Continuous Aluminum Film Balloon Air Tightness Detection Device and Method for Dynamic Seal Detection

Abstract

The present invention relates to the technical field of aluminum film balloon detection, specifically to a continuous airtightness detection device and method for aluminum film balloons for dynamic seal detection, including a box body with clear water stored inside and a bracket arranged inside the box body; an inflation head for inflating the aluminum film balloon is arranged on the bracket, and a sealing unit for sealing the connection between the inflation head and the aluminum film balloon after they are connected. Two first pressing plates are arranged above the bracket, symmetrically arranged with respect to the inflation head, and the aluminum film balloon after being connected to the inflation head is located between the two first pressing plates. When testing the sealability of the connection, the two first pressing plates squeeze the uninflated aluminum film balloon. The present invention improves the accuracy of the test results.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum film balloon detection, and specifically relates to a continuous airtightness detection device and method for dynamic seal detection of aluminum film balloons. Background Technique

[0002] There are various types of balloons. Among them, aluminum film balloons usually have a relatively large volume. However, when performing airtightness detection, the detection principles of all balloons are basically the same, that is, after the balloons are produced, they are inflated and it is observed whether there is air leakage. If the airtightness of the balloon is poor, it will affect subsequent use, and balloons with poor airtightness need to be picked out before leaving the factory.

[0003] Chinese Patent Publication No. CN211877331U discloses a balloon airtightness detection device, including a base. A pillar is fixedly connected to the bottom of the base. A display device is fixedly connected to the top of the base. A sealing box is fixedly connected to the top of the base. A pressure monitor is fixedly connected to the inside of the sealing box. An air pump is fixedly connected to the top of the sealing box. A box body is fixedly connected to the top of the base. A sleeve is fixedly connected to the inside of the box body. A suction cup is fixedly connected to the right side of the sleeve. A connecting rod is movably connected to the inside of the box body. A first electric push rod is fixedly connected to the top of the box body. A backing plate is fixedly connected to the inside of the box body. A motor is fixedly connected to the top of the backing plate. A rotating shaft is fixedly connected to the output shaft of the motor. A driving gear is fixedly connected to the outer wall of the rotating shaft. A second electric push rod is fixedly connected to the top of the backing plate. A groove body is movably connected to the outer wall of the rotating shaft. A turntable is movably connected to the inside of the box body.

[0004] The above solution mainly aims at spherical balloons made of rubber. Before inflation, aluminum film balloons are in a flat structure, and the position of the inflation port is different from that of spherical balloons made of rubber. When inflating an aluminum film balloon, the inflation port of the aluminum film balloon is located at the end of one of its surfaces, and the inflation port has the ability to self-seal. When inflating, the inflation head needs to be set at the inflation port, and the surface of the aluminum film balloon below the inflation port needs to be pressed down to make a crack in the inflation port and then insert the inflation port. In the existing detection process, most of the inflation heads are inserted into the inflation port manually, and during inflation, the hand-pressing method is also used to seal the inflation port. In this way, it is impossible to ensure that the inflation port is completely sealed, which will lead to deviation in the final detection result. Moreover, aluminum film balloons do not have elasticity themselves. Compared with elastic rubber balloons, even if there is a sealing problem, there will be no obvious air leakage phenomenon during the inflation process.

[0005] Meanwhile, among the existing detection methods, the water detection method is a commonly used detection method with relatively high accuracy. The water detection method requires the use of a water tank, but the water tank and the inflation head are separately arranged. That is, during detection, the inflation head is inserted into the inflation port of the aluminum film balloon, and then the aluminum film balloon is placed into the water tank. During detection, the inflation head inflates the aluminum film balloon, and the inflation condition of the aluminum film balloon is judged by the bubbles. However, the above method has drawbacks, that is, it is impossible to judge the airtight condition of the inflation port of the aluminum film balloon, which easily leads to deviation of the detection result. Summary of the Invention

[0006] In view of the above problems, a continuous airtightness detection device and method for aluminum film balloons with dynamic seal detection are provided. By respectively arranging a pressing plate on both sides of the inflation head, before the inflation head inflates the aluminum film balloon, the aluminum film balloon is first squeezed by the two pressing plates, so that the inflation head cannot fill the aluminum film balloon with gas. However, the air pressure at the connection between the aluminum film balloon and the inflation head will continuously rise. If the sealing unit does not seal the aluminum film balloon and the inflation head well, bubbles will appear at the connection between the aluminum film balloon and the inflation head. After the position of the aluminum film balloon is adjusted for the second time, if bubbles still appear, it indicates that there is a problem with the sealing unit. If no bubbles are generated during the inflation test of the connection between the aluminum film balloon and the inflation head, it indicates that the connection is well sealed, avoiding deviation of the test result due to air leakage at the connection between the aluminum film balloon and the inflation head during the subsequent airtightness test of the aluminum film balloon and improving the accuracy of the test result.

