A kind of detection platform for automobile water pump seal

Abstract

The application discloses a kind of for automobile water pump sealing detection platform, including shell and pump body, the pump body includes water inlet and water outlet, the shell interior is equipped with water line, is equipped with detection instrument and movable assembly at the position close to the back of the shell interior, water line part uses conveying belt and carousel collaborative operation, conveying belt realizes the continuous linear conveying of pump body, carousel is limited by intermittent rotation and arc baffle, accurately transfers pump body to detection station and completes the automatic detection of qualified or unqualified product, forms completed flow operation, significantly reduces manual intervention, detection instrument realizes detection in combination with pneumatic seal and air pressure monitoring mode, plugging head is driven vertical compression pump body water inlet in screw rod mechanism in movable assembly, simultaneously, cylinder pushes the butt joint of communication head and water outlet, constructs closed detection environment, constant air pressure is injected using air pump and pressure change is monitored in real time by sensor.

Description

Technical Field

[0001] This invention relates to the field of water pump seal testing technology, specifically to a test bench for automotive water pump seals. Background Technology

[0002] The car water pump is a core component of the engine cooling system. It drives the coolant to circulate between the engine water passages and the radiator through impeller rotation, continuously carrying away the heat generated by the engine to maintain its normal operating temperature. Sealing testing of the car water pump is crucial because leaks in critical components such as the mechanical seal and bearing seals can lead to coolant loss, engine overheating, and even serious damage. Leaking coolant can also cause other component failures or electrical short circuits. Sealing testing simulates the water pump's operating conditions at rated pressure and speed, accurately identifying leakage risks caused by seal wear, assembly defects, or material aging. This ensures the water pump maintains reliable sealing performance during vehicle operation, thereby guaranteeing the stable operation of the engine cooling system and the safety and durability of the entire vehicle.

[0003] In the prior art, publication number "CN114812956A" discloses a test bench for automotive water pump seals, including a water pump seal testing and inspection platform body, a clamping drive device, an automotive water pump body, and a test seal water pump. The top of the water pump seal testing and inspection platform body is equipped with multiple clamping drive devices, and the output end of each device has an arc-shaped clamping block. An automotive water pump positioning plate is mounted on the top of the platform body, and the automotive water pump body is mounted on the top of the positioning plate. A first fixing plate is bolted to one end of the platform body, and a first cylinder is installed inside the first fixing plate. The end of the platform body near the first fixing plate is also bolted to the first fixing plate. This technical solution uses a clamping mechanism to fix the inlet position of the automotive water pump body, thereby achieving rapid clamping and positioning.

[0004] However, existing technologies still have significant shortcomings, such as: In the aforementioned devices and existing technologies, the traditional automotive water pump air tightness testing process relies on manual loading and unloading and manual sealing, which is inefficient and subject to subjective judgment errors. At the same time, ordinary sealing interfaces cannot guarantee precise alignment with the pump body's inlet and outlet, and are prone to misjudgment due to uneven pressure. The testing methods mostly use water immersion to observe bubbles or simple air pressure holding, which cannot accurately detect air tightness. Summary of the Invention

[0005] The purpose of this invention is to provide a test bench for automotive water pump seals to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a test bench for automotive water pump seals, comprising a housing and a pump body, the pump body comprising an inlet and an outlet, the housing having a flow line inside, and a test instrument and a moving component located near the back of the housing. The production line includes a conveyor and a turntable, with the turntable located at the center of the conveyor. The testing instrument includes a support plate and an air pump, and a sealing plug and a connecting head are respectively provided on the top and front of the support plate; The movable component includes a movable plate and a push-pull linkage, and a connecting bracket is fixedly connected between the movable plate and the support plate.

[0007] Preferably, the conveyor platform is fitted into the openings on both sides of the housing, and the two are connected to form a whole, so that the movement of the turntable does not affect the conveyor belt on the conveyor platform.

[0008] Preferably, a protective frame is fixed to the top surface of the conveyor, and the protective frame limits the pump body to ensure that the pump body will not deviate during linear transfer.

[0009] Preferably, an arc-shaped baffle is provided at the center of the conveyor, and the turntable is located inside the arc-shaped baffle. The gap between the turntable and the arc-shaped baffle is used as space for the pump body to rotate and transfer.

