Bag body sealability detection apparatus

Abstract

The utility model provides a kind of bag body leakproofness detection equipment, it is related to leakproofness detection technical field, the bag body leakproofness detection equipment provided by the utility model includes first support frame, driving device, pressing plate and detection device;First support frame has supporting surface;Pressing plate is located above first support frame along vertical direction, and the first avoiding gap of avoiding product surface upper convex structure is opened in pressing plate, driving device is connected with pressing plate and drives pressing plate to move along vertical direction;Detection device is connected with driving device and is configured to fill in test medium into product and block the test medium outlet of product.The bag body leakproofness detection equipment provided by the utility model is favorable to guarantee the accuracy of test result, and convenient for product's taking and placing material operation.

Description

Technical Field

[0001] This utility model relates to the field of sealing performance testing technology, and in particular to a bag sealing performance testing device. Background Technology

[0002] In the medical field, bags are commonly used to hold liquid substances. The airtightness of these bags is primarily achieved through welding, typically using thermoforming welding to join two plastic films together along a predetermined path to form a sealed cavity structure. To ensure welding quality, airtightness testing is usually included in the production line to detect any leaks at the welded joints and on the surface of the plastic film.

[0003] Existing airtightness testing equipment uses upper and lower fixed plates to limit the bag's expansion. However, this design has two drawbacks. First, the surface of the plates facing the bag is a closed plane, making it unsuitable for bags with raised structures (such as liquid inlets, hooks, or mounting openings). During testing, interference between the raised structures and the plates can cause the internal air pressure to become unstable after the bag expands, affecting the test results. Second, existing airtightness testing equipment cannot adjust the distance between the upper and lower plates as needed, and the small distance between them makes material handling inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a bag sealing performance testing device, which helps to ensure the accuracy of test results and facilitates the handling of product loading and unloading.

[0005] To achieve the above objectives, this utility model provides the following technical solution: In a first aspect, this utility model provides a bag sealing performance testing device, including a first support frame, a driving device, a pressure plate, and a testing device; The first support frame has a supporting surface; The pressure plate is located vertically above the first support frame. The pressure plate has a first clearance notch to avoid the protruding structure on the product surface. The driving device is connected to the pressure plate and drives the pressure plate to move vertically. The detection device is connected to the drive device and configured to fill the product with test medium and seal the product's test medium outlet.

[0006] Compared to existing technologies, the bag sealing performance testing device provided by this utility model features a first clearance notch on the pressure plate, making it suitable for products with an upwardly convex structure. This ensures that the internal air pressure of the product is not affected by structural interference after expansion. Furthermore, the pressure plate can rise and fall with the drive device before and after testing, providing ample space for product loading and unloading, facilitating the product loading and unloading operation.

[0007] In an optional embodiment, a first mesh plate is provided on the side of the pressure plate facing the support surface, and / or, a second mesh plate is provided on the support surface.

[0008] The above-described embodiments can not only detect the sealing performance of the welded joints of the urine bag, but also detect the damage to the surface of the urine bag. Compared with the pressure plate directly contacting the urine bag, it can effectively amplify the pressure changes caused by damage to the surface of the urine bag, thereby achieving a more accurate detection of the sealing quality of the urine bag.

[0009] In an optional embodiment, the detection device has multiple operating ends that move vertically, when the supporting surface is provided with a second mesh plate: The supporting surface has a protruding structure facing the pressure plate. The protruding structure is arranged vertically opposite to each operating end. The second mesh plate has a second avoidance notch to avoid the protruding structure.

[0010] In the above embodiments, the protruding structure can support the part to be sealed, ensuring that the operating end in the detection device fits tightly with the part to be sealed on the urine bag, and preventing the part to be sealed from sinking from the mesh of the second mesh plate during the process of sealing the part to be sealed on the urine bag by the detection device, thus avoiding poor sealing.

[0011] In an optional embodiment, the protruding structure includes a first protrusion having a recessed area that avoids the internal structure of the product.

[0012] Some products have a structure with a certain thickness that protrudes downward at the part to be sealed. When the detection device presses down on the part to be sealed, the structure can be accommodated in the recessed area, thereby ensuring that the other parts of the part to be sealed are stably placed on the top surface of the first protrusion, and preventing the part to be sealed from shaking, which would affect the sealing performance.

