Strip-shaped packaging bag leak detection device

Abstract

The utility model discloses a strip-shaped packaging bag leak detection device, which relates to the technical field of medical instruments and comprises an annular conveying belt mounted on a frame body, and a material receiving station, a sealing detection station and a blanking and waste material removing station which are sequentially arranged along the conveying direction of the annular conveying belt, a material input station is arranged at the end, close to the material receiving station, of the annular conveying belt, a material output station is arranged at the end, close to the discharging and waste removing station, of the annular conveying belt, and the material input station is used for collecting materials conveyed by front-end equipment and pushing the materials into a first material box die cavity of the material receiving station. The first material box die cavity moves along with the annular conveying belt so as to convey materials to the sealing detection station for sealing leakage detection, and the first material box die cavity continues to move to the discharging and waste removing station after passing through the sealing detection station so as to remove the materials or transfer the materials to the material output station. By means of the arrangement, automatic feeding and discharging of materials, sealing performance detection and rejecting of unqualified products can be achieved, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a leak detection device for strip-shaped packaging bags. Background Technology

[0002] Strip-shaped packaging bags, with their unique appeal such as their slender shape, ease of carrying, high material utilization, elegant and smooth tear lines, clean and efficient pouring without spillage, and ability to enable high-speed, unmanned automated boxing, are widely used in the pharmaceutical, dairy, and health product industries. Strip-shaped packaging bags (hereinafter referred to as strip bags) can reduce packaging material costs, reduce processes, and improve production efficiency; ensure consumer medication safety and provide a better consumer experience; and at the same time, simplify logistics and reduce logistics costs for pharmaceutical companies.

[0003] Products that are fused together should undergo 100% seal integrity testing during production. Currently, no automated equipment suitable for leak detection of strip packages has been found. Most existing leak detection equipment is instrumental and offline sampling testing, which requires manual loading and unloading, resulting in slow speed, low efficiency, easy fatigue, and unstable test results.

[0004] Therefore, how to provide a strip-shaped packaging bag leak detection device that can realize automatic material loading and unloading, seal detection, and rejection of defective products, thereby improving production efficiency and adapting to factory assembly line production, is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a strip-shaped packaging bag leak detection device that can realize automatic material loading and unloading, sealing detection, and rejection of defective products, thereby improving production efficiency and adapting to factory assembly line production.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A leak detection device for strip-shaped packaging bags includes: an annular conveyor belt installed on a frame; a material receiving station, a sealing detection station, and a material unloading and waste removal station arranged sequentially along the conveying direction of the annular conveyor belt; a material input station is provided at one end of the annular conveyor belt near the material receiving station; and a material output station is provided at the end of the annular conveyor belt near the material unloading and waste removal station. The material input station is used to collect the material conveyed by the front-end equipment and push the material into the first material box cavity of the material receiving station. The first material box cavity moves with the annular conveyor belt to transport the material to the sealing detection station for sealing leak detection. After passing the sealing detection station, the first material box cavity continues to move to the material unloading and waste removal station for material removal or transfer to the material output station.

[0008] Preferably, the first material box cavity is floatingly and elastically connected to the annular conveyor belt, and the bottom sides of the first material box cavity are connected to the annular conveyor belt by springs.

[0009] Preferably, the sealing inspection station includes:

[0010] The first cylinder is vertically mounted on the frame and is located below the mold cavity of the first material box;

[0011] The first push plate is installed on the movable end of the first cylinder and is used to push the first material box cavity upward;

[0012] The sealing box is located above the first material box mold cavity and is positioned opposite to the first push plate. The sealing box is used to cover the first material box mold cavity to seal it.

[0013] Preferably, the sealing box is a square box with an opening on the bottom, and a flexible sealing ring is provided at the bottom edge of the sealing box.

[0014] As a preferred option, the unloading and waste removal station includes:

[0015] The second cylinder is located above the mold cavity of the first material box;

[0016] The second push plate is installed on the movable end of the second cylinder, and the second push plate can extend into the mold cavity of the first material box to push out the material.

