Surface defect detection device and method for engine cover plate machining

Abstract

The invention discloses a surface defect detection device and method for engine cover plate processing, and relates to the technical field of engine cover plate detection. By arranging the movable overturning assembly and a second arc-shaped driving rack, the second arc-shaped driving rack is used for driving a first bevel gear to rotate, the effect that a U-shaped limiting frame is driven to complete 180-degree overturning is achieved, and then the purpose that after defect detection is conducted on one face of the engine cover plate, defect detection can be conducted on the other face of the engine cover plate can be achieved; the detection efficiency and the detection effect of the surface defects of the engine cover plate are improved, and the condition that the other surface of the engine cover plate can be detected only when the engine cover plate is turned over manually in the detection process is avoided, so that the time and the labor cost are saved; the overturning process of the U-shaped limiting frame is achieved through joint cooperation of the second arc-shaped driving rack and the overturning transmission assembly, a power device does not need to be independently arranged for overturning of the U-shaped limiting frame, and the cost for arranging the power device is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of engine cover detection, and specifically to a surface defect detection device and method for engine cover processing. Background Art

[0002] The engine cover is a plate-shaped component located under the hood of an automobile. It is usually made of metal materials and is used to cover and protect the engine and other related mechanical components. Its main functions are to protect the engine from external objects, help reduce engine noise, and play a role in modifying the appearance of the vehicle body. The design and manufacture of the engine cover need to meet strict safety standards to ensure its effective operation during vehicle operation;

[0003] After the engine cover is processed and formed, it is necessary to detect the surface defects thereof, and remove the engine covers with scratches, black spots, and deformations on the surface, so as to improve the qualified rate of the engine cover at the time of leaving the factory.

[0004] Referring to the steel strip surface defect detection device disclosed in the patent application with the publication number of CN213689414U, the detection lamp illuminates the surface of the steel strip, so that the camera of the detection piece can obtain a clearer surface of the steel strip in real time, and at the same time transmits the image to the computer for defect analysis, so as to judge whether the surface quality of the steel strip is qualified, so as to timely detect the steel strip defects and respond in time, with high accuracy, effectively avoiding the occurrence of batch quality accidents to ensure the quality of the steel strip.

[0005] After comprehensively analyzing the above patents, the following defects are obtained:

[0006] At present, after one side of the surface defect detection device finishes detecting, it is necessary to flip the product so that the other surface to be detected faces the detection device. During this process, the operation of the surface defect detection device needs to be paused, and the device can be restarted for detection only after the detection product is flipped. This not only wastes a large amount of detection time, but also cannot meet the batch detection of products;

[0007] After the product is formed, its surface is prone to adhering dust and other impurities. When passing through the surface defect detection device, the attached dust and impurities are extremely likely to be misidentified as black spots or other defects generated during forming, resulting in misdetection of the product, so that qualified products are removed, reducing the detection accuracy of the surface defect detection device.

[0008] Therefore, the present invention proposes a surface defect detection device and method for engine cover processing to solve the above problems. Summary of the Invention

[0009] Aiming at the deficiencies of the prior art, the present invention provides a surface defect detection device and method for processing engine covers, which solves the problem that the current surface defect detection equipment needs to flip the product after detecting one side, so that the other side to be detected faces the detection equipment. During this process, the operation of the surface defect detection equipment needs to be paused, and the equipment can be started again for detection only after the product to be detected is flipped. This not only wastes a large amount of detection time, but also cannot meet the batch detection of products; dust and other impurities are easily attached to the product surface. When passing through the surface defect detection equipment, the attached dust and impurities are extremely easy to be misidentified as black spots or other defects generated during molding, resulting in misdetection of the product, rejection of qualified products, and reduction of the detection accuracy of the surface defect detection equipment.

[0010] To achieve the above objectives, the present invention is realized through the following technical solutions: A surface defect detection device for processing engine covers, comprising:

[0011] A detection table, which provides an operation platform for the surface defect detection of the engine cover, and a servo motor is fixedly arranged inside it. The output shaft of the servo motor rotates through the detection table and is fixedly provided with a turntable;

[0012] A loading mechanism, a plurality of the loading mechanisms are evenly arranged on the side wall of the turntable, used for clamping the engine cover to be detected, and cleaning the engine cover before surface defect detection. One side of the top of the detection table is fixedly provided with an arc driving rack one, which is used to drive the loading mechanism to flip during the detection process, and cooperate to complete the double-sided detection of the engine cover;

[0013] A flipping driving component, which includes an arc driving rack two and an arc driving rack three fixedly arranged on the top of the detection table, used to drive the loading mechanism to complete a 180-degree flip respectively;

[0014] A detection mechanism, which includes a detection device one and a detection device two fixedly arranged on both sides of the top of the detection table respectively. The detection device one and the detection device two are respectively used to collect images of the front and back sides of the engine cover, providing data support for subsequent defect detection;

[0015] A cleaning driving component, which includes a loading table fixedly arranged on the top of the detection table through a mounting bracket and a driving block fixedly arranged at the bottom of the loading table.