[0010] Preferably, the turntable has a circumferential array of transfer grooves on its surface, and multiple transfer grooves are aligned sequentially with the transfer channel of the conveyor. A rotating column is connected to the center of the turntable, and the rotating column is connected to the housing.

[0011] Preferably, the connecting ends of the sealing plug and the connecting head are matched with the inlet and outlet of the pump body, and after the support plate is lowered to the detection position, the sealing plug and the connecting head are aligned with the inlet and outlet positions.

[0012] Preferably, an air pump is connected to the top surface of the support plate, the surface of the air pump is provided with support feet, and an air inlet pipe is connected to the air outlet of the air pump, and the air inlet pipe is connected to the connector.

[0013] Preferably, the support plate is arc-shaped, and the sealing head and the connecting head are located on different surfaces of the support plate and can move together with the support plate.

[0014] Preferably, a lead screw and a motor are installed in the rear groove inside the housing, and a moving plate is sleeved on the surface of the lead screw and threadedly connected to its surface.

[0015] Preferably, a channel for the air pump is formed between the two connecting brackets, a cylinder is fixed on the top surface of the connecting bracket, and the two ends of the push-pull connecting rod are respectively connected and fixed to the telescopic end of the cylinder and the surface of the support foot.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Through an integrated and automated structure, the accuracy and efficiency of sealing inspection are optimized. The production line adopts the coordinated operation of conveyor belt and turntable. The conveyor belt realizes the continuous linear transport of the pump body, and the turntable accurately transfers the pump body to the inspection station through intermittent rotation and arc baffle limit to complete the automatic inspection of qualified or unqualified products, forming a complete production line operation, significantly reducing manual intervention. Mechanical constraints ensure the posture stability of the pump body during the transfer process, effectively improving the continuity and positioning accuracy of the inspection process.

[0017] 2. The testing instrument combines pneumatic sealing and air pressure monitoring for detection. A screw mechanism in the moving component drives the sealing head to vertically press against the pump inlet, while a cylinder pushes the connecting head to align with the outlet, creating a sealed testing environment. A constant air pressure is injected using an air pump, and sensors monitor pressure changes in real time, enabling accurate identification of micro-leakage. This non-destructive testing method avoids secondary contamination or damage to components. The combination of automated mechanical alignment and physical differential pressure detection ensures reliable sealing connections while significantly improving the repeatability and reliability of the test results, fully meeting the requirements of high-standard production quality control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of the outer shell in this invention; Figure 2 In this invention Figure 1 Enlarged view of point A; Figure 3 This is an overall structural diagram of the present invention; Figure 4 This is a front view of the present invention; Figure 5 This is a schematic diagram of a cross-section in this invention; Figure 6 This is a schematic diagram of the assembly line structure in this invention; Figure 7 This is a structural diagram of the detection instrument in this invention; Figure 8 This is a structural diagram of the pump body in this invention.

[0019] In the diagram: 1. Shell; 2. Pump body; 21. Inlet; 22. Outlet; 3. Assembly line; 31. Conveyor table; 32. Protective frame; 33. Arc-shaped baffle; 34. Turntable; 35. Transfer trough; 36. Rotating column; 4. Testing instruments; 41. Support plate; 42. Air pump; 43. Support legs; 44. Air inlet pipe; 45. Connector; 46. Sealing plug; 5. Moving components; 51. Lead screw; 52. Motor; 53. Moving plate; 54. Connecting bracket; 55. Cylinder; 56. Push-pull linkage. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-8 The present invention provides a technical solution: Example 1: A sealing test bench for automotive water pumps: including a housing 1 and a pump body 2. The pump body 2 includes an inlet 21 and an outlet 22. The housing 1 has a flow line 3 inside. A testing instrument 4 and a moving component 5 are located near the back of the housing 1. The pump body 2 is the water pump of an automobile. If the mechanical seal, bearing seal, or other critical parts of the water pump leak, it will lead to coolant loss, engine overheating, or even serious damage. Therefore, the water pump needs to be tested for sealing before it leaves the factory. Only qualified water pumps can be packaged and shipped or used. The test bench consists of several main parts, including the housing, the flow line 3, the testing instrument 4, and the moving component 5. The flow line 3 is used to transfer the pump body 2 to be tested, so that it passes through the testing position of the testing instrument 4 and is tested sequentially, forming a streamlined process that greatly reduces manpower.

