A product air tightness detection device

Abstract

The application relates to the product detection technical field, in particular to a product air tightness detection device which is used for a product including a product body and a shell, and comprises a rack, a feeding mechanism, a transfer mechanism, a fixing mechanism, a detection mechanism and a conveying mechanism arranged on the rack. After the feeding mechanism realizes automatic feeding of the product, the transfer mechanism transfers the product from an initial position to the fixing mechanism, the fixing mechanism fixes the shell on the outer wall of the product body, then the transfer mechanism transfers the product with the fixed shell to the detection mechanism, the detection mechanism autonomously completes air tightness detection and obtains whether the result meets the standard, after the detection is completed, the transfer mechanism transfers the product to the conveying mechanism, the conveying mechanism can also meet the shunting demand while conveying the product to the next process, and unqualified products are separately classified and stored. The above process forms a continuous automatic process from product feeding, shell fixing, air tightness detection to shunting conveying after detection, and the overall efficiency of product air tightness detection is effectively improved.

Description

Technical Field

[0001] This application relates to the field of product testing technology, and in particular to a product airtightness testing device. Background Technology

[0002] In the modern manufacturing system, pre-shipment testing is a core link in ensuring product quality, maintaining brand reputation, and avoiding safety risks. Before leaving the factory, the market requires products to undergo multi-dimensional testing, including mechanical properties, electrical safety, and sealing performance. Among these, sealing performance testing has become a mandatory testing item in many industries because it is directly related to the product's service life and safety. Product airtightness refers to the product's ability to prevent gas leakage, and it is applicable to products with cavities, pipes, or sealing structures.

[0003] In the relevant technology, the operator first transfers the product to be tested from the production line conveyor to the testing station, manually adjusts the three-dimensional posture of the product, and then starts the airtightness testing equipment to test the airtightness of the product. After the test is completed, the airtightness testing equipment will automatically display the test results. Qualified products are transferred to the next process, while unqualified products need to be manually recorded for differential pressure abnormality data and then classified separately.

[0004] However, the loading process requires manual transfer of products to the testing station. After testing, data must be read manually to determine whether the products are qualified or not. Then, unqualified products are classified and stored separately. This makes it impossible to form a continuous automated closed loop from product loading, through testing, separation of qualified and unqualified products, to final unloading, which reduces the overall efficiency of product airtightness testing. Utility Model Content

[0005] To address the aforementioned issues, this application provides a product airtightness testing device.

[0006] The product airtightness testing device provided in this application adopts the following technical solution: An airtightness testing device for a product, comprising a product body and a shell, includes a frame, a feeding mechanism, a transfer mechanism, a fixing mechanism, a testing mechanism, and a conveying mechanism. The feeding mechanism, transfer mechanism, fixing mechanism, testing mechanism, and conveying mechanism are all mounted on the frame. The feeding mechanism feeds the product; the transfer mechanism transfers the product to the fixing mechanism; the fixing mechanism fixes the shell to the outer wall of the product body; the transfer mechanism transfers the product with the shell fixed to the testing mechanism; the testing mechanism performs airtightness testing on the product; and the transfer mechanism transfers the tested product to the conveying mechanism, which then conveys the tested product to the next process.

[0007] By adopting the above technical solution, the feeding mechanism automatically feeds the product, and the transfer mechanism transfers the product from the initial feeding position to the fixing mechanism. The fixing mechanism secures the outer shell to the outer wall of the product body. After completing the necessary assembly preparations before product testing, the transfer mechanism continues to transfer the product with the fixed outer shell to the testing mechanism. The testing mechanism can autonomously complete the product's airtightness test and directly obtain the test results to determine whether the product's airtightness meets the standards. After the test is completed, the transfer mechanism further transfers the product to the conveying mechanism, which can convey the tested product to the next process. Simultaneously, during the conveying process, it can connect to product diversion requirements, allowing for the separate classification and storage of non-conforming products. Throughout the entire process, feeding, product transfer, outer shell fixing, airtightness testing, and post-test product transfer are all completed collaboratively by the feeding mechanism, transfer mechanism, fixing mechanism, testing mechanism, and conveying mechanism. This forms a continuous automated process from product feeding, through outer shell fixing, airtightness testing, post-test product diversion, to final transfer to the next process, thereby improving the overall efficiency of the product airtightness testing process.