[0016] Further, the loading mechanism includes a moving and flipping component for clamping the engine cover and a cleaning component arranged on the side wall of the moving and flipping component for cleaning the floating dust and impurities on the surface of the engine cover;

[0017] The mobile flipping assembly includes a first bearing frame fixedly arranged on the side wall of the turntable and a U-shaped limiting frame rotatably arranged on the inner wall of the first bearing frame through a rotating shaft. One of the rotating shafts rotatably penetrates through the first bearing frame and extends to the outside. A rotary damper for restricting its rotation is rotatably sleeved on the outer wall of the rotating shaft, and the rotary damper is fixedly connected to the outer wall of the first bearing frame through a flange.

[0018] The other rotating shaft rotatably penetrates through the first bearing frame and is connected with a flipping transmission assembly. The flipping transmission assembly includes a worm gear fixedly sleeved on the outer wall of the rotating shaft and a worm rotatably arranged on the side wall of the first bearing frame through a bracket and meshed with the worm gear. One end of the worm is fixedly provided with a first helical gear meshed with the arc-shaped driving rack two.

[0019] A lifting assembly for lifting the engine cover plate is arranged on the inner wall of the U-shaped limiting frame. The inside of the first bearing frame is a hollow structure, and through grooves communicating with its inside are opened on both sides of its outer wall. A clamping component for restricting the position of the engine cover plate is arranged inside the cavity of the first bearing frame.

[0020] Further, the lifting assembly includes a lifting plate slidably arranged on the inner wall of the U-shaped limiting frame. First racks are fixedly arranged on both sides of the front surface of the lifting plate. Lifting columns are fixedly arranged on both sides of the bottom of the lifting plate. The bottom ends of the lifting columns slidably penetrate through the U-shaped limiting frame and extend to the outside. A first spring is slidably sleeved on the outer wall of the lifting column between the lifting plate and the opposite side wall of the U-shaped limiting frame.

[0021] Further, the clamping component includes a U-shaped driving plate slidably arranged inside the cavity of the U-shaped limiting frame. A second rack is fixedly arranged on the side wall of the U-shaped driving plate inside the through groove. A U-shaped groove is opened on the side wall of the U-shaped driving plate. A plurality of wedge-shaped blocks are fixedly arranged on the inner wall of the U-shaped groove in sequence from top to bottom. A gear meshing with both the second rack and the first rack is rotatably arranged inside the through groove. A plurality of clamping units corresponding to the positions of the wedge-shaped blocks one by one are arranged on the side wall of the U-shaped limiting frame in sequence from top to bottom.

[0022] Further, the clamping unit includes a clamping arm slidably penetrating through the U-shaped limiting frame and a rubber clamping block fixedly arranged at one end of the clamping arm. A spring limiting plate is slidably sleeved on the outer wall of the clamping arm. The spring limiting plate is fixedly arranged on the side wall of the U-shaped limiting frame through a bolt. A second spring is slidably sleeved on the outer wall of the clamping arm between the U-shaped limiting frame and the spring limiting plate. One end of the clamping arm is slidably arranged on the outer wall of the wedge-shaped block.

[0023] Further, the cleaning assembly includes a second carrier frame fixedly arranged on the outer wall of the first carrier frame and lifting sliding grooves opened on both sides of the outer wall of the second carrier frame. One side of the second carrier frame is provided with a cross plate, and air distribution plates are fixedly arranged on the front and rear sides of the bottom of the cross plate. The interior of the air distribution plate is of a hollow cavity structure. A plurality of air outlet holes communicating with the hollow cavity are uniformly opened on the opposite side walls of the two air distribution plates. On both sides of the back of one of the air distribution plates, sliding blocks slidingly arranged inside the lifting sliding grooves are fixedly arranged. The bottom of the sliding block is fixedly provided with a guide rod. The bottom end of the guide rod slidably penetrates through the lifting sliding groove and extends to the outside. A third spring is slidably sleeved on the outer wall of the guide rod and inside the lifting sliding groove. A gas supply assembly for supplying air into the air distribution plate is arranged on the outer wall of the air distribution plate.

[0024] Further, the gas supply assembly includes a wind cylinder fixedly arranged on the outer wall of the air distribution plate by bolts, a cover plate fixedly arranged on the outer wall of the wind cylinder, and an exhaust port opened on the side wall of the wind cylinder. The exhaust port is communicated with the interior of the cavity of the air distribution plate through a pipeline. A plurality of air inlet holes are uniformly opened on the outer wall of the cover plate. A dust-proof net for filtering dust is fixedly arranged inside each air inlet hole. A transmission is fixedly arranged on the outer wall of the cover plate. A second helical gear meshingly connected with the first arc driving rack is fixedly arranged on the input shaft of the transmission. And a fan blade is fixedly arranged inside the wind cylinder and on the output shaft of the transmission. The transmission is used for accelerating the rotation speed of the fan blade.

[0025] Further, a controller for controlling the operation of the servo motor and a surface defect detection module are also fixedly arranged on the outer wall of the detection table. The surface defect detection module is used for receiving the surface image data of the engine cover plate input by the first detection device and the second detection device, analyzing the defects of the image, and marking the defective images.