[0007] To solve the problems of the existing technology, the present invention provides a continuous airtightness detection device for aluminum film balloons with dynamic seal detection, including a box body with clear water stored inside and a bracket arranged inside the box body; an inflation head for inflating the aluminum film balloon is arranged on the bracket, and a sealing unit for sealing the connection between the inflation head and the aluminum film balloon after connection. Two pressing plates are arranged above the bracket, the two pressing plates are symmetrically arranged with respect to the inflation head, and the aluminum film balloon after connection with the inflation head is located between the two pressing plates. When testing the airtightness of the connection, the two pressing plates squeeze the non-inflated aluminum film balloon.

[0008] Preferably, the air outlet end of the inflation head is vertically upward.

[0009] Preferably, when the aluminum film balloon is installed on the inflation head, the two pressing plates limit the aluminum film balloon, and the inclination angle of the limited aluminum film balloon is less than 45 degrees.

[0010] Preferably, the sealing unit includes two clamping members symmetrically arranged with respect to the inflation head. The two clamping members approach or move away from each other horizontally towards the inflation head. An arc-shaped silica gel sheet is arranged on the side where the two clamping members approach each other. The two clamping members clamp and seal the aluminum film balloon sleeved on the inflation head through the arc-shaped silica gel sheet.

[0011] Preferably, the inflation port on the aluminum film balloon has a self-sealing area, and the arc-shaped silica gel sheet is located within the self-sealing area when clamping the aluminum film balloon. Preferably, the aluminum film balloon has a rated inflation threshold. When testing the airtightness of the aluminum film balloon, the amount of gas filled into the aluminum film balloon is the same as the lowest value of the rated inflation threshold.

[0012] Preferably, a synchronous movement unit for driving the two pressing plates to move synchronously is further provided on the bracket. The synchronous movement unit includes two inflation chambers corresponding to the two pressing plates. An inflation sleeve communicated with the inflation chamber is provided below the inflation chamber. An inflation rod is slidably arranged in the inflation sleeve, and a pushing unit respectively hinged to the two inflation rods is arranged between the two inflation rods.

[0013] Preferably, a first one-way valve and a second one-way valve are respectively arranged on the inflation sleeve. The inflation sleeve is communicated with the outside through the first one-way valve. The second one-way valve is located between the inflation chamber and the inflation sleeve, and the second one-way valve allows the air in the inflation sleeve to flow into the inflation chamber.

[0014] Preferably, a reversing valve is arranged between the second one-way valve and the inflation chamber. The lower part of the reversing valve has two connection positions. The first one-way valve is communicated with one of the connection positions, and an air pump is communicated with the other connection position. The air pump is located outside the box body, and the air pump extracts the air in the inflation chamber through the reversing valve.

[0015] The present invention also relates to a continuous airtightness detection method for aluminum film balloons using dynamic seal detection, which adopts a continuous airtightness detection device for aluminum film balloons using dynamic seal detection. The specific working steps are as follows:

[0016] S1. Installation: Install the aluminum film balloon on the inflation head and clamp and seal the connection between the aluminum film balloon and the inflation head through the sealing unit.

[0017] S2. Test the sealing condition of the connection between the aluminum film balloon and the inflation head: The two pressing plates completely clamp the aluminum film balloon, and at the same time, the inflation head inflates the aluminum film balloon. If there is an air leakage at the connection between the aluminum film balloon and the inflation head, the connection position between the aluminum film balloon and the inflation head is adjusted again. If there is still an air leakage, check whether the sealing unit is damaged.

[0018] S3. Test the sealing state of the aluminum film balloon: If there is no air leakage at the connection between the inflation head and the aluminum film balloon, the two pressing plates loosen the aluminum film balloon, then the inflation head inflates the aluminum film balloon with a rated amount of gas, and finally the two pressing plates squeeze towards the expanded aluminum film balloon again to observe whether there are bubbles. If there are no bubbles, it indicates that the tested aluminum film balloon has good airtightness. If there are bubbles, it indicates that the tested aluminum film balloon has an airtightness problem.

