is implemented through the following technical solutions: A high-temperature aluminum alloy profile surface defect detection device, comprising: a shell, the bottom of the shell is connected to a heat insulation member, the heat insulation member is used to block the heat radiated by the high-temperature component and ensure the optical image acquisition of the camera, the inner wall of the shell is connected to a stepper motor, the rotating end of the stepper motor is connected to a translation member, an arc guide rail is provided below the stepper motor, the arc line of the arc guide rail corresponds to a circular angle of no more than 60°, the high-temperature component is located between the two ends of the arc guide rail, the arc guide rail is slidably connected to a sliding rod, the bottom of the sliding rod is connected to a camera, the sliding rod is connected to the translation member, the translation member is used to drive the sliding rod to move along the arc direction of the arc guide rail through extrusion, the top of the shell is connected to a fan, the fan is connected to the arc guide rail through a first pipe, and the fan is connected to an arc-shaped equalizing box through a second pipe.

[0007] Preferably, the thermal insulation component includes: a lower plate, the end face of the lower plate is connected to the inner wall of the shell, the top of the lower plate is connected to the upper plate through the middle plate, the top of the upper plate is penetrated by a camera window, the bottom of the camera window penetrates the middle plate and the lower plate in sequence, the upper plate, the middle plate and the lower plate are parallel to each other, the upper plate is an arc-shaped plate, the circumferential angle of the arc of the upper plate is not greater than 60°, the inner wall of the upper plate is connected to a sleeve, and the inner wall of the upper part of the sleeve is connected to a lens.

[0008] Preferably, the lower plate is a silicon carbide coating, the thickness of the lower plate is 0.9-1.2 mm, the middle plate is composed of an aerogel felt plate and aluminum foil, the thickness of the aerogel felt is 4.5-5.5 mm, the thickness of the aluminum foil is 0.09-0.1 mm, the upper plate is an alumina ceramic plate, the surface of the upper plate is sprayed with graphene heat dissipation paint, and the thickness of the upper plate is 3.1-3.2 mm.

[0009] Preferably, the translation member includes: a nut, the transmission end of the stepping motor is threadedly connected to the nut through a screw rod, the side of the nut is connected to a wire drum, the side of the wire drum is connected to two side rods, the two side rods are symmetrically distributed on both sides of the wire drum axis, each of the side rods is connected to a side rod through a rotating rod, the rotating rod is rotatably connected to a rotating head, the bottom of each of the two ends of the rotating head is connected to a push plate, a placement channel is provided between the two push plates, and the push plate is an elastic plate.

[0010] Preferably, both ends of the sliding rod are connected to a pressure rod, the pressure rod is located in the placement channel, the width of the pressure rod is smaller than the width of the placement channel, the diameter of the rotating rod is smaller than the diameter of the side rod, the diameter of the side rod is equal to the diameter of the side rod, the inner diameter of the rotating head is equal to the diameter of the rotating rod, and the outer diameter of the rotating head is not less than the diameter of the side rod.

[0011] Preferably, the bottom of the sliding rod is connected to a camera through a heat conducting plate, the outer side of the camera is wrapped with a heat conducting shell, the heat conducting plate is connected to the heat conducting shell, the air outlet of the fan is connected to an air box, the bottom of the air box is connected to the first pipe and the second pipe, a plurality of holes are opened through the top of the shell, an air outlet is opened through one side of the shell, the bottom end of the first pipe and the bottom end of the second pipe pass through a hole respectively and extend into the shell, the bottom of the arc-shaped air equalizing box is connected to the top of the upper plate, a first air inlet is opened through one side of the arc-shaped air equalizing box, the first air inlet is connected to the bottom of the second pipe, an air outlet strip is opened through the side of the arc-shaped air equalizing box close to the lens, and the top of the lens at the bottom of the air outlet strip is located on the same arc surface.

