Non-destructive sealing container leakage detection equipment and assembly line

Abstract

The utility model belongs to the technical field of automatic leakage detection, and particularly relates to a non-destructive sealed container leakage detection device and assembly line, which comprises a main turntable, a cam push rod, a test chamber, a vacuum detection module and a cam track, the main turntable comprises an upper turntable, a middle turntable and a lower turntable which coaxially rotate; the cam track is annularly arranged between the upper turntable and the middle turntable and is higher than other positions between the feeding position and the discharging position of the main turntable; the upper end of the cam push rod is connected between the upper turntable and the middle turntable and is in sliding fit with the cam track; the test chamber is pressed on the lower turntable when being at a low position; and the vacuum detection module is arranged on the main turntable and is communicated with the test chamber. Compared with the prior art, the utility model solves the problems of complex structure and inaccurate detection result of a non-destructive detection device in a sealed container detection mode in the prior art, realizes the structure simplification of the detection equipment, and also can realize longer-time leakage detection in a rotation period.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic leakage detection, and in particular relates to non-destructive sealed container leakage detection equipment and an assembly line. Background Art

[0002] After the sealed container is filled, it is usually necessary to test its air tightness and check for leakage defects such as microcracks and micropores. At present, there is no fast, stable and reliable method and equipment for industrial sites. The usual detection method is to rely on manual visual inspection, or to observe whether there is leakage after filling. The means are backward and unreliable. In modern industrial production, there are application cases of using airtight detection machines to blow air into sealed containers. Sealed containers with cracks may be blown up. This method has the disadvantages of noise pollution and low detection sensitivity. In addition, there are also discharge detection, laser detection, and material concentration detection. Discharge detection requires additional filling of conductive media, which is a complicated process. The accuracy of laser detection is easily affected by the background material concentration. The material concentration detection has the disadvantage of low efficiency. Each has its own limitations and cannot meet the requirements of high-speed, stable, and large-scale production.

[0003] CN116735116A discloses a vacuum leak detector for bottled products, comprising a frame, a vacuum pump is arranged beside the frame, a main turret, a multi-stage driving device, a bottle inlet star wheel, and a bottle outlet star wheel are respectively arranged on the frame, and the multi-stage driving device is respectively connected to the main turret, the bottle inlet star wheel, and the bottle outlet star wheel in driving connection, a mesh chain belt is arranged beside the main turret, the bottle inlet star wheel and the bottle outlet star wheel are distributed along the mesh chain belt, a bottle inlet screw is located beside the bottle inlet star wheel, and the bottle inlet screw is arranged on the screw driving device, an arc cam is arranged above the main turret and fixed to the outer cover, and the arc cam corresponds to the bottle inlet star wheel and the bottle outlet star wheel, a plurality of lower mold mechanisms distributed in a circle are arranged on the main turret, an upper mold mechanism corresponds to the upper side of each lower mold mechanism, the upper mold mechanism and the lower mold mechanism form a leak detection sealing cavity, each leak detection sealing cavity is respectively connected to a leak detection mechanism, and each leak detection mechanism is respectively connected to the vacuum pump. In this scheme, the upper mold mechanism and the lower mold mechanism jointly clamp the packaging bottle and combine with a vacuum pump to realize the leakage detection of the packaging bottle. The nitrogen spring, rolling bearing and other complex structures arranged inside the upper mold rod are used to realize the lifting and lowering of the upper mold mechanism. It has defects such as complex structure and difficult maintenance. In addition, this scheme can only measure the sealing condition of the container in a short period of time, and it is difficult to detect some minor leaks.

[0004] CN113910627A discloses a handle-mounting machine and a handle-mounting method, including a bottle-input screw, a bottle-input star wheel, a main turntable, a bottom support, a bottle-turning positioning mechanism, a lifting slide, a handle box, a handle-mounting cam and a handle detection mechanism, wherein the bottle-input screw is arranged on one side of the bottle-input star wheel, the main turntable is arranged on the side of the bottle-input star wheel, the bottom support is arranged on the main turntable, the bottle-turning positioning mechanism is arranged on the side of the bottle-input star wheel, the lifting slide is arranged above the main turntable, the handle box is arranged below the lifting slide, and the handle-mounting cam and the handle detection mechanism are arranged on the side of the main turntable. Although this scheme also adopts the structure of turntable + star wheel loading and unloading, its main function is to install the handle, and the container therein is not leak-checked.