[0022] The production line 3 includes a conveyor 31 and a turntable 34. The turntable 34 is located at the center of the conveyor 31. The conveyor 31 is fitted into the openings on both sides of the housing 1, and the two are connected to form a whole. The movement of the turntable 34 does not affect the conveyor belt on the conveyor 31. The surface of the turntable 34 has a circumferential array of transfer grooves 35, and multiple transfer grooves 35 are aligned with the conveyor channel of the conveyor 31 in sequence. The production line 3 is mainly composed of the conveyor 31 and the turntable 34. The conveyor belt on the conveyor 31 can transfer the pump body 2 that needs to be tested in a straight line. The transfer grooves 35 on the turntable 34 are aligned with the conveyor belt. After the pump body 2 enters the transfer groove 35, the turntable 34 rotates at a specified angle so that it waits to pass the position of the testing instrument 4. The qualified pump body 2 waits for the turntable 34 to rotate it to the other side of the conveyor belt, so that it is discharged and recycled to the next process. If the unqualified pump body 2 appears, the voice warning will prompt the staff to manually remove and repair it.

[0023] A protective frame 32 is fixed to the top surface of the conveyor 31, and the protective frame 32 limits the pump body 2 to ensure that the pump body 2 will not deviate during linear transfer. An arc-shaped baffle 33 is provided at the center of the conveyor 31, and a turntable 34 is located inside the arc-shaped baffle 33. The gap between the turntable 34 and the arc-shaped baffle 33 provides space for the pump body 2 to rotate and transfer. The protective plate is fixed to the conveyor 31 to ensure that the pump body 2 can pass along the protective frame 32 to avoid deviation. At the same time, as the conveyor belt moves slowly, when placing the pump body 2 on the conveyor 31, simply adjust the pump body 2 to a fixed angle and place it directly on the conveyor belt, waiting... Pump body 2 can enter the transfer groove 35 of turntable 34. Turntable 34 is located on the top surface of the conveyor belt. The movement of the two does not affect each other. The open surface of turntable 34 divides the conveyor table 31 into left and right parts. It is worth noting that an arc-shaped baffle 33 is added to the surface of turntable 34. The main purpose of arc-shaped baffle 33 is to limit the pump body 2 in transfer groove 35. When turntable 34 rotates to transfer pump body 2 in transfer groove 35, the arc-shaped baffle 33 can be used to limit the position of pump body 2, so that pump body 2 moves in an arc with turntable 34 until it passes through the detection instrument 4 and is discharged from the other side of conveyor table 31.

[0024] A rotating column 36 is connected to the center of the turntable 34, and the rotating column 36 is connected to the housing 1. The rotation of the turntable 34 is achieved by the rotating column 36 at the center. The rotating column 36 can be equipped with components such as a motor 52 and a reduction gear. The mechanical motion drives the rotating column 36 to rotate, thereby realizing the rotation of the turntable 34. The assembly line 3 design realizes the fully automated flow of pump body 2 inspection through the coordinated operation of the conveyor belt and the turntable 34. The conveyor belt is responsible for horizontally transporting the pump body 2 to the transfer groove 35 of the turntable 34. The turntable 34 then precisely positions the pump body 2 to the inspection station through intermittent rotation. Its arc-shaped baffle 33 structure continuously constrains the pump body 2 during rotation, effectively preventing deviation or slippage. Finally, qualified and unqualified products are automatically separated and transported. The linear motion and rotational positioning are seamlessly connected to form a continuous closed-loop inspection process, which greatly reduces manual intervention and placement time. At the same time, mechanical limiting and directional transfer ensure the posture stability of the pump body 2 during movement, thereby significantly improving inspection efficiency and positional accuracy. The testing instrument 4 includes a support plate 41 and an air pump 42. The support plate 41 has a sealing plug 46 and a connecting head 45 on its top and front sides, respectively. The connecting ends of the sealing plug 46 and the connecting head 45 are matched with the inlet 21 and outlet 22 of the pump body 2. After the support plate 41 is lowered to the testing position, the sealing plug 46 and the connecting head 45 are aligned with the inlet 21 and outlet 22. The top surface of the support plate 41 is connected to the air pump 42. The testing instrument 4 includes an air pump 42. The sealing plug 46 is used to seal the inlet 21 of the pump body 2 to be tested. The air pump 42 performs air intake treatment inside the pump body 2 and uses the air pressure sensor of the connecting pipe to detect the air pressure inside the pump body 2. After waiting for a specified time, if the air pressure does not change or is within the specified threshold, it is qualified. Similarly, otherwise, it is unqualified.

