Water tank leak detection device of automobile warm water heater

Abstract

The utility model relates to the field of automobile part performance testing, and discloses a water tank leak detection device of an automobile warm water heater, which comprises a rack, a detection table and a vertical pressing assembly which are arranged on the rack, a tool bottom plate arranged on the detection table, a profiling body arranged on the tool bottom plate, and a side blocking mechanism arranged on the detection table, the side blocking mechanism comprises a vertical plate, a first plug and a second plug which are arranged on the vertical plate, and a lateral driving assembly; a first air channel and a second air channel which are communicated with each other are formed in the tool bottom plate; the profiling body is provided with a third air channel communicated with the first air channel and the second air channel, the third air channel is communicated with an inner cavity of the water tank, the first air channel is connected with an air supply mechanism, and the second air channel is connected with an air pressure detection mechanism; the vertical pressing assembly is used for pressing the water tank located below the vertical pressing assembly. All the components work cooperatively in an air supply pressure measuring mode, air tightness detection can be rapidly and effectively carried out on the water tank, and the leakage problem of the water tank can be found in time.

Description

Technical Field

[0001] The utility model relates to the field of automobile component performance testing, in particular to a water tank leakage detection device for an automobile warm water heater. Background Art

[0002] The water tank of a car's warm water heater acts as a buffer and regulates water temperature. The water heating process may not be continuous and stable, and heating power may fluctuate. The large amount of hot water stored in the tank can mitigate these temperature fluctuations to a certain extent. If the water temperature rises too quickly due to excessive heating, the cooler water in the tank can mix with it and cool it down. If the water temperature drops due to insufficient heating, the relatively warm water in the tank can replenish the heat, thus maintaining a relatively stable water temperature for heating or other purposes. This creates a comfortable temperature environment in the vehicle and prevents discomfort to the driver and passengers caused by fluctuating water temperatures.

[0003] The water tank of the car warm water heater is mainly cast by die casting. Figure 5 As shown, the bottom of the water tank forms an open inner cavity 73 structure and the side of the water tank is provided with a water inlet 71 and a water outlet 72. In order to ensure that there are no manufacturing defects and that all products supplied to the outside are good products, it is also necessary to develop a set of leak detection devices for the water tank to perform air tightness detection on the inner cavity of the completed casting water tank. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a water tank leak detection device for an automobile warm water heater, which is intended to detect the air tightness of the water tank.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A water tank leak detection device for an automobile hot water heater comprises a frame, a detection platform and a vertical pressing assembly arranged on the frame, a tooling base plate arranged on the detection base plate, a contoured body arranged on the tooling base plate and adapted to the shape of the water tank, and a side blocking mechanism arranged on the detection base plate; the side blocking mechanism comprises a vertical plate, a first plug and a second plug arranged on the vertical plate, and a lateral drive assembly, the lateral drive assembly is used to drive the vertical plate to move toward the water tank so that the first plug and the second plug block the water inlet and the water outlet of the water tank; a first air duct and a second air duct that are interconnected are provided on the tooling base plate; a third air duct that is connected to the first air duct and the second air duct is provided on the contoured body, the third air duct is connected to the inner cavity of the water tank, the first air duct is connected to the air supply mechanism, and the second air duct is connected to the air pressure detection mechanism; the vertical pressing assembly is used to press the water tank located therebelow.

[0007] As a further improvement of the above technical solution, the lateral drive assembly includes a support, a first cylinder arranged on the support, and a piston rod of the first cylinder extending in the transverse direction and drivingly connected to the vertical plate.

[0008] As a further improvement of the above technical solution, the lateral drive assembly further includes a sliding sleeve arranged on the support, a guide rod slidably connected to the sliding sleeve, and one end of the guide rod is fixedly connected to the vertical plate.

[0009] As a further improvement of the above technical solution, a sealing ring is provided on the contoured body to form a seal at the junction of the water tank edge and the contoured body.

[0010] As a further improvement of the above technical solution, the contoured body is provided with a positioning pin and a positioning block for positioning the water tank.

[0011] As a further improvement of the above technical solution, an avoidance hole for avoiding the pin shaft on the water tank is opened on the contoured body.