[0019] The beneficial effects of the present invention compared with the prior art are:

[0020] 1. The present invention sets a pressing plate on each side of the inflating head. Before the inflating head inflates the aluminum film balloon, the two pressing plates first press the aluminum film balloon, so that the inflating head cannot fill the gas into the aluminum film balloon, and the connection between the aluminum film balloon and the inflating head is inflated and tested, avoiding the deviation of the test result due to the air leakage at the connection between the aluminum film balloon and the inflating head during the subsequent airtightness test of the aluminum film balloon, and improving the accuracy of the test result;

[0021] 2. By making the air outlet end of the inflating head vertically upward, it avoids the bending phenomenon at the connection between the aluminum film balloon and the inflating head after the aluminum film balloon is inflated. And when testing the airtightness of the aluminum film balloon, the amount of gas filled into the aluminum film balloon is the same as the lowest value of the rated inflation threshold, ensuring that the inflation amount of the aluminum film balloon during the test meets the standard and can avoid the explosion situation due to excessive inflation amount after the pressing plate presses the aluminum film balloon;

[0022] 3. By setting an inflating chamber to drive the pressing plate to move, the pressing plate presses the inflated aluminum film balloon, making it easy to detect obvious air leakage in the case of airtightness problems of the aluminum film balloon. The flexible pressing of the aluminum film balloon by the pressing plate through the inflating chamber can avoid the rupture of the inelastic aluminum film balloon due to excessive pressure;

[0023] 4. When installing the aluminum film balloon on the inflating head, the two pressing plates limit the position of the aluminum film balloon, and the inclination angle of the limited aluminum film balloon is less than 45 degrees. It avoids the damage of the aluminum film balloon due to bending after tilting. At the same time, it is also convenient for testing the airtightness of the connection between the aluminum film balloon and the inflating head. During the process of the two pressing plates pressing the aluminum film balloon, if the inclination angle of the aluminum film balloon is greater than 45 degrees, it is easy to fold and press the aluminum film balloon during the process of the two pressing plates pressing the aluminum film balloon. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional schematic diagram of the continuous airtightness detection device for aluminum film balloons of the dynamic seal detection of the present invention;

[0025] Figure 2 is a three-dimensional schematic diagram of the continuous airtightness detection device for aluminum film balloons of the dynamic seal detection of the present invention after removing the switch door;

[0026] Figure 3 is a side view of the continuous airtightness detection device for aluminum film balloons of the dynamic seal detection of the present invention;

[0027] Figure 4 is the Figure 3Schematic cross-sectional view at AA in the middle;

[0028] Figure 5 It is a cutaway perspective schematic diagram of a continuous aluminum film balloon air tightness detection device for dynamic sealing detection of the present invention;

[0029] Figure 6 The invention is a continuous aluminum film balloon air tightness detection device for dynamic sealing detection Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0030] Figure 7 The invention is a continuous aluminum film balloon air tightness detection device for dynamic sealing detection Figure 5 A partial enlarged schematic diagram of point C in the middle;

[0031] Figure 8 The invention is a continuous aluminum film balloon air tightness detection device for dynamic sealing detection Figure 5 A partial enlarged schematic diagram of point D in the middle;

[0032] Figure 9 It is a three-dimensional schematic diagram of the continuous aluminum film balloon air tightness detection device for dynamic sealing detection of the present invention after the box body is removed;

[0033] Figure 10 It is a three-dimensional schematic diagram of the continuous aluminum film balloon air tightness detection device for dynamic sealing detection of the present invention after removing the box body and the lifting unit.

[0034] The numbers in the figure are: 1. Box body; 11. Lifting unit; 12. Camera; 13. Door switch; 2. Bracket; 21. Inflating head; 22. Extrusion plate; 23. Sealing unit; 231. Clamping piece; 232. Curved silicone sheet; 233. Driving unit; 2331. Follow-up frame; 2332. Screw rod; 2333. Waterproof motor; 24. Synchronous moving unit; 241. Inflating chamber; 242. Inflating sleeve; 243. Inflating rod; 244. Pushing unit; 2441. Lifting plate; 2442. Linear drive; 2443. Connecting rod; 245. First one-way valve; 246. Second one-way valve; 247. Reversing valve; 248. Air pump; 3. Aluminum film balloon. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Reference Figures 1 - 5: Continuous aluminum film balloon airtightness detection device for dynamic seal detection, including a box body 1 with clear water stored inside and a bracket 2 arranged inside the box body 1; an inflation head 21 for inflating the aluminum film balloon 3 is arranged on the bracket 2, and a sealing unit 23 for sealing the connection between the inflation head 21 and the aluminum film balloon 3 after they are connected is also provided. Two pressing plates 22 are arranged above the bracket 2. The two pressing plates 22 are symmetrically arranged with respect to the inflation head 21, and the aluminum film balloon 3 after being connected to the inflation head 21 is located between the two pressing plates 22. When testing the tightness of the connection, the two pressing plates 22 squeeze the uninflated aluminum film balloon 3.