[0012] Preferably, both ends of the arc guide rail are connected to the inner wall of the shell through a connecting block, and the arc guide rail includes: an upper arc bar, below the upper arc bar screw rod, both ends of the upper arc bar are connected to the lower arc bar through a connecting plate, an air duct is opened inside the lower arc bar, a top bar is opened on the upper surface of the lower arc bar, the bottom of the top bar is connected to the top of the air duct, a second air inlet is opened on one side of the connecting plate and the bottom of the second air inlet is connected to the air duct, and the top of the air inlet is connected to the bottom of the first pipe.

[0013] Preferably, when the high-temperature component moves to directly below the shell, the longitudinal axis of the high-temperature component and the longitudinal axis of the heat insulating component are located in the same straight line, and the longitudinal axis of the lens and the longitudinal axis of the camera are located in the same straight line.

[0014] A method is applied to the surface defect detection device of the high-temperature aluminum alloy profile, characterized in that: the composite insulation layer design of the heat insulation part reduces the heat radiated into the shell, the heat insulation part is arranged in an arc shape, the high-temperature part is located between the two ends of the lens, the lens field of view is increased to complete continuous photography of all circumferential sides of the high-temperature part except the two ends and the bottom end, the rotating end of the stepper motor sequentially drives the translation part, the rotating head, the push plate, and the slide bar to move in the horizontal direction, the slide bar is slidably connected to the slide groove, the moving direction of the slide bar is limited, so that the slide bar moves along the direction of the slide groove, the trajectory of the arc guide rail matches the side shape of the high-temperature part, the moving camera is always kept within a predetermined distance range from the surface of the high-temperature part, ensuring that the camera lens is perpendicular to the arrangement point of the high-temperature part, completing continuous photography of the side of the high-temperature part, and the lens surface, the upper arc bar, the small arc bar, and the camera are cooled by the air cooling effect of the arc-shaped air distribution box and the arc guide rail to ensure that the camera temperature is within the predetermined working temperature range.

[0015] Beneficial Effects: This invention provides a device and method for detecting surface defects in high-temperature aluminum alloy profiles. Compared to existing technologies, this method offers the following advantages: 1. A thermal insulator isolates the camera from the high-temperature component. Driven by a wire drum, the camera slides along the curved guide rail, moving from one end of the high-temperature component to the other, continuously and completely capturing multiple sides of the component. This reduces blind spots and, combined with wind, reduces the temperature of the lens and camera operating environment.

[0016] 2. The pressure rod carries the slide bar to slide in the arc direction of the arc guide rail, so that the camera moves from one end of the lower part of the workpiece to the other end of the workpiece to complete the continuous shooting of the side of the workpiece. There is no need to set up cameras on each side of the workpiece and at the junction of adjacent surfaces, which reduces the number of cameras and ensures the continuity of shooting. The camera is always perpendicular to the shooting point of the workpiece. The camera is equipped with light sources at many angles to reduce the possibility of shooting blind spots. It can accurately identify geometric defects and morphological defects across multiple sides and detect defects in time. The detection device can immediately reject waste products after extrusion or heat treatment to reduce losses. It can also mark defect problems and promptly reversely find problems with processing tools, improve production methods, and reduce product scrap rates.

[0017] 3. The push plate pushes the pressure rod, and the pressure on the pressure rod increases, and the pressure rod will also squeeze the push plate. The push plate is an elastic plate and can perform a certain elastic contraction. At the starting stage of the slide bar, ensure that the push plate and the pressure rod have a certain buffer space, and the rotating head is connected to the rotating rod. The rotating head can also rotate the push plate at a small angle to facilitate the push plate to adapt to the movement of the slide bar, ensuring that the slide bar can start smoothly along the slide groove under the action of thrust.

[0018] 4. The central angle of the arc guide is less than 90°, which not only prevents the arc of the arc guide track from being too large and ensures the normal sliding of the slide bar, but also extends the length of the arc guide. A sliding groove is opened in the middle of the arc guide, which can expand the surface area of ​​the arc guide, improve the heat dissipation capacity and efficiency of the arc guide, maintain the continuous heat conduction capacity of the arc guide, and ensure that the temperature of the camera is maintained within the standard operating temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and enable those skilled in the relevant art to make and use the present application.