[0012] As a further improvement of the above technical solution, the vertical pressing assembly includes a second driving cylinder facing vertically downward, a top plate connected to the output end of the second driving cylinder, and a plurality of pressing members arranged at the bottom of the top plate.

[0013] As a further improvement of the above technical solution, the clamping member includes a guide sleeve, a spring and a pressure rod. The guide sleeve is arranged on the lower surface of the movable plate, the upper part of the pressure rod is slidably arranged inside the guide sleeve, the middle part of the pressure rod is provided with an abutment portion, the spring is sleeved on the pressure rod, the lower end of the spring abuts against the abutment portion, and the upper end of the spring abuts against the lower end of the guide sleeve, and the bottom end of the pressure rod is used to press the top of the water tank.

[0014] As a further improvement of the above technical solution, the detection table is provided with a through-beam sensor for detecting whether the workpiece is placed correctly, and the detection table is provided with a proximity sensor for detecting whether a process hole is opened on the water tank.

[0015] As a further improvement of the above technical solution, a qualified marking gun is provided on the testing table.

[0016] Beneficial effects: The water tank leak detection device provided by the utility model is designed with a contoured body and a side blocking mechanism based on the characteristics of the open inner cavity structure at the bottom of the water tank of the automobile warm water heater and the water inlet and outlet arranged on the side. The contoured body and the vertical compression assembly are used to position and seal the water tank. The first and second blocking heads of the side blocking mechanism can accurately block the water inlet and outlet, so that the water tank forms a sealed leak detection environment. The various components work together to supply air and pressure measurement, which can quickly and effectively perform air tightness detection on the water tank. By timely discovering the leakage problem of the water tank, it can be ensured that only good products are supplied to the outside, thereby improving product quality and preventing defective water tanks from entering the market, thereby improving the overall performance and reliability of the automobile warm water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The three-dimensional water tank leakage detection device provided by the utility model Figure 1 .

[0018] Figure 2 The three-dimensional water tank leakage detection device provided by the utility model Figure 2 .

[0019] Figure 3 The three-dimensional water tank leakage detection device provided by the utility model Figure 3 .

[0020] Figure 4 It is a structural diagram of the side blocking mechanism blocking the water tank.

[0021] Figure 5 This is a three-dimensional diagram of the water tank.

[0022] Explanation of the main component symbols: 1-testing table, 2-vertical clamping assembly, 21-top plate, 22-clamping part, 221-guide sleeve, 222-spring, 223-pressure rod, 4-tooling bottom plate, 41-first air channel, 42-second air channel, 51-profiled body, 52-sealing ring, 510-third air channel, 53-locating pin, 54-locating block, 55-avoidance hole, 6-side blocking mechanism, 61-vertical plate, 62-first plug, 63-second plug, 64-support, 65-first cylinder, 66-sleeve, 67-guide rod, 7-water tank, 71-water inlet, 72-water outlet, 73-inner cavity, 81-counter-shooting sensor, 82-proximity sensor, 9-qualified marking gun. DETAILED DESCRIPTION

[0023] The present invention provides a leak detection device for a water tank 7 of an automobile water heater. To make the purpose, technical solution, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only intended to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0024] See also Figures 1-4 The utility model provides a leak detection device for the water tank 7 of an automobile hot water heater, comprising a frame, a detection platform 1 and a vertical pressing assembly 2 arranged on the frame, a tooling base 4 arranged on the detection platform 1, and a contoured body 51 arranged on the tooling base 4 and adapted to the shape of the water tank 7, and a side blocking mechanism 6 arranged on the detection platform 1; the side blocking mechanism 6 comprises a vertical plate 61, a first plug 62 and a second plug 63 arranged on the vertical plate 61, and a lateral drive assembly, the lateral drive assembly being used to drive the vertical plate 61 toward the direction of the water tank 7 Move so that the first plug 62 and the second plug 63 block the water inlet 71 and the water outlet 72 of the water tank 7; the tooling base plate 4 is provided with a first air channel 41 and a second air channel 42 that are interconnected; the contoured body 51 is provided with a third air channel 510 that is connected to the first air channel 41 and the second air channel 42, and the third air channel 510 is connected to the inner cavity 73 of the water tank 7, the first air channel 41 is connected to the air supply mechanism, and the second air channel 42 is connected to the air pressure detection mechanism; the vertical clamping assembly 2 is used to clamp the water tank 7 located therebelow.