[0026] The present invention also discloses a surface defect detection method for the processing of an engine cover plate, which is used for the surface defect detection device for the processing of the engine cover plate. The method includes the following steps:

[0027] Step 1: First, load the engine cover plates into a plurality of loading mechanisms in sequence, and ensure that the loading mechanisms stably clamp the engine cover plates. After being stably clamped, the engine cover plates are in a vertical state.

[0028] Step 2: Start the servo motor to drive the turntable to rotate slowly and uniformly. When one of the loading mechanisms loading the engine cover plate passes directly below the driving block, the driving block drives the loading mechanism to complete the cleaning operation of the engine cover plate. Subsequently, the first detection device immediately takes a picture of one surface of the engine cover plate and performs defect detection on this surface.

[0029] Step 3. Next, the bearing mechanism meets the arc drive rack II, and after being driven by the arc drive rack II, it rotates 180 degrees, with the other side of the engine cover facing the inspection device II. The inspection device II takes continuous photos of the passing engine cover to detect defects on the other side of the engine cover.

[0030] Step 4. When the bearing mechanism loaded with the engine cover that has undergone double-sided defect detection passes through the arc drive rack III, it rotates 180 degrees again and returns to its original state.

[0031] The present invention provides a surface defect detection device and method for engine cover processing. Compared with the prior art, it has the following beneficial effects:

[0032] 1. A surface defect detection device and method for engine cover processing. By setting multiple bearing mechanisms, it can stably clamp multiple engine covers simultaneously during a single engine cover surface defect detection process, achieving the effect of synchronously detecting multiple automotive engine covers. Secondly, while the lifting plate moves downward, it can drive the gear to rotate by means of the rack I, thereby indirectly pushing the U-shaped drive plate upward, achieving the effect of simultaneously using multiple wedge blocks to push the clamping arms to move towards each other, so as to complete the rapid clamping operation of the automotive engine cover and improve the surface defect detection efficiency of the engine cover. Moreover, by controlling the downward movement height of the lifting plate, the upward movement height of the U-shaped drive plate can be controlled, and then the distance at which the wedge blocks push the clamping arms closer to each other can be controlled, achieving the purpose of clamping engine covers with different width dimensions, and improving the practicability of the surface defect detection device for engine cover processing.

[0033] 2. A surface defect detection device and method for engine cover processing. By setting the moving and flipping assembly and the arc drive rack II, during the revolution of the bearing frame I around the inspection table, the arc drive rack II can be used to drive the helical gear I to rotate, achieving the effect of driving the U-shaped limit frame to complete a 180-degree flip, and further achieving the purpose of being able to detect defects on the other side of the engine cover after detecting defects on one side of the engine cover, improving the detection efficiency and detection effect of the engine cover surface defects, avoiding the situation where manual flipping of the engine cover is required during the detection process to detect the other side, thereby saving time and labor costs. Secondly, the flipping process of the U-shaped limit frame is realized through the common cooperation of the arc drive rack II and the flipping transmission assembly, without the need to separately set a power device for the flipping of the U-shaped limit frame, saving the cost of setting the power device, thus making the structure simpler and facilitating subsequent maintenance and repair work.

[0034] 3. A surface defect detection device and method for engine cover processing. By setting a cleaning component, an arc-shaped driving rack 1, and a driving block, during the rotation of the cleaning component, the driving block can push down the air distribution plate, so that the two air distribution plates cover the engine cover, preparing for cleaning the automotive engine cover. At the same time, the helical gear 2 in the gas supply component meshes with the arc-shaped driving rack 1, and the fan blades are driven to rotate rapidly. And through the acceleration of the transmission, high-speed flowing air can be provided to the air distribution plate, achieving the purpose of purging dust and impurities on the surface of the automotive engine cover. Among them, the rotation of the fan blades is realized by the drive of the arc-shaped driving rack 1, without the need to set a separate power device for the rotation of the fan blades, saving the cost of setting the power device, thus making the structure simpler and facilitating subsequent maintenance and repair work. Moreover, the cleaning component can remove dust and other impurities on the product surface before surface defect detection, avoiding misdetection of qualified products by the surface defect detection equipment, thereby improving the detection accuracy of the surface defect detection equipment.

[0035] 4. A surface defect detection device and method for engine cover processing. By setting the arc-shaped driving rack 3, after the two surfaces of the engine cover are detected, the arc-shaped driving rack 3 can drive the moving and flipping component to flip 180 degrees again, so that it returns to the original position, facilitating the placement of the engine cover on the bearing mechanism again and quickly performing the next surface defect detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is the first overall three-dimensional structure schematic diagram of the present invention;

[0037] Figure 2 is the Figure 1 amplified structure schematic diagram of part A in the present invention;

[0038] Figure 3 is the Figure 1 amplified structure schematic diagram of part B in the present invention;

[0039] Figure 4 is the second overall three-dimensional structure schematic diagram of the present invention;

[0040] Figure 5 is the Figure 4 amplified structure schematic diagram of part C in the present invention;

[0041] Figure 6 is the structure schematic diagram of the present invention in the state of removing the detection table;

[0042] Figure 7 is the first three-dimensional structure schematic diagram of the bearing mechanism of the present invention;