[0017] Preferably, the frame is equipped with a rotatable transition platform that connects the unloading and waste removal station with the material output station, and a collection box is placed below the transition platform.

[0018] Preferably, the material receiving station is also provided with a second material box cavity and a third material box cavity, with the first material box cavity, the second material box cavity and the third material box cavity being spaced apart.

[0019] Preferably, the first material box mold cavity is driven by a first servo motor, the second material box mold cavity is driven by a second servo motor, and the third material box mold cavity is driven by a third servo motor.

[0020] Preferably, the first, second, and third material box cavities are all detachably mounted on the annular conveyor belt.

[0021] Preferably, a purging and drying station is provided below the circular conveyor belt for cleaning and drying the first, second, and third material box cavities that it passes through.

[0022] Compared with the above-mentioned background technology, the present invention provides a strip-shaped packaging bag leak detection device, including: an annular conveyor belt installed on the frame, a material receiving station, a sealing detection station, and a material unloading and waste removal station arranged sequentially along the conveying direction of the annular conveyor belt, a material input station is provided at one end of the annular conveyor belt near the material receiving station, and a material output station is provided at the end of the annular conveyor belt near the material unloading and waste removal station. The material input station is used to collect the material conveyed by the front-end equipment and push the material into the first material box cavity of the material receiving station. The first material box cavity moves with the annular conveyor belt to transport the material to the sealing detection station for sealing leak detection. After passing the sealing detection station, the first material box cavity continues to move to the material unloading and waste removal station to remove the material or transfer it to the material output station.

[0023] Specifically, a circular conveyor belt is installed on the frame, and along the conveying direction of the circular conveyor belt are set up a material receiving station, a sealing inspection station, and a material unloading and waste removal station. A material input station is located to one side of the material receiving station, and a material output station is located to one side of the waste removal station. The material input station handles multiple incoming materials from the front-end equipment. Materials are processed here, and when the material box at the material input station is full, and the material box is aligned with the first material box cavity located at the material receiving station, the material is pushed into the first material box cavity by a dedicated feeding cylinder. The material box cavity moves forward with the circular conveyor belt, leaving the material receiving station and entering the sealing inspection station. Here, the first material box cavity is sealed and the material inside is leak-tested. After the inspection is completed, the first material box cavity enters the unloading and waste removal station. The qualified material in the first material box cavity is pushed into the material output station for unloading, while the unqualified material is rejected. This setting can realize automatic material loading and unloading, sealing inspection and rejection of unqualified products, improve production efficiency, reduce manual labor load, and is more suitable for factory assembly line production. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the strip-shaped packaging bag leak detection device provided in an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 Top view;

[0027] Figure 3This is a front view of the material provided in an embodiment of the present utility model;

[0028] Figure 4 This is a side view of the material provided in an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the sealing inspection station structure provided in an embodiment of the present utility model;

[0030] Figure 6 This is a bottom view of the sealing box body provided in an embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the material feeding and waste removal station structure provided in an embodiment of the present utility model;

[0032] Figure 8 This is a simplified structural diagram of another embodiment of the present invention.

[0033] in:

[0034] 01-Frame, 02-Circular conveyor belt, 03-Material receiving station, 04-Sealing inspection station, 05-Unloading and waste removal station, 06-Material input station, 07-Material output station, 08-Material, 09-First material box cavity, 10-Spring, 11-First cylinder, 12-First push plate, 13-Sealed box body, 14-Sealing ring, 15-Second cylinder, 16-Second push plate, 17-Transition platform, 18-Collection box, 19-Second material box cavity, 20-Third material box cavity, 21-First servo motor, 22-Second servo motor, 23-Third servo motor, 24-Purge and drying station. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0038] The purpose of this invention is to provide a strip-shaped packaging bag leak detection device that can realize automatic material loading and unloading, sealing detection, and rejection of defective products, thereby improving production efficiency and adapting to factory assembly line production.