[0037] Most aluminum film balloons 3 have a rated inflation threshold, that is, during use, the inflation volume of the aluminum film balloon 3 needs to be maintained within the rated inflation threshold range. If the inflation is too little, the aluminum film balloon 3 will not be full. If the aluminum film balloon 3 is inflated to an overly full state, even if the aluminum film balloon 3 does not explode during inflation, it is likely to explode suddenly during use. Thus, the thickness of the aluminum film balloon 3 after inflation can be predicted. In the existing testing process, there are mainly two detection methods. One is the air pressure detection method, and the other is the water detection method. Among them, the air pressure detection method is to detect the air pressure in the aluminum film balloon 3 after filling it with air. However, as mentioned above, when the air pressure in the aluminum film balloon 3 is high, even if it does not explode during inflation, it is likely to explode when subjected to external forces after inflation, resulting in a lack of stability in the testing process. If the water detection method is used for detection, the aluminum film balloon 3 needs to be placed in water, inflated, and then observe whether there are bubbles in the water to determine whether there is a sealing problem with the aluminum film balloon 3. However, both of the above two schemes ignore the sealing problem at the connection between the aluminum film balloon 3 and the inflation head 21 when the aluminum film balloon 3 is installed on the inflation head 21. This leads to easy deviation in the detection results.

[0038] To avoid the above situation, the existing airtightness detection device is optimized. Before the airtightness detection of the aluminized film balloon 3, the airtightness detection device will autonomously detect the connection between the aluminized film balloon 3 and the inflation head 21. After detecting that the connection between the aluminized film balloon 3 and the inflation head 21 is in a sealed state, the airtightness detection device will perform a normal test on the aluminized film balloon 3, ensuring the accuracy of the test results. The specific structure and working process of the airtightness detection device are as follows: There is a water source in the box body 1. The upper part of the box body 1 is hinged with a switch door 13, and a camera 12 is arranged on the switch door 13. During the detection, the switch door 13 is closed, and the camera 12 detects the bubbles generated in the box body 1. An elevating unit 11 for driving the support 2 to move vertically is arranged in the box body 1. The elevating unit 11 adopts a threaded structure, ensuring the stability of the support 2 during lifting and lowering. The path of the support 2 when moving vertically has a highest position and a lowest position. When the support 2 is at the highest position, the support 2 is above the liquid level in the box body 1. At this time, the staff sets the aluminized film balloon 3 on the inflation head 21 and seals the connection between the aluminized film balloon 3 and the inflation head 21 through the sealing unit 23. Subsequently, the elevating unit 11 drives the support 2 to descend, and the support 2 drives the inflation head 21 and the aluminized film balloon 3 sleeved on the inflation head 21 to descend and immerse in the water. When the support 2 reaches the lowest position, the aluminized film balloon 3 is completely immersed in the water in the box body 1, and the liquid level height of the water in the box body 1 is greater than the height of the aluminized film balloon 3 in a non-bent state. In this way, during the subsequent test, if there are any sealing problems with the aluminized film balloon 3, they can all be revealed through bubbles.

[0039] During the test, first, the connection between the inflation head 21 and the aluminized film balloon 3 needs to be tested. At this time, the two pressing plates 22 completely squeeze the aluminized film balloon 3, and the inflation head 21 inflates the aluminized film balloon 3. Since the aluminized film balloon 3 is squeezed by the two pressing plates 22, the inflation head 21 cannot fill the gas into the aluminized film balloon 3. However, the air pressure at the connection between the inflation head 21 and the aluminized film balloon 3 will still increase. If the connection between the inflation head 21 and the aluminized film balloon 3 is well-sealed, no bubbles will appear. Otherwise, bubbles will appear. At this time, the support 2 rises again. After the two pressing plates 22 release the aluminized film balloon 3, the staff adjusts the aluminized film balloon 3. Subsequently, the sealing unit 23 clamps the inflation head 21 sleeved with the aluminized film balloon 3 again. Then the support 2 descends. If bubbles still appear, it is necessary to detect whether the sealing unit 23 is damaged; if no bubbles appear, the two pressing plates 22 release the aluminized film balloon 3, and then the inflation head 21 fills the aluminized film balloon 3 with a specified amount of gas. Subsequently, the two pressing plates 22 approach again and squeeze the aluminized film balloon 3 to observe whether bubbles appear. If bubbles appear, it means there is a problem with the airtightness of the aluminized film balloon 3. If not, it means the airtightness of the aluminized film balloon 3 is good. Then the support 2 rises, and the staff removes the aluminized film balloon 3 that has completed the detection.