[0008] Preferably, the feeding mechanism includes multiple material frames and a conveying channel, the conveying channel running through the frame, and the multiple material frames being disposed on the conveying channel, each material frame being used to carry several products.

[0009] By adopting the above technical solution, the conveying channel can drive the material frame to move along the path of the conveying channel, and transport the material frame carrying the product to the position that is compatible with the transfer mechanism. At the same time, multiple material frames can flow sequentially on the conveying channel to realize continuous feeding of products, reduce the situation of waiting for materials in subsequent stages due to the limited amount of material fed at one time, and provide feeding guarantee for the continuous operation of the entire airtightness testing device.

[0010] Preferably, the transfer mechanism includes at least one gripping element.

[0011] By adopting the above technical solution, the gripper can grab the product conveyed by the feeding mechanism, realizing the automated transfer of the product from the material frame of the conveying channel to the fixing mechanism. After the product shell and product body are fixed by the fixing mechanism, the gripper can grab the fixed product again and transfer it to the testing mechanism. After the testing mechanism completes the airtightness test, the gripper grabs the tested product and transfers it to the conveying mechanism.

[0012] Preferably, the fixing mechanism includes two fixing blocks and a fixing platform, the two fixing blocks are arranged opposite to each other, and the two fixing blocks are slidably disposed on the fixing platform.

[0013] By adopting the above technical solution, the sliding adjustment of the fixing block on the fixing platform adjusts the distance between the two fixing blocks, so that the fixing blocks can accurately fit the two sides of the product shell. After the transfer mechanism transfers the product to the fixing platform, the two fixing blocks can move closer to and press against the shell from opposite directions, stably fixing the shell to the outer wall of the product body, ensuring that the assembly position of the shell and the body is accurate and tightly fitted.

[0014] Preferably, the testing mechanism is provided in several groups, and the testing mechanism is provided with a testing platform, a testing component and an air pipe. The testing component is set on the testing platform, the product is built into the testing component, the air pipe is connected to the testing component, and the air pipe is connected to an external air supply device.

[0015] By adopting the above technical solution, the testing organization is set up in several groups, which can simultaneously accept multiple batches of products sent by the transfer organization, realize parallel airtightness testing, reduce the waiting time of a single batch of products, and improve the overall testing efficiency. In each group of testing organizations, the testing table provides stable support for the testing components. The product is built into the testing components, which can form a closed and compatible space between the product and the testing components. One end of the air pipe is connected to the testing components, and the other end is connected to an external air supply device. The air supply device can stably deliver testing gas to the testing process, ensuring stable injection pressure and flow rate. During testing, the air supply device fills the testing components with testing gas through the air pipe. The device records the amount of gas filled in real time. After the filling is completed, the air pipe can recover the gas in the testing components. The device records the amount of gas recovered in real time. By comparing the changes in the filling amount and the recovered amount, the airtightness status of the product can be determined. Preferably, the detection assembly includes an upper detection seat and a lower detection seat. The lower detection seat is disposed on the detection platform, and the upper detection seat is slidably disposed above the lower detection seat in a vertical direction. The lower detection seat is provided with a placement groove, and the upper detection seat is provided with a clearance groove. The upper detection seat covers the lower detection seat, and the clearance groove and the placement groove form a sealed cavity. The air pipe is fixedly connected to the upper detection seat and communicates with the clearance groove.