[0039] To achieve the above objectives, the present invention provides the following technical solution:

[0040] Please see Figures 1 to 7 This embodiment provides a strip-shaped packaging bag leak detection device, including: an annular conveyor belt 02 installed on the frame 01, a material receiving station 03, a sealing detection station 04, and a material unloading and waste removal station 05 arranged sequentially along the conveying direction of the annular conveyor belt 02. A material input station 06 is provided at one end of the annular conveyor belt 02 near the material receiving station 03, and a material output station 07 is provided at the end of the annular conveyor belt near the material unloading and waste removal station 05. The material input station 06 is used to collect the material 08 conveyed by the front-end equipment and push the material 08 into the first material box cavity 09 of the material receiving station 03. The first material box cavity 09 moves with the annular conveyor belt 02 to transport the material 08 to the sealing detection station 04 for sealing leak detection. After passing the sealing detection station 04, the first material box cavity 09 continues to move to the material unloading and waste removal station 05 to remove the material 08 or transfer it to the material output station 07.

[0041] In other words, the circular conveyor belt 02 is installed on the frame 01, and along the conveying direction of the circular conveyor belt 02, there are a material receiving station 03, a sealing inspection station 04, and a material unloading and waste removal station 05. A material input station 06 is located on one side of the material receiving station 03, and a material output station 07 is located on one side of the waste removal station. The material input station 06 is used to process multiple incoming materials from the front-end equipment. The material 08 is sorted here. When the material box at the material input station 06 is full, and at this time the material box is exactly aligned with the material receiving station 03... After the first material box cavity 09 is aligned, the material 08 is pushed into the first material box cavity 09 by a dedicated feeding cylinder. The first material box cavity 09 will move forward with the circular conveyor belt 02, leaving the material receiving station 03 and entering the sealing inspection station 04. The first material box cavity 09 will be sealed here and the material 08 inside will be leak-tested. After the inspection is completed, the first material box cavity 09 will enter the unloading and waste removal station 05. The qualified material 08 in the first material box cavity 09 will be pushed into the material output station 07 for unloading, while the unqualified material will be rejected.

[0042] Specifically, in order to achieve effective docking with the material 08 from the previous process equipment in this embodiment, the material box and the circular conveyor of the material box at the material input station 06 of this embodiment are used to process the multiple incoming materials from the front-end equipment. Each material box holds 12 strips (it can also hold 6, 10, 15, etc.), that is, every 12 strips are collected into a group. The material boxes are evenly distributed on the circular conveyor of the material box at the material input station 06. After each tray of material boxes is full, the circular conveyor of the material box rotates once. When 3 groups are collected and the material boxes are facing the material receiving station 03, the feeding cylinder and its push plate push the 3 groups of strips into the first material box cavity 09 of the material receiving station 03. The inlet of the first material box cavity 09 is set to be an open opening to facilitate docking of the material 08 with the multiple openings.

[0043] This setup enables automatic loading and unloading of material 08, sealing detection, and rejection of defective products, improving production efficiency, reducing manual labor load, and making it more suitable for factory assembly line production.

[0044] Preferably, the first material box cavity 09 is floatingly and elastically connected to the annular conveyor belt 02, and the bottom sides of the first material box cavity 09 are connected to the annular conveyor belt 02 by springs 10.

[0045] Furthermore, the sealing inspection station 04 includes: a first cylinder 11, a first push plate 12, and a sealing box 13; the first cylinder 11 is vertically installed on the frame 01 and is located below the first material box mold cavity 09; the first push plate 12 is installed on the movable end of the first cylinder 11 and is used to push the first material box mold cavity 09 upward; the sealing box 13 is located above the first material box mold cavity 09 and is opposite to the first push plate 12, and the sealing box 13 is used to cover the first material box mold cavity 09 to seal the first material box mold cavity 09.