[0025] During testing, the water tank 7 of the automotive water heater to be tested is placed on the contoured body 51 on the tooling base 4 on the testing table 1. Because the contoured body 51 matches the shape of the water tank 7, the water tank 7 can be placed relatively accurately in the predetermined position, providing basic positioning for subsequent testing operations. The vertical clamping assembly 2 compresses the water tank 7 below it. This action not only tightens the fit between the water tank 7 and the contoured body 51, preventing gas leakage from the connection between the two bodies, which could affect the accuracy of the test results, but also helps maintain the stability of the water tank 7 during the testing process, ensuring a smooth and complete test. The lateral drive assembly then operates, driving the vertical plate 61 toward the water tank 7. As the vertical plate 61 moves, the first plug 62 and the second plug 63 on the vertical plate 61 accurately seal the water inlet 71 and outlet 72 of the water tank 7, respectively, ensuring a relatively closed space within the water tank 7 for airtightness testing. The air supply mechanism delivers gas to the first air channel 41 , and the gas passes through the interconnected first air channel 41 , the second air channel 42 and the third air channel 510 on the contoured body 51 in sequence, and finally enters the inner cavity 73 of the water tank 7 ; at this time, the air pressure detection mechanism monitors the air pressure changes in the second air channel 42 in real time, thereby judging the air tightness of the water tank 7 .

[0026] The leak detection device for the water tank 7 of an automobile warm water heater provided by the present invention is designed with a contoured body 51 and a side blocking mechanism 6 in view of the characteristics of the water tank 7 of the automobile warm water heater, which has an open inner cavity 73 at the bottom and a water inlet 71 and a water outlet 72 on the side. The contoured body 51 and the vertical compression assembly 2 are used to position and seal the water tank 7. The first plug 62 and the second plug 63 of the side blocking mechanism 6 can accurately block the water inlet 71 and the water outlet 72, creating a sealed leak detection environment for the water tank 7. The various components work together to provide air pressure measurement, enabling rapid and effective air tightness testing of the water tank 7. By promptly detecting leaks in the water tank 7, it is possible to ensure that only good products are supplied to the outside world, thereby improving product quality and preventing defective water tanks 7 from entering the market, thereby enhancing the overall performance and reliability of the automobile warm water heater.

[0027] Specifically, the lateral drive assembly includes a support 64, a first cylinder 65 disposed on the support 64, and a piston rod of the first cylinder 65 extending laterally and drivingly connected to the riser 61. The first cylinder 65 drives the first plug 62 and the second plug 63 on the riser 61 to accurately move to the water inlet 71 and the water outlet 72 of the water tank 7 and seal them. The first cylinder 65 can provide a stable output force, ensuring that the riser 61 remains stable during movement and when in contact with the water tank 7 for sealing. This ensures a good seal between the plugs and the inlet and outlet of the water tank 7, preventing gas leakage due to insufficient pressure during the detection process, which could affect the accuracy of the detection results.

[0028] Furthermore, the lateral drive assembly also includes a sleeve 66 arranged on the support 64, and a guide rod 67 slidably connected to the sleeve 66. One end of the guide rod 67 is fixed to the vertical plate 61. The cooperation between the guide rod 67 and the sleeve 66 can provide precise linear guidance for the movement of the vertical plate 61. The guide rod 67 shares part of the lateral force and torque borne by the cylinder, reducing the uneven force and wear of the piston rod of the first cylinder 65.

[0029] Furthermore, the contoured body 51 is provided with a sealing ring 52, which forms a seal at the junction of the water tank perimeter and the contoured body 51. When the water tank 7 is placed on the contoured body 51, it fits snugly into the gap between the bottom of the water tank 7 and the tooling base 4. When the air supply mechanism supplies air to the inner cavity 73 of the water tank 7 for airtightness testing, the sealing ring 52 effectively prevents air from leaking from the connection between the bottom of the water tank 7 and the tooling base 4, ensuring that air is concentrated within the inner cavity 73 of the water tank 7 during testing, thereby improving the accuracy of air pressure testing.

