A positioning device for detecting leakage of an automobile water pump cover plate

Abstract

The application relates to the technical field of cover positioning, in particular to a positioning device for automobile water pump cover plate leakage detection, which comprises a detection table body, a water immersion tank, a movable sliding table, an industrial camera, a spraying assembly and a water immersion pickup assembly. The positioning device for automobile water pump cover plate leakage detection can immediately grab and transfer unqualified products from the detection station to the water immersion tank and the spraying station after detecting the unqualified products through the water immersion pickup assembly, and manual carrying is not needed. After detecting bubbles, the industrial camera can automatically take photos or videos, and the accurate position and shape of the leakage point can be recorded. The image data can be bound with the serial number of the workpiece, the detection time and other information, and uploaded to a quality management system. Based on the data, high-frequency leakage areas and leakage modes can be analyzed and counted, and a cost-effective path leading to automatic leakage positioning is provided for small and medium-sized enterprises.

Description

Technical Field

[0001] This application relates to the field of cover plate positioning technology, and in particular to a positioning device for detecting leakage in an automotive water pump cover plate. Background Technology

[0002] The automotive oil pump is an important component of the engine lubrication system. It mainly consists of an oil pump cover and an oil pump housing. The automotive oil pump cover is an irregularly shaped cover used to protect the automotive oil pump. The function of the oil pump cover is only to ensure the sealing reliability of the oil pump. However, due to the limited stability of the sealing rubber ring or paper gasket, leakage problems are prone to occur.

[0003] Chinese utility model patent CN222419436U discloses a leakage detection device for an automotive oil pump cover. The device consists of a mounting plate with a positioning seat above it for positioning the oil pump cover. Above the positioning seat are a sealing cover and a piston cylinder. When detecting leakage in the oil pump cover, the sealing cover is pressed against it, creating a sealed cavity. By adjusting the position of the movable plug inside the piston cylinder, the air inside the sealing cover can be compressed. The device can quickly detect leakage in the oil pump cover by observing whether the air compression on the pressure gauge matches the movement distance of the movable plug.

[0004] Regarding the aforementioned technologies, the inventors believe the following technical shortcomings require improvement: Although existing detection methods have spurred more advanced online, non-destructive, and automated positioning technologies such as multi-channel testing, acoustic imaging, and laser scanning, these automated positioning technologies are costly and unsuitable for small and medium-sized enterprises. When traditional devices detect defective products, the positioning method used is offline, non-automated, and based on human vision. Traditional devices detect pressure changes and the overall physical quantities of gas flow; they cannot distinguish whether the leak signal originates from a large leak point or the superposition of multiple small leak points. Utility Model Content

[0005] This application provides a positioning device for detecting leakage in an automotive water pump cover, in order to improve the following technical problem: Although existing detection methods have led to more advanced online, non-destructive, and automated positioning technologies such as multi-channel testing, acoustic imaging, and laser scanning, the aforementioned automated positioning technologies are costly and not suitable for small and medium-sized enterprises.

[0006] This application provides a positioning device for detecting leakage in an automotive water pump cover, employing the following technical solution:

[0007] A positioning device for detecting leakage in an automotive water pump cover includes a detection platform body, a water immersion tank, a movable slide, an industrial camera, a spray assembly, and a water immersion pickup assembly. The water immersion tank is installed inside one side of the detection platform body. The movable slide is slidably connected to the top of the detection platform body. The water immersion pickup assembly is installed on the top of the detection platform body. The industrial camera is installed on one side of the water immersion pickup assembly. The spray assembly is installed on the side of the detection platform body away from the water immersion tank.

[0008] In one feasible technical solution of this application, the immersion pickup assembly includes a lifting bracket, a stepper motor, a threaded rod, a linear shaft, a sleeve support, a positioning plate, a hydraulic cylinder, and a clamping arm body. The stepper motor is mounted on the top of the lifting bracket. One end of the threaded rod is fixedly connected to the motor shaft of the stepper motor via a coupling. The linear shaft is symmetrically distributed on both sides of the threaded rod. The sleeve support is threaded onto the outside of the threaded rod. The positioning plate is mounted on the lower end of the sleeve support. The hydraulic cylinder is mounted on one side of the positioning plate. The clamping arm body is mounted on the outside of the output end of the hydraulic cylinder.