[0043] Figure 8Schematic diagram of the second three-dimensional structure of the bearing mechanism of the present invention;

[0044] Figure 9 Schematic diagram of the disassembled state structure of the mobile flipping component of the present invention;

[0045] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure of part D therein;

[0046] Figure 11 For the present invention Figure 9 Schematic diagram of the enlarged structure of part E therein;

[0047] Figure 12 Schematic diagram of the sectional structure of the U-shaped limit frame of the present invention;

[0048] Figure 13 For the present invention Figure 12 Schematic diagram of the enlarged structure of part F therein;

[0049] Figure 14 Schematic diagram of the first disassembled state structure of the cleaning component of the present invention;

[0050] Figure 15 Schematic diagram of the second disassembled state structure of the cleaning component of the present invention;

[0051] Figure 16 Schematic diagram of the sectional structure of the gas supply component of the present invention.

[0052] In the figure: 1, inspection table; 2, turntable; 3, bearing mechanism; 31, mobile flipping component; 311, first bearing frame; 312, U-shaped limit frame; 313, rotary damper; 314, worm gear; 315, worm; 316, first helical gear; 317, lifting plate; 318, first rack; 319, lifting column; 3110, first spring; 3111, through groove; 3112, U-shaped driving plate; 3113, second rack; 3114, wedge block; 3115, gear; 3116, clamping unit; 31161, clamping arm; 31162, second spring; 32, cleaning component; 321, second bearing frame; 322, lifting chute; 323, cross plate; 324, air distribution plate; 325, slider; 326, guide rod; 327, third spring; 328, gas supply component; 3281, air duct; 3282, cover plate; 3283, transmission; 3284, second helical gear; 3285, fan blade; 4, first arc driving rack; 5, second arc driving rack; 6, first inspection device; 7, second inspection device; 8, bearing table; 9, driving block; 10, third arc driving rack. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0054] As Figures 1 to 16 , the present invention provides three technical solutions: a surface defect detection device for engine cover processing, specifically including the following embodiments:

[0055] Embodiment 1: A surface defect detection device for engine cover processing, including:

[0056] A detection table 1, which is used to provide an operation platform for the surface defect detection of the engine cover, and a servo motor is fixedly arranged inside it. The output shaft of the servo motor rotates through the detection table 1 and is fixedly provided with a turntable 2;

[0057] A loading mechanism 3, a plurality of loading mechanisms 3 are evenly arranged on the side wall of the turntable 2, which is used to clamp the engine cover to be detected and clean the engine cover before surface defect detection. An arc driving rack 1 is fixedly arranged on one side of the top of the detection table 1, which is used to drive the loading mechanism 3 to flip during the detection process and cooperate to complete the double-sided detection of the engine cover;

[0058] A flipping driving component, which includes an arc driving rack 2 5 and an arc driving rack 3 10 fixedly arranged on the top of the detection table 1, which are used to drive the loading mechanism 3 to complete a 180-degree flip respectively;

[0059] A detection mechanism, which includes a detection device 1 6 and a detection device 2 7 fixedly arranged on both sides of the top of the detection table 1 respectively. The detection device 1 6 and the detection device 2 7 are respectively used to collect images of the front and back of the engine cover and provide data support for subsequent defect detection;

[0060] The detection mechanism consists of the following parts: a light source system: used to illuminate the surface of the object to be detected so that the detection device can clearly observe the surface defects; an imaging system: including a lens, a camera and an image processor, which is used to capture and process and analyze the image of the surface of the detection object to identify the surface defects; a control system: including a data acquisition module, a signal processing module, a data storage module, etc., which is used to control the whole detection process, record the detection results and output reports.

[0061] A cleaning driving component, which includes a loading table 8 fixedly arranged on the top of the detection table 1 through a mounting bracket and a driving block 9 fixedly arranged at the bottom of the loading table 8. The driving block 9 cooperates with the loading mechanism 3 and the arc driving rack 1 to complete the cleaning of the surface of the engine cover.

[0062] Embodiment 2: The main difference between this embodiment and the first technical solution is as follows: A surface defect detection device for machining an engine cover plate, the bearing mechanism 3 includes a moving and flipping assembly 31 for clamping the engine cover plate and a cleaning assembly 32 arranged on the side wall of the moving and flipping assembly 31 for cleaning the floating dust and impurities on the surface of the engine cover plate;