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 for Figure 1 Schematic diagram of the structure after removing the conveyor belt.

[0023] Figure 3 It is a structural schematic diagram of the shell and the internal devices of the shell.

[0024] Figure 4 This is a diagram showing the separation of the shell and the internal device of the shell.

[0025] Figure 5 Schematic diagram of the structure of the thermal insulation component.

[0026] Figure 6 This is an exploded view of the thermal insulation component.

[0027] Figure 7 This is a diagram showing the separation of the upper arc section and the fan section.

[0028] Figure 8 This is a structural diagram of the part where the upper arc bar is located.

[0029] Figure 9 This is a schematic diagram of the structure of the silk reel, rotor, pressure rod and camera.

[0030] Figure 10 for Figure 9 Exploded diagram.

[0031] Figure 11 It is a structural diagram of the arc-shaped air equalizing box.

[0032] Figure 12 Schematic diagram of the structure of the curved guide rail.

[0033] Figure 13 It is a structural schematic diagram of one end of the arc guide rail.

[0034] The reference numerals in the figure are: 11, conveyor belt; 12, high temperature component; 21, housing; 22, air outlet; 23, channel; 24, connecting block; 3, thermal insulation; 31, lower plate; 32, middle plate; 33, upper plate; 34, camera window; 35, sleeve; 36, lens; 41, stepping motor; 42, lead screw; 43, wire drum; 44, nut; 45, side rod; 46, rotating rod; 47, side rod; 48, rotating rod Head; 49, push plate; 51, fan; 52, air box; 53, first duct; 54, second duct; 55, arc-shaped air equalizing box; 56, air outlet strip; 57, first air inlet; 61, slide bar; 62, pressure bar; 63, heat conduction plate; 64, camera; 7, arc-shaped guide rail; 71, slide groove; 72, upper arc strip; 73, lower arc strip; 74, connecting plate; 75, air duct; 76, top strip; 77, second air inlet.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] Example 1: Figure 1 - Figure 13 As shown, an embodiment of the present invention provides a surface defect detection device for high-temperature aluminum alloy profiles, including: a shell 21, the inner wall of the shell 21 is connected to a stepper motor 41, the rotating end of the stepper motor 41 is connected to a translation part, an arc guide rail 7 is arranged below the stepper motor 41, the arc line of the arc guide rail 7 corresponds to a circular angle of no more than 60°, the high-temperature part 12 is located between the two ends of the arc guide rail 7, the arc guide rail 7 is slidably connected to a slide rod 61, the bottom of the slide rod 61 is connected to a camera 64, the slide rod 61 is connected to the translation part, and the translation part is used to drive the slide rod 61 to move along the arc direction of the arc guide rail 7 through extrusion.

[0039] The circumferential angle of the arc of the arc guide rail 7 is not greater than 60°, the circumferential angle of the arc of the arc guide rail 7 is less than a quarter of the circumferential angle, the curvature of the arc guide rail 7 is small, and the arc guide rail 7 is relatively flat, which prevents the slide rod 61 from being stuck in the arc guide rail 7 and unable to move normally.

[0040] The translation part includes: a nut 44, the transmission end of the stepping motor 41 is threadedly connected to the nut 44 through a screw rod 42, the side of the nut 44 is connected to a wire drum 43, and the side of the wire drum 43 is connected to two side rods 45, and the two side rods 45 are symmetrically distributed on both sides of the axis of the wire drum 43, each side rod 45 is connected to a side rod 47 through a rotating rod 46, and the rotating rod 46 is rotatably connected to a rotating head 48, and the bottom of each end of each rotating head 48 is connected to a push plate 49, and a placement channel is provided between the two push plates 49, and the push plate 49 is an elastic plate.

