Combination valve airtightness detection mechanism
By eliminating the gap between the combination valve and the mounting fixture using a pressure device before airtightness testing, the problem of insufficient accuracy in detecting minute leaks in combination valves of new energy vehicles is solved, achieving more efficient and reliable airtightness testing.
Patent Information
- Application Number
- CN202423250504.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing technologies are insufficient to effectively detect minute leaks in the combination valves of new energy vehicles, leading to safety hazards, and traditional testing equipment lacks accuracy.
By combining the pressing device with the airtightness testing device, the gap between the product under test and the mounting fixture is eliminated, thereby improving the accuracy and reliability of the test.
It effectively reduces minute leaks during the airtightness testing process, improves testing accuracy and reliability, and ensures the safety of new energy vehicles.
Smart Images
Figure CN223637029U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to detection equipment technical field especially relates to a combination valve air tightness detection mechanism. BACKGROUND
[0002] At present, compared with traditional fuel vehicles, new energy vehicles usually use hydrogen or batteries as energy. Since the molecules of hydrogen are much smaller than fuel, the leakage problem is more prominent, and it is concealed and highly explosive. Therefore, the air tightness detection equipment must be able to detect small leaks and ensure the safety of the vehicle. However, the current small leakage detection technology still has limitations, and it is difficult to completely meet the needs of new energy vehicles for small leakage detection. SUMMARY
[0003] The utility model provides a combination valve air tightness detection mechanism, through the cooperation of the pressing device and the air tightness detection device, before the air tightness detection of the product to be measured, drive the pressing device to press the product to be measured installed in the first installation fixture, eliminate the gap between the first installation fixture and the product to be measured, thereby improving the accuracy and reliability of the air tightness detection.
[0004] According to an aspect of an embodiment of the utility model, a combination valve air tightness detection mechanism is provided, which comprises a rack, an upper feeding module, a movable feeding module and at least one test module are arranged on the rack, the movable feeding module is arranged between the upper feeding module and the test module. The test module comprises a first power driving device, an air tightness detection device and a first mounting rack, the first mounting rack is installed on the table top of the rack, the first power driving device is slidingly installed on the first mounting rack, the first power driving device is connected with a pressing device, the air tightness detection device is installed on the first mounting rack, and the air tightness detection device is arranged opposite to the pressing device.
[0005] In a further technical solution, the air tightness detection device comprises a first installation fixture, a plurality of connecting pipes and a gas pressure generating device, the first installation fixture is provided with at least one first connecting hole and at least one second connecting hole, the plurality of connecting pipes comprise at least one first connecting pipe and at least one second connecting pipe, the first connecting hole is connected with the gas pressure generating device through the first connecting pipe, and the second connecting hole is connected with the gas pressure generating device through the second connecting pipe.
[0006] In a further technical solution, the movable feeding module comprises a second power driving device and a second mounting rack, a first rotary driving device is arranged between the second mounting rack and the rack, the first rotary driving device is used for driving the second mounting rack to rotate, and the second power driving device is connected with a first material taking device.
[0007] In a further technical solution, the first material taking device is a material taking gripper.
[0008] In a further technical solution, the application further comprises a discharging module, the discharging module comprises a moving discharging device and a conveying module, the moving discharging device is arranged between the conveying module and the testing module, and the moving discharging device is arranged opposite to the moving feeding module.
[0009] In a further technical solution, the moving discharging device comprises a third power driving device and a third mounting rack, a second rotary driving device is arranged between the third mounting rack and the rack, the second rotary driving device is used for driving the third mounting rack to rotate, and the third power driving device is connected with a second material taking device.
[0010] In a further technical solution, the second material taking device is a material taking gripper.
[0011] In a further technical solution, the second material taking device is mounted on the third power driving device through a third rotary driving device, and the third rotary driving device is used for driving the second material taking device to rotate.
[0012] In a further technical solution, the conveying module comprises a conveying belt and a marking device, and the marking device is mounted on the rack through a fourth mounting rack.
[0013] In a further technical solution, the feeding module comprises a loading jig and a loading table, the loading jig is mounted on the loading table, the loading table is arranged on the rack, and a first sensor is arranged on a contact surface of the loading jig and the product to be tested.