[0063] The moving and flipping component 31 includes a first carrier 311 fixedly arranged on the side wall of the turntable 2 and a U-shaped limiting frame 312 rotatably arranged on the inner wall of the first carrier 311 through a rotating shaft. One of the rotating shafts rotatably penetrates the first carrier 311 and extends to the outside. A rotary damper 313 for restricting its rotation is rotatably sleeved on the outer wall of the rotating shaft. The rotary damper 313 is fixedly connected to the outer wall of the first carrier 311 through a flange; the rotary damper 313 mainly includes a housing and friction plates arranged inside the housing. The friction plates are used to provide a certain damping force to control the rotational movement of the shaft. The housing provides an installation space for the friction plates. Since the rotary damper 313 is a prior art and has been widely used, therefore, its internal structure and working principle will not be described in detail here. The other rotating shaft rotatably penetrates the first carrier 311 and is connected with a flipping transmission component. The flipping transmission component includes a worm gear 314 fixedly sleeved on the outer wall of the rotating shaft and a worm 315 rotatably arranged on the side wall of the first carrier 311 through a bracket and meshed with the worm gear 314. One end of the worm 315 is fixedly provided with a first helical gear 316 meshed with the arc-shaped driving rack two 5; a lifting component for lifting the engine cover plate is arranged on the inner wall of the U-shaped limiting frame 312. The inside of the first carrier 311 is a hollow structure, and through grooves 3111 communicating with its inside are opened on both sides of its outer wall. A clamping component for restricting the position of the engine cover plate is arranged inside the cavity of the first carrier 311. The lifting component includes a lifting plate 317 slidably arranged on the inner wall of the U-shaped limiting frame 312. On both sides of the front surface of the lifting plate 317, first racks 318 are fixedly arranged. On both sides of the bottom of the lifting plate 317, lifting columns 319 are fixedly arranged. The bottom ends of the lifting columns 319 slidably penetrate the U-shaped limiting frame 312 and extend to the outside. A first spring 3110 is slidably sleeved on the outer wall of the lifting columns 319 between the lifting plate 317 and the opposite side walls of the U-shaped limiting frame 312. A limiting plate is fixedly arranged at the bottom end of the lifting column 319, and this limiting plate is used to prevent the lifting column 319 and the U-shaped limiting frame 312 from separating when the U-shaped limiting frame 312 is flipped upside down. The clamping component includes a U-shaped driving plate 3112 slidably arranged inside the cavity of the U-shaped limiting frame 312. A second rack 3113 is fixedly arranged on the side wall of the U-shaped driving plate 3112 and inside the through groove 3111. A U-shaped groove is opened on the side wall of the U-shaped driving plate 3112. A plurality of wedge-shaped blocks 3114 are fixedly arranged on the inner wall of the U-shaped groove from top to bottom. A gear 3115 meshed with both the second rack 3113 and the first rack 318 is rotatably arranged inside the through groove 3111. A plurality of clamping units 3116 corresponding to the positions of the wedge-shaped blocks 3114 one by one are arranged on the side wall of the U-shaped limiting frame 312 from top to bottom.The clamping unit 3116 includes a clamping arm 31161 that slides through the U-shaped limiting frame 312 and a rubber clamping block fixedly arranged at one end of the clamping arm 31161. A spring limiting plate is slidably sleeved on the outer wall of the clamping arm 31161. The spring limiting plate is fixedly arranged on the side wall of the U-shaped limiting frame 312 by bolts. A second spring 31162 is slidably sleeved on the outer wall of the clamping arm 31161 and located between the U-shaped limiting frame 312 and the spring limiting plate. One end of the clamping arm 31161 is slidably arranged on the outer wall of the wedge block 3114.

[0064] Embodiment 3: The main difference between this embodiment and the second technical solution is as follows: For a surface defect detection device for engine cover processing, the cleaning component 32 includes a second carrier 321 fixedly arranged on the outer wall of the first carrier 311 and lifting sliding grooves 322 opened on both sides of the outer wall of the second carrier 321. A cross plate 323 is arranged on one side of the second carrier 321. Air distribution plates 324 are fixedly arranged on the front and rear sides of the bottom of the cross plate 323. The inside of the air distribution plate 324 is a hollow cavity structure. A plurality of air outlet holes communicating with the hollow cavity are uniformly opened on the opposite side walls of the two air distribution plates 324. Sliders 325 slidably arranged inside the lifting sliding grooves 322 are fixedly arranged on both sides of the back of one of the air distribution plates 324. A guide rod 326 is fixedly arranged at the bottom of the slider 325. The bottom end of the guide rod 326 slidably penetrates the lifting sliding groove 322 and extends to the outside. A third spring 327 is slidably sleeved on the outer wall of the guide rod 326 and located inside the lifting sliding groove 322. A gas supply component 328 for supplying air into the air distribution plate 324 is arranged on the outer wall of the air distribution plate 324. The two air distribution plates 324 are connected by a hose. The inside of the cross plate 323 is a hollow cavity structure, and the hose is fixedly arranged inside the hollow cavity of the cross plate 323. The gap between the two air distribution plates 324 is larger than the thickness of the U-shaped limiting frame 312. That is, after the two air distribution plates 324 move downward, the U-shaped limiting frame 312 can be covered inside them. Even if the U-shaped limiting frame 312 is slightly inclined, the two air distribution plates 324 can still cover it inside. And the width dimension of the air distribution plate 324 is slightly smaller than the distance between the opposite inner walls of the first carrier 311 to ensure that the air distribution plate 324 will not interfere with the first carrier 311 when moving downward. An arc-shaped convex block is fixedly arranged on the top of the cross plate 323. When the arc-shaped convex block rotates, it will meet the driving block 9. The distance that the driving block 9 pushes the arc-shaped convex block downward just satisfies that the two air distribution plates 324 cover the automobile engine cover inside.