[0013] In an optional embodiment, the drive device includes a fixed frame, a sliding frame, and a drive assembly; The sliding frame slides vertically into contact with the fixed frame; The drive assembly is mounted on the fixed frame, the drive assembly is connected to the sliding frame and drives the sliding frame to slide relative to the fixed frame, and the pressure plate is connected to the sliding frame; The detection device is connected to the sliding frame.

[0014] The above-described implementation method, through the coordinated operation of the fixed frame, sliding frame and drive components, constructs a stable and reliable vertical lifting platform, realizes synchronous motion control of the pressure plate and the detection device, and improves the ease of operation, detection accuracy and operational stability of the bag sealing detection equipment.

[0015] In an optional embodiment, the detection device includes a blocking mechanism and an air intake mechanism, both of which are connected to the drive device.

[0016] The above-described implementation method can simultaneously enable the sealing mechanism and the air intake mechanism to dock with the convex structure on the urine bag to be sealed, thereby improving operational efficiency.

[0017] In an optional embodiment, the air intake mechanism includes a first drive member, an air intake head, a second drive member, and a first gripper. The first driving component includes a first fixed end and a first movable end that slides in a vertical direction with the first fixed end. The first fixed end is connected to the driving device. The air intake head is connected to the first movable end; The second drive unit is connected to the first fixed end, and the first gripper is connected to the second drive unit, with the first gripper located below the air intake head in the vertical direction.

[0018] The above-described implementation separates the air intake head and the first gripper into different drive units and adopts an upper and lower stacked layout, thereby achieving coordinated operation of air intake sealing and mechanical clamping functions, improving docking accuracy and sealing stability, and enhancing the reliability of test results.

[0019] In an optional embodiment, the sealing mechanism includes a third driving member, a first sealing head, a fourth driving member, and a second gripper. The third driving component includes a second fixed end and a second movable end that slides in a vertical direction with the second fixed end; the second fixed end is connected to the driving device. The first sealing head is connected to the second movable end; The fourth driving component is connected to the second fixed end, and the second gripper is connected to the fourth driving component, with the second gripper located vertically below the first sealing head.

[0020] The above structural design realizes the step-by-step operation logic of "clamping first, then sealing", which effectively improves the stability and reliability of the sealing process. At the same time, since the second gripper is located below the first sealing head, the overall structure is compact and has a high space utilization rate.

[0021] In an optional embodiment, the detection device further includes a second sealing head connected to the drive device.

[0022] The second sealing head can seal the gas exchange port on the urine bag to ensure that a closed system can be formed inside the urine bag after the test medium (such as compressed air or nitrogen) is filled into the urine bag, preventing inaccurate test results due to incomplete blocking of the gas leakage path.

[0023] In an optional embodiment, the supporting surface is provided with multiple supporting positions, and the detection device is configured to correspond one-to-one with the multiple supporting positions in the vertical direction. All multiple detection devices are connected to the driving device.

[0024] The above-described implementation achieves batch leak testing on a single device by setting up multiple support positions and corresponding detection devices, significantly improving testing efficiency and making it suitable for automated quality inspection processes in large-scale production environments. Furthermore, all detection units share the same drive unit, resulting in a compact structure, simple control, reduced equipment manufacturing costs and maintenance complexity, and promising prospects for industrial applications. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A three-dimensional structural diagram of a portion of the bag sealing performance testing device provided in an embodiment of this utility model; Figure 2 A three-dimensional structural diagram of the bag sealing performance testing device provided in the embodiment of this utility model from a first-view perspective; Figure 3 A three-dimensional structural diagram of the bag sealing performance testing device provided in the embodiment of this utility model from a second perspective; Figure 4 A three-dimensional structural schematic diagram of the air intake mechanism provided for an embodiment of this utility model; Figure 5 A side view of the air intake mechanism provided in an embodiment of this utility model; Figure 6 A schematic diagram of the intake mechanism after being cut by the AA section, provided for an embodiment of this utility model; Figure 7 A three-dimensional structural schematic diagram of the sealing mechanism provided in an embodiment of this utility model; Figure 8 A side view of the sealing mechanism provided in an embodiment of this utility model; Figure 9 A schematic diagram of the sealing mechanism provided in this embodiment of the utility model after being cut by the BB section.

