A device for detecting surface defects of an aluminum alloy motor casing

Abstract

The utility model discloses a kind of detection devices of surface defect of aluminium alloy motor casing, it is related to aluminium alloy motor casing detection technical field, including table body and detection unit;Table body: top surface is provided with fixed frame, the both sides of the top surface of fixed frame are equipped with support plate, the top surface of table body is equipped with cleaning unit;Detection unit: including industrial camera, base, linear motor, connecting frame, dark box cover, limit block and ultraviolet lamp, the surface of right side support plate is fixed in linear motor, the side of linear motor mobile base is provided with connecting frame, this detection device of surface defect of aluminium alloy motor casing, by main liquid pump cooperation atomizing nozzle, fluorescent liquid is evenly sprayed on the surface of aluminium alloy motor casing, and in closed dark box environment, the fluorescence signal at defect place is excited using ultraviolet, so that industrial camera can accurately capture the crack, air hole and other defects on aluminium alloy motor casing, to effectively improve the accuracy of detection.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy motor housing inspection technology, specifically to a device for detecting surface defects in aluminum alloy motor housings. Background Technology

[0002] Aluminum alloy motor housings are widely used in industrial motors due to their excellent thermal conductivity, lightweight, and high strength. However, during the manufacturing process (such as die casting, stretching, and machining), minor defects such as cracks, porosity, and scratches inevitably occur on the surface. These defects not only affect the appearance quality of the product but also reduce the mechanical strength, sealing performance, and service life of the motor, and may even lead to safety accidents. Therefore, it is crucial to conduct rigorous quality inspection of the motor housing surface before it leaves the factory. Existing patent application number 202120846764.8 discloses a detection device for surface defects of motor housing, which relates to the field of motor housing inspection. It includes a CCD detector body, on which two clamping plates are movably mounted. Each clamping plate is fixedly mounted with a fixing block. Each fixing block has a sliding hole. The same sliding rod is movably mounted in the two sliding holes. Mounting blocks are fixedly mounted at both ends of the sliding rod. Both mounting blocks are fixedly mounted on the CCD detector body. A driven rod is movably mounted on each of the two fixing blocks. The same rotating shaft is rotatably mounted on the two driven rods. Traditional visual inspection methods mostly involve taking pictures and analyzing images under visible light. However, for highly reflective materials like aluminum alloys, changes in ambient light and reflections and shadows caused by the curved surface structure of the casing can severely interfere with image quality and result in poor detection accuracy. Therefore, we propose a detection device for surface defects of aluminum alloy motor casings. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a detection device for surface defects of aluminum alloy motor housing. The device uses a main liquid pump and an atomizing nozzle to uniformly spray fluorescent liquid onto the surface of the aluminum alloy motor housing. In a closed dark chamber environment, ultraviolet light is used to excite the fluorescent signal at the defect, so that an industrial camera can accurately capture the minute cracks, pores and other defects on the aluminum alloy motor housing, thereby effectively improving the accuracy of detection and solving the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a detection device for surface defects of aluminum alloy motor housing, comprising a platform and a detection unit; Platform: A fixed frame is provided on the top surface, and support plates are provided on both sides of the top surface of the fixed frame. A cleaning unit is provided on the top surface of the platform. The detection unit includes an industrial camera, a base, a linear motor, a connecting frame, a darkroom cover, a limiting block, and ultraviolet lamps. The linear motor is fixed to the surface of the right support plate. A connecting frame is provided on the side of the linear motor's moving part. The connecting frame is connected to the right side of the darkroom cover. The through groove on the side of the darkroom cover is slidably connected to the support plate. A limiting block that is slidably installed with a limiting groove on the surface of the support plate is fixed in the through groove of the darkroom cover. Ultraviolet lamps are installed at the four corners inside the darkroom cover. There are two bases, which are fixed to the inner side of the right support plate vertically. The industrial camera is placed inside the base. The system also includes a controller, which is fixed to the top surface of the platform. The input terminals of the industrial camera, linear motor, and ultraviolet lamp are electrically connected to the output terminal of the controller, and the input terminal of the controller is electrically connected to the output terminal of an external power supply.

[0005] The linear motor is activated to lower the dark chamber cover, which then works with the fixed frame to create a dark chamber environment. This allows ultraviolet lamps to irradiate the surface of the aluminum alloy motor housing, thereby improving the accuracy of industrial camera inspection.