[0065] The gas supply component 328 includes a blower tube 3281 fixedly arranged on the outer wall of the air distribution plate 324 by bolts, a cover plate 3282 fixedly arranged on the outer wall of the blower tube 3281, and an exhaust port opened on the side wall of the blower tube 3281. The exhaust port is communicated with the interior of the cavity of the air distribution plate 324 through a pipeline. A plurality of air inlets are evenly opened on the outer wall of the cover plate 3282. A dust-proof net for filtering dust is fixedly arranged inside each air inlet. A transmission 3283 is fixedly arranged on the outer wall of the cover plate 3282. A second helical gear 3284 meshingly connected with the first arc-shaped driving rack 4 is fixedly arranged on the input shaft of the transmission 3283. And a fan blade 3285 is fixedly arranged inside the blower tube 3281 on the output shaft of the transmission 3283. The transmission 3283 is used to increase the rotation speed of the fan blade 3285.

[0066] A controller for controlling the operation of the servo motor and a surface defect detection module are also fixedly arranged on the outer wall of the inspection table 1. The surface defect detection module is used to receive the surface image data of the engine cover plate input by the first inspection device 6 and the second inspection device 7, analyze the defects of the image, and mark the defective images.

[0067] An embodiment of the present invention also provides a surface defect detection method for processing an engine cover plate, which is used for a surface defect detection device for processing an engine cover plate. The method includes the following steps:

[0068] Step 1: First, load the engine cover plate into multiple bearing mechanisms 3 in sequence, and ensure that the bearing mechanism 3 stably clamps the engine cover plate. The engine cover plate after being stably clamped is in a vertical state. The specific process is as follows: Vertically place the vehicle cover plate inside the inner wall of the U-shaped limiting frame 312, and the bottom of the vehicle cover plate contacts the top of the lifting plate 317. Then press down the vehicle cover plate so that its bottom pushes down the lifting plate 317. After the top of the lifting plate 317 is subjected to pressure, it synchronously drives the first rack 318 to move downward. Since the first rack 318 is meshed and connected with the gear 3115 and the second rack 3113, when the first rack 318 moves downward, it drives the gear 3115 to rotate. While the gear 3115 rotates, it can drive the second rack 3113 to move upward. Since a plurality of wedge-shaped blocks 3114 are uniformly fixed on the inner wall of the U-shaped driving plate 3112, and the positions of the clamping arms 31161 correspond to those of the wedge-shaped blocks 3114 one by one, and the clamping arms 31161 slide along the outer wall of the wedge-shaped blocks 3114. When the wedge-shaped blocks 3114 move upward along the cavity of the U-shaped limiting frame 312, the clamping arms 31161 are pushed by the wedge-shaped blocks 3114 and move away from the U-shaped limiting frame 312. A plurality of clamping arms 31161 on the opposite side walls of the U-shaped limiting frame 312 move toward each other simultaneously until the ends of the clamping arms 31161 abut against the side wall of the engine cover plate and can stably clamp the engine cover plate. At this time, lock the position of the first rack 318 with a fastening bolt. At this time, the engine cover plate is stably clamped. At this time, manually fine-tune the U-shaped limiting frame 312 to ensure that the position of the U-shaped limiting frame 312 is in a vertical state. Since the rotary damper 313 can prevent the rotation of the U-shaped limiting frame 312, the U-shaped limiting frame 312 can maintain a vertical state both before and after clamping the engine cover plate.

[0069] Step 2: Start the servo motor to drive the turntable 2 to rotate slowly and uniformly. When one of the bearing mechanisms 3 loaded with the engine cover plate passes directly below the driving block 9, the driving block 9 drives the bearing mechanism 3 to complete the cleaning operation of the engine cover plate. Subsequently, the first detection device 6 immediately takes a photo of one surface of the engine cover plate and performs defect detection on this surface.

[0070] The specific process is as follows: The servo motor is controlled by the controller to rotate at a low speed and a constant speed. When the cross plate 323 rotates to meet the driving block 9, since the two side walls of the driving block 9 are both rounded, and its bottom is a horizontal plane, the cross plate 323 gradually slides along the rounded surface of the side wall of the driving block 9 to the horizontal plane at its bottom. During this process, the height of the air distribution plate 324 gradually decreases, and the two air distribution plates 324 on the front and rear sides completely cover the engine cover. During the sliding of the cross plate 323 along the horizontal plane at the bottom of the driving block 9, after the second bevel gear 3284 synchronously moves downward, the second bevel gear 3284 engages with the first arc-shaped driving rack 4. When the carrying mechanism 3 continues to rotate, the first arc-shaped driving rack 4 drives the second bevel gear 3284 to rotate. The axial rotational speed is input into the transmission 3283 and drives the fan blade 3285 to rotate after acceleration. The suction force generated by the rapid rotation of the fan blade 3285 sucks the external air into the inside of the air duct 3281. The air is conveyed into the air distribution plate 324 through the exhaust port on the other side of the air duct 3281, and the air is quickly discharged through multiple air holes. The engine cover located between the two air distribution plates 324 is purged by the high-speed flowing air current, and the dust and impurities attached to the surface of the engine cover are separated. When the cross plate 323 moves upward along the other side wall of the driving block 9, the air distribution plate 324 synchronously moves upward along the lifting sliding groove 322 and finally returns to its original position. After being cleaned, the engine cover rotates to a position directly opposite to the first detection device 6. The first detection device 6 continuously takes pictures of the surface of the engine cover, and the captured pictures are transmitted to the surface defect detection module by means of wireless WIFI transmission. The surface defect detection module analyzes the defects of the captured images and marks the engine covers with scratches, black spots or deformations on the surface.