[0030] To provide a clear positioning point and orientation for the water tank 7 on the tooling base 4, the contoured body 51 is provided with positioning pins 53 and blocks 54 for positioning the water tank 7. When placing the water tank 7, the operator simply aligns the corresponding positioning holes on the water tank 7 with the positioning pins 53 and aligns the surrounding edges of the water tank 7 with the positioning blocks 54. This allows the water tank 7 to be quickly and accurately placed in the correct position for securing with the vertical clamping assembly 2. This significantly shortens the placement time of the water tank 7 and improves the efficiency of the inspection operation. Especially during batch inspection, it significantly reduces the time wasted on adjustments due to inaccurate placement.

[0031] In fact, the water tank 7 will be press-fitted with a pin before the air tightness test. In order to avoid the pin from interfering with the contoured body 51 when the water tank 7 is placed on the contoured body 51, an avoidance hole 55 is opened on the contoured body 51 for avoiding the pin on the water tank 7.

[0032] Specifically, the vertical clamping assembly 2 includes a second driving cylinder (not shown) pointing vertically downward, a top plate 21 connected to the output end of the second driving cylinder, and a plurality of clamping members 22 arranged at the bottom of the top plate 21. The output end of the second driving cylinder pushes the top plate 21 downward, thereby driving the plurality of clamping members 22 at the bottom of the top plate 21 to apply downward pressure to the water tank 7, ensuring that the water tank 7 fits tightly with the contoured body 51 on the tooling base 4 to form a good sealing effect. A plurality of clamping members 22 (six in this embodiment) are arranged at the bottom of the top plate 21, and these clamping members 22 can compress the water tank 7 at different positions. Compared with the single-point clamping method, multi-point clamping can distribute the pressure more evenly, so that the water tank 7 can be in close contact with the contoured body 51 at all locations.

[0033] For further information, see Figure 2As shown, the pressing member 22 includes a guide sleeve 221, a spring 222, and a pressure rod 223. The guide sleeve 221 is provided on the lower surface of the movable plate. The upper portion of the pressure rod 223 is slidably disposed inside the guide sleeve 221. The middle portion of the pressure rod 223 is provided with an abutment portion. The spring 222 is sleeved on the pressure rod 223. The lower end of the spring 222 abuts against the abutment portion, and the upper end of the spring 222 abuts against the lower end of the guide sleeve 221. The bottom end of the pressure rod 223 is used to press the top of the water tank 7. In the initial state (i.e., when the water tank 7 is not being pressed), the spring 222 is in a naturally extended state, the upper portion of the pressure rod 223 is located inside the guide sleeve 221, and its bottom end is a certain distance away from the top of the water tank 7. When the second driving cylinder is started and pushes the top plate 21 downward, the top plate 21 drives the guide sleeve 221 and the pressure rod 223 connected thereto to move downward together. As the pressure rod 223 gradually approaches the top of the water tank 7, the bottom end of the pressure rod 223 first contacts the top of the water tank 7, and the continued downward pressure causes the pressure rod 223 to slide upward relative to the guide sleeve 221. At this time, the abutment part in the middle of the pressure rod 223 compresses the spring 222, and the spring 222 generates a reverse elastic force during the compression process. This elastic force acts on the top of the water tank 7 through the pressure rod 223, so that the pressure of the pressure rod 223 on the water tank 7 has both the initial pressure from the cylinder push and the elastic pressure of the spring 222. When a certain degree of compression is reached, the second driving cylinder stops moving. At this time, the pressure rod 223 stably presses the top of the water tank 7 under the combined action of the elastic force of the spring 222 and the thrust of the cylinder. The existence of the spring 222 can play the role of buffering and adaptive adjustment. If there is unevenness or height difference on the top of the water tank 7, the spring 222 can adapt to this situation through its own compression deformation, ensuring that each pressure rod 223 can apply pressure to the water tank 7 evenly, thereby achieving a good seal between the water tank 7 and the contoured body 51, creating stable conditions for airtightness testing.