[0006] Furthermore, the detection unit also includes an atomizing nozzle, a spray pipe, a fluorescent liquid tank, a liquid level window, a main liquid pump, and an electric push rod. The electric push rod is fixed to the surface of the left support plate, and its inner end is connected to the outer side of the spray pipe. The atomizing nozzle is threaded onto the outlet hole on the inner side of the spray pipe. The fluorescent liquid tank is fixed to the surface of the left support plate, and the main liquid pump is placed inside the fluorescent liquid tank. The outlet pipe of the main liquid pump is connected to the inlet of the spray pipe. A liquid level window is provided on the surface of the fluorescent liquid tank. The input ends of the main liquid pump and the electric push rod are electrically connected to the output end of the controller. The electric push rod is activated to adjust the distance between the spray pipe and the aluminum alloy motor housing. The main liquid pump is activated to atomize the fluorescent liquid through the atomizing nozzle and spray it evenly onto the surface of the aluminum alloy motor housing.

[0007] Furthermore, the cleaning unit includes a distribution pipe, an annular spray nozzle, a secondary liquid pump, a main leakage trough, a secondary leakage trough, and a collection box. The main leakage trough is located on the top surface of the platform and has a conical top. The secondary leakage trough is located in a placement slot on the top surface of the platform. The collection box is installed on the bottom surface of the platform. The annular spray nozzle is fixed to the top surface inside the dark box cover. The liquid inlets on both sides of the top surface of the annular spray nozzle are connected to the liquid outlets at both ends of the distribution pipe. The liquid inlet of the distribution pipe is connected to the liquid outlet of the secondary liquid pump. The input end of the secondary liquid pump is electrically connected to the output end of the controller. When the secondary liquid pump is started, the cleaning liquid is flushed through the annular spray nozzle to rinse the fluorescent liquid on the surface of the aluminum alloy motor housing. The waste liquid falls into the collection box through the main leakage trough and the secondary leakage trough for collection for subsequent processing.

[0008] Furthermore, the cleaning unit also includes a T-block, a locking groove, a bracket, a screw, and a locking frame. There are two brackets, each fixed to one side of the bottom surface of the platform. A screw is rotatably mounted inside each bracket, and the screw is threadedly connected to a screw hole on the surface of the locking frame. The locking frame is slidably mounted inside the bracket. A T-block is provided on the top surface of the locking frame, and the T-block is slidably mounted to a T-groove on the bottom surface of the platform. The locking groove is formed on the surface of the collection box, and the locking groove and locking frame are correspondingly engaged. Rotating the screw causes the locking frame to engage inside the locking groove, facilitating quick assembly and disassembly of the collection box. The sliding of the T-block within the T-groove prevents damage to the screw due to stress.

[0009] Furthermore, it also includes a motor, a frame, and a rotating plate. The frame is fixed to the bottom surface of the platform, and the motor is mounted on the bottom surface of the frame. The output shaft of the motor is connected to the middle of the bottom surface of the rotating plate. The rotating plate is located in a placement slot on the top surface of the platform. The input end of the motor is electrically connected to the output end of the controller. The motor drives the rotating plate to rotate and sequentially detect the entire surface of the placed aluminum alloy motor housing to prevent problems of missed detection.

[0010] Furthermore, it also includes a display screen, which is fixed to the front side of the darkroom cover. The input end of the display screen is electrically connected to the output end of the controller. The display screen can display the defect detection images in real time for easy viewing by personnel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This device for detecting surface defects in aluminum alloy motor housings has the following advantages: 1. By starting a linear motor, the dark chamber cover is lowered and cooperates with the fixed frame to form a dark chamber environment. The main liquid pump is started to atomize the fluorescent liquid through the atomizing nozzle and spray it evenly on the surface of the aluminum alloy motor housing. The ultraviolet lamp irradiates the surface of the aluminum alloy motor housing. The ultraviolet light excites the fluorescent liquid at the defect to emit bright fluorescence. The industrial camera can then perform precise detection.

[0012] 2. By starting the auxiliary liquid pump, the cleaning liquid is flushed onto the fluorescent liquid on the surface of the aluminum alloy motor housing through the annular nozzle. The waste liquid falls into the collection tank through the main and auxiliary leakage tanks for collection in order to facilitate subsequent treatment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the detection unit structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the platform of this utility model; Figure 4 This utility model Figure 3A magnified schematic diagram of the structure at point A in the middle.