[0040] By respectively arranging a pressing plate 22 on both sides of the inflating head 21, before the inflating head 21 inflates the aluminum film balloon 3, the two pressing plates 22 first press the aluminum film balloon 3, so that the inflating head 21 cannot fill the aluminum film balloon 3 with gas. However, the air pressure at the connection between the aluminum film balloon 3 and the inflating head 21 will continuously rise. If the sealing unit 23 does not seal the aluminum film balloon 3 and the inflating head 21 well, bubbles will appear at the connection between the aluminum film balloon 3 and the inflating head 21. After the position of the aluminum film balloon 3 is adjusted for the second time, if bubbles still appear, it indicates that there is a problem with the sealing unit 23. If no bubbles are generated during the air inflation test of the connection between the aluminum film balloon 3 and the inflating head 21, it indicates that the sealing performance of the connection is good, avoiding deviation of the test result due to air leakage at the connection between the aluminum film balloon 3 and the inflating head 21 during the subsequent airtightness test of the aluminum film balloon 3, and improving the accuracy of the test result.

[0041] Refer to Figure 4 : The air outlet end of the inflating head 21 is vertically upward.

[0042] In this way, when the inflating head 21 inflates the aluminum film balloon 3, the aluminum film balloon 3 will not float and bend due to the buoyancy generated by inflation after inflation and expansion. If the air outlet end of the inflating head 21 is vertically downward, when testing the aluminum film balloon 3, since the aluminum film balloon 3 is located below the inflating head 21, after the aluminum film balloon 3 is inflated, a bending phenomenon will occur at the connection between the aluminum film balloon 3 and the inflating head 21, which easily causes damage to the aluminum film balloon 3 during the test.

[0043] Refer to Figure 4 : When installing the aluminum film balloon 3 on the inflating head 21, the two pressing plates 22 limit the position of the aluminum film balloon 3, and the inclination angle of the aluminum film balloon 3 after limiting is less than 45 degrees.

[0044] When installing the aluminum film balloon 3 on the inflating head 21, since the air outlet of the inflating head 21 is vertically upward, after the aluminum film balloon 3 is connected to the inflating head 21, the main body of the aluminum film balloon 3 is located above the inflating head 21. And the just-installed aluminum film balloon 3 is in an uninflated state, and the main body of the aluminum film balloon 3 will inevitably be inclined. By using the two pressing plates 22 to limit the position of the aluminum film balloon 3 and making the inclination angle of the aluminum film balloon 3 less than 45 degrees, it is possible to avoid the situation where the aluminum film balloon 3 is damaged due to inclination and bending. At the same time, it is also convenient for testing the sealing performance of the connection between the aluminum film balloon 3 and the inflating head 21 in the subsequent process. During the process of the two pressing plates 22 pressing the aluminum film balloon 3, if the inclination angle of the aluminum film balloon 3 is greater than 45 degrees, it is easy for the aluminum film balloon 3 to be folded and pressed during the process of the two pressing plates 22 pressing the aluminum film balloon 3.

[0045] Reference Figure 6 : The sealing unit 23 includes two clamping members 231 symmetrically arranged with respect to the inflating head 21. The two clamping members 231 approach or move away from each other horizontally towards the inflating head 21. An arc-shaped silica gel sheet 232 is provided on the side where the two clamping members 231 approach each other. The two clamping members 231 clamp and seal the aluminum film balloon 3 sleeved on the inflating head 21 through the arc-shaped silica gel sheet 232.

[0046] Reference Figure 9 and Figure 10 : The inflation port on the aluminum film balloon 3 has a self-sealing area, and the arc-shaped silica gel sheet 232 is located within the self-sealing area when clamping the aluminum film balloon 3.