[0027] Icons: 1-First support frame; 11-Supporting surface; 111-Protruding structure; 1111-First protrusion; 1112-Recessed area; 12-Top plate; 2-Drive device; 21-Fixing frame; 211-Guide column; 22-Sliding frame; 221-Sliding sleeve; 222-Crossbeam; 223-Mounting plate; 224-Connecting rod; 23-Drive assembly; 3-Pressure plate; 31-First clearance notch; 4-Detection device; 41-Sealing mechanism; 411-Third driving component; 4111-Second fixed end; 411 2-Second movable end; 412-First sealing head; 4121-Plug-in connector; 4122-Sealing block; 413-Fourth driving component; 414-Second gripper; 42-Intake mechanism; 421-First driving component; 4211-First fixed end; 4212-First movable end; 422-Intake head; 4221-Sealing connector; 4222-Gas passage; 423-Second driving component; 424-First gripper; 43-Second sealing head; 5-First mesh plate; 6-Second mesh plate; 61-Second clearance notch. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0032] The first aspect of this utility model provides a bag sealing performance testing device, such as... Figure 1 and Figure 2 As shown, it includes a first support frame 1, a drive device 2, a pressure plate 3, and a detection device 4; The first support frame 1 has a supporting surface 11; The pressure plate 3 is located above the first support frame 1 in the vertical direction. The pressure plate 3 has a first clearance notch 31 to avoid the protruding structure on the product surface. The driving device 2 is connected to the pressure plate 3 and drives the pressure plate 3 to move in the vertical direction. The detection device 4 is connected to the drive device 2 and configured to fill the product with test medium and seal the product's test medium outlet.

[0033] When using the bag sealing performance testing equipment provided in the above embodiment, the pressure plate 3 and the testing device 4 are initially positioned at the top, facilitating the placement of the product on the support surface 11. Subsequently, the driving device 2 moves the pressure plate 3 and the testing device 4 vertically downwards, causing the pressure plate 3 to gradually approach the product and descend to a suitable distance from the product. This distance is less than the maximum height of the product's free expansion. During this process, the first clearance notch 31 on the pressure plate 3 can avoid the upward protrusion structure on the product surface, allowing the pressure plate 3 to approach the product as closely as possible without interfering with the upward protrusion structure. Then, the testing device 4 fills the product with test medium and seals the product's test medium outlet to test the product's sealing performance. After the test is completed, the driving device 2 moves the pressure plate 3 and the testing device 4 vertically upwards, facilitating material removal.

[0034] In the bag sealing test equipment provided in the above embodiment, the pressure plate 3 is provided with a first clearance notch 31 that can avoid the upward protruding structure, so that the internal air pressure of the product will not be affected by structural interference after the product expands. In addition, before and after the test, the driving device 2 can drive the pressure plate 3 and the test device 4 to the top position, making room for material handling and facilitating the material handling operation.

[0035] Specifically, depending on the product type, the specific structure of the above-mentioned convex structure is also different. It can be a liquid inlet connector, air inlet connector, gas exchange port or box mounting port, etc., which can communicate with the outside air. It can also include a hook or other structure that protrudes from the product surface and is not used to communicate with the outside air. Therefore, the above-mentioned convex structure is not limited to a structure with a certain function or a certain shape.

[0036] In alternative implementations, such as Figure 1As shown, the supporting surface 11 has a protruding structure 111 protruding in the direction of the pressure plate 3, and the protruding structure 111 is set in accordance with the part of the product that needs to be pressed down and sealed by the testing device 4.

[0037] Specifically, when the product is placed on the support surface 11, the convex structure to be sealed (such as a conduit interface or gas exchange port) is directly opposite the protruding structure 111. During the downward movement of the driving device 2 driving the pressure plate 3 and the detection device 4, the detection device 4 first contacts the convex structure to be sealed on the product, and then continues to press down, so that a sealed connection is formed between the detection device 4 and the product, and the test medium is injected into the product through one of the convex structures for subsequent sealing test.