[0014] In the diagram: 1. Machine body, 2. Detection unit, 21. Industrial camera, 22. Base, 23. Linear motor, 24. Connecting frame, 25. Dark box cover, 26. Limiting block, 27. Ultraviolet lamp, 28. Atomizing nozzle, 29. Spray pipe, 210. Fluorescent liquid tank, 211. Liquid level window, 212. Main liquid pump, 213. Electric push rod, 3. Cleaning unit, 31. Distributor pipe, 32. Annular spray pipe, 33. Auxiliary liquid pump, 34. Main leakage tank, 35. Auxiliary leakage tank, 36. Collection box, 37. T-block, 38. Locking groove, 39. Bracket, 310. Screw, 311. Locking frame, 4. Fixing frame, 5. Support plate, 6. Motor, 7. Frame, 8. Rotating plate, 9. Display screen, 10. Controller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This embodiment provides a technical solution: a detection device for surface defects of aluminum alloy motor housing, including a platform 1 and a detection unit 2; Platform 1: A fixed frame 4 is provided on the top surface, and support plates 5 are provided on both sides of the top surface of the fixed frame 4. A cleaning unit 3 is provided on the top surface of platform 1. The cleaning unit 3 includes a liquid distribution pipe 31, an annular spray pipe 32, a secondary liquid pump 33, a main leakage trough 34, a secondary leakage trough 35, and a collection box 36. The main leakage trough 34 is located on the top surface of platform 1 and has a conical top. The secondary leakage trough 35 is located in a placement slot on the top surface of platform 1. The collection box 36 is installed on platform 1. The bottom surface of the annular nozzle 32 is fixed to the top surface inside the dark box hood 25. The liquid inlets on both sides of the top surface of the annular nozzle 32 are connected to the liquid outlets at both ends of the liquid distribution pipe 31. The liquid inlet of the liquid distribution pipe 31 is connected to the liquid outlet of the auxiliary liquid pump 33. The input end of the auxiliary liquid pump 33 is electrically connected to the output end of the controller 10. When the auxiliary liquid pump 33 is started, the cleaning liquid is flushed through the annular nozzle 32 to rinse the fluorescent liquid on the surface of the aluminum alloy motor housing. The waste liquid flows through the main leakage tank 34 and... The secondary leakage channel 35 falls into the collection box 36 for collection, which is then processed. The cleaning unit 3 also includes a T-block 37, a locking groove 38, a bracket 39, a screw 310, and a locking frame 311. There are two brackets 39, which are fixed on both sides of the bottom surface of the platform 1. The screw 310 is rotatably installed inside the bracket 39. The screw 310 is threadedly connected to the screw hole on the surface of the locking frame 311. The locking frame 311 is slidably installed inside the bracket 39. The top surface of the locking frame 311 is provided with a T-block 37. The T-block 37 is slidably installed in the T-groove on the bottom surface of the platform 1. The locking groove 38 is opened on the surface of the collection box 36. The locking groove 38 and the locking frame 311 are correspondingly engaged. Rotating the screw 310 causes the locking frame 311 to be engaged into the locking groove 38. This facilitates quick disassembly and assembly of the collection box 36. The sliding of the T-block 37 in the T-groove can prevent the screw 310 from being damaged by force. Detection Unit 2 includes an industrial camera 21, a base 22, a linear motor 23, a connecting frame 24, a darkroom cover 25, a limiting block 26, and ultraviolet lamps 27. The linear motor 23 is fixed to the surface of the right-side support plate 5. A connecting frame 24 is provided on the side of the linear motor 23's moving base, and the connecting frame 24 is connected to the right side of the darkroom cover 25. The through groove on the side of the darkroom cover 25 is slidably connected to the support plate 5. A limiting block 26, which is slidably installed with the limiting groove on the surface of the support plate 5, is fixed in the through groove of the darkroom cover 25. Ultraviolet lamps 27 are installed at the four corners inside the darkroom cover 25. There are two bases 22, which are fixed to the inner side of the right-side support plate 5, one above the other. The industrial camera 21 is placed inside the base 22. Detection Unit 2 also includes an atomizing nozzle 28, a spray pipe 29, a fluorescent liquid tank 210, a liquid level window 211, and a main... A liquid pump 212 and an electric actuator 213 are provided. The electric actuator 213 is fixed to the surface of the left support plate 5. The inner end of the electric actuator 213 is connected to the outer side of the spray pipe 29. The outlet hole on the inner side of the spray pipe 29 is threaded with an atomizing nozzle 28. A fluorescent liquid tank 210 is fixed to the surface of the left support plate 5. The main liquid pump 212 is placed inside the fluorescent liquid tank 210. The outlet pipe of the main liquid pump 212 is connected to the inlet of the spray pipe 29. A liquid level window 211 is opened on the surface of the fluorescent liquid tank 210. The input ends of the main liquid pump 212 and the electric actuator 213 are electrically connected to the output end of the controller 10. The electric actuator 213 is started to adjust the distance between the spray pipe 29 and the aluminum alloy motor housing. The main liquid pump 212 is started to atomize the fluorescent liquid through the atomizing nozzle 28 and spray it evenly on the surface of the aluminum alloy motor housing. The system includes a controller 10, which is fixed to the top surface of the platform 1. The input terminals of the industrial camera 21, linear motor 23, and ultraviolet lamp 27 are electrically connected to the output terminal of the controller 10. The input terminal of the controller 10 is also electrically connected to the output terminal of an external power supply. Activating the linear motor 23 lowers the darkroom cover 25 to cooperate with the fixed frame 4, forming a darkroom environment. This allows the ultraviolet lamp 27 to irradiate the surface of the aluminum alloy motor housing, thereby improving the accuracy of the industrial camera 21's detection. The system also includes a motor 6, a frame 7, and a rotating plate 8. The frame 7 is fixed to the bottom surface of the platform 1. The bottom of the frame 7... A motor 6 is mounted on the surface, and the output shaft of the motor 6 is connected to the middle of the bottom surface of the rotating plate 8. The rotating plate 8 is located in the placement slot on the top surface of the platform 1. The input end of the motor 6 is electrically connected to the output end of the controller 10. The motor 6 drives the rotating plate 8 to rotate and sequentially inspect the entire surface of the placed aluminum alloy motor housing to prevent undetected problems. It also includes a display screen 9, which is fixed to the front side of the dark box cover 25. The input end of the display screen 9 is electrically connected to the output end of the controller 10. The display screen 9 can display the defect detection images in real time for easy viewing by personnel.