[0014] Compared with the prior art, the application has the beneficial effects that:
[0015] The application cooperates the pressing device with the air tightness detection device, drives the pressing device to press the product to be tested mounted in the first mounting jig before air tightness detection of the product to be tested, eliminates the gap between the first mounting jig and the product to be tested due to improper installation or inability to closely adhere, reduces the problem of slight leakage in the air tightness detection process, and thus improves the accuracy and reliability of air tightness detection. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a schematic diagram of the overall structure of the application;
[0017] Figure 2 is a partial top view of the application;
[0018] Figure 3 is a schematic diagram of the testing module structure of the application;
[0019] Figure 4 is the structure schematic diagram of the feeding module, the moving feeding module and the testing module of the utility model;
[0020] Figure 5 is the partial structure schematic diagram of the discharging module of the utility model;
[0021] Figure 6 is the structure schematic diagram of the moving discharging device of the utility model.
[0022] The marks of the components in the drawings are as follows:
[0023] 1, the rack;
[0024] 2, the feeding module; 21, the loading fixture; 22, the loading table;
[0025] 3, the testing module; 31, the first power driving device; 32, the first mounting fixture; 33, the first mounting frame; 34, the pressing device;
[0026] 4, the moving feeding module; 41, the second power driving device; 42, the second mounting frame; 43, the first rotary driving device; 44, the first material taking device;
[0027] 5, the discharging module; 51, the third power driving device; 52, the third mounting frame; 53, the second material taking device; 54, the second rotary driving device; 55, the third rotary driving device; 56, the conveying module; 561, the conveying belt; 562, the marking device; 563, the fourth mounting frame. DETAILED DESCRIPTION
[0028] In order to make the above purpose, features and advantages of the utility model more apparent, easy to understand, the specific implementation of the utility model is explained in detail below in combination with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the utility model. But the utility model can be implemented in many other ways different from the description, and the person skilled in the art can make similar improvements without violating the connotation of the utility model, therefore the utility model is not limited by the following disclosed specific embodiments.
[0029] Please refer to Figure 1 And Figure 2This utility model embodiment proposes a combined valve airtightness testing mechanism, including a frame 1. The frame 1 is equipped with a feeding module 2, a moving feeding module 4, and at least one testing module 3. The moving feeding module 4 is positioned between the feeding module 2 and the testing module 3. The testing module 3 includes a first power drive device 31, an airtightness testing device, and a first mounting frame 33. The first mounting frame 33 is mounted on the platform of the frame 1. The first power drive device 31 is slidably mounted on the first mounting frame 33 and connected to a pressing device 34. The airtightness testing device is mounted on the first mounting frame 33, and the airtightness testing device and the pressing device 34 are positioned opposite each other.
[0030] In an exemplary embodiment, the first power drive device 31 drives the pressing device 34 to move up and down along the first mounting frame 33. The first mounting frame 33 is vertically mounted on the table of the frame 1. When the product to be tested is placed in place by the moving feeding module 4, the first power drive device 31 drives the pressing device 34 to move toward the product to be tested until it is pressed tightly, eliminating the gap between the product to be tested and the air tightness testing device, avoiding air leakage during the air tightness testing process, reducing minor leakage problems during the air tightness testing process, and improving the accuracy and reliability of the air tightness testing.
[0031] Furthermore, in possible embodiments, the first power drive device 31 is a power device such as a ball screw, a motor, or a hydraulic motor. This application does not specifically limit the first power drive device 31, as long as the first power drive device 31 can drive the pressing device 34 to move up and down along the first mounting bracket 33.
[0032] It should be noted that, in cases such as Figure 2 In the exemplary embodiment shown, two test modules 3 are provided on the rack 1 to improve the detection efficiency of the airtightness of the product under test. The number of test modules 3 can be adjusted adaptively according to the needs of the detection quantity of the product under test. This utility model does not make a specific limitation on the number of test modules 3.
[0033] The airtightness testing device includes a first mounting fixture 32, a plurality of connecting pipes, and a pressure generating device. The first mounting fixture 32 is provided with at least one first connecting hole and at least one second connecting hole. The plurality of connecting pipes include at least one first connecting pipe and at least one second connecting pipe. The first connecting hole is connected to the pressure generating device through the first connecting pipe, and the second connecting hole is connected to the pressure generating device through the second connecting pipe.
[0034] In an exemplary embodiment, such as Figure 3As shown, the first mounting fixture 32 has at least two connection holes on its side wall, including a first connection hole and a second connection hole. The first connecting pipe is installed in the first connection hole, and the second connecting pipe is installed in the second connection hole, so that the first connecting pipe and the second connecting pipe communicate with the cavity of the first mounting fixture. The other ends of the first connecting pipe and the second connecting pipe are connected to the gas pressure generating device. The gas pressure generating device delivers gas to the first mounting fixture and fills the cavity of the product to be tested with gas at a certain pressure, usually air or other safe and pollution-free gas, to establish an initial gas pressure environment in the cavity of the first mounting fixture.