[0016] By adopting the above technical solution, the lower detection seat is set on the detection platform, which provides stable support for the lower detection seat. The placement slot of the lower detection seat can carry the product. The upper detection seat slides vertically above the lower detection seat, which facilitates the transfer mechanism to place the product in the placement slot. After the upper detection seat is placed, it can quickly move vertically downward to cover the lower detection seat. After the cover is closed, the clearance slot of the upper detection seat and the placement slot of the lower detection seat form a sealed cavity, in which the product is completely embedded, providing a basic guarantee for the air circuit sealing. The air pipe is directly connected to the clearance slot, and the clearance slot and the placement slot form a sealed cavity. An external air supply device can stably fill the cavity with test gas through the air pipe. The device records the amount of gas filled in real time. After the filling is completed, the air pipe recovers the gas in the cavity, and the device records the amount of gas recovered. By comparing the changes in the two values, the air tightness of the product is judged. If the difference exceeds the preset standard, there is a leak.

[0017] Preferably, at least one elastic element is provided between the lower detection seat and the detection table, one end of the elastic element is fixedly connected to the lower detection seat, and the other end of the elastic element is fixedly connected to the detection table.

[0018] By adopting the above technical solution, when the upper detection seat moves down vertically to cover the lower detection seat, the elastic element can buffer the covering pressure applied by the upper detection seat through its own elastic deformation, reduce the direct impact on the lower detection seat caused by hard contact between the lower detection seat and the detection table, and protect the product placed in the slot from squeezing damage.

[0019] Preferably, the conveying mechanism includes two conveyor belts, which are rotatably supported on the frame.

[0020] By adopting the above technical solution, after the testing agency completes the airtightness test and outputs the results, the transfer mechanism can transfer the qualified products to one of the conveyor belts and the unqualified products to another conveyor belt according to the test results. This allows the two types of products to be physically separated directly in the transfer process, reducing the mixing of qualified and unqualified products and improving the overall product flow efficiency.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. After the feeding mechanism automatically feeds the product, the transfer mechanism transfers the product from the initial feeding position to the fixing mechanism. The fixing mechanism fixes the outer shell on the outer wall of the product body, preparing for assembly for testing. Then, the transfer mechanism continues to transfer the product with the fixed outer shell to the testing mechanism. The testing mechanism can independently complete the product's airtightness test and directly obtain the result of whether it meets the standard. After the test, the transfer mechanism further transfers the product to the conveying mechanism. While conveying the tested product to the next process, the conveying mechanism can also connect the product diversion requirements and realize the separate classification and storage of non-conforming products. In the whole process, feeding, product transfer, outer shell fixing, airtightness testing, post-test product transfer and diversion are completed in a coordinated manner, forming a continuous automated process from product feeding, through outer shell fixing, airtightness testing, post-test product diversion, to finally being conveyed to the next process, effectively improving the overall efficiency of the product airtightness testing process; 2. The gripper can grip the products conveyed by the feeding mechanism, realizing the automated transfer of products from the material frame of the conveying channel to the fixing mechanism. After the product shell is fixed to the product body by the fixing mechanism, the gripper can grip the fixed product again and transfer it to the inspection mechanism. After the inspection mechanism completes the airtightness test, the gripper grips the inspected product and transfers it to the conveying mechanism. 3. After the testing agency completes the airtightness test and outputs the results, the transfer mechanism can transfer the qualified products to one of the conveyor belts and the unqualified products to another conveyor belt, so that the two types of products can be physically separated directly in the transfer process, reducing the mixing of qualified and unqualified products and improving the overall product flow efficiency. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0023] Figure 2 This is a structural schematic diagram of an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the feeding mechanism.

[0025] Figure 4 This is a structural diagram of the fixed mechanism.

[0026] Figure 5 This is a structural diagram of the testing organization.

[0027] Figure 6 This is a structural diagram of the testing organization.

[0028] Figure 7 This is a schematic diagram of the transmission mechanism.