[0017] The working principle of the detection device for surface defects of aluminum alloy motor housing provided by this utility model is as follows: First, the aluminum alloy motor housing is placed on the top surface of the rotating plate 8. The linear motor 23 is started to drive the dark box cover 25 to descend and cooperate with the fixed frame 4 to form a dark box environment. The electric push rod 213 is started to adjust the distance between the spray pipe 29 and the aluminum alloy motor housing. The main liquid pump 212 is started to atomize the fluorescent liquid through the atomizing nozzle 28 and spray it evenly on the surface of the aluminum alloy motor housing. The ultraviolet lamp 27 irradiates the surface of the aluminum alloy motor housing, and the ultraviolet light excites the fluorescence at the defect. The liquid emits bright fluorescence, and the industrial camera 21 can perform precise detection. The display screen 9 can display the defect detection images in real time for easy viewing. After the detection is completed, the auxiliary liquid pump 33 is started to flush the fluorescent liquid on the surface of the aluminum alloy motor housing through the annular nozzle 32. The waste liquid falls into the collection box 36 through the main leakage tank 34 and the auxiliary leakage tank 35 for collection for subsequent processing. The screw 310 is rotated to make the locking bracket 311 lock into the locking groove 38, which facilitates quick disassembly and assembly of the collection box 36.

[0018] It is worth noting that the controller 10 disclosed in the above embodiments is respectively equipped with an industrial camera 21, a linear motor 23, an ultraviolet lamp 27, a main liquid pump 212, an electric actuator 213, a secondary liquid pump 33, a motor 6, and a display screen 9. The controller 10 controls the operation of the industrial camera 21, the linear motor 23, the ultraviolet lamp 27, the main liquid pump 212, the electric actuator 213, the secondary liquid pump 33, the motor 6, and the display screen 9 using methods commonly used in the prior art.