[0041] Both ends of the sliding rod 61 are connected to a pressure rod 62, which is located in the placement channel. The width of the pressure rod 62 is smaller than the width of the placement channel. The diameter of the rotating rod 46 is smaller than the diameter of the side rod 47. The diameter of the side rod 47 is equal to the diameter of the side rod 45. The inner diameter of the rotating head 48 is equal to the diameter of the rotating rod 46, and the outer diameter of the rotating head 48 is not less than the diameter of the side rod 47.

[0042] Both ends of the arc guide rail 7 are connected to the inner wall of the shell through the connecting block 24. The arc guide rail 7 includes: an upper arc bar 72, below the upper arc bar 72 screw rod 42, both ends of the upper arc bar 72 are connected to the lower arc bar 73 through a connecting plate 74, an air duct 75 is opened inside the lower arc bar 73, and a top bar 76 is opened on the upper surface of the lower arc bar 73. The bottom of the top bar 76 is connected to the top of the air duct 75, and a second air inlet hole 77 is opened on one side of the connecting plate 74. The bottom of the second air inlet hole 77 is connected to the air duct 75, and the top of the air inlet hole is connected to the bottom of the first pipe 53.

[0043] When the high-temperature component 12 moves to the bottom of the shell 21 , the longitudinal axis of the high-temperature component 12 and the longitudinal axis of the heat insulating component 3 are in the same straight line, and the longitudinal axis of the lens 36 and the longitudinal axis of the camera 64 are in the same straight line.

[0044] When in use, a 3D model diagram of the high-temperature component 12 and the camera 64 is constructed, the moving trajectory of the camera 64 is determined and the position of the shooting point is simulated to ensure that the camera 64 completely shoots the high-temperature component 12, the shooting trajectory is determined and the arc guide rail 7 is made according to the trajectory, and the shooting timing of the camera 64 is controlled by the controller.

[0045] The high-temperature component 12 moves with the conveyor belt 11, and a retractable blocking plate is provided below the center of the housing 21 to block the movement of the high-temperature component 12. At this time, the longitudinal axis of the high-temperature component 12 is in the same straight line or close to the longitudinal axis of the camera 64, and the camera 64 has a good shooting field of view. The stepper motor 41 is started, and the rotating end of the stepper motor 41 drives the screw rod 42 to rotate. The screw rod 42 drives the nut 44, the wire drum 43, the side rod 45, the rotating rod 46, the side rod 47, the rotating head 48, and the push plate 49 to move in the horizontal direction in sequence. A push plate 49 approaches and The push plate 49 contacts the pressure rod 62, and the push plate 49 pushes the pressure rod 62. The pressure on the pressure rod 62 increases, and the pressure rod 62 also squeezes the push plate 49. The push plate 49 is an elastic plate and can perform a certain elastic contraction. In the starting stage of the slide bar 61, it is ensured that the push plate 49 and the pressure rod 62 have a certain buffer space, and the rotating head 48 is rotatably connected to the rotating rod 46. The rotating head 48 can also lead the push plate 49 to rotate at a small angle, so that the push plate 49 adapts to the movement of the slide bar 61, ensuring that the slide bar 61 can start smoothly along the slide groove 71 under the action of the thrust. During this period of movement, the interaction force between the push plate 49 and the pressure rod 62 increases, the pressure rod 62 squeezes the push plate 49, and the push plate 49 produces elastic contraction. When the wind force of the slide bar 61 along the tangent direction of the arc surface is greater than the sliding friction force it receives, the pressure rod 62 slides the slide bar 61 toward the arc direction of the arc guide rail 7, so that the camera 64 moves from one end of the lower part of the workpiece to the other end of the workpiece, completing the continuous shooting of the side of the workpiece. There is no need to set a camera 64 on each side of the workpiece and at the junction of the adjacent surfaces, which reduces the number of cameras 64 and ensures the continuity of shooting. The shooting point is always perpendicular to the workpiece. Camera 64 is equipped with light sources at various angles to reduce the possibility of blind spots. It can accurately identify geometric and morphological defects across multiple sides, and promptly detect surface cracks, bubbles, oxide scale and other defects that are prone to occur in high-temperature aluminum alloy profiles during extrusion and heat treatment processes, interrupting subsequent processing (such as drilling and welding) to reduce losses. The detection device can immediately reject waste products after extrusion or heat treatment, and can mark defect problems, so as to promptly reversely find problems with processing tools, improve production methods, and reduce product scrap rates.