[0071] Step 3: Then, the carrying mechanism 3 meets the second arc-shaped driving rack 5 and is driven by the second arc-shaped driving rack 5 to make a 180-degree flip, and the other side of the engine cover faces the second detection device 7. The second detection device 7 continuously takes pictures of the passing engine cover and detects the defects on the other side of the engine cover.

[0072] The specific process is as follows: The engine cover after the defect detection on one side moves to the position of the second arc-shaped driving rack 5. The first bevel gear 316 engages with the second arc-shaped driving rack 5. The first bevel gear 316 is driven by the second arc-shaped driving rack 5 to make a 180-degree flip. Due to the limiting effect of the rotary damper 313, after the U-shaped limiting frame 312 flips, its position remains stable. After being flipped, the engine cover rotates to a position directly opposite to the second detection device 7. The second detection device 7 continuously takes pictures of the surface of the engine cover, and the captured pictures are transmitted to the surface defect detection module by means of wireless WIFI transmission. The surface defect detection module analyzes the defects of the captured images and marks the engine covers with scratches, black spots or deformations on the surface.

[0073] Step 4: When the carrying mechanism 3 loaded with the engine cover plate that has undergone double-sided defect detection passes through the arc-shaped driving rack three 10, it flips 180 degrees again and returns to its original state;

[0074] The specific process is as follows: The engine cover plate that has undergone double-sided defect detection continues to rotate to the position where it meets the arc-shaped driving rack three 10. The first helical gear 316 meshes with the arc-shaped driving rack three 10 again. During the meshing connection between the first helical gear 316 and the arc-shaped driving rack three 10, it flips 180 degrees, and the carrying mechanism 3 returns to its original position state. After the surface defect detection of all the engine cover plates in all the carrying mechanisms 3 is completed, the servo motor is turned off, and the engine cover plate can be removed.

[0075] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0076] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface defect detection device for engine cover processing, characterized in that: include: The inspection table is used to provide an operating platform for the surface defect detection of the engine cover plate, and a servo motor is fixedly arranged inside the inspection table, and the output shaft of the servo motor rotates through the inspection table and is fixedly provided with a turntable; A bearing mechanism, wherein a plurality of the bearing mechanisms are evenly arranged on the side wall of the turntable, and are used to clamp the engine cover plate to be inspected, and clean the engine cover plate before surface defect inspection. An arc-shaped driving rack is fixedly arranged on one side of the top of the inspection table, and is used to drive the bearing mechanism to flip during the inspection process, so as to cooperate in completing the double-sided inspection of the engine cover plate; A turning drive assembly, comprising a second arc-shaped driving rack and a third arc-shaped driving rack fixedly arranged on the top of the detection platform, for respectively driving the bearing mechanism to complete a 180-degree turning; The inspection mechanism includes an inspection device 1 and an inspection device 2 respectively fixedly arranged on both sides of the top of the inspection platform, wherein the inspection device 1 and the inspection device 2 are respectively used to collect images of the front and back sides of the engine cover plate to provide data support for subsequent defect detection; The cleaning drive assembly comprises a bearing platform fixedly arranged on the top of the detection platform through a mounting bracket and a driving block fixedly arranged on the bottom of the bearing platform.

2. A surface defect detection device for engine cover processing according to claim 1, characterized in that: The bearing mechanism comprises a movable flip assembly for clamping the engine cover plate and a cleaning assembly arranged on the side wall of the movable flip assembly for cleaning floating dust and impurities on the surface of the engine cover plate; The mobile flip assembly includes a carrier frame 1 fixedly arranged on the side wall of the turntable and a U-shaped limit frame rotatably arranged on the inner wall of the carrier frame 1 via a rotating shaft, wherein one of the rotating shafts rotates through the carrier frame 1 and extends to the outside, and a rotation damper for limiting its rotation is rotatably sleeved on the outer wall of the rotating shaft, and the rotation damper is fixedly connected to the outer wall of the carrier frame 1 via a flange; Another rotating shaft rotates through the first carrier and is connected to a flip transmission assembly, the flip transmission assembly includes a worm wheel fixedly sleeved on the outer wall of the rotating shaft and a worm screw rotatably arranged on a side wall of the carrier through a bracket and meshingly connected with the worm wheel, one end of the worm screw is fixedly provided with a bevel gear screw meshingly connected with a second arc-shaped driving rack; A lifting component for lifting the engine cover is arranged on the inner wall of the U-shaped limit frame, the interior of the carrier frame 1 is a hollow structure, and through grooves connected to the interior are opened on both sides of its outer wall, and a clamping component for limiting the position of the engine cover is arranged inside the cavity of the carrier frame 1.