[0038] During the above process, the protruding structure 111 provides local support for the product, enabling the testing device 4 to more effectively seal and fill the test medium when applying downward pressure to the product.

[0039] In alternative implementations, such as Figure 1 As shown, the protruding structure 111 includes a first protrusion 1111, and the first protrusion 1111 is provided with a recessed area 1112 that avoids the internal structure of the product.

[0040] Some products have a structure with a certain thickness that protrudes downward at the part to be sealed. When the detection device 4 presses down on the part to be sealed, the structure can be accommodated in the recessed area 1112, thereby ensuring that the other parts of the part to be sealed are stably placed on the top surface of the first protrusion 1111, and preventing the part to be sealed from shaking, which would affect the sealing.

[0041] Specifically, the first protrusion 1111 may include a left protrusion and a right protrusion, and the left protrusion and the right protrusion are spaced apart to form a recessed area 1112.

[0042] Of course, the protruding structure 111 is not limited to only the first protruding part 1111, but may also include the second protruding part, the third protruding part, etc. The number of protruding parts can be set according to the number of parts that need to be sealed on the product.

[0043] The products mentioned above can be, but are not limited to, urine bags. The following section will use urine bags as an example for specific explanation.

[0044] In an optional embodiment, a first mesh plate 5 is provided on the side of the pressure plate 3 facing the support surface 11. The first mesh plate 5 has holes that penetrate through the thickness direction of the first mesh plate 5, so that the surface of the urine bag can be exposed to the external environment through the holes during the testing process.

[0045] When the testing device 4 fills the urine bag with test medium, if the urine bag has a leakage defect, the test medium will seep out from the leak point on the surface of the urine bag and be discharged through the holes on the first mesh plate 5, causing a change in the pressure inside the urine bag, thereby determining that the sealing performance of the urine bag is insufficient.

[0046] Therefore, the above-described embodiments can not only detect the sealing performance of the urine bag weld joint, but also detect the damage to the upper surface of the urine bag. Compared with the pressure plate 3 directly contacting the urine bag, it can effectively amplify the pressure changes caused by damage to the upper surface of the urine bag, thereby achieving more accurate detection of the urine bag sealing quality.

[0047] Specifically, the holes on the first mesh plate 5 are evenly distributed and of moderate size, ensuring that surface defects of the urine bag can be effectively exposed under pressure.

[0048] In addition, such as Figure 2 As shown, the edge of the first mesh plate 5 can extend from the side of the pressure plate 3 to the top surface of the pressure plate 3, forming a covering structure on the edge of the pressure plate 3, thereby connecting the first mesh plate 5 and the pressure plate 3. Of course, the first mesh plate 5 and the pressure plate 3 can also adopt other connection methods, such as screw connection or snap-fit ​​connection.

[0049] When the pressure plate 3 has a first clearance notch 31 to avoid the protruding structure on the product surface, the first mesh plate 5 has a third clearance notch that is vertically opposite to the first clearance notch 31, so that the protruding structure can pass through the third clearance notch and the first clearance notch 31 in sequence during the test.

[0050] In alternative implementations, such as Figure 2 As shown, the supporting surface 11 is provided with a second mesh plate 6, which can be used to support the urine bag. Its purpose is similar to that of the first mesh plate 5, which can effectively amplify the pressure change caused by the damage to the lower surface of the urine bag, thereby achieving more accurate detection of the sealing quality of the urine bag.

[0051] like Figure 2 As shown, the first support frame 1 includes a top plate 12 with a supporting surface 11. The second mesh plate 6 is connected to the top plate 12. The specific connection method can be referred to the connection method between the first mesh plate 5 and the pressure plate 3. To save space, it will not be described in detail here.

[0052] In an optional embodiment, the detection device 4 has multiple operating ends that move in a vertical direction. The operating ends may include an exhaust device for blocking and discharging a gaseous test medium into one of the convex structures on the urine bag that are in communication with the outside air, and a sealing device for blocking and sealing the remaining convex structures on the urine bag that are in communication with the outside air.