[0046] In this embodiment, taking the first material box cavity 09 as an example, upon reaching the sealing test station, the sealing leak detection process for this group of materials 08 begins. Since this embodiment uses the vacuum decay method for leak detection, the basic process is as follows: after reaching its position, the first material box cavity 09, driven by the first cylinder 11 installed at the bottom, moves towards the top sealing box 13, sealing the material 08 inside the first material box cavity 09 into the sealing box 13. Then, the sealing test instrument begins operation, performing vacuuming, pressure balancing, and small / large leak tests on the sealed first material box cavity 09. After completing these tasks, the cylinder retracts. At this station, each first material box cavity 09 corresponds to an independent testing instrument, which analyzes each first material box cavity 09 individually to ensure the accuracy of the test data.

[0047] It should be noted that the first material box cavity 09 can be set to a certain elastic floating by compression spring (or tension spring, etc.). In this way, the first material box cavity 09 can be reset after the sealing test, so as to facilitate loading and unloading. In addition to using the bottom cylinder to push the material box cavity to achieve sealing, the material box cavity can also be moved upward to achieve sealing by means of cam, etc. This article does not make specific limitations.

[0048] Furthermore, the sealing box 13 is a square box with an opening on the lower side, and a flexible sealing ring 14 is provided at the lower edge of the sealing box 13.

[0049] like Figure 5 and Figure 6 As shown, in order to increase the sealing effect between the sealing box 13 and the first material box cavity 09, the sealing box 13 is set as a square box with an opening at the bottom, and the volume of the sealing box 13 is exactly matched with the first material box cavity 09. In this way, the sealing box 13 can be completely fitted around the outer periphery of the first material box cavity 09. At the same time, a flexible sealing ring 14 is also provided at the bottom of the side wall of the sealing box 13. In this way, the sealing effect of the first material box cavity 09 can be better.

[0050] Preferably, unlike some devices that use direct pressure detection, which is easily affected by environmental factors, has low accuracy, and poor sensitivity, this embodiment uses differential pressure method to determine whether a product is leaking. It is a non-destructive quantitative measurement method, and its principle is similar to a balance: during detection, we simultaneously evacuate the test object and the reference object for the same amount of time. After evacuation, we enter a pressure holding stage to make the pressure on both sides of the differential pressure sensor diaphragm completely equal, and observe the balance on both sides. If the test object does not leak, the diaphragm of the differential pressure sensor will be in a balanced state, and the differential pressure output will be zero. If the test object leaks, the diaphragm of the differential pressure sensor will be in an unbalanced state, and the differential pressure caused by the leak can be detected. Preferably, this embodiment adopts a detection process of first detecting small leaks (Cycle 1 cycle) and then detecting large leaks (Cycle 2 cycle). The specific process principle is as follows: first, the test object placed in the detection mold cavity (i.e., the first material box mold cavity 09) and the reference object placed in the standard mold cavity are evacuated and then held at pressure to balance, and a small differential pressure is observed to determine whether a small leak exists. If there is no slight differential pressure, the automatic capacity matching valve will be opened to make the pressure in the test cavity match the pressure in the standard cavity. If there is a large leak, the gas will not only fill the space between the test object and the test cavity, but will also enter the test object. At this time, the pressure in the test cavity will be less than the pressure in the reference cavity, resulting in a differential pressure.

[0051] Preferably, the unloading and waste removal station 05 includes: a second cylinder 15 and a second push plate 16; the second cylinder 15 is disposed above the first material box cavity 09; the second push plate 16 is installed on the movable end of the second cylinder 15, and the second push plate 16 can extend into the first material box cavity 09 to push out the material 08.

[0052] Specifically, such as Figure 7 As shown, the unloading and waste removal station 05 mainly completes the unloading of qualified products and the removal of unqualified products. The material 08 is pushed out of the first material box cavity 09 by the second cylinder 15 and the second push plate 16 on it.

[0053] Furthermore, a rotatable transition platform 17 is provided on the frame 01. The transition platform 17 can connect the unloading and waste removal station 05 with the material output station 07. A collection box 18 is placed below the transition platform 17.