[0005] In summary, based on the defects of the prior art, there is a need to provide a non-destructive leak detection device for a sealed container that has a simple structure and is easy to maintain. Utility Model Content

[0006] The purpose of the present utility model is to provide a non-destructive sealed container leakage detection device and production line in order to solve at least one of the above problems, so as to solve the problem that the non-destructive detection device in the sealed container detection method in the prior art has a complex structure and the detection result is not accurate enough. This solution realizes the simplification of the structure of the detection equipment, and can also realize a longer time leakage detection within a rotation cycle, with high accuracy and fast detection speed, which greatly improves the production efficiency.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] The first aspect of the utility model discloses a non-destructive sealed container leakage detection device, which is used for sealing detection of sealed containers, and comprises a main turntable, a cam push rod, a test chamber, a vacuum detection module and a cam track;

[0009] The main turntable comprises an upper turntable, a middle turntable and a lower turntable which rotate coaxially;

[0010] The cam track is circumferentially arranged between the upper turntable and the middle turntable, and the height of the cam track between the feeding and the discharging on the main turntable is higher than the height at other positions;

[0011] The upper end of the cam push rod is connected between the upper turntable and the middle turntable and slidably cooperates with the cam track, and the lower end of the cam push rod is connected to the test chamber;

[0012] When the test chamber is in the low position, the test chamber is pressed onto the lower turntable to form a closed cavity for accommodating a sealed container;

[0013] The vacuum detection module is arranged on the main turntable and communicated with the test chamber, and is used to form a vacuum environment outside the sealed container.

[0014] Preferably, a plurality of cam push rods are arranged at intervals along the circumference of the main turntable, and a test chamber is independently provided at the lower end of each cam push rod, and each test chamber is correspondingly provided with an independent vacuum detection module.

[0015] Preferably, a plurality of cam push rods are arranged at intervals along the circumference of the main turntable, at least 20, usually 20-50, or more.

[0016] Preferably, 25 cam push rods are arranged at intervals along the circumference of the main turntable.

[0017] Preferably, a sealing member is provided on the surface of the lower turntable, and the test chamber is pressed onto the sealing member when the test chamber is in a low position.

[0018] Preferably, a sealing groove is provided on the surface of the lower turntable, and the sealing member is assembled in the sealing groove.

[0019] Preferably, the sealing element is an O-ring.

[0020] Preferably, a roller is provided at the upper end of the cam push rod for slidingly cooperating with the cam track; the lower end of the cam push rod is connected to the test chamber via an elastic member for achieving the pressing of the test chamber and the lower turntable.

[0021] Preferably, the elastic member is a spring.

[0022] Preferably, a relative pressure sensor is provided inside the vacuum detection module.

[0023] The second aspect of the utility model discloses a non-destructive sealed container leakage detection line, comprising a material conveyor, any of the above detection devices, a rejection conveyor, a feed star wheel, a discharge star wheel and a flexible rejection mechanism;

[0024] The material conveyor is connected to the inlet and outlet of the detection device through the inlet star wheel and the outlet star wheel respectively, and is used to convey the sealed containers to be detected to the material conveyor and convey the sealed containers that have passed the detection to the outside;

[0025] The reject conveyor is arranged downstream of the discharging star wheel, and the reject conveyor is parallel to the material conveyor and arranged on one side of the material conveyor;

[0026] The flexible rejection mechanism is arranged on the other side of the material conveyor, and is used to reject the sealed containers that have not passed the inspection from the material conveyor to the rejection conveyor.

[0027] Preferably, the feed star wheel and the discharge star wheel rotate synchronously with the main turntable, and the feed star wheel and the discharge star wheel are meshed with the main turntable through a sealed container.

[0028] Preferably, the assembly line further comprises a feeding screw, which rotates synchronously with the main turntable and is used to guide and control the spacing between the sealed containers to be inspected.