[0029] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Feeding mechanism; 21. Material frame; 22. Conveying channel; 23. Gripping assembly; 231. First drive cylinder; 232. Second drive cylinder; 233. Drive rod; 234. Support frame; 235. Suction cup; 3. Transfer mechanism; 31. Gripping component; 4. Fixing mechanism; 41. Fixing block; 42. Fixing platform; 43. Third drive cylinder; 5. Detection mechanism; 51. Detection platform; 52. Air pipe; 53. Detection assembly; 531. Upper detection seat; 5311. Clearing groove; 532. Lower detection seat; 5322. Placement groove; 533. Drive motor; 534. Fourth drive cylinder; 54. Elastic element; 6. Conveying mechanism; 61. Conveyor belt; a. Product body; b. Outer shell; c. Material tray. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0031] This application discloses a product airtightness testing device. (Refer to...) Figure 1 and Figure 2 A product airtightness testing device is used to test the airtightness of a product. In this embodiment, the product includes a product body a and a shell b, with the shell b fixed to the outer wall of the product body a. The product airtightness testing device includes a frame 1, a feeding mechanism 2, a transfer mechanism 3, a fixing mechanism 4, a testing mechanism 5, and a conveying mechanism 6, wherein the feeding mechanism 2, the transfer mechanism 3, the fixing mechanism 4, the testing mechanism 5, and the conveying mechanism 6 are all mounted on the frame 1.

[0032] Furthermore, the feeding mechanism 2 feeds the product, the transfer mechanism 3 transfers the product to the fixing mechanism 4, the fixing mechanism 4 fixes the outer shell b to the outer wall of the product body a, then the transfer mechanism 3 transfers the product with the outer shell b fixed to the testing mechanism 5 for airtightness testing, and finally the transfer mechanism 3 transfers the tested product to the conveying mechanism 6, which then diverts the tested product to the next process.

[0033] Furthermore, throughout the entire process, the feeding, product transfer, shell b fixing, airtightness testing, and post-test product transfer are all completed through the coordinated operation of the feeding mechanism, transfer mechanism 3, fixing mechanism 4, testing mechanism 5, and conveying mechanism 6. This forms a continuous automated process from product feeding, through shell b fixing, airtightness testing, post-test product diversion, to final transfer to the next process, creating a continuous automated closed-loop testing process that greatly improves the overall product airtightness testing efficiency.

[0034] Reference Figure 3Specifically, the feeding mechanism 2 includes multiple material frames 21 and a conveying channel 22. The conveying channel 22 is set inside the frame 1, and the multiple material frames 21 are all set on the conveying channel 22. The material frames 21 are used to carry several products. The material frames 21 can be made of plastic. In this embodiment, several products are placed on a single material tray c in a regular layout. Each material tray c can stably carry the corresponding number of products. On this basis, multiple material trays c that have carried products are stacked in the material frame 21 in a stacked manner to realize the batch storage of products. At this time, the product body a is placed inside the outer shell b, which is in an unfixed state.

[0035] In addition, the feeding mechanism 2 also includes a gripping component 23, which includes a first driving cylinder 231, a second driving cylinder 232, a driving rod 233, a support frame 234, and several suction cups 235. The suction cups 235 are connected to an external air supply device and are fixed on the support frame 234. The piston rod of the first driving cylinder 231 is fixedly connected to the support frame 234. One end of the driving rod 233 is rotatably supported on the frame 1. The piston rod of the second driving cylinder 232 is fixedly connected to one end of the driving rod 233 that is rotatably supported on the frame 1. The second driving cylinder 232 is fixed to the frame 1, and the other end of the driving rod 233 is rotatably supported on the support frame 234.

[0036] Furthermore, when the piston rod of the second drive cylinder 232 extends or retracts, it will push the drive rod 233 to rotate. Since the other end of the drive rod 233 is rotated and supported by the support frame 234, the rotation of the drive rod 233 will apply a horizontal driving force to the support frame 234, causing the support frame 234 to move smoothly along the horizontal material frame 21. At the same time, the piston rod of the first drive cylinder 231 is fixedly connected to the support frame 234, which can synchronously drive the support frame 234 to rise and fall in the vertical direction. With the cooperation of several suction cups 235 of the external air supply device on the support frame 234, when the transfer mechanism 3 finishes grabbing the product on the material tray c, the several suction cups 235 contact the material tray c to perform negative pressure adsorption, causing the support frame 234 and the adsorbed material tray c to move horizontally to the preset material tray c storage area. At this time, the transfer mechanism 3 grabs the product on the next material tray c.