[0053] The protruding structure 111 on the supporting surface 11 is arranged vertically opposite to each operating end so as to support the above-mentioned protruding structure, ensure the stability of the seal when the detection device 4 presses down to seal the above-mentioned protruding structure, and make the detection results more accurate.

[0054] When the supporting surface 11 is provided with the second mesh plate 6, the second mesh plate 6 is provided with the second clearance notch 61 of the clearance protrusion structure 111.

[0055] When the urine bag is placed on the second mesh plate 6, in order to prevent the part to be sealed from sinking into the mesh of the second mesh plate 6 during the process of the detection device 4 sealing the part to be sealed on the urine bag, thus causing poor sealing, the supporting surface 11 is provided with a protruding structure 111 in the direction of the pressure plate 3. The second clearance notch 61 avoids the above-mentioned protruding structure 111, so that the top surface of the protruding structure 111 can be flush with the top surface of the second mesh plate 6, or slightly higher than the top surface of the second mesh plate 6. The protruding structure 111 can support the part to be sealed, ensuring that the operating end in the detection device 4 and the part to be sealed on the urine bag are tightly matched.

[0056] In alternative implementations, such as Figure 2 As shown, the drive unit 2 includes a fixed frame 21, a sliding frame 22, and a drive assembly 23.

[0057] The fixed frame 21 serves as the support structure for the entire drive unit and also provides a guiding and support base for the sliding frame 22.

[0058] The sliding frame 22 slides vertically against the fixed frame 21. Specifically, a stable guiding connection is achieved through a guide rail or guide post 211 on the fixed frame 21 and a corresponding sliding sleeve 221 or slider on the sliding frame 22, ensuring smooth and unbiased movement of the sliding frame 22 during lifting and lowering. This sliding fit structure effectively guarantees the coaxiality and repeatability of the pressure plate 3 and the detection device 4 during vertical movement, thereby improving the stability and reliability of the leak detection operation.

[0059] The drive assembly 23 is mounted on the fixed frame 21, and its output end is connected to the sliding frame 22, used to drive the sliding frame 22 to reciprocate vertically relative to the fixed frame 21. The drive assembly 23 can be a linear drive element such as a cylinder, hydraulic cylinder, or electric push rod, preferably a cylinder, which controls the direction of the air source to achieve the rising and falling movements of the sliding frame 22. One, two, three, or more cylinders can be configured, and the number can be adjusted according to the size of the sliding frame 22. In other embodiments, a servo motor combined with a lead screw and nut mechanism or a synchronous belt drive mechanism can also be used to achieve position adjustment.

[0060] Specifically, the pressure plate 3 is fixedly connected to the lower part or bottom area of ​​the sliding frame 22 and moves up and down synchronously with the sliding frame 22; at the same time, the detection device 4 is also integrated or fixedly connected to the sliding frame 22, so that the pressure plate 3 and the detection device 4 can coordinate their movements under the same drive, maintain their relative positions, and simplify the overall structure.

[0061] The above-described implementation method, through the coordinated operation of the fixed frame 21, the sliding frame 22 and the drive assembly 23, constructs a stable and reliable vertical lifting platform, realizes the synchronous motion control of the pressure plate 3 and the detection device 4, and improves the ease of operation, detection accuracy and operational stability of the bag sealing detection equipment.

[0062] In alternative implementations, such as Figure 3 As shown, the sliding frame 22 includes a crossbeam 222, a mounting plate 223, and connecting rods 224. There are two crossbeams 222, and multiple sliding sleeves 221 are connected to each crossbeam 222. The multiple sliding sleeves 221 are in one-to-one sliding engagement with multiple guide posts 211 on the fixed frame 21. The mounting plate 223 is connected to the top surface of the two crossbeams 222 by bolts or other connecting parts. The side of the mounting plate 223 away from the crossbeams 222 is connected to the output end of the drive assembly 23. There are multiple connecting rods 224. One end of each connecting rod 224 is connected to the mounting plate 223, and the other end is connected to the pressure plate 3.

[0063] In alternative implementations, such as Figure 3 As shown, the detection device 4 includes a sealing mechanism 41 and an air intake mechanism 42, both of which are connected to the drive device 2.