[0009] In one feasible technical solution of this application, the spraying assembly includes a connecting hose, a liquid guiding platform, and a foaming liquid nozzle. The connecting hose is fixedly connected to the top side of the liquid guiding platform and is used to connect to the foaming liquid pipeline. The liquid guiding platform is fixedly connected to the top of the detection platform body. The foaming liquid nozzle is installed on the top inner side of the liquid guiding platform and is used to spray foaming liquid onto the surface of the cover plate after it has been immersed in water.

[0010] In one feasible technical solution of this application, the testing platform body is further provided with a liquid storage tank for storing foaming liquid, and the liquid storage tank is located below the nozzle of the foaming liquid nozzle.

[0011] In one feasible technical solution of this application, a finely ground slider and a groove that are mutually adapted are further provided at the connection between the movable slide and the detection stage body.

[0012] In one feasible technical solution of this application, the top inner side of the sleeve support is respectively provided with threaded grooves and through holes that are adapted to the dimensions of the threaded rod and the linear shaft.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] The device's immersion pickup component acts as an automated robotic arm. Upon detecting a defective product, it immediately picks it up from the inspection station and transfers it to the immersion tank and spray station, eliminating the need for manual handling. The industrial camera automatically captures photos or videos upon detecting air bubbles, recording the precise location and shape of the leak. This image data can be linked to the workpiece's serial number, inspection time, and other information, and uploaded to the quality management system. Analysis of this data allows for the identification of high-frequency leak areas and patterns, providing SMEs with a cost-effective path to automated leak location. Furthermore, the liquid storage tank collects dripping foaming liquid, preventing contamination of the work surface. The spray component uses foaming liquid nozzles for precise and uniform spraying, requiring less material compared to manual application, maintaining a clean work area, and reducing material consumption. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the positioning device for detecting leakage in an automotive water pump cover according to an embodiment of this application.

[0017] Figure 2 This is a distribution diagram of the spray assembly in the embodiments of this application.

[0018] Figure 3 This is a schematic diagram of the structure of the water immersion pickup component in the embodiments of this application.

[0019] Figure 4 This is a distribution diagram of the industrial cameras in the embodiments of this application.

[0020] Figure 5 This is an exploded view of the movable slide and the detection stage body in the embodiments of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Testing table body; 2. Immersion tank; 3. Moving slide; 4. Industrial camera;

[0023] 5. Spray assembly; 51. Connecting hose; 52. Liquid guide platform; 53. Foaming liquid nozzle;

[0024] 6. Water-immersed pickup assembly; 61. Lifting bracket; 62. Stepper motor; 63. Threaded rod; 64. Linear shaft; 65. Sleeve support; 66. Positioning plate; 67. Hydraulic cylinder; 68. Clamping arm body;

[0025] 7. Liquid storage tank; 8. Finely ground slider; 9. Slide groove; 10. Threaded groove; 11. Through hole. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses a positioning device for detecting leakage in an automotive water pump cover. (Refer to...) Figures 1 to 5 The positioning device for detecting leakage of automotive water pump cover plates includes a detection platform body 1, a water immersion tank 2, a movable slide 3, an industrial camera 4, a spray assembly 5, and a water immersion pickup assembly 6. The water immersion tank 2 is installed inside one side of the detection platform body 1. The movable slide 3 is slidably connected to the top of the detection platform body 1. The water immersion pickup assembly 6 is installed on the top of the detection platform body 1. The industrial camera 4 is installed on one side of the water immersion pickup assembly 6. The spray assembly 5 is installed on the side of the detection platform body 1 away from the water immersion tank 2.

[0032] The workpiece is precisely transferred above the immersion tank 2 and submerged in water. Simultaneously, low-pressure air is introduced into the workpiece, and an industrial camera 4, fixed to the pickup assembly, is positioned to capture real-time images of the workpiece surface. Any gas leaking from any point of leakage forms bubbles in the water, which are clearly captured by the industrial camera 4, completing the initial positioning.