[0029] The third aspect of the utility model discloses a non-destructive sealed container leakage detection method, which uses any of the above-mentioned detection devices for detection;

[0030] The detection method comprises:

[0031] The test chamber falls and seals the sealed container to be tested inside the sealed chamber. The vacuum detection module applies a vacuum environment of a certain vacuum degree to the inside of the sealed chamber to detect the change of the vacuum degree of the test chamber within one rotation cycle.

[0032] Determine the change in vacuum degree. If the change in vacuum degree exceeds a preset value, the sealed container has leakage. If the change in vacuum degree is within the preset value, the sealed container has no leakage.

[0033] After the test is completed, the vacuum test module breaks the vacuum in the test chamber, the test chamber rises, and the sealed container that has been tested is processed according to the test results.

[0034] Preferably, the method for determining the change in vacuum degree is: detecting the vacuum degree of the test chamber twice at intervals, calculating the difference delta between the first reading and the second reading, and determining according to the following method a) or b):

[0035] a) Simple algorithm: If delta ≤ the set value, the sealed container does not leak; if delta > the set value, the sealed container does leak;

[0036] b) Adaptive algorithm: If the average value of delta-delta is ≤ the set value, then there is no leakage in the sealed container; if the average value of delta-delta is > the set value, then there is leakage in the sealed container; where the average value of delta is the average value of the difference in each previous detection process.

[0037] Preferably, the 5th and 6th stations after the main turntable is fed into the material, and is set as the vacuum starting position; the 3rd and 4th stations after the vacuum starting position, and is set as the first vacuum reading position; the 1st and 2nd stations after the first vacuum reading position, and is set as the vacuum stopping position; the 6th and 7th stations before the main turntable is discharged from the material, and is set as the second vacuum reading position; the 5th and 6th stations before the main turntable is discharged from the material, and is set as the vacuum breaking position; that is, vacuuming is started between the 5th and 6th stations after the main turntable is fed into the material; the first vacuum reading is carried out between the 3rd and 4th stations after vacuuming, and is used to detect the vacuum degree of the test chamber after the vacuum is stabilized; between the 1st and 2nd stations after the first vacuum reading, vacuuming is stopped, and sealed container leakage detection is started; between the 6th and 7th stations before the main turntable is discharged from the material, and is used to detect the vacuum degree of the test chamber after a delay of a period of time; and vacuum breaking is performed between the 5th and 6th stations before the main turntable is discharged from the material.

[0038] The working principle of the utility model is:

[0039] A sealed container is placed on the lower turntable and rotates with the lower turntable. The sealed container can be sealed in the test chamber by the cam push rod, and the vacuum detection module applies an appropriate level of vacuum outside the sealed container; the vacuum degree change of the test chamber within a rotation cycle is detected, and when the vacuum degree change exceeds the preset value, the control system will determine that there is a leak in the sealed container; after the detection, the vacuum of the test chamber is broken through the vacuum pipeline, the cam push rod raises the test chamber, and the intact sealed container is output to the material conveyor, and the leaking sealed container is rejected by the flexible rejection mechanism to the rejection conveyor.

[0040] Compared with the prior art, the utility model has the following beneficial effects:

[0041] This solution performs leakage detection on the sealed container by forming a certain vacuum environment outside the container, which is non-destructive and avoids damage to the detection equipment due to breakage or explosion of the sealed container during the test. At the same time, through the path planning of the test chamber by the cam track, the use of elastic parts between the cam push rod and the test chamber, and the setting of the seal on the lower turntable, the test chamber can form a closed cavity with a stable structure and good sealing performance between the lower turntable when it is in a low position, thereby ensuring the reliability of the test and the simplicity of the overall structure.

[0042] During the test process of this scheme, two vacuum readings are taken before and after, and the difference between the two readings is calculated to determine whether the sealed container has leakage. This method can test whether the sealed container has leakage over a long period of time, effectively avoiding the possibility that some minor leaks are ignored and detected due to a short test time. In addition, the vacuum start position is set near the feed star wheel to ensure that the test chamber is fully sealed; the first vacuum reading is separated from the vacuum start position to stabilize the vacuum degree of the test chamber; the second vacuum reading is far away from the first vacuum reading to improve the detection sensitivity.