[0064] Specifically, the sealing mechanism 41 and the air intake mechanism 42 are respectively installed on the mounting plate 223, and move synchronously in the vertical direction as the mounting plate 223 is driven by the drive component 23, thereby simultaneously realizing the docking operation with the upper convex structure to be sealed on the urine bag, improving the operation efficiency.

[0065] In alternative implementations, such as Figures 4 to 6 As shown, the air intake mechanism 42 includes a first driving member 421, an air intake head 422, a second driving member 423, and a first gripper 424. The first driving member 421 includes a first fixed end 4211 and a first movable end 4212 that slides vertically with the first fixed end 4211. The first fixed end 4211 is connected to the driving device 2. The air intake head 422 is connected to the first movable end 4212. The second driving member 423 is connected to the first fixed end 4211. The first gripper 424 is connected to the second driving member 423 and is located vertically below the air intake head 422.

[0066] When the driving device 2 drives the entire detection device 4 to descend to the predetermined position, the second driving component 423 is activated, driving the first gripper 424 to close and clamp the root area of ​​the air inlet to ensure the stability of the air inlet; then the first movable end 4212 drives the air inlet head 422 to continue to extend downward and insert into the air inlet of the urine bag; then the test medium is introduced into the urine bag through the air inlet head 422, while the other convex structures of the urine bag that communicate with the outside are sealed by the sealing mechanism 41, and the leakage detection begins; after the detection is completed, the air inlet head 422 retracts to the upper position, and the first gripper 424 is released; finally, the whole device moves upward with the driving device 2 to reset, making it easy to remove the tested product.

[0067] This embodiment separates the air intake head 422 and the first gripper 424 into different drive units and adopts an upper and lower stacked layout, which realizes the coordinated cooperation of air intake sealing and mechanical clamping functions, improves docking accuracy and sealing stability, and enhances the reliability of test results.

[0068] The first driving component 421 can be a conventional linear drive element such as a cylinder, an electric push rod, or a linear motor. The second driving component 423 can be a driving structure such as a cylinder, an electric push rod, or a rotary cylinder. The driving structure is mounted on the mounting base, and the first gripper 424 is rotatably connected to the mounting base. The linear motion of the driving structure drives the first gripper 424 to rotate relative to the mounting base, or the rotational motion of the driving structure directly drives the first gripper 424 to rotate.

[0069] like Figure 6 As shown, the air inlet head 422 is equipped with a sealing connector 4221 for connecting to the air inlet on the urine bag, and has a built-in gas channel 4222. This gas channel 4222 is connected to an external gas source through a pipeline for filling the urine bag with test media (such as compressed air or nitrogen). During operation, the air inlet head 422 can extend downward under the drive of the first driving member 421, accurately insert into the air inlet of the bag body, and achieve an airtight connection through an elastic sealing ring or a conical sealing structure.

[0070] In alternative implementations, such as Figures 7 to 9 As shown, the sealing mechanism 41 includes a third driving member 411, a first sealing head 412, a fourth driving member 413, and a second gripper 414. The third driving member 411 includes a second fixed end 4111 and a second movable end 4112 that slides vertically with the second fixed end 4111. The second fixed end 4111 is connected to the driving device 2. The first sealing head 412 is connected to the second movable end 4112. The fourth driving member 413 is connected to the second fixed end 4111, and the second gripper 414 is connected to the fourth driving member 413 and is located vertically below the first sealing head 412.

[0071] After the urine bag is placed on the support surface 11, the drive device 2 drives the entire sealing mechanism 41 and air intake mechanism 42 to move down to the working position. Then, the fourth drive member 413 first drives the second gripper 414 to close, clamping the root of the box seat mounting opening on the urine bag, achieving initial positioning and stable clamping to prevent displacement during the sealing process; then the second movable end 4112 drives the first sealing head 412 to move downward, so that its sealing part is accurately pressed into and seals the opening end of the box seat mounting opening, completing the airtight sealing.

[0072] The above structural design realizes the step-by-step operation logic of "clamping first, then sealing", which effectively improves the stability and reliability of the sealing process. At the same time, since the second gripper 414 is located below the first sealing head 412, the overall structure is compact and has a high space utilization rate.