[0047] Since the inflation port on the aluminum film balloon 3 has a self-sealing area, when the arc-shaped silica gel sheet 232 clamps the aluminum film balloon 3, it is necessary to ensure that the connection between the clamping member 231 and the aluminum film balloon 3 is located within the self-sealing area of the aluminum film balloon 3. In this way, it can be avoided that when the area of the aluminum film balloon 3 outside the self-sealing area is damaged, it will not be blocked by the arc-shaped silica gel sheet 232, improving the accuracy of detection. A driving unit 233 for driving the two clamping members 231 to move is provided on the bracket 2. The driving unit 233 includes two follower frames 2331 respectively arranged on both sides of the inflating head 21. A lead screw 2332 is horizontally arranged at the lower part of the bracket 2. The lead screw 2332 sequentially penetrates the two follower frames 2331 in the horizontal direction, and the lead screw 2332 has two threads with the same length and opposite rotation directions. The two follower frames 2331 are respectively located on the two threads. A waterproof motor 2333 for driving the lead screw 2332 to rotate is provided at the end of the lead screw 2332. The clamping member 231 is arranged on the follower frame 2331. When the follower frame 2331 moves, the clamping member 231 moves synchronously with the follower frame 2331.

[0048] Reference Figures 1 - 10 : The aluminum film balloon 3 has a rated inflation threshold. When testing the sealing performance of the aluminum film balloon 3, the amount of gas filled into the aluminum film balloon 3 is the same as the lowest value of the rated inflation threshold.

[0049] By making the amount of gas filled into the aluminum film balloon 3 the same as the lowest value of the rated inflation threshold, it is ensured that the inflation amount of the aluminum film balloon 3 during the test not only meets the standard but also avoids the situation of explosion after the extrusion plate 22 extrudes the aluminum film balloon 3 due to excessive inflation amount.

[0050] Reference Figure 4 and Figure 5: A synchronous movement unit 24 for driving the two pressing plates 22 to move synchronously is further provided on the support 2. The synchronous movement unit 24 includes two inflation chambers 241 corresponding to the two pressing plates 22. An inflation sleeve 242 communicated with the inflation chamber 241 is provided below the inflation chamber 241. An inflation rod 243 is slidably arranged in the inflation sleeve 242. A pushing unit 244 respectively hinged to the two inflation rods 243 is arranged between the two inflation rods 243.

[0051] The pushing unit 244 includes a lifting plate 2441 moving in the vertical direction and a linear driver 2442 arranged at the lower part of the lifting plate 2441 for driving the lifting plate 2441 to move. A connecting rod 2443 is arranged between the inflation rod 243 and the lifting plate 2441. The two ends of the connecting rod 2443 are respectively hinged to the inflation rod 243 and the lifting plate 2441. In this way, during the lifting process of the lifting plate 2441, the moving distances of the inflation rods 243 slidably arranged in the two inflation sleeves 242 are exactly the same, so as to ensure that the air amounts filled into the inflation chambers 241 are exactly the same, thereby realizing that the two pressing plates 22 can move synchronously and at the same speed relative to each other. Furthermore, it is ensured that under the limitation of the two pressing plates 22, no matter which direction the aluminum film balloon 3 inclines, the inclination angles of the aluminum film balloon 3 are the same. The inflation chamber 241 is arranged on the follower frame 2331. An extension rod is arranged on one side of the pressing plate 22 facing the follower frame 2331. The extension rod penetrates through the follower frame 2331 and extends into the inflation chamber 241. The extension rod is in sliding fit with the inside of the inflation chamber 241.

[0052] Refer to Figures 7 - 10 : A first one-way valve 245 and a second one-way valve 246 are respectively arranged on the inflation sleeve 242. The inflation sleeve 242 is communicated with the outside through the first one-way valve 245. The second one-way valve 246 is located between the inflation chamber 241 and the inflation sleeve 242. The second one-way valve 246 allows the air in the inflation sleeve 242 to flow into the inflation chamber 241.

[0053] Refer to Figure 8 : A reversing valve 247 is arranged between the second one-way valve 246 and the inflation chamber 241. The lower part of the reversing valve 247 has two connection positions. The first one-way valve 245 is communicated with one of the connection positions. An air pump 248 is communicated with the other connection position. The air pump 248 is located outside the box body 1. The air pump 248 extracts the air in the inflation chamber 241 through the reversing valve 247.

[0054] When inflating, the lifting plate 2441 moves up and down and drives the inflating rod 243 through the connecting rod 2443. When the inflating rod 243 slides into the inflating sleeve 242, the air in the inflating sleeve 242 flows into the inflating chamber 241 through the second one-way valve 246 and the reversing valve 247. When the inflating rod 243 slides out, the outside air enters the inflating sleeve 242 through the first one-way valve 245. In this way, the two pressing plates 22 approach each other. The stroke of the lifting plate 2441 is fixed. By controlling the number of times the lifting plate 2441 moves up and down, the inflation volume can be accurately controlled, so as to control the pressure of the pressing plates 22 and avoid damaging the aluminum film balloon 3. If it is necessary to separate the two pressing plates 22, the reversing valve 247 changes its position. The air pump 248 is connected to the inflating chamber 241 through the reversing valve 247. The air pump 248 pumps out the air in the inflating chamber 241, and the air in the inflating chamber 241 is completely pumped out each time. Only in this way can it be ensured that the two pressing plates 22 can be symmetric about the inflating head 21 during the subsequent movement.