[0054] Specifically, such as Figure 7As shown, during the process of material 08 being pushed out of the first material box cavity 09, the intermediate transition platform 17 is set as a mechanism that can be flipped and opened. It can be flipped by a cylinder or electric cylinder at a certain angle. If the inspected product is qualified, the transition platform 17 will not flip, that is, the transition platform 17 will remain horizontal. In this way, the unloading and waste removal station 05 and the material output station 07 can be connected, and the material 08 will be pushed to the material output station 07. This station mainly completes the work of sorting the material 08 and conveying qualified material 08 to the back-end equipment. In order to achieve good material 08 docking with the back-end equipment, this station needs to sort the material 08 and output it backward in an orderly manner with the same posture. If the inspected product is unqualified, the transition platform 17 will flip. In this way, there will be a gap between the unloading and waste removal station 05 and the material output station 07, and the material 08 will fall directly. At the same time, a waste collection box 18 is set at the lower end of this position. The collection box 18 can collect unqualified material 08. Preferably, material 08 can also be removed from the first material box cavity 09 by a combination of cylinder grippers or robotic arms. The qualified material 08 is directly placed on the conveyor belt of the material output and sorting station. The unqualified material is removed by the gripper releasing midway (i.e. at the intermediate transition platform 17).

[0055] Preferably, the material receiving station 03 is also provided with a second material box cavity 19 and a third material box cavity 20, with the first material box cavity 09, the second material box cavity 19 and the third material box cavity 20 arranged at intervals.

[0056] like Figure 2 As shown, in order to speed up the detection efficiency in this embodiment, three sets of material box cavities are set on the circular conveyor belt at the same time, namely the first material box cavity 09, the second material box cavity 19 and the third material box cavity 20, which are spaced apart. In this way, the first material box cavity 09 can be loading material while the second material box cavity 19 is performing sealing detection at the sealing detection station, and the third material box cavity 20 is unloading material. In this way, each station is always in operation, which can speed up the leak detection efficiency of material 08.

[0057] Of course, this embodiment sets three sets of material box cavities. In actual production, the number of material box cavities can be set according to actual needs. This article does not make specific limitations here.

[0058] Preferably, the first material box cavity 09 is driven by the first servo motor 21, the second material box cavity 19 is driven by the second servo motor 22, and the third material box cavity 20 is driven by the third servo motor 23.

[0059] Specifically, in this embodiment, different cavities of the material box are driven by different servo motors, which facilitates control during actual production.

[0060] Preferably, the first material box cavity 09, the second material box cavity 19, and the third material box cavity 20 are all detachably mounted on the annular conveyor belt 02.

[0061] Understandably, the first material box cavity 09, the second material box cavity 19, and the third material box cavity 20 can be set as quick-release type, so as to realize the quick replacement of the material box cavity to adapt to the production of materials 08 of different specifications, which is convenient and fast.

[0062] Preferably, a purging and drying station 24 is provided below the annular conveyor belt 02 for cleaning and drying the first material box cavity 09, the second material box cavity 19 and the third material box cavity 20 that it passes through.

[0063] In this embodiment, a purging and drying station 24 can also be set at the lower part of the annular conveyor belt 02, which can purge and dry the material box mold cavity that passes through, especially the material box mold cavity that leaks unqualified material 08. The purpose is to ensure the dryness inside the material box mold cavity, because if there is liquid medicine or it is very damp inside, it will affect the test results of other materials 08 in the mold cavity next time. That is, the material 08 that is not leaking will be judged as unqualified.

[0064] Furthermore, in this embodiment, the material box cavity is set on the annular conveyor belt 02, and each station is set along the annular conveyor belt 02, and except for the purging and drying station, the other stations are all located on the upper layer of the annular conveyor belt 02; in another embodiment, specifically as follows... Figure 8 As shown, the material box mold cavity is set on two parallel strip conveyor belts distributed in two layers, that is, the two conveyor belts are independent and horizontal, but it should be noted that the two conveyor belts convey in opposite directions. In this embodiment, the material box mold cavity can move between the upper and lower layers through vertical lifting mechanisms set at the ends of the two conveyor belts. It can be understood that with this setting, the material box mold cavity will always be in an upright state. In this way, the working station can also be set on the lower conveyor belt, unlike the annular conveyor belt 02, which can only set the working station on the upper layer of the annular conveyor belt 02, thus saving a lot of space.