[0046] Example 2: Figure 1 - Figure 13As shown, an embodiment of the present invention provides a surface defect detection device for high-temperature aluminum alloy profiles, and the thermal insulation part 3 includes: a lower plate 31, the end face of the lower plate 31 is connected to the inner wall of the shell 21, the top of the lower plate 31 is connected to the upper plate 33 through the middle plate 32, and a camera window 34 is opened through the top of the upper plate 33, and the bottom of the camera window 34 passes through the middle plate 32 and the lower plate 31 in sequence. The upper plate 33, the middle plate 32, and the lower plate 31 are all parallel to each other, the upper plate 33 is an arc plate, and the circumferential angle of the arc of the upper plate 33 is not greater than 60°. The inner wall of the upper plate 33 is connected to the sleeve 35, and the inner wall of the upper part of the sleeve 35 is connected to the lens 36.

[0047] The sleeve 35 is connected to the side wall of the camera window 34, and the sleeve 35 is connected to the lens 36. The high-temperature component 12 is isolated from the camera 64 by the upper plate 33, the middle plate 32, the lower plate 31, the sleeve 35, and the lens 36. During wind heat dissipation, the wind is prevented from seeping down and blowing towards the high-temperature component 12, which may easily cause the temperature of the high-temperature component 12 to change and cause defects or quality reduction of the high-temperature component 12.

[0048] The upper plate 33, the middle plate 32 and the lower plate 31 form a composite heat insulation layer (three-layer structure partition).

[0049] The upper plate 33 is arranged on the side of the high-temperature component 12: the upper plate 33 is a 1 mm thick silicon carbide coating (emissivity ε≤0.4, reflecting high-temperature radiation); The middle plate 32 is set in the middle layer: 5 mm aerogel felt + 0.1 mm aluminum foil (reflecting radiation); The lower plate 31 is set on the camera side: it is a 3 mm alumina ceramic plate λ, but the thermal resistance is increased by thickness, and the surface is sprayed with graphene heat dissipation paint (to accelerate heat dissipation to the air).

[0050] It is also possible to add secondary shielding of thermal radiation on the basis of the composite insulation layer, and add an adjustable light shielding 10 mm in front of the camera lens: the cover body is made of quartz glass + copper mesh woven layer (copper mesh reflects infrared radiation, quartz is light-transmitting); the cover is filled with ceramic fiber cotton with low thermal capacity to absorb residual radiant heat.

[0051] The bottom of the shell 21 is connected to a heat insulation part 3, which is used to block the heat radiated by the high-temperature part 12 and ensure the optical image acquisition of the camera 64. The top of the shell 21 is connected to a fan 51, and the fan 51 is connected to the arc guide rail 7 through a first pipe 53. The fan 51 is connected to an arc-shaped equalizing box through a second pipe 54.

[0052] The lower plate 31 is a silicon carbide coating with a thickness of 0.9-1.2 mm. The middle plate 32 is composed of an aerogel felt plate and aluminum foil with a thickness of 4.5-5.5 mm and a thickness of 0.09-0.1 mm. The upper plate 33 is an alumina ceramic plate with a surface sprayed with graphene heat dissipation coating. The thickness of the upper plate 33 is 3.1-3.2 mm.