[0043] This detection method has high accuracy and fast detection speed, which greatly improves production efficiency.

[0044] Compared with the prior art (CN116735116A), in which both the main power and the bottle feeding mechanism use servo motors, which increases the cost and structural complexity, only one AC reduction motor is used in this solution; the prior solution uses a nitrogen spring, which has the disadvantages of complex structure, easy leakage, and high cost, and the elastic force of the nitrogen spring is easily affected by air pressure and temperature. The present solution uses a metal spring, which has low cost and is conducive to the long-term stable operation of the equipment; the multi-stage drive device used in the prior solution has a complex structure, and only one AC reduction motor provides all the power in this solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of a top view of the structural section of the detection equipment;

[0046] Figure 2 It is a schematic diagram of the front view structure of the detection equipment;

[0047] In the figure: 1-main turntable; 2-cam push rod; 3-test chamber; 4-vacuum detection module; 5-material conveyor; 6-rejection conveyor; 7-feed screw; 8-feed star wheel; 9-discharge star wheel; 10-flexible rejection mechanism; 11-vacuum start position; 12-first vacuum reading position; 13-second vacuum reading position; 14-vacuum stop position; 15-vacuum breaking position; 16-cam track; 17-cam guide support column; 18-sealed container. DETAILED DESCRIPTION

[0048] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] Example 1

[0050] A non-destructive sealed container 18 leakage detection device, used for sealing detection of the sealed container 18, comprises a main turntable 1, a cam push rod 2, a test chamber 3, a vacuum detection module 4 and a cam track 16;

[0051] The main turntable 1 comprises an upper turntable, a middle turntable and a lower turntable which rotate coaxially;

[0052] The cam track 16 is circumferentially arranged between the upper turntable and the middle turntable, and the height of the cam track 16 between the feeding and the discharging on the main turntable 1 is higher than the height at other positions;

[0053] The upper end of the cam push rod 2 is connected between the upper turntable and the middle turntable and is slidably matched with the cam track 16, and the lower end of the cam push rod 2 is connected to the test chamber 3;

[0054] When the test chamber 3 is in the low position, the test chamber 3 is pressed onto the lower turntable to form a closed cavity for accommodating the sealed container 18;

[0055] The vacuum detection module 4 is disposed on the main turntable 1 and communicated with the test chamber 3 , and is used to form a vacuum environment outside the sealed container 18 .

[0056] A non-destructive sealed container 18 leakage detection line, such as Figure 1 , 2 As shown, it includes a material conveyor 5, the detection equipment as described above, a rejection conveyor 6, a feed star wheel 8, a discharge star wheel 9 and a flexible rejection mechanism 10;

[0057] The material conveyor 5 is connected to the inlet and outlet of the detection device through the inlet star wheel 8 and the outlet star wheel 9, respectively, for conveying the sealed container 18 to be detected to the material conveyor 5 and conveying the sealed container 18 that has passed the detection to the outside;

[0058] The reject conveyor 6 is arranged downstream of the discharging star wheel 9, and the reject conveyor 6 is parallel to the material conveyor 5 and arranged on one side of the material conveyor 5;

[0059] The flexible rejection mechanism 10 is disposed on the other side of the material conveyor 5 , and is used to reject the sealed containers 18 that have failed the inspection from the material conveyor 5 to the rejection conveyor 6 .

[0060] as well as,

[0061] A non-destructive method for detecting leakage of a sealed container 18, using the detection device as described above for detection;

[0062] The detection method comprises:

[0063] The test chamber 3 falls and seals the sealed container 18 to be tested inside the sealed chamber. The vacuum detection module 4 applies a vacuum environment of a certain vacuum degree to the inside of the sealed chamber to detect the change of the vacuum degree of the test chamber 3 within one rotation cycle.

[0064] Determine the change in vacuum degree. If the change in vacuum degree exceeds a preset value, the sealed container 18 has leakage. If the change in vacuum degree is within the preset value, the sealed container 18 has no leakage.