[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for detecting surface defects in aluminum alloy motor housings, characterized in that: It includes a platform (1) and a detection unit (2); Platform (1): A fixed frame (4) is provided on the top surface. Support plates (5) are provided on both sides of the top surface of the fixed frame (4). A cleaning unit (3) is provided on the top surface of the platform (1). The detection unit (2) includes an industrial camera (21), a base (22), a linear motor (23), a connecting frame (24), a dark box cover (25), a limiting block (26), and an ultraviolet lamp (27). The linear motor (23) is fixed on the surface of the right support plate (5). The connecting frame (24) is provided on the side of the moving part of the linear motor (23). The connecting frame (24) is connected to the right side of the dark box cover (25). The through groove on the side of the dark box cover (25) is slidably connected to the support plate (5). The limiting block (26) is fixed in the through groove of the dark box cover (25) and is slidably installed with the limiting groove on the surface of the support plate (5). Ultraviolet lamps (27) are installed at the four corners inside the dark box cover (25). There are two bases (22) that are fixed on the inner side of the right support plate (5) with corresponding upper and lower parts. The industrial camera (21) is placed inside the base (22). The system also includes a controller (10), which is fixed on the top surface of the platform (1). The input terminals of the industrial camera (21), linear motor (23) and ultraviolet lamp (27) are electrically connected to the output terminal of the controller (10), and the input terminal of the controller (10) is electrically connected to the output terminal of an external power supply.

2. The detection device for surface defects of aluminum alloy motor housing according to claim 1, characterized in that: The detection unit (2) also includes an atomizing nozzle (28), a spray pipe (29), a fluorescent liquid tank (210), a liquid level window (211), a main liquid pump (212), and an electric push rod (213). The electric push rod (213) is fixed on the surface of the left support plate (5). The inner end of the electric push rod (213) is connected to the outer side of the spray pipe (29). The atomizing nozzle (28) is threaded onto the outlet hole on the inner side of the spray pipe (29). The fluorescent liquid tank (210) is fixed on the surface of the left support plate (5). The main liquid pump (212) is placed inside the fluorescent liquid tank (210). The outlet pipe of the main liquid pump (212) is connected to the inlet of the spray pipe (29). A liquid level window (211) is opened on the surface of the fluorescent liquid tank (210). The input ends of the main liquid pump (212) and the electric push rod (213) are electrically connected to the output end of the controller (10).

3. The device for detecting surface defects in an aluminum alloy motor housing according to claim 1, characterized in that: The cleaning unit (3) includes a liquid distribution pipe (31), an annular nozzle (32), a secondary liquid pump (33), a main leakage tank (34), a secondary leakage tank (35), and a collection box (36). The main leakage tank (34) is located on the top surface of the platform (1) and has a conical top. The secondary leakage tank (35) is located in the placement slot on the top surface of the platform (1). The collection box (36) is installed on the bottom surface of the platform (1). The annular nozzle (32) is fixed on the top surface inside the dark box cover (25). The liquid inlets on both sides of the top surface of the annular nozzle (32) are connected to the liquid outlets at both ends of the liquid distribution pipe (31). The liquid inlet of the liquid distribution pipe (31) is connected to the liquid outlet of the secondary liquid pump (33). The input end of the secondary liquid pump (33) is electrically connected to the output end of the controller (10).

4. The device for detecting surface defects in an aluminum alloy motor housing according to claim 3, characterized in that: The cleaning unit (3) also includes a T-shaped block (37), a locking groove (38), a bracket (39), a screw (310), and a locking frame (311). There are two brackets (39) and they are fixed on both sides of the bottom surface of the platform (1). The screw (310) is rotatably installed inside the bracket (39). The screw (310) is threadedly connected to the screw hole on the surface of the locking frame (311). The locking frame (311) is slidably installed inside the bracket (39). The top surface of the locking frame (311) is provided with a T-shaped block (37). The T-shaped block (37) is slidably installed with the T-shaped groove on the bottom surface of the platform (1). The locking groove (38) is opened on the surface of the collection box (36). The locking groove (38) and the locking frame (311) are correspondingly engaged.

5. The device for detecting surface defects in an aluminum alloy motor housing according to claim 1, characterized in that: It also includes a motor (6), a frame (7) and a rotating plate (8). The frame (7) is fixed to the bottom surface of the platform (1). The motor (6) is installed on the bottom surface of the frame (7). The output shaft of the motor (6) is connected to the middle of the bottom surface of the rotating plate (8). The rotating plate (8) is located in the placement slot on the top surface of the platform (1). The input end of the motor (6) is electrically connected to the output end of the controller (10).

6. The device for detecting surface defects in an aluminum alloy motor housing according to claim 1, characterized in that: It also includes a display screen (9), which is fixed to the front side of the dark box cover (25), and the input end of the display screen (9) is electrically connected to the output end of the controller (10).

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