[0025] Example 2: Based on Embodiment 1, the air pump 42 is provided with support feet 43. An air inlet pipe 44 is connected to the air outlet of the air pump 42, and the air inlet pipe 44 is connected to the connecting head 45. The support plate 41 is arc-shaped, and the sealing head and the connecting head 45 are located on different sides of the support plate 41 and can move together with the support plate 41. The top and front of the support plate 41 are respectively equipped with a sealing plug 46 and a connecting head 45. The sealing plug 46 is aligned with the value of the pump body 2 inlet 21 at the detection position. After the support plate 41 is lowered to the specified position, the inlet 21 can be sealed by using a sealing rubber gasket. Similarly, the position of the connecting head 45 at this time is aligned with the outlet 22. The air pump 42 sends gas from the air inlet pipe 44 into the connecting head. Finally, the gas 45 enters the pump body 2, and the bearing plate 41 drives the sealing plug 46 to descend and tightly fit the pump body 2 inlet 21 to form a sealed cavity. At the same time, the air pump 42 injects constant air pressure into the pump body 2 through the connecting head 45. The internal pressure change is monitored in real time by a high-precision air pressure sensor. If the pressure value is stable within the preset threshold within a specified time, the seal is deemed qualified; otherwise, it is considered a leak. This detection method based on the pressure difference principle can not only accurately identify micron-level leakage defects, but also improve the detection accuracy and reliability through the non-destructive testing method of physical sealing and air pressure monitoring. At the same time, it avoids the residual pollution or secondary damage to the pump body 2 caused by the traditional liquid detection method, which greatly improves the detection efficiency and product qualification rate.

[0026] Specifically, the components in the movable assembly 5, together with the components in the detection instrument 4, can vertically raise and lower the sealing head and connecting head 45 in the detection instrument 4. At the same time, the components in the movable assembly 5 can control the forward and backward movement of the connecting head 45. It is worth noting that the lead screw 51 in the movable assembly 5 can control the vertical raising and lowering of the support plate 41, thereby driving the sealing head, air pump 42, connecting head 45, etc. on the support plate 41 to rise and fall linearly. A motor 52 is added to the lead screw 51 and both are installed in the back groove inside the housing 1. The moving plate 53 cooperates with this groove to form a limiting mechanism to prevent displacement. When the lead screw 51 is driven by the motor 52, the moving plate 53 can drive the support plate 41 to rise and fall until it moves to the specified position. The sealing plug 46 seals the inlet 21, and the connecting head 45 is flush with the outlet 22.

[0027] The movable component 5 includes a movable plate 53 and a push-pull linkage 56. A connecting bracket 54 is fixedly connected between the movable plate 53 and the bearing plate 41. A lead screw 51 and a motor 52 are installed in the groove on the back of the housing 1. The movable plate 53 is sleeved on the surface of the lead screw 51 and threadedly connected to its surface. A channel for the movement of the air pump 42 is formed between the two connecting brackets 54. A cylinder 55 is fixed on the top surface of the connecting bracket 54. The two ends of the push-pull linkage 56 are respectively connected and fixed to the telescopic end of the cylinder 55 and the surface of the support leg 43. The connecting bracket 54 connects the bearing plate 41 and the movable plate 53. The cylinder 55 is located on the connecting bracket 54. The two connecting brackets 54 form a straight channel for the movement of the support leg 43 on the surface of the air pump 42, thereby forming a limiting mechanism. Under the connection of the push-pull linkage 56, the air pump 42 and the air inlet pipe 4 can move. Together with the connecting head 45, the movable component 5 moves back and forth in a straight line to complete the docking of the connecting head 45 with the outlet 22. Specifically, the movable component 5 drives the moving plate 53 and the bearing plate 41 to rise and fall vertically through the precise cooperation of the lead screw 51 and the motor 52, ensuring that the sealing head and the pump body 2 inlet 21 are accurately aligned and sealed. At the same time, the cylinder 55 drives the air pump 42 and the connecting head 45 to move back and forth along the straight limiting channel through the push-pull connecting rod 56 to complete the seamless docking with the outlet 22. By utilizing the synergistic effect of rigid transmission and limiting mechanism, multi-dimensional coordinate precision control of the sealing and connection links is achieved. This not only ensures the reliability of the sealing connection during the detection process, but also significantly improves the detection efficiency and position repeatability accuracy by replacing manual operation with mechanical automation, effectively avoiding the risk of false detection or leakage caused by alignment deviation.