[0034] Preferably, the inspection platform 1 is provided with a through-beam sensor 81 for detecting whether the workpiece is properly placed. Through the detection of the through-beam sensor 81, problems with the placement of the water tank 7 can be promptly discovered and adjusted, thereby ensuring that the entire inspection process is carried out in the correct position, thereby improving the accuracy and reliability of the airtightness inspection. In addition, the inspection platform 1 is provided with a proximity sensor 82 for detecting whether a process hole is opened on the water tank 7. For the quality control of the water tank 7 during the production process, whether the opening of the process hole meets the requirements is also an important inspection item. The detection function of the proximity sensor 82 helps to promptly discover problems with the process hole, preventing the water tank 7 with a defective process hole from entering the subsequent production link or the market, thereby improving the overall quality and reliability of the product.

[0035] Preferably, the testing table 1 is provided with a qualified marking gun 9. After the air tightness test is performed on the water tank 7 of the automobile warm water heater, once the water tank 7 is determined to be qualified, the qualified marking gun 9 automatically performs a marking operation on the water tank 7. This rapid marking method can clearly distinguish qualified products from untested or unqualified products, facilitating subsequent production process management.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the present invention.

Claims

1. A water tank leak detection device for a car hot water heater, characterized in that: The machine comprises a frame, a detection platform and a vertical pressing assembly arranged on the frame, a tooling base plate arranged on the detection platform, a contoured body arranged on the tooling base plate and adapted to the shape of the water tank, and a side blocking mechanism arranged on the detection platform; the side blocking mechanism comprises a vertical plate, a first plug and a second plug arranged on the vertical plate, and a lateral drive assembly, the lateral drive assembly is used to drive the vertical plate to move toward the water tank so that the first plug and the second plug block the water inlet and the water outlet of the water tank; a first air channel and a second air channel that are interconnected are formed on the tooling base plate; a third air channel that is connected to the first air channel and the second air channel is formed on the contoured body, the third air channel is connected to the inner cavity of the water tank, the first air channel is connected to the air supply mechanism, and the second air channel is connected to the air pressure detection mechanism; The vertical pressing assembly is used to press the water tank located below it.

2. The water tank leak detection device for a car hot water heater according to claim 1, characterized in that: The lateral driving assembly includes a support, a first cylinder arranged on the support, and a piston rod of the first cylinder extending in a transverse direction and drivingly connected to the vertical plate.

3. The water tank leak detection device for a car hot water heater according to claim 2, characterized in that: The lateral drive assembly further comprises a sliding sleeve arranged on the support, a guide rod slidably connected to the sliding sleeve, and one end of the guide rod is fixedly connected to the vertical plate.

4. The water tank leak detection device for an automobile hot water heater according to claim 1, characterized in that: The contoured body is provided with a sealing ring which forms a seal at the junction of the water tank surrounding edge and the contoured body.

5. The water tank leak detection device for a car hot water heater according to claim 1, characterized in that: The contoured body is provided with a positioning pin and a positioning block for positioning the water tank.

6. The water tank leak detection device for a car hot water heater according to claim 1, characterized in that: The contoured body is provided with an avoidance hole for avoiding a pin shaft on the water tank.

7. The water tank leak detection device for an automobile hot water heater according to claim 1, characterized in that: The vertical pressing assembly includes a second driving cylinder facing vertically downward, a top plate connected to the output end of the second driving cylinder, and a plurality of pressing members arranged at the bottom of the top plate.

8. The water tank leak detection device for an automobile hot water heater according to claim 7, characterized in that: The pressing member includes a guide sleeve, a spring and a pressure rod. The guide sleeve is arranged on the lower surface of the movable plate. The upper part of the pressure rod is slidably arranged inside the guide sleeve. The middle part of the pressure rod is provided with an abutment portion. The spring is sleeved on the pressure rod. The lower end of the spring abuts against the abutment portion, and the upper end of the spring abuts against the lower end of the guide sleeve. The bottom end of the pressure rod is used to press the top of the water tank.

9. The water tank leak detection device for an automobile hot water heater according to claim 1, characterized in that: The detection table is provided with a through-beam sensor for detecting whether the workpiece is placed correctly, and the detection table is provided with a proximity sensor for detecting whether a process hole is opened on the water tank.

10. The water tank leak detection device for an automobile hot water heater according to claim 1, characterized in that: A qualified marking gun is provided on the testing table.

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