[0065] After the detection is completed, the vacuum detection module 4 breaks the vacuum in the test chamber 3, the test chamber 3 rises, and the sealed container 18 that has completed the detection is processed according to the detection result.

[0066] More specifically, in this embodiment:

[0067] The testing equipment, such as Figure 2 As shown in FIG, the main turntable 1 , the cam push rod 2 , the test chamber 3 , the vacuum detection module 4 and the cam track 16 are together constituted.

[0068] The main turntable 1 comprises an upper turntable, a middle turntable and a lower turntable which rotate coaxially and are driven by the same power device.

[0069] The cam track 16 is arranged between the upper turntable and the middle turntable through the cam guide support column 17, and the cam track 16 is a continuous annular track, and its height between the feed and discharge of the main turntable 1 is higher than that at other positions, forming a track form of a small hill.

[0070] The upper end of the cam push rod 2 is connected between the upper turntable and the middle turntable, and a roller is provided on the upper end of the cam push rod 2, which can slide with the cam track 16, so that the cam push rod 2 will also run along the designed route of the cam track 16 during the process of following the rotation of the main turntable 1. The lower end of the cam push rod 2 is connected to the test chamber 3 through a spring, so that the downward pressure of the test chamber 3 has a certain flexible adjustable range.

[0071] The test chamber 3 rises and falls with the rise and fall of the cam follower 2 on the cam track 16. When the test chamber 3 is in the low position, it is directly pressed on the lower turntable to form a closed cavity inside it. The sealed container 18 is placed on the lower turntable and sealed inside the closed cavity. A sealing groove is also provided on the lower turntable corresponding to the pressing position of the test chamber 3. The inside of the sealing groove is filled with a sealing member, such as an O-ring, so that a sealed closed cavity with reliable sealing is further formed after the test chamber 3 is pressed down.

[0072] The vacuum detection module 4 is mounted on the main turntable 1 and is connected to the test chamber 3 through a vacuum pipe. It is used to apply an appropriate level of vacuum in the closed cavity to form a vacuum test environment and break the vacuum after the subsequent test is completed. A relative pressure sensor is provided in the vacuum detection module 4, which has high sensitivity and can be used to accurately measure the change of the vacuum degree in the closed cavity.

[0073] In this embodiment, if Figure 1 and 2As shown, there are 25 cam push rods 2, test chambers 3 and vacuum detection modules 4, which are arranged at equal intervals along the circumference of the main turntable 1. Each group of cam push rods 2, test chambers 3 and vacuum detection modules 4 is independently arranged and can be controlled and detected separately.

[0074] When the detection equipment is detecting, the cam track 16 is designed to be at a higher height between the feed and the discharge, so that the normal rotation of the main turntable 1 can drive the test chamber 3 to rise and fall, and then automatically put the sealed container 18 placed on the lower turntable into the closed cavity; an appropriate level of vacuum (determined by the test requirements) is applied to the closed cavity through the vacuum detection module 4, so as to implement leakage detection of the sealed container 18 within a rotation cycle through the change of vacuum degree, and when the vacuum degree change exceeds the preset value, it is determined that the sealed container 18 has a leak; after the detection is completed, the vacuum of the test chamber 3 is broken again by the vacuum detection module 4, and the cam push rod 2 is driven by the cam track 16 to lift the test chamber 3 near the discharge position, so that the sealed container 18 after the detection can be taken out.