[0053] The bottom of the sliding rod 61 is connected to the camera 64 through a heat conducting plate 63. The outer side of the camera 64 is wrapped with a heat conducting shell. The heat conducting plate 63 is connected to the heat conducting shell. The air outlet 22 of the fan 51 is connected to the air box 52. The bottom of the air box 52 is connected to the first pipe 53 and the second pipe 54. A plurality of channels 23 are opened through the top of the shell 21. An air outlet 22 is opened through one side of the shell 21. The bottom ends of the first pipe 53 and the second pipe 54 pass through a channel 23 respectively and extend into the shell 21. The bottom of the arc-shaped air equalizing box 55 is connected to the top of the upper plate 33. A first air inlet hole 57 is opened through one side of the arc-shaped air equalizing box 55. The first air inlet hole 57 is connected to the bottom of the second pipe 54. An air outlet strip 56 is opened through the side of the arc-shaped air equalizing box 55 close to the lens 36. The top of the lens 36 at the bottom of the air outlet strip 56 is located on the same arc surface.

[0054] A method is applied to a surface defect detection device for a high-temperature aluminum alloy profile, characterized in that: the composite insulation layer design of the heat insulation member 3 reduces the heat radiated into the housing 21, the heat insulation member 3 is arranged in an arc shape, the high-temperature member 12 is located between the two ends of the lens 36, and the field of view of the lens 36 is increased to complete continuous photography of all circumferential sides of the high-temperature member 12 except the two ends and the bottom end, the rotating end of the stepping motor 41 sequentially moves the translation member, the rotating head 48, the push plate 49, and the slide rod 61 in the horizontal direction, the slide rod 61 is in sliding contact with the slide groove 71, and the movement direction of the slide rod 61 is Subject to limitation, the slide bar 61 moves along the direction of the slide groove 71, and the trajectory of the arc guide rail 7 matches the side shape of the high-temperature component 12. The moving camera 64 always maintains a predetermined distance range from the surface of the high-temperature component 12, ensuring that the lens of the camera 64 is perpendicular to the placement point of the high-temperature component 12, completing continuous shooting of the side of the high-temperature component 12. Through the air cooling effect of the arc-shaped air equalization box 55 and the arc guide rail 7, the surface of the lens 36, the upper arc bar 72, the small arc bar, and the camera 64 are cooled to ensure that the temperature of the camera 64 is within the predetermined operating temperature range.

[0055] When in use, the high-temperature component 12 is close to the heat-insulating component 3. The heat of the high-temperature component 12 is conducted toward the camera 64 side through thermal radiation, causing the temperature of the camera 64 side to rise. The standard operating environment temperature of the camera 64 is -10°C to 50°C. The temperature on the camera 64 is transferred to the pressure rod 62 and the curved guide rail 7 in sequence through heat conduction, causing the pressure rod 62, the curved guide rail 7, and the surface temperature of the lens 36 to rise. The fan 51 is started, and the air enters the air box 52. The first pipe 53 and the second pipe 54 in the air box 52 respectively enter the air duct 75 of the curved guide rail 7 and the curved air distribution box 55. The air from the curved air distribution box 55 is blown horizontally toward the lens 36 through the air outlet strip 56, forming an air flow parallel to the lens 36 (wind speed 5-8 m / s), only takes away a small amount of heat on the upper surface of the partition (generated by weak conduction or residual radiation), avoiding wind penetration downward and contacting the high-temperature component 12, and the wind in the air duct 75 is blown out through the top bar 76, assisting the heat dissipation of the curved guide rail 7 and the pressure rod 62 sliding along the slide groove 71. The arc center angle of the curved guide rail 7 is less than 90°, which can not only avoid the curvature of the curved guide rail 7 track being too large, ensuring the normal sliding of the slide rod 61, but also extend the length of the curved guide rail 7. The slide groove 71 is opened through the middle of the curved guide rail 7, which can expand the surface area of ​​the curved guide rail 7, improve the heat dissipation capacity and heat dissipation efficiency of the curved guide rail 7, maintain the continuous heat conduction capacity of the curved guide rail 7, ensure that the temperature of the camera 64 is maintained within the standard operating temperature range, extend the continuous use time of the camera 64, reduce the number of times the camera 64 is damaged due to temperature increase, and extend the maintenance cycle.