[0037] Furthermore, the transfer mechanism 3 includes at least one gripper 31. In this embodiment, there are two grippers 31, and the grippers 31 are configured as robotic arms. The grippers 31 are located at both ends of the gripping assembly 23 and are fixed to the frame 1.

[0038] Reference Figure 4Furthermore, the fixing mechanism 4 is provided in two sets, which are arranged side by side on the frame 1. The fixing mechanism 4 includes two fixing blocks 41 and a fixing platform 42. The two fixing blocks 41 are arranged opposite each other and are slidably disposed on the fixing platform 42. The fixing mechanism 4 also includes a third driving cylinder 43. There are two third driving cylinders 43, which are fixed to the lower surface of the fixing platform 42. The piston rod of the third driving cylinder 43 is fixedly connected to the fixing block 41, and the piston rod of the third driving cylinder 43 drives the fixing block 41 to slide on the fixing platform 42.

[0039] At the same time, the gripper 31 places the product on the fixed platform 42, and the two fixed blocks 41 slide relative to each other and abut against the outer shell b, pushing the outer shell b to fix the outer shell b to the outer wall of the product body a, ensuring the stability of the product during the testing process.

[0040] Reference Figure 5 and Figure 6 Furthermore, the detection mechanism 5 is provided in several groups. In this embodiment, there are four groups of detection mechanisms 5, which are evenly distributed on the frame 1. Each detection mechanism 5 is provided with a detection platform 51, a detection component 53, and an air pipe 52. The detection component 53 is set on the detection platform 51, and the product is built into the detection component 53. The air pipe 52 is connected to the detection component 53 and is connected to an external air supply device. In this embodiment, the air supply device is set as an air tightness gauge. An air tightness gauge is a special device used to detect the air tightness of a closed space or product. Its core function is to determine whether there is a gas leak in the target object by monitoring the changes in parameters such as pressure, flow rate, and concentration of gas in a closed environment. Furthermore, the detection component 53 includes an upper detection seat 531 and a lower detection seat 532. The lower detection seat 532 is disposed on the detection table 51. In this embodiment, there are two lower detection seats 532, both of which are disposed on the platform. The platform is rotatably supported on the frame 1. The detection component 53 also includes a drive motor 533, which is disposed below the detection table 51. The drive shaft of the drive motor 533 drives the detection table 51 to rotate. There is one upper detection seat 531, which slides vertically above the lower detection seat 532. The detection component 53 also includes a fourth drive cylinder 534. The piston rod of the fourth drive cylinder 534 is fixedly connected to the upper detection seat 531. The extension and retraction of the piston rod of the fourth drive cylinder 534 drives the upper detection seat 531 to slide.

[0041] Meanwhile, the lower detection seat 532 is provided with a placement groove 5322, and the upper detection seat 531 is provided with a clearance groove 5311. The piston rod of the fourth drive cylinder 534 drives the upper detection seat 531 to move downward to cover the lower detection seat 532. The clearance groove 5311 and the placement groove 5322 form a sealed cavity, and the air pipe 52 is connected to the sealed cavity.

[0042] This means that the gripper 31 transfers the product to the placement slot 5322 of one of the lower detection seats 532. The piston rod of the fourth drive cylinder 534 drives the upper detection seat 531 to move downward and cover the lower detection seat 532. The product is built into the sealed cavity. After the air tightness meter fills the sealed cavity with detection gas through the air tube 52, it collects the amount of gas filled and the stable pressure value in the cavity in real time. When the air tightness meter extracts the detection gas through the air tube 52, it simultaneously records the amount of gas recovered and the stable pressure value in the cavity. By analyzing the difference between these data, it is determined whether the air tightness of the output product meets the standard.