[0075] The detection method is as follows: the test chamber 3 falls and seals the sealed container 18 to be detected inside the sealed cavity, the vacuum detection module 4 applies a vacuum environment of a certain vacuum degree to the inside of the sealed cavity, and detects the change in the vacuum degree of the test chamber 3 within a rotation cycle; the vacuum degree change is judged, if the vacuum degree change exceeds a preset value, there is leakage in the sealed container 18, if the vacuum degree change is within the preset value, there is no leakage in the sealed container 18; after the detection is completed, the vacuum detection module 4 breaks the vacuum in the test chamber 3, the test chamber 3 rises, and the sealed container 18 that has been tested is processed according to the detection result. Specifically: In this embodiment, the 5th and 6th stations after the main turntable 1 is fed are designed as the vacuum start position 11, and vacuuming is started; the 3rd and 4th stations after vacuuming are designed as the first vacuum reading position 12, and the first vacuum reading is implemented to detect the vacuum degree of the test chamber 3 after the vacuum is stabilized; the 1st and 2nd stations after the first vacuum reading are designed as the vacuum stop position 14, and the vacuuming is stopped to start the leakage detection of the sealed container 18; the 6th and 7th stations before the main turntable 1 is discharged are designed as the second vacuum reading position 13, and the second vacuum reading is implemented to detect the vacuum degree of the test chamber 3 after a delay for a period of time; the 5th and 6th stations before the main turntable 1 is discharged are designed as the vacuum breaking position 15, and the vacuum breaking is performed. The vacuum starting position 11 is set near the feeding star wheel 8 to ensure that the test chamber 3 is fully sealed; the first vacuum reading is spaced from the vacuum starting position 11 to stabilize the vacuum degree of the test chamber 3; the second vacuum reading is far away from the first vacuum reading to improve the detection sensitivity.

[0076] In the above detection method, the method for judging whether the vacuum degree change meets the preset value is: the vacuum degree of the test chamber 3 is detected twice at intervals, the difference delta between the first reading and the second reading is calculated, and the judgment is made according to the following method a) or b):

[0077] a) Simple algorithm: if delta≤set value, then there is no leakage in the sealed container 18; if delta>set value, then there is leakage in the sealed container 18;

[0078] b) Adaptive algorithm: If the average value of delta-delta is ≤ the set value, there is no leakage in the sealed container 18; if the average value of delta-delta is > the set value, there is leakage in the sealed container 18; wherein the average value of delta is the average value of the difference in each previous detection process.

[0079] The detection equipment can be integrated into the detection line, such as Figure 1 , 2 As shown, the assembly line includes a material conveyor 5, a rejecting conveyor 6, a feed screw 7, a feed star wheel 8, a discharge star wheel 9 and a flexible rejecting mechanism 10 as well as the above-mentioned detection equipment.

[0080] With the detection equipment as the center, the material conveyor 5 is connected to the feed and discharge of the detection equipment through the feed star wheel 8 and the discharge star wheel 9, respectively, which are used to transport the sealed containers 18 to be inspected to the detection equipment and to transport the sealed containers 18 that have passed the inspection to the downstream process; the feed star wheel 8 and the discharge star wheel 9 keep synchronous rotation with the main turntable 1, and can form a meshing form through the sealed container 18 to ensure the normal and orderly loading and unloading of materials.

[0081] A rejection conveyor 6 is arranged parallel to the material conveyor 5, on one side of the material conveyor 5 and downstream of the discharge star wheel 9; a flexible rejection mechanism 10 is arranged on the other side of the material conveyor 5 and downstream of the discharge star wheel 9. Through the arrangement of the flexible rejection mechanism 10, the sealed containers 18 that do not meet the sealing performance requirements can be rejected from the material conveyor 5 to the rejection conveyor 6, and each is transported to the next process.

[0082] A feed screw 7 is arranged parallel to the material conveyor 5 on one side of the material conveyor 5 and upstream of the feed star wheel 8. The feed screw 7 also rotates synchronously with the main turntable 1, thereby controlling the feeding speed to be consistent with the detection speed and effectively controlling the distance between adjacent sealed containers 18.

[0083] The feed screw 7 and the feed star wheel cooperate with the main turntable 1 to input the material into the sealed container 18, and the power of the feed screw 7 and the feed star wheel 8 can both come from the main turntable 1; the discharge star wheel 9 cooperates with the main turntable 1 to output the material, and the power of the discharge star wheel 9 can come from the main turntable 1.

[0084] The flexible rejection mechanism 10 may adopt a specific structure disclosed in the prior art, and can meet the working requirement of being able to reject the sealed containers 18 that do not meet the sealing performance requirements from the material conveyor 5 to the rejection conveyor 6.