[0055] Referring Figures 1 - 10 : The present invention also relates to a continuous airtightness detection method for aluminum film balloons by dynamic seal detection, and uses a continuous airtightness detection device for aluminum film balloons by dynamic seal detection. The specific working steps are as follows:

[0056] S1. Installation: Install the aluminum film balloon 3 on the inflating head 21 and clamp and seal the connection between the aluminum film balloon 3 and the inflating head 21 through the sealing unit 23.

[0057] S2. Test the sealing condition of the connection between the aluminum film balloon 3 and the inflating head 21. The two pressing plates 22 completely clamp the aluminum film balloon 3, and at the same time the inflating head 21 inflates the aluminum film balloon 3. If there is a leakage at the connection between the aluminum film balloon 3 and the inflating head 21, the connection position between the aluminum film balloon 3 and the inflating head 21 is adjusted again. If there is still a leakage, check whether the sealing unit 23 is damaged.

[0058] S3. Test the sealing state of the aluminum film balloon 3. If there is no leakage at the connection between the inflating head 21 and the aluminum film balloon 3, the two pressing plates 22 release the aluminum film balloon 3. Then the inflating head 21 inflates the aluminum film balloon 3 with a rated amount of gas. Finally, the two pressing plates 22 squeeze towards the inflated aluminum film balloon 3 again to observe whether there are bubbles. If there are no bubbles, it means that the tested aluminum film balloon 3 has good airtightness. If there are bubbles, it means that the tested aluminum film balloon 3 has an airtightness problem.

[0059] Working principle: When conducting a test, it is first necessary to test the connection between the inflating head 21 and the aluminized film balloon 3. At this time, the two pressing plates 22 completely squeeze the aluminized film balloon 3, and the inflating head 21 inflates the aluminized film balloon 3. Since the aluminized film balloon 3 is squeezed by the two pressing plates 22, the inflating head 21 cannot fill the gas into the aluminized film balloon 3. However, the air pressure at the connection between the inflating head 21 and the aluminized film balloon 3 will still increase. If the connection between the inflating head 21 and the aluminized film balloon 3 is well-sealed, no bubbles will appear; otherwise, bubbles will appear. At this time, the support 2 rises again. After the two pressing plates 22 release the aluminized film balloon 3, the staff adjusts the aluminized film balloon 3. Subsequently, the sealing unit 23 clamps the inflating head 21 sleeved with the aluminized film balloon 3 again. Then the support 2 descends. If bubbles still occur, it is necessary to check whether the sealing unit 23 is damaged; if no bubbles occur, the two pressing plates 22 release the aluminized film balloon 3. Subsequently, the inflating head 21 fills the aluminized film balloon 3 with a specified amount of gas. Then the two pressing plates 22 approach again and squeeze the aluminized film balloon 3 to observe whether bubbles occur. If bubbles occur, it indicates that there is a problem with the airtightness of the aluminized film balloon 3; if not, it indicates that the airtightness of the aluminized film balloon 3 is good. Subsequently, the support 2 rises, and the staff removes the aluminized film balloon 3 that has completed the test.

[0060] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A continuous aluminum film balloon air tightness detection device for dynamic sealing detection, comprising a box (1) storing clean water inside and a bracket (2) arranged inside the box (1); characterized in that: An inflation head (21) for inflating the aluminum film balloon (3) is arranged on the bracket (2), and a sealing unit (23) for sealing the connection between the inflation head (21) and the aluminum film balloon (3) after the inflation head (21) and the aluminum film balloon (3) are connected. Two extrusion plates (22) are arranged above the bracket (2). The two extrusion plates (22) are symmetrically arranged with respect to the inflation head (21), and the aluminum film balloon (3) connected to the inflation head (21) is located between the two extrusion plates (22). When testing the sealing of the connection, the two extrusion plates (22) squeeze the installed but uninflated aluminum film balloon (3); the air outlet end of the inflation head (21) is vertically upward, and when the aluminum film balloon (3) is installed on the inflation head (21), the two extrusion plates (22) limit the aluminum film balloon (3).