[0056] In conjunction with Example 1, on the basis of ensuring complete inspection of the high-temperature component 12, the number of cameras 64 is reduced. A smaller number of cameras 64 corresponds to a smaller number of heat sinks, which have a simpler structure and reduce the cost of inspection and maintenance.

[0057] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. While specific details are described in detail in the preferred embodiments of the present invention to provide a thorough understanding of the present invention, those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A high-temperature aluminum alloy profile surface defect detection device, characterized in that: include: A housing (21) is provided, wherein the bottom of the housing (21) is connected to a heat insulating member (3), wherein the heat insulating member (3) is used to block the heat radiated by the high-temperature member (12) and ensure optical image acquisition by the camera (64), wherein the inner wall of the housing (21) is connected to a stepping motor (41), wherein the rotating end of the stepping motor (41) is connected to a translation member, wherein an arc guide rail (7) is provided below the stepping motor (41), wherein the arc line of the arc guide rail (7) has an angle of not more than 60°, wherein the high-temperature member (12) is located on the arc guide rail (7). ), the arc guide rail (7) is slidably connected to a slide bar (61), the bottom of the slide bar (61) is connected to a camera (64), the slide bar (61) is connected to a translation member, and the translation member is used to drive the slide bar (61) to move along the arc direction of the arc guide rail (7) through an extrusion action, and the top of the shell (21) is connected to a fan (51), the fan (51) is connected to the arc guide rail (7) through a first pipe (53), and the fan (51) is connected to an arc-shaped equalizing box through a second pipe (54).

2. The high-temperature aluminum alloy profile surface defect detection device according to claim 1, characterized in that: The heat insulating member (3) comprises: a lower plate (31), an end face of the lower plate (31) being connected to the inner wall of the shell (21), the top of the lower plate (31) being connected to the upper plate (33) through the middle plate (32), the top of the upper plate (33) being penetrated by a camera window (34), the bottom of the camera window (34) being penetrated by the middle plate (32) and the lower plate (31) in sequence, the upper plate (33), the middle plate (32) and the lower plate (31) being parallel to each other, the upper plate (33) being an arc-shaped plate, the arc of the upper plate (33) subtending a circumferential angle of not more than 60°, the inner wall of the upper plate (33) being connected to a sleeve (35), and the inner wall of the upper part of the sleeve (35) being connected to a lens (36).

3. The high-temperature aluminum alloy profile surface defect detection device according to claim 2, characterized in that: The lower plate (31) is a silicon carbide coating, and the thickness of the lower plate (31) is 0.9-1.2 mm. The middle plate (32) is composed of an aerogel felt plate and aluminum foil, and the thickness of the aerogel felt is 4.5-5.5 mm, and the thickness of the aluminum foil is 0.09-0.1 mm. The upper plate (33) is an alumina ceramic plate, and the surface of the upper plate (33) is sprayed with graphene heat dissipation paint, and the thickness of the upper plate (33) is 3.1-3.2 mm.

4. The high-temperature aluminum alloy profile surface defect detection device according to claim 1, characterized in that: The translation member includes: a nut (44); the driving end of the stepping motor (41) is threadedly connected to the nut (44) through a screw rod (42); the side of the nut (44) is connected to a wire drum (43); the side of the wire drum (43) is connected to two side rods (45); the two side rods (45) are symmetrically distributed on both sides of the axis of the wire drum (43); each of the side rods (45) is connected to a side rod (47) through a rotating rod (46); the rotating rod (46) is rotatably connected to a rotating head (48); the bottom of each end of the rotating head (48) is connected to a push plate (49); a placement channel is provided between the two push plates (49); the push plate (49) is an elastic plate.