3. A surface defect detection device for engine cover processing according to claim 2, characterized in that: The lifting assembly includes a lifting plate slidably arranged on the inner wall of the U-shaped limit frame, racks are fixedly arranged on both sides of the front of the lifting plate, lifting columns are fixedly arranged on both sides of the bottom of the lifting plate, the bottom ends of the lifting columns slide through the U-shaped limit frame and extend to the outside, and a spring is slidably sleeved on the outer wall of the lifting column and between the lifting plate and the opposite side walls of the U-shaped limit frame.

4. A surface defect detection device for engine cover processing according to claim 3, characterized in that: The clamping component includes a U-shaped driving plate slidably arranged inside the U-shaped limit frame cavity, a rack 2 is fixedly arranged on the side wall of the U-shaped driving plate and inside the through groove, a U-shaped groove is opened on the side wall of the U-shaped driving plate, a plurality of wedge blocks are fixedly arranged on the inner wall of the U-shaped groove in sequence from top to bottom, a gear is rotatably arranged inside the through groove and meshed with the rack 2 and the rack 1 at the same time, and a plurality of clamping units corresponding to the positions of the wedge blocks are arranged in sequence from top to bottom on the side wall of the U-shaped limit frame.

5. The surface defect detection device for engine cover processing according to claim 4, characterized in that: The clamping unit includes a clamping arm that slides through the U-shaped limit frame and a rubber clamping block fixedly arranged at one end of the clamping arm. A spring limit plate is slidingly sleeved on the outer wall of the clamping arm. The spring limit plate is fixedly arranged on the side wall of the U-shaped limit frame by bolts. A spring 2 is slidingly sleeved on the outer wall of the clamping arm and located between the U-shaped limit frame and the spring limit plate. One end of the clamping arm is slidingly arranged on the outer wall of the wedge block.

6. The surface defect detection device for engine cover processing according to claim 2, characterized in that: The cleaning component includes a carrier frame 2 fixedly arranged on the outer wall of the carrier frame 1 and a lifting slide groove opened on both sides of the outer wall of the carrier frame 2, a horizontal plate is arranged on one side of the carrier frame 2, and air distribution plates are fixedly arranged on the front and rear sides of the bottom of the horizontal plate, the interior of the air distribution plate is a hollow cavity structure, and a plurality of air outlet holes connected with the hollow cavities are evenly opened on the opposite side walls of the two air distribution plates, and sliders slidably arranged inside the lifting slide groove are fixedly arranged on both sides of the back side of one of the air distribution plates, and a guide rod is fixedly arranged on the bottom of the slider, and the bottom end of the guide rod slides through the lifting slide groove and extends to the outside, a spring three is arranged on the outer wall of the guide rod and on the internal sliding sleeve of the lifting slide groove, and a gas supply component for conveying air to the interior thereof is arranged on the outer wall of the air distribution plate.

7. A surface defect detection device for engine cover processing according to claim 6, characterized in that: The gas supply assembly includes a wind tube fixedly arranged on the outer wall of the air distribution plate by bolts, a cover plate fixedly arranged on the outer wall of the wind tube and an exhaust port opened on the side wall of the wind tube, the exhaust port is connected with the interior of the air distribution plate cavity through a pipeline, a plurality of air inlets are evenly arranged on the outer wall of the cover plate, a dustproof net for filtering dust is fixedly arranged inside each air inlet, a transmission is fixedly arranged on the outer wall of the cover plate, a bevel gear 2 meshingly connected to an arc-shaped driving rack 1 is fixedly arranged on the input shaft of the transmission, and fan blades are fixedly arranged on the output shaft of the transmission and located inside the wind tube, and the transmission is used to increase the rotation speed of the fan blades.

8. The surface defect detection device for engine cover processing according to claim 1, characterized in that: A controller for controlling the operation of the servo motor and a surface defect detection module are also fixedly arranged on the outer wall of the detection platform. The surface defect detection module is used to receive the surface image data of the engine cover input by the detection device 1 and the detection device 2, and perform defect analysis on the image and mark the defective image.

9. A surface defect detection method for engine cover processing, characterized in that: The surface defect detection device for engine cover processing according to any one of claims 1 to 8 comprises the following steps: Step 1: First, load the engine cover into a plurality of bearing mechanisms in sequence, and ensure that the bearing mechanisms stably clamp the engine cover, and the stably clamped engine cover is in a vertical state; Step 2: Start the servo motor to drive the turntable to rotate at a low and uniform speed. When one of the bearing mechanisms loaded with the engine cover passes directly under the driving block, the driving block drives the bearing mechanism to complete the cleaning operation of the engine cover. Then the detection device immediately takes a photo of one of the surfaces of the engine cover to detect defects on the surface. Step 3: Then, the bearing mechanism meets the second arc-shaped driving rack and is driven by the second arc-shaped driving rack to flip 180 degrees, with the other side of the engine cover facing the second detection device. The second detection device continuously takes pictures of the passing engine cover and performs defect detection on the other side of the engine cover; Step 4: When the bearing mechanism loaded with the engine cover plate that has undergone double-sided defect inspection passes through the arc-shaped driving rack 3, it is flipped 180 degrees again to restore to its original state.

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