[0035] The aforementioned airtightness testing device also includes a pressure sensor for detecting the pressure value within the first mounting fixture 32. Once the set pressure value is reached, the gas supply is disconnected, allowing the pressure within the cavity to stabilize for a period of time. This ensures that the gas is fully distributed within the cavity and reaches a stable pressure state. The pressure sensor detects the pressure drop within the cavity of the first mounting fixture 32. After the pressure stabilization phase, monitoring of the gas pressure changes within the cavity of the first mounting fixture 32 begins. If a leak exists in the cavity, the pressure will gradually decrease. Based on a set threshold, it is determined whether the pressure drop exceeds the allowable range. If the pressure drop exceeds the set threshold, the product is considered to have a leak and does not meet the airtightness requirements; otherwise, the product is considered to have good airtightness. The airtightness testing process is rigorous and precise to ensure that the sealing performance of the product under test meets the standards.
[0036] The mobile feeding module 4 includes a second power drive device 41 and a second mounting frame 42. A first rotary drive device 43 is provided between the second mounting frame 42 and the frame 1. The first rotary drive device 43 is used to drive the second mounting frame 42 to rotate. The second power drive device 41 is connected to a first picking device 44.
[0037] like Figure 4 As shown, in an exemplary embodiment, the second power drive device 41 drives the first picking device 44 to move up and down along the second mounting frame 42, and the first rotation drive device 43 controls the second mounting frame 42 to rotate, thereby driving the first picking device 44 to rotate, ensuring that the first picking device 44 realizes the action of transferring the product to be tested from the feeding module 2 to the first mounting fixture 32, improving the working efficiency of the moving feeding module 4, reducing the mechanical structure of the equipment, and reducing manufacturing costs.
[0038] Further, in a possible embodiment, the second power driving device 41 is a ball screw, a motor, a hydraulic motor or the like, and the application does not specifically limit the second power driving device 41, which can drive the first material taking device 44 to move up and down along the second mounting frame 42.
[0039] In another possible embodiment, the first rotating driving device 43 is a worm gear transmission structure, a motor, a hydraulic motor or the like, and the application does not specifically limit the first rotating driving device 43, which can drive the second mounting frame 42 to rotate.
[0040] It should be noted that, as shown in Figure 2 , the rack is provided with two test modules 3, and the rotation angle of the second mounting frame 42 is designed according to the number of test modules 3, that is, the second mounting frame 42 is driven by the first rotating driving device 43 to rotate 360° to meet the feeding requirements of two test modules.
[0041] The first material taking device 44 is a material taking gripper. It should be noted that, as an optional solution, the first material taking device 44 is a gripper to achieve clamping of the products to be measured. In a possible implementation, the first material taking device 44 is a vacuum chuck, which can achieve suction of the products to be measured, reduce product damage caused by clamping operation, improve measurement accuracy and reduce product loss during measurement.
[0042] It also includes a discharging module 5, which includes a moving discharging device and a conveying module 56. The moving discharging device is arranged between the conveying module 56 and the test module 3, and is arranged opposite to the moving feeding module.
[0043] As shown in Figure 2 , Figure 5 and Figure 6 , in the exemplary embodiments, the moving discharging device is arranged opposite to the moving feeding module 4, which facilitates the moving discharging device to take out the products in the first mounting jig 32 after detection and place them into the conveying module 56. The installation space of the rack 1 is reasonably arranged to improve the space utilization and working efficiency of the combined valve air tightness detection mechanism and reduce the floor area.
[0044] The moving discharging device includes a third power driving device 51 and a third mounting frame 52. The third mounting frame 52 is provided with a second rotating driving device 54 between the third mounting frame 52 and the rack 1, which is used to drive the third mounting frame 52 to rotate. The third power driving device 51 is connected with a second material taking device 53.
[0045] In the example embodiment, as shown in Figure 2 and Figure 6 the second rotating driving device 54 controls the rotation of the third mounting frame 52, thereby driving the second material taking device 53 to rotate. When the air tightness detection result meets the standard, the second material taking device 53 removes the products that have been detected and are qualified from the test module 3 to the conveying module 56; when the air tightness detection result does not meet the standard, the second material taking device 53 puts the products that have been detected and are unqualified into the unqualified product box, thereby improving the working efficiency of the combined valve air tightness detection mechanism.