[0028] Working principle: Pump body 2 is the water pump for automobiles. If critical components such as the mechanical seal and bearing seal of the water pump leak, it will lead to coolant loss, engine overheating, or even serious damage. Therefore, the water pump needs to undergo a sealing test before leaving the factory. Only qualified water pumps can be packaged and shipped or used. The testing platform consists of several main parts: the outer shell, the assembly line 3, the testing instruments 4, and the moving parts 5. The assembly line 3 is used to transfer the pump body 2 to be tested, so that it passes through the testing position of the testing instruments 4 and is tested sequentially, forming an assembly line process, which greatly reduces the time required for testing. With less manpower, the production line 3 mainly consists of a conveyor 31 and a turntable 34. The conveyor belt on the conveyor 31 can transfer the pump body 2 that needs to be tested in a straight line. The transfer groove 35 on the turntable 34 is aligned with the conveyor belt. After the pump body 2 enters the transfer groove 35, the turntable 34 rotates at a specified angle so that it waits to pass the position of the testing instrument 4. The qualified pump body 2 waits for the turntable 34 to rotate it to the other side of the conveyor belt, so that it is discharged and recycled to the next process. If the unqualified pump body 2 appears, the voice warning will prompt the staff to manually remove and repair it.

[0029] It is necessary to explain that the protective plate is fixed on the conveyor 31 to ensure that the pump body 2 can pass along the protective frame 32, avoiding the problem of displacement. At the same time, as the conveyor belt moves slowly, when the pump body 2 is placed on the conveyor 31, the pump body 2 is adjusted to a fixed angle and placed directly on the conveyor belt. Wait for the pump body 2 to enter the transfer groove 35 of the turntable 34. The turntable 34 is located on the top surface of the conveyor belt, and the movement of the two does not affect each other. The open surface of the turntable 34 divides the conveyor 31 into left and right parts. It is necessary to explain that an arc-shaped baffle 33 is added to the surface of the turntable 34. The main purpose of the arc-shaped baffle 33 is to limit the pump body 2 in the transfer groove 35. When the turntable 34 rotates to transfer the pump body 2 in the transfer groove 35, the arc-shaped baffle 33 can be used to limit the position of the pump body 2, so that the pump body 2 moves in an arc with the rotation of the turntable 34 until it passes the detection instrument 4 and is discharged from the other side of the conveyor 31.

[0030] The rotation of the turntable 34 is achieved by means of a rotating column 36 at the central position. The rotating column 36 can be equipped with components such as a reduction gear of the motor 52. The mechanical movement drives the rotation of the rotating column 36, thereby realizing the rotational movement of the turntable 34. The design of the assembly line 3 achieves the fully automated transfer of the pump body 2 detection through the coordinated operation of the conveyor belt and the turntable 34. The conveyor belt is responsible for horizontally transporting the pump body 2 into the transfer groove 35 of the turntable 34. The turntable 34 accurately positions the pump body 2 at the detection station through intermittent rotation. Its arc-shaped baffle 33 structure continuously constrains the pump body 2 during the rotation process, effectively preventing deviation or slipping. Finally, the qualified and unqualified products are automatically routed and transported, seamlessly connecting the linear motion and rotational positioning to form a continuous closed-loop detection process, significantly reducing manual intervention and placement time. At the same time, the mechanical limit and directional transfer ensure the attitude stability of the pump body 2 during movement, thus significantly improving the detection efficiency and position accuracy.