5. The high-temperature aluminum alloy profile surface defect detection device according to claim 4, characterized in that: Both ends of the slide rod (61) are connected to a pressure rod (62), and the pressure rod (62) is located in the placement channel. The width of the pressure rod (62) is smaller than the width of the placement channel. The diameter of the rotating rod (46) is smaller than the diameter of the side rod (47). The diameter of the side rod (47) is equal to the diameter of the side rod (45). The inner diameter of the rotating head (48) is equal to the diameter of the rotating rod (46), and the outer diameter of the rotating head (48) is not less than the diameter of the side rod (47).

6. The high-temperature aluminum alloy profile surface defect detection device according to claim 2, characterized in that: The bottom of the slide bar (61) is connected to a camera (64) via a heat conducting plate (63), the outer side of the camera (64) is wrapped with a heat conducting shell, the heat conducting plate (63) is connected to the heat conducting shell, the air outlet (22) of the fan (51) is connected to the wind box (52), the bottom of the wind box (52) is connected to the first pipe (53) and the second pipe (54), the top of the shell (21) is provided with a plurality of holes (23), one side of the shell (21) is provided with an air outlet (22), the first pipe (5 3) and the bottom end of the second pipe (54) pass through a hole (23) respectively and extend into the shell (21); the bottom of the upper plate (33) is connected to an arc-shaped air distribution box (55); a first air inlet (57) is provided through one side of the arc-shaped air distribution box (55); the first air inlet (57) is communicated with the bottom of the second pipe (54); an air outlet strip (56) is provided through one side of the arc-shaped air distribution box (55) close to the lens (36); the bottom of the air outlet strip (56) has the top of the lens (36) located on the same arc surface.

7. The high-temperature aluminum alloy profile surface defect detection device according to claim 1, characterized in that: Both ends of the arc-shaped guide rail (7) are connected to the inner wall of the shell through a connecting block (24), and the arc-shaped guide rail (7) includes: an upper arc bar (72), below the upper arc bar (72) screw rod (42), both ends of the upper arc bar (72) are connected to the lower arc bar (73) through a connecting plate (74), an air duct (75) is opened inside the lower arc bar (73), a top bar (76) is opened on the upper surface of the lower arc bar (73), the bottom of the top bar (76) is connected to the top of the air duct (75), a second air inlet (77) is opened on one side of the connecting plate (74), and the bottom of the second air inlet (77) is connected to the air duct (75), and the top of the air inlet is connected to the bottom of the first pipe (53).

8. The high-temperature aluminum alloy profile surface defect detection device according to claim 2, characterized in that: When the high-temperature component (12) moves to the bottom of the housing (21), the longitudinal axis of the high-temperature component (12) and the longitudinal axis of the heat insulating component (3) are located in the same straight line, and the longitudinal axis of the lens (36) and the longitudinal axis of the camera (64) are located in the same straight line.

9. A method, applied to the high-temperature aluminum alloy profile surface defect detection device according to any one of claims 1 to 8, characterized in that: The composite insulation layer design of the heat insulating member (3) reduces the heat radiated into the housing (21). The heat insulating member (3) is arranged in an arc shape. The high temperature member (12) is located between the two ends of the lens (36). The field of view of the lens (36) is increased to complete the continuous photography of all circumferential sides of the high temperature member (12) except the two ends and the bottom end. The rotating end of the stepping motor (41) sequentially moves the translation member, the rotating head (48), the push plate (49), and the slide rod (61) in the horizontal direction. The slide rod (61) is slidably connected with the slide groove (71). The moving direction of the slide rod (61) is limited so that the slide rod (61) moves along the slide groove. The moving camera (64) is always kept within a predetermined distance range from the surface of the high-temperature component (12), ensuring that the lens of the camera (64) is perpendicular to the placement point of the high-temperature component (12), and completing continuous shooting of the side of the high-temperature component (12). The surface of the lens (36), the upper arc strip (72), the small arc strip, and the camera (64) are cooled by the air cooling effect of the arc-shaped air distribution box (55) and the arc-shaped guide rail (7), ensuring that the temperature of the camera (64) is within a predetermined operating temperature range.

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