[0046] It should be noted that, in the example embodiment as shown in Figure 2 , the rack 1 is provided with two test modules 3, and the rotation angle of the third mounting frame 52 is designed according to the number of the test modules 3, that is, the third mounting frame 52 is driven by the second rotating driving device 54 to rotate 360°, so as to meet the discharging requirement of the two test modules 3.
[0047] The second material taking device 53 is a material taking gripper. In the example embodiment, the second material taking device 53 is a material taking gripper. It should be noted that, as shown in Figure 6 , as an optional solution, the second material taking device 53 is a gripper, so as to realize the clamping of the products to be detected. In a possible implementation, the second material taking device 53 is a vacuum chuck, which can realize the clamping of the products to be detected, reduce the damage caused by the clamping operation on the products to be detected, improve the measurement accuracy, and reduce the product loss in the measurement process.
[0048] The second material taking device 53 is installed on the third power driving device 51 through the third rotating driving device 55, and the third rotating driving device 55 is used to drive the second material taking device 53 to rotate.
[0049] In the example embodiment, before the second material taking device 53 places the qualified products into the conveying module 56, the second material taking device 53 rotates the products under the action of the third rotating driving device 55, so that the side wall of the product is located below the marking device 562 in the conveying module 56 for marking. The marking is performed before the conveying of the products, which reduces the subsequent step of re-clamping and positioning the products after the conveying, simplifies the overall operation process, and improves the working efficiency.
[0050] The conveying module 56 includes a conveying belt 561 and a marking device 562, and the marking device 562 is installed on the rack 1 through a fourth mounting frame 563. The marking is performed before the conveying of the products, which reduces the subsequent step of re-clamping and positioning the products after the conveying, simplifies the overall operation process, and improves the working efficiency.
[0051] The loading module 2 includes a loading fixture 21 and a loading table 22. The loading fixture 21 is mounted on the loading table 22, and the loading table 22 is set on the frame 1. A first sensor is set on the contact surface between the loading fixture 21 and the product to be tested.
[0052] In an exemplary embodiment, such as Figure 4 As shown, at least two loading fixtures 21 are provided on the loading platform 22. The first sensor is used to detect whether the product to be tested is placed in the loading fixture 21. When the product to be tested is detected to be placed in the loading fixture 21, a signal is sent to the moving feeding module 4 to transfer the product to be tested to the testing module 3. The combined valve airtightness testing mechanism shown in this utility model has a high degree of automation, which greatly reduces labor costs and improves product testing efficiency.
[0053] Working principle: First, when the first sensor detects that the product to be tested is placed in the loading fixture 21, the first sensor sends a signal to the moving feeding module 4 to transfer the product to be tested to the testing module 3. Specifically, the first rotary drive device 43 controls the second mounting frame 42 to rotate, thereby driving the first picking device 44 to rotate above the loading fixture 21. Then, the second power drive device 41 drives the first picking device 44 to move downward along the second mounting frame 42 until it contacts the upper surface of the product to be tested. The first picking device 44 picks up the product to be tested. After picking up the product, the first picking device 44 resets, and the second power drive device 41 drives the second mounting frame 42 to rotate, driving the first picking device 44 to rotate above the first mounting fixture 32, and placing the product to be tested on the first picking device 44 into the first mounting fixture 32.
[0054] Once the placement is complete, the first power drive device 31 drives the pressing device 34 to move downwards along the first mounting bracket 33 to the upper surface of the product under test until it is pressed tightly, and continuously provides stable pressure to eliminate the gap between the product under test and the first mounting fixture 32, avoid air leakage during the air tightness test, reduce the minor leakage problems that occur during the air tightness test, and improve the accuracy and reliability of the air tightness test.
[0055] The air tightness detection device sends gas into the cavity of the first mounting jig 32, and the pressure sensor detects the attenuation of the gas pressure in the cavity of the first mounting jig 32. If there is a leak in the cavity, the pressure will gradually decrease. According to the set determination threshold, it is determined whether the attenuation of the gas pressure exceeds the allowable range. If the pressure attenuation exceeds the set threshold, it is considered that the product has a leak and does not meet the air tightness requirement; otherwise, it is considered that the air tightness of the product is good. At this time, the moving unloader receives a start signal, and the second rotary drive device 54 controls the rotation of the third mounting frame 52, thereby driving the above-mentioned second material taking device 53 to rotate to the above-mentioned first mounting jig 32. When the air tightness detection result meets the standard, the above-mentioned second material taking device 53 moves the detected and qualified products from the test module 3 to the above-mentioned conveying module 56; when the air tightness detection result does not meet the standard, the above-mentioned second material taking device 53 puts the detected and unqualified products into the unqualified product box.