[0065] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0067] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A leak detection device for strip-shaped packaging bags, characterized in that, The utility model relates to a kind of material receiving and sealing detection device, including:Ring conveyor belt (02) is installed in frame (01), material receiving station (03), sealing detection station (04) and blanking and waste material rejection station (05) are sequentially arranged along the direction of conveyance of the ring conveyor belt (02), the ring conveyor belt (02) is close to the end of material receiving station (03) and is provided with material input station (06), the end of the ring conveyor belt is close to blanking and waste material rejection station (05) and is provided with material output station (07), the material input station (06) is used to collect the material (08) conveyed by front-end equipment and push the material (08) into the first material box mold cavity (09) of material receiving station (03), the first material box mold cavity (09) moves with the ring conveyor belt (02) to transport the material (08) to sealing detection station (04) and carry out sealing leak detection, the first material box mold cavity (09) continues to move to blanking and waste material rejection station (05) after sealing detection station (04) to carry out the rejection of the material (08) or transfer to the material output station (07). The first material box mold cavity (09) is elastically connected with the ring conveyor belt (02) in a floating manner, and the bottom surface of the first material box mold cavity (09) is connected with the ring conveyor belt (02) through springs (10) on both sides.

2. The strip-pack leak detection apparatus of claim 1, wherein, The sealing detection station (04) includes:

3. The strip-pack leak detection apparatus of claim 2, wherein, a first cylinder (11) vertically installed on the frame (01), and the first cylinder (11) is located below the first material box mold cavity (09); a first push plate (12) installed on the movable end of the first cylinder (11) for pushing the first material box mold cavity (09) to move upward; a sealing box body (13) located above the first material box mold cavity (09), and the sealing box body (13) is arranged opposite to the first push plate (12), and the sealing box body (13) is used for covering the first material box mold cavity (09) to seal the first material box mold cavity (09). The sealing box body (13) is a square box body with an open bottom, and a flexible sealing ring (14) is arranged at the lower edge of the sealing box body (13).

4. The strip-pack leak detection apparatus of claim 3, wherein, The blanking and waste material rejection station (05) includes:

5. The strip-pack leak detection apparatus of claim 1, wherein, a second cylinder (15) arranged above the first material box mold cavity (09); a second push plate (16) installed on the movable end of the second cylinder (15), and the second push plate (16) can extend into the first material box mold cavity (09) to push out the material (08). A rotatable transition platform (17) is arranged on the frame (01), the transition platform (17) can communicate the blanking and waste material rejection station (05) with the material output station (07), and a collection box (18) is arranged below the transition platform (17).

6. The strip-pack leak detection apparatus of claim 5, wherein, The material receiving station (03) is also provided with a second material box mold cavity (19) and a third material box mold cavity (20), and the first material box mold cavity (09), the second material box mold cavity (19) and the third material box mold cavity (20) are arranged at intervals.

7. The strip-pack leak detection apparatus of claim 1, wherein, ​ 8. The strip-pack leak detection apparatus of claim 7, wherein, The first material box mold cavity (09) is driven by a first servo motor (21), the second material box mold cavity (19) is driven by a second servo motor (22), and the third material box mold cavity (20) is driven by a third servo motor (23).

9. The strip-pack leak detection apparatus of claim 7, wherein, The first material box mold cavity (09), the second material box mold cavity (19) and the third material box mold cavity (20) are detachably installed on the annular conveying belt (02).

10. The strip-pack leak detection apparatus of claim 7, wherein, A blowing and drying station (24) is arranged below the annular conveying belt (02) for cleaning and drying the first material box mold cavity (09), the second material box mold cavity (19) and the third material box mold cavity (20) passing through.

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