[0085] The testing line and testing equipment as a whole are controlled by a PLC control system to complete the testing algorithm, data processing and equipment regulation.

[0086] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A non-destructive sealed container leakage detection device, used for sealing detection of a sealed container (18), characterized in that: It comprises a main turntable (1), a cam push rod (2), a test chamber (3), a vacuum detection module (4) and a cam track (16); The main turntable (1) comprises an upper turntable, a middle turntable and a lower turntable which rotate coaxially; The cam track (16) is circumferentially arranged between the upper turntable and the middle turntable, and the height of the cam track (16) between the feeding and the discharging on the main turntable (1) is higher than the height at other positions; The upper end of the cam push rod (2) is connected between the upper turntable and the middle turntable and is slidably matched with the cam track (16); the lower end of the cam push rod (2) is connected to the test chamber (3); When the test chamber (3) is in a low position, the test chamber (3) is pressed onto the lower turntable to form a closed cavity for accommodating a sealed container (18); The vacuum detection module (4) is arranged on the main turntable (1) and is connected to the test chamber (3) to form a vacuum environment outside the sealed container (18).

2. A non-destructive sealed container leakage detection device according to claim 1, characterized in that: A plurality of cam push rods (2) are arranged at intervals along the circumference of the main turntable (1), and a test chamber (3) is independently arranged at the lower end of each cam push rod (2), and each test chamber (3) is correspondingly provided with an independent vacuum detection module (4).

3. A non-destructive sealed container leakage detection device according to claim 1, characterized in that: The surface of the lower turntable is provided with a sealing member, and the test chamber (3) is pressed onto the sealing member when it is in a low position.

4. A non-destructive sealed container leakage detection device according to claim 1, characterized in that: The upper end of the cam push rod (2) is provided with a roller for slidingly cooperating with the cam track (16); the lower end of the cam push rod (2) is connected to the test chamber (3) via an elastic member for achieving the pressing of the test chamber (3) and the lower turntable.

5. The non-destructive sealed container leakage detection device according to claim 1, characterized in that: A relative pressure sensor is provided inside the vacuum detection module (4).

6. The non-destructive sealed container leakage detection device according to claim 1, characterized in that: A plurality of cam push rods (2) are arranged at intervals along the circumference of the main rotating disk (1).

7. The non-destructive sealed container leakage detection device according to claim 1, characterized in that: The 5th and 6th stations after the main turntable (1) feeds in materials are set as a vacuum start position (11); the 3rd and 4th stations after the vacuum start position (11) are set as a first vacuum reading position (12); the 1st and 2nd stations after the first vacuum reading position (12) are set as a vacuum stop position (14); the 6th and 7th stations before the main turntable (1) discharges materials are set as a second vacuum reading position (13); and the 5th and 6th stations before the main turntable (1) discharges materials are set as a vacuum breaking position (15).

8. A non-destructive sealed container leakage detection line, characterized in that: It comprises a material conveyor (5), a detection device as claimed in any one of claims 1 to 7, a rejection conveyor (6), a feed star wheel (8), a discharge star wheel (9) and a flexible rejection mechanism (10); The material conveyor (5) is connected to the inlet and outlet of the detection device through the inlet star wheel (8) and the outlet star wheel (9), respectively, and is used to convey the sealed containers (18) to be detected to the material conveyor (5) and to convey the sealed containers (18) that have passed the detection to the outside; The reject conveyor (6) is arranged downstream of the discharge star wheel (9), and the reject conveyor (6) is parallel to the material conveyor (5) and arranged on one side of the material conveyor (5); The flexible rejection mechanism (10) is arranged on the other side of the material conveyor (5) and is used to reject the sealed containers (18) that have failed the inspection from the material conveyor (5) to the rejection conveyor (6).

9. A non-destructive sealed container leakage detection line according to claim 8, characterized in that: The feed star wheel (8) and the discharge star wheel (9) rotate synchronously with the main turntable (1).

10. The non-destructive sealed container leakage detection line according to claim 8, characterized in that: The assembly line further comprises a feeding screw (7), which rotates synchronously with the main turntable (1) and is used to guide and control the spacing between the sealed containers (18) to be inspected.

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