[0031] The detection instrument 4 includes an air pump 42. The water inlet 21 of the pump body 2 to be detected is blocked by a sealing plug 46. The air pump 42 conducts air intake treatment on the inside of the pump body 2, and the air pressure inside the pump body 2 is detected by the air pressure sensor of the connecting pipe. If the air pressure does not change or is within the specified threshold after waiting for the specified time, it is qualified; vice versa, it is unqualified. Further, a sealing plug 46 and a connecting head 45 are respectively installed at the top and front of the bearing plate 41. The sealing plug 46 is numerically aligned with the water inlet 21 of the pump body 2 at the detection position. After the bearing plate 41 is lowered to the specified position, the water inlet 21 can be blocked by using a sealing rubber pad. Similarly, the position of the connecting head 45 is aligned with the water outlet 22 at this time. The air pump 42 sends gas from the air inlet pipe 44 into the connecting head 45 and finally into the pump body 2. The bearing plate 41 is used to drive the sealing plug 46 to descend and closely fit the water inlet 21 of the pump body 2 to form a sealed cavity. At the same time, the air pump 42 injects a constant air pressure into the pump body 2 through the connecting head 45. The internal pressure change is monitored in real time by a high-precision air pressure sensor. If the pressure value is stable within the preset threshold within the specified time, the seal is determined to be qualified; otherwise, it is regarded as leaking. This detection method based on the differential pressure principle can not only accurately identify micron-level leakage defects, but also, through the non-destructive detection method of physical plugging and air pressure monitoring, while improving the detection accuracy and reliability, avoids the residual pollution or secondary damage caused to the pump body 2 by the traditional liquid detection method, and greatly improves the detection efficiency and product qualification rate.

[0032] The testing instrument 4, in conjunction with the components in the movable assembly 5, can vertically raise and lower the sealing head and connecting head 45 in the testing instrument 4. At the same time, the components in the movable assembly 5 can control the forward and backward movement of the connecting head 45. It is worth noting that the lead screw 51 in the movable assembly 5 can control the vertical raising and lowering of the support plate 41, thereby driving the sealing head, air pump 42, connecting head 45, etc. on the support plate 41 to rise and fall linearly. A motor 52 is added to the lead screw 51 and both are installed in the back groove inside the housing 1. The moving plate 53 cooperates with this groove to form a limiting mechanism to prevent displacement. When the lead screw 51 is driven by the motor 52, the moving plate 53 can drive the support plate 41 to rise and fall until it moves to the specified position. The sealing plug 46 seals the inlet 21, and the connecting head 45 is flush with the outlet 22.

[0033] The connecting bracket 54 connects the support plate 41 and the moving plate 53. The cylinder 55 is located on the connecting bracket 54. The two connecting brackets 54 form a straight channel for the movement of the support feet 43 on the surface of the air pump 42, thus forming a limiting mechanism. Under the connection of the push-pull linkage 56, the air pump 42, the air inlet pipe 44, and the connecting head 45 can move back and forth linearly together, thereby completing the docking of the connecting head 45 with the outlet 22. Specifically, the movable component 5 drives the moving plate 53 and the support plate 41 to rise and fall vertically through the precise cooperation of the lead screw 51 and the motor 52. The sealing plug and the pump body 2 inlet 21 are precisely aligned and sealed. At the same time, the cylinder 55 drives the air pump 42 and the connecting head 45 to move back and forth along the linear limiting channel through the push-pull connecting rod 56, completing the seamless docking with the outlet 22. By utilizing the synergistic effect of rigid transmission and limiting mechanism, multi-dimensional coordinate precision control of the sealing and connection links is achieved. This not only ensures the reliability of the sealing connection during the detection process, but also significantly improves the detection efficiency and position repeatability accuracy by replacing manual operation with mechanical automation, effectively avoiding the risk of false detection or leakage caused by alignment deviation.