[0043] Meanwhile, when the product in one of the lower detection seats 532 completes the airtightness test, the gripper 31 has already placed another product to be tested smoothly in the placement slot 5322 of the other lower detection seat 532 of the same lower detection platform 51. At this time, the drive motor 533 starts and drives the lower detection platform 51 to rotate. Under the rotation of the lower detection platform 51, the other lower detection seat 532 with the product to be tested is rotated to the position directly below the upper detection seat 531. The lower detection seat 532 that has completed the test moves away from the position below the upper detection seat 531 with the rotation of the lower detection platform 51, so that the gripper 31 can transfer the tested product to the conveying mechanism 6.

[0044] In addition, at least one elastic element 54 is provided between the lower detection seat 532 and the detection table 51. In this embodiment, each lower detection seat 532 is provided with four elastic elements 54. The four elastic elements 54 are located at the four corners of the lower detection seat 532. One end of the elastic element 54 is fixedly connected to the lower detection seat 532, and the other end of the elastic element 54 is fixedly connected to the detection table 51. The elastic element 54 is set as a spring. The function of the elastic element 54 is to buffer the impact force on the lower detection seat 532 when the upper detection seat 531 closes, protect the detection component 53 and the product from damage, and at the same time ensure the sealing between the upper detection seat 531 and the lower detection seat 532.

[0045] Reference Figure 7 Furthermore, the conveying mechanism 6 includes two conveyor belts 61, which are arranged in parallel on the frame 1. One conveyor belt 61 is specifically used to convey products that have been determined by the testing mechanism 5 to meet the airtightness standard, while the other conveyor belt 61 is specifically used to convey products that have failed the airtightness test.

[0046] Furthermore, after the testing agency 5 completes the product testing and outputs the results, the gripper 31 can grab and place qualified products onto the dedicated conveyor belt 61 for transporting qualified products, and grab and place unqualified products onto the dedicated conveyor belt 61 for transporting unqualified products. The two conveyor belts 61 operate synchronously, which can respectively transport qualified products to subsequent processes and unqualified products to rework, repair, and classification storage.

[0047] The implementation principle of a product airtightness testing device according to an embodiment of this application is as follows: The transfer mechanism 3 first grabs the first product from the top tray c and transfers it to the fixing platform 42 of the fixing mechanism 4. After the product is in place, the fixing mechanism 4 is immediately activated. The two third drive cylinders 43 drive the fixing block 41 to slide and abut against the outer shell b, pressing against the outer shell b from both sides and fixing the outer shell b to the outer wall of the product body a. At the moment the fixing is completed, the transfer mechanism 3 grabs the product and transfers it to the placement slot 5322 of the lower detection seat 532 of the detection mechanism 5. The detection mechanism 5 responds synchronously, and the fourth drive cylinder 534 drives the upper detection seat 531 to descend and cover the lower detection seat 532 to form a sealed cavity. The air tightness gauge fills and releases gas through the air pipe 52 and compares the gas parameters to complete the detection.

[0048] When the fixing mechanism 4 fixes the current product shell b, the transfer mechanism 3 is already picking up the remaining product on the tray c. When the detection mechanism 5 detects the current product, the fixing mechanism 4 is already processing the next product newly delivered by the transfer mechanism 3.

[0049] While the fixed mechanism 4 and the inspection mechanism 5 are operating synchronously, the transfer mechanism 3 always maintains uninterrupted material picking. After transferring the previous product to the fixed mechanism 4, it immediately returns to the material tray c to grab the remaining products and transfers them to the fixed mechanism 4 in sequence, ensuring that the fixed mechanism 4 always has new products to process and reducing process delays caused by waiting for material picking.

[0050] When the transfer mechanism 3 has finished grabbing all the products on a single tray c and the tray c is empty, the gripping component 23 starts synchronously. The second drive cylinder 232 drives the support frame 234 to move horizontally above the empty tray c. The first drive cylinder 231 drives the support frame 234 to descend. The suction cup 235 uses negative pressure to adsorb the empty tray c. Then the support frame 234 rises and moves to the empty tray c storage area to release the empty tray c. At this time, the new tray c, which was originally superimposed on the empty tray c and carrying the products, is automatically exposed. The transfer mechanism 3 immediately turns to the new tray c to grab the products and continues to transfer to the fixing mechanism 4.