[0056] Finally, before the second material taking device 53 places the detected qualified products into the above-mentioned conveying module 56, the second material taking device 53 rotates the qualified products under the action of the above-mentioned third rotary drive device, so that the side wall of the qualified products is located below the marking device 562 for marking. The utility model cooperates the air tightness detection device with the pressing device. Before the air tightness of the to-be-tested product is detected, the pressing device 34 is driven to press the to-be-tested product mounted in the first mounting jig 32, so as to eliminate the gap between the first mounting jig 32 and the to-be-tested product, reduce the problem of micro-leakage in the air tightness detection process, and greatly improve the accuracy and reliability of the air tightness detection.
[0057] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.
[0058] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
[0059] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0060] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0061] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0062] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0063] It is to be understood that the terms "including", "comprising", "incorporating", "having" or "containing" or the like are used inclusively and are not exclusionary or open ended. For example, a composition, process or method that includes (or includes the presence of) elements A, B and C can also include (or include the presence of) one or more additional elements or steps, whether or not specifically listed. A description utilizing terms such as "comprising" or "containing" to describe a combination shall also be applicable to elements or steps of for example, "consisting of" or "consisting essentially of".
Claims
1. A combined valve air tightness detection mechanism characterized by, The utility model relates to a kind of automatic testing machine, including: Rack (1), the rack (1) is provided with feeding module (2), mobile feeding module and at least one test module (3), the mobile feeding module is arranged between the feeding module (2) and the test module (3); The test module (3) includes first power drive device (31), air tightness detection device and first mounting bracket (33), the first mounting bracket (33) is installed on the table top of the rack (1), the first power drive device (31) is slidably installed on the first mounting bracket (33), the first power drive device (31) is connected with down device (34), the air tightness detection device is installed on the first mounting bracket (33), and the air tightness detection device is oppositely arranged with the down device (34).
2. The combined valve airtightness detection mechanism according to claim 1, characterized by, The air tightness detection device includes first mounting jig (32), several connecting pipes and air pressure generating device, the first mounting jig (32) is provided with at least one first connecting hole and at least one second connecting hole, the several connecting pipes include at least one first connecting pipe and at least one second connecting pipe, the first connecting hole is connected with the air pressure generating device by the first connecting pipe, and the second connecting hole is connected with the air pressure generating device by the second connecting pipe.
3. The combined valve airtightness detection mechanism according to claim 1, characterized by, The mobile feeding module (4) includes second power drive device (41) and second mounting bracket (42), first rotary drive device (43) is arranged between the second mounting bracket (42) and the rack (1), and the first rotary drive device (43) is used to drive the second mounting bracket (42) to rotate, and the second power drive device (41) is connected with first material taking device (44).
4. The combined valve airtightness detection mechanism according to claim 3, characterized by, The first material taking device (44) is material taking gripper.
5. The combined valve leak detection mechanism of claim 1, wherein, It further includes discharging module (5), the discharging module (5) includes mobile discharging device and conveying module (56), the mobile discharging device is arranged between the conveying module (56) and the test module (3), and the mobile discharging device is oppositely arranged with the mobile feeding module (4).
6. The combined valve leak detection mechanism of claim 5, wherein, The mobile discharging device includes third power drive device (51) and third mounting bracket (52), second rotary drive device (54) is arranged between the third mounting bracket (52) and the rack (1), and the second rotary drive device (54) is used to drive the third mounting bracket (52) to rotate, and the third power drive device (51) is connected with second material taking device (53).
7. The combined valve leak detection mechanism of claim 6, wherein, The second material taking device (53) is material taking gripper.
8. The combined valve leak detection mechanism of claim 6, wherein, The second material taking device (53) is installed on the third power drive device (51) by third rotary drive device (55), and the third rotary drive device (55) is used to drive the second material taking device (53) to rotate.
9. The combined valve leak detection mechanism of claim 5, wherein, The conveying module (56) includes conveying belt (561) and marking device (562), and the marking device (562) is installed on the rack (1) by fourth mounting bracket (563).
10. The combined valve leak detection mechanism of claim 1, wherein, The feeding module (2) comprises a loading jig (21) and a loading table (22), the loading jig (21) is installed on the loading table (22), the loading table (22) is arranged on the rack (1), and the loading jig (21) is provided with a first sensor on a contact surface of a product to be measured.