[0034] First, the pump body 2 is conveyed to the turntable 34 station by the conveyor belt. After being limited by the arc-shaped baffle 33, it rotates with the turntable 34 to the detection position, completing automatic feeding and precise positioning. Then, the screw 51 mechanism of the movable component 5 drives the bearing plate 41 to descend, so that the sealing head tightly presses against the water inlet 21 of the pump body 2. At the same time, the cylinder 55 pushes the connecting head 45 to connect with the water outlet 22, forming a seal detection. The air pump 42 injects constant air pressure into the pump. The sensor monitors the pressure data in real time. If the pressure fluctuation exceeds the threshold within the set time, a leak is judged and an alarm is triggered. The unqualified product is removed manually, while the qualified product is rotated with the turntable 34 to the outlet conveyor belt to enter the next process. It integrates the advantages of mechanical conveying, positioning sealing and air pressure detection. It not only minimizes manual intervention and avoids component damage through non-destructive testing, but also ensures the reliability and repeatability of the sealing test with high-precision motion control and real-time monitoring, which greatly improves production efficiency and product quality consistency.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test bench for automotive water pump seals, characterized in that: It includes a housing (1) and a pump body (2), the pump body (2) includes an inlet (21) and an outlet (22), the housing (1) is provided with a water line (3), and a detection instrument (4) and a moving component (5) are provided near the back of the inside of the housing (1). The assembly line (3) includes a conveyor (31) and a turntable (34), the turntable (34) being located at the center of the conveyor (31); The testing instrument (4) includes a support plate (41) and an air pump (42). The support plate (41) is provided with a sealing plug (46) and a connecting head (45) on its top and front sides, respectively. The movable component (5) includes a movable plate (53) and a push-pull linkage (56), and a connecting bracket (54) is fixedly connected between the movable plate (53) and the bearing plate (41).

2. The automotive water pump seal testing bench according to claim 1, characterized in that: The conveyor platform (31) is fitted into the openings on both sides of the housing (1), and the two are connected to form a whole. The movement of the turntable (34) does not affect the conveyor belt on the conveyor platform (31).

3. The automotive water pump seal testing bench according to claim 1, characterized in that: The top surface of the conveyor (31) is fixed with a protective frame (32), and the protective frame (32) limits the pump body (2) to ensure that the pump body (2) will not deviate when it is transferred in a straight line.

4. A test bench for automotive water pump seals according to claim 1, characterized in that: An arc-shaped baffle (33) is provided at the center of the conveyor (31), and a turntable (34) is located inside the arc-shaped baffle (33). The gap between the turntable (34) and the arc-shaped baffle (33) is used as space for the pump body (2) to rotate and transport.

5. A test bench for automotive water pump seals according to claim 1, characterized in that: The turntable (34) has a circumferential array of transfer grooves (35), and multiple transfer grooves (35) are aligned with the transfer channel of the transfer table (31) in sequence. A rotating column (36) is connected to the center of the turntable (34), and the rotating column (36) is connected to the housing (1).

6. A test bench for automotive water pump seals according to claim 1, characterized in that: The connection ends of the sealing plug (46) and the connecting head (45) are both matched with the inlet (21) and outlet (22) of the pump body (2), and after the bearing plate (41) is lowered to the detection position, the sealing plug (46) and the connecting head (45) are aligned with the inlet (21) and outlet (22).

7. A test bench for automotive water pump seals according to claim 1, characterized in that: The top surface of the support plate (41) is connected to an air pump (42), the surface of the air pump (42) is provided with a support foot (43), the air outlet of the air pump (42) is connected to an air inlet pipe (44), and the air inlet pipe (44) is connected to the connector (45).

8. A test bench for automotive water pump seals according to claim 1, characterized in that: The support plate (41) is arc-shaped, and the sealing head and the connecting head (45) are located on different surfaces of the support plate (41) and can move together with the support plate (41).

9. A test bench for automotive water pump seals according to claim 1, characterized in that: A lead screw (51) and a motor (52) are installed in the back groove inside the housing (1), and a moving plate (53) is sleeved on the surface of the lead screw (51) and threadedly connected to its surface.

10. A test bench for automotive water pump seals according to claim 1, characterized in that: A channel for the air pump (42) to move is formed between the two connecting brackets (54). A cylinder (55) is fixed on the top surface of the connecting bracket (54), and the two ends of the push-pull connecting rod (56) are respectively connected and fixed to the telescopic end of the cylinder (55) and the surface of the support leg (43).

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