[0051] If all the stacked trays c in the current material frame 21 have been processed and the material frame 21 is empty, the conveyor channel 22 will start immediately to transport the next material frame 21 with a full tray c to the loading station to replace the empty material frame 21. After the new material frame 21 arrives, the transfer mechanism 3 will directly grab the product from the top tray c of the new material frame 21.

[0052] After the testing agency 5 completes the product airtightness determination, the transfer agency 3, based on the test results, transfers qualified and unqualified products to the two parallel conveyor belts 61 of the conveying agency 6. The conveying agency 6 operates synchronously, and the two conveyor belts 61 send qualified products to the subsequent process and unqualified products to the rework and repair stage.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A product airtightness testing device, applied to a product, the product comprising a product body (a) and a shell (b), characterized in that, The system includes a frame (1), a feeding mechanism (2), a transfer mechanism (3), a fixing mechanism (4), a detection mechanism (5), and a conveying mechanism (6). The feeding mechanism (2), the transfer mechanism (3), the fixing mechanism (4), the detection mechanism (5), and the conveying mechanism (6) are all mounted on the frame (1). The feeding mechanism (2) is used to feed the product. The transfer mechanism (3) is used to transfer the product to the fixing mechanism (4). The fixing mechanism (4) is used to fix the outer shell (b) to the outer wall of the product body (a). The transfer mechanism (3) transfers the product with the fixed outer shell (b) to the detection mechanism (5). The detection mechanism (5) is used to perform airtightness testing on the product. The transfer mechanism (3) transfers the tested product to the conveying mechanism (6). The conveying mechanism (6) is used to convey the tested product to the next process.

2. The product airtightness testing device according to claim 1, characterized in that, The feeding mechanism (2) includes multiple material frames (21) and a conveying channel (22). The conveying channel (22) is located inside the frame (1). The multiple material frames (21) are all located on the conveying channel (22). The material frames (21) are used to carry several products.

3. The product airtightness testing device according to claim 1, characterized in that, The transfer mechanism (3) includes at least one gripper (31).

4. The product airtightness testing device according to claim 1, characterized in that, The fixing mechanism (4) includes two fixing blocks (41) and a fixing platform (42). The two fixing blocks (41) are arranged opposite to each other and are slidably disposed on the fixing platform (42).

5. The product airtightness testing device according to claim 1, characterized in that, The testing mechanism (5) is provided with several sets. The testing mechanism (5) is provided with a testing platform (51), an air pipe (52) and a testing component (53). The testing component (53) is set on the testing platform (51). The product is built into the testing component (53). The air pipe (52) is connected to the testing component (53). The air pipe (52) is connected to an external air supply device.

6. The product airtightness testing device according to claim 5, characterized in that, The detection assembly (53) includes an upper detection seat (531) and a lower detection seat (532). The lower detection seat (532) is disposed on the detection stage (51). The upper detection seat (531) is slidably disposed above the lower detection seat (532) in a vertical direction. The lower detection seat (532) is provided with a placement groove (5322). The upper detection seat (531) is provided with a clearance groove (5311). The upper detection seat (531) covers the lower detection seat (532). The clearance groove (5311) and the placement groove (5322) form a sealed cavity. The air tube (52) is fixedly connected to the upper detection seat (531) and communicates with the clearance groove (5311).

7. The product airtightness testing device according to claim 6, characterized in that, At least one elastic element (54) is provided between the lower detection seat (532) and the detection table (51). One end of the elastic element (54) is fixedly connected to the lower detection seat (532), and the other end of the elastic element (54) is fixedly connected to the detection table (51).

8. The product airtightness testing device according to claim 1, characterized in that, The conveying mechanism (6) includes two conveyor belts (61) that are rotatably supported on the frame (1).

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