2. The continuous aluminum film balloon air tightness detection device for dynamic sealing detection according to claim 1 is characterized in that: After being limited, the tilt angle of the aluminum film balloon (3) is less than 45 degrees.

3. The continuous aluminum film balloon air tightness detection device for dynamic sealing detection according to claim 1 is characterized in that: The sealing unit (23) comprises two clamping members (231) symmetrically arranged about the inflation head (21); the two clamping members (231) move toward or away from each other in a horizontal direction toward the inflation head (21); an arc-shaped silicone sheet (232) is arranged on one side of the two clamping members (231) where the two clamping members (231) are close to each other; the two clamping members (231) clamp and seal the aluminum film balloon (3) sleeved on the inflation head (21) through the arc-shaped silicone sheet (232).

4. The continuous aluminum film balloon air tightness detection device for dynamic sealing detection according to claim 3 is characterized in that: The inflation port on the aluminum film balloon (3) has a self-sealing area, and the arc-shaped silicone sheet (232) is located within the self-sealing area when clamping the aluminum film balloon (3).

5. The continuous aluminum film balloon air tightness detection device for dynamic sealing detection according to claim 1 is characterized in that: The aluminum film balloon (3) has a rated inflation threshold value. When testing the sealing performance of the aluminum film balloon (3), the amount of gas inflated into the aluminum film balloon (3) is the same as the lowest value of the rated inflation threshold value.

6. The continuous aluminum film balloon air tightness detection device for dynamic sealing detection according to claim 1 is characterized in that: The bracket (2) is also provided with a synchronous moving unit (24) for driving the two extrusion plates (22) to move synchronously. The synchronous moving unit (24) comprises two inflatable chambers (241) corresponding to the two extrusion plates (22). An inflatable sleeve (242) in communication with the inflatable chamber (241) is provided below the inflatable chamber (241). An inflatable rod (243) is slidably provided in the inflatable sleeve (242). A pushing unit (244) is provided between the two inflatable rods (243) and is respectively hinged to the two inflatable rods (243).

7. The continuous aluminum film balloon air tightness detection device for dynamic sealing detection according to claim 6 is characterized in that: A first one-way valve (245) and a second one-way valve (246) are respectively arranged on the inflatable sleeve (242); the inflatable sleeve (242) is connected to the outside through the first one-way valve (245); the second one-way valve (246) is located between the inflatable chamber (241) and the inflatable sleeve (242); the second one-way valve (246) allows air in the inflatable sleeve (242) to flow into the inflatable chamber (241).

8. The continuous aluminum film balloon air tightness detection device for dynamic sealing detection according to claim 7 is characterized in that: A reversing valve (247) is provided between the second one-way valve (246) and the air filling chamber (241). The lower portion of the reversing valve (247) has two connection positions. The first one-way valve (245) is connected to one of the connection positions. The other connection position is connected to an air pump (248). The air pump (248) is located outside the box body (1). The air pump (248) extracts air from the air filling chamber (241) through the reversing valve (247).

9. A method for detecting air tightness of a continuous aluminum film balloon with dynamic sealing detection, using the continuous aluminum film balloon air tightness detection device with dynamic sealing detection as claimed in any one of claims 1 to 8, characterized in that: The specific working steps are as follows: S1, installation, installing the aluminum film balloon (3) onto the inflation head (21) and clamping and sealing the connection between the aluminum film balloon (3) and the inflation head (21) through the sealing unit (23); S2. Test the sealing condition of the connection between the aluminum film balloon (3) and the inflation head (21). The two extrusion plates (22) completely clamp the aluminum film balloon (3). At the same time, the inflation head (21) inflates the aluminum film balloon (3). If there is leakage at the connection between the aluminum film balloon (3) and the inflation head (21), the connection position between the aluminum film balloon (3) and the inflation head (21) is adjusted for a second time. If there is still leakage, check whether the sealing unit (23) is damaged. S3. Test the sealing state of the aluminum film balloon (3). If there is no air leakage at the connection between the inflation head (21) and the aluminum film balloon (3), the two squeezing plates (22) loosen the aluminum film balloon (3). Then, the inflation head (21) fills the aluminum film balloon (3) with a rated amount of gas. Finally, the two squeezing plates (22) squeeze the inflated aluminum film balloon (3) again to observe whether bubbles are generated. If there are no bubbles, it means that the aluminum film balloon (3) under test has good sealing. If there are bubbles, it means that the aluminum film balloon (3) under test has a sealing problem.

Images