[0033] The immersion pickup assembly 6 includes a lifting bracket 61, a stepper motor 62, a threaded rod 63, a linear shaft 64, a sleeve support 65, a positioning plate 66, a hydraulic cylinder 67, and a clamping arm body 68. The stepper motor 62 is mounted on the top of the lifting bracket 61. One end of the threaded rod 63 is fixedly connected to the motor shaft of the stepper motor 62 via a coupling. The linear shaft 64 is symmetrically distributed on both sides of the threaded rod 63. The sleeve support 65 is threaded onto the outside of the threaded rod 63. The positioning plate 66 is mounted on the lower end of the sleeve support 65. The hydraulic cylinder 67 is mounted on one side of the positioning plate 66. The clamping arm body 68 is mounted on the outside of the output end of the hydraulic cylinder 67.

[0034] The immersion pickup assembly 6 serves as the central actuator. First, the hydraulic cylinder 67 drives the clamping arm body 68 to firmly grasp the workpiece to be measured. Then, the stepper motor 62 starts, driving the entire assembly to move smoothly in the horizontal direction through the precisely matched threaded rod 63 and linear shaft 64. Its power transmission relies on the threaded groove 10 and through hole 11 opened on the sleeve support 65, ensuring transmission accuracy and structural rigidity.

[0035] The spray assembly 5 includes a connecting hose 51, a liquid guide platform 52, and a foaming liquid nozzle 53. The connecting hose 51 is fixedly connected to the top side of the liquid guide platform 52 and is used to connect to the foaming liquid pipeline. The liquid guide platform 52 is fixedly connected to the top of the detection platform body 1. The foaming liquid nozzle 53 is installed on the top inner side of the liquid guide platform 52 and is used to spray foaming liquid onto the surface of the cover plate after it has been immersed in water.

[0036] After the immersion test is completed, the workpiece is received by the movable slide table 3 and transferred to the spray assembly 5. The precision-ground slider 8 and slide groove 9 at the bottom of the slide table ensure the smoothness and accuracy of the transfer process. The spray assembly 5 uses foaming liquid nozzles 53 to evenly spray foaming liquid onto the wet workpiece surface. Under the action of continuously introduced low-pressure air, the foaming liquid at the leakage point rapidly expands to form a conspicuous foam ball, greatly enhancing the visibility.

[0037] The testing platform body 1 is also equipped with a liquid storage tank 7 for storing foaming liquid, which is located below the nozzle of the foaming liquid nozzle 53.

[0038] The connection between the movable slide table 3 and the inspection table body 1 is also provided with a finely ground slide block 8 and a slide groove 9 that are compatible with each other.

[0039] The top inner side of the sleeve support 65 is provided with threaded grooves 10 and through holes 11 that are adapted to the dimensions of the threaded rod 63 and the linear shaft 64, respectively.

[0040] The usage process of the positioning device for detecting leakage in the car water pump cover according to this application embodiment is roughly as follows:

[0041] The car water pump cover is placed on the movable slide 3, and the immersion pickup assembly 6 is activated. The hydraulic cylinder 67 drives the clamping arm body 68 to extend and clamp the defective water pump cover. The stepper motor 62 starts, driving the threaded rod 63 to rotate. Through the engagement of the threaded groove 10 on the top of the sleeve support 65 with the threaded rod 63, and the sliding fit between the through hole 11 and the linear shaft 64, the entire pickup mechanism moves smoothly horizontally. The pickup assembly moves the workpiece horizontally to directly above the immersion tank 2. The pickup assembly lowers the workpiece through its lifting mechanism, fully immersing it in the water of the immersion tank 2. At this time, the inspection table introduces low-pressure air into the sealed cavity inside the workpiece. If there is a leak, bubbles will emerge from the water. The industrial camera 4 is mounted on one side of the pickup assembly, moves along with it, and aims at the workpiece to begin recording the location where the bubbles are generated. The workpiece is lifted from the water by the pickup assembly and transported to the spray assembly 5 station via the movable slide 3. The movable slide table 3, with its precision-ground slider 8 at the bottom, precisely engages with the sliding groove 9 on the inspection table body 1, ensuring smooth movement and accurate positioning. The spray assembly 5 then begins operation. Foaming liquid is introduced from an external pipeline via a connecting hose 51, and transported through the liquid guide platform 52 to the foaming liquid nozzle 53, where it is evenly sprayed onto the wet workpiece surface. Low-pressure air continues to be introduced into the workpiece. At the leak point, the gas penetrates the liquid film on the workpiece surface, mixing with the foaming liquid to produce very noticeable and stable foam. The industrial camera 4 takes another picture; because foam is more persistent and visible than bubbles in water, this allows for precise location and confirmation of even minute leaks. Dripping foaming liquid is collected by the reservoir 7 below, preventing contamination of the table surface. After the positioning process is complete, the pick-up assembly places the workpiece with the identified leak location into the designated non-conforming product area. Subsequently, the entire immersion pickup assembly 6 and the moving slide 3 are reset to the standby position, waiting for the next defective product. The image or video data collected by the industrial camera 4 is uploaded to the computer system and bound to the workpiece's identity information for generating quality reports and conducting subsequent process analysis.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A positioning device for detecting leakage in an automotive water pump cover, characterized in that, The device includes a testing platform body (1), a water immersion tank (2), a movable slide (3), an industrial camera (4), a spray assembly (5), and a water immersion pickup assembly (6). The water immersion tank (2) is installed inside one side of the testing platform body (1). The movable slide (3) is slidably connected to the top of the testing platform body (1). The water immersion pickup assembly (6) is installed on the top of the testing platform body (1). The industrial camera (4) is installed on one side of the water immersion pickup assembly (6). The spray assembly (5) is installed on the side of the testing platform body (1) away from the water immersion tank (2).

2. The positioning device for detecting leakage in an automotive water pump cover according to claim 1, characterized in that, The immersion pickup assembly (6) includes a lifting bracket (61), a stepper motor (62), a threaded rod (63), a linear shaft (64), a sleeve support (65), a positioning plate (66), a hydraulic cylinder (67), and a clamping arm body (68). The stepper motor (62) is mounted on the top of the lifting bracket (61). One end of the threaded rod (63) is fixedly connected to the motor shaft of the stepper motor (62) via a coupling. The linear shaft (64) is symmetrically distributed on both sides of the threaded rod (63). The sleeve support (65) is threaded onto the outside of the threaded rod (63). The positioning plate (66) is mounted on the lower end of the sleeve support (65). The hydraulic cylinder (67) is mounted on one side of the positioning plate (66). The clamping arm body (68) is mounted on the outside of the output end of the hydraulic cylinder (67).

3. The positioning device for detecting leakage in an automotive water pump cover according to claim 1, characterized in that, The spray assembly (5) includes a connecting hose (51), a liquid guide platform (52), and a foaming liquid nozzle (53). The connecting hose (51) is fixedly connected to the top side of the liquid guide platform (52) and is used to connect to the foaming liquid pipeline. The liquid guide platform (52) is fixedly connected to the top of the detection platform body (1). The foaming liquid nozzle (53) is installed on the top inner side of the liquid guide platform (52) and is used to spray foaming liquid onto the surface of the cover plate after it has been soaked in water.

4. The positioning device for detecting leakage in an automotive water pump cover according to claim 3, characterized in that, The testing platform body (1) is also provided with a liquid storage tank (7) for storing foaming liquid, and the liquid storage tank (7) is located below the nozzle of the foaming liquid nozzle (53).

5. The positioning device for detecting leakage in an automotive water pump cover according to claim 1, characterized in that, The connection between the movable slide (3) and the detection table body (1) is also provided with a finely ground slide block (8) and a slide groove (9) that are compatible with each other.

6. The positioning device for detecting leakage in an automotive water pump cover according to claim 2, characterized in that, The top inner side of the sleeve support (65) is provided with threaded grooves (10) and through holes (11) that are adapted to the dimensions of the threaded rod (63) and the linear shaft (64).

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