[0073] The third drive component 411 can be a conventional linear drive element such as a cylinder, an electric actuator, or a linear motor. The optional structure of the fourth drive component 413 is similar to that of the second drive component 423, and will not be described in detail here for the sake of brevity.

[0074] The mounting opening of the housing includes an outer ring and an inner ring, with an annular groove between the outer ring and the inner ring, such as... Figure 9 As shown, the lower end of the first sealing head 412 is provided with a plug 4121 that extends into the annular groove. The plug 4121 can be made of an elastic material (such as silicone, rubber, etc.). The plug 4121 is provided with a sealing block 4122 inside. The sealing block 4122 can press down on the inner ring under the pressure state to achieve good airtight sealing and prevent gas or liquid from escaping from the interface during the test.

[0075] In an optional embodiment, the detection device 4 further includes a second sealing head 43 connected to the drive device 2. The second sealing head 43 can seal the gas exchange port on the urine bag to ensure that a closed system can be formed inside the urine bag after the test medium (such as compressed air or nitrogen) is filled into the urine bag, so as to prevent inaccurate test results due to the gas leakage path not being completely blocked.

[0076] The second sealing head 43 can be separately configured with a fifth driving component. The fifth driving component includes a third fixed end and a third movable end that slides in the vertical direction with the third fixed end. The third fixed end is connected to the driving device 2, and the third movable end is connected to the second sealing head 43. The second sealing head 43 seals the gas exchange port through the third movable end.

[0077] Of course, the second sealing head 43 may not be equipped with a separate drive component. It can be connected to the second movable end 4112, and moved downwards by the second movable end 4112. In this case, it is necessary to ensure that the second movable end 4112 has a relatively precise length dimension so that while the first sealing head 412 seals the mounting port of the box seat, the second sealing head 43 can simultaneously seal the gas exchange port. Based on this, the second sealing head 43 can be equipped with a floating spring, so that the second sealing head can float up and down relative to the second movable end 4112, and the height difference can be compensated by elastic downward pressure.

[0078] In an optional embodiment, the support surface 11 is provided with multiple support positions, each for placing a urine bag. These multiple support positions are arranged side-by-side horizontally on the support surface 11 of the first support frame 1 to achieve simultaneous positioning and leak detection of multiple products. Corresponding to each support position, an independent detection device 4 is provided; that is, the number of detection devices 4 is the same as the number of support positions, and each detection device 4 is arranged vertically in correspondence with its respective support position, ensuring that each product to be tested is equipped with an independent detection mechanism, thereby achieving multi-station synchronous detection.

[0079] The above-described implementation achieves batch leak testing on a single device by setting up multiple support positions and corresponding detection devices 4, significantly improving testing efficiency and making it suitable for automated quality inspection processes in large-scale production environments. Furthermore, all detection units share the same drive unit 2, resulting in a compact structure, simple control, reduced equipment manufacturing costs and maintenance complexity, and promising prospects for industrial applications.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bag sealing performance testing device, characterized in that, It includes a first support frame (1), a drive device (2), a pressure plate (3), and a detection device (4); The first support frame (1) has a support surface (11). The pressure plate (3) is located above the first support frame (1) in the vertical direction. The pressure plate (3) has a first clearance notch (31) to avoid the protruding structure on the surface of the product. The driving device (2) is connected to the pressure plate (3) and drives the pressure plate (3) to move in the vertical direction. The detection device (4) is connected to the driving device (2) and configured to fill the product with test medium and seal the test medium outlet of the product.

2. The bag sealing performance testing device according to claim 1, characterized in that, The pressure plate (3) has a first mesh plate (5) on the side facing the support surface (11), and / or the support surface (11) has a second mesh plate (6).

3. The bag sealing performance testing device according to claim 2, characterized in that, The detection device (4) has multiple operating ends that move vertically. When the supporting surface (11) is provided with a second mesh plate (6): The supporting surface (11) has a protruding structure (111) facing the pressure plate (3). The protruding structure (111) is arranged opposite to each of the operating ends in the vertical direction. The second mesh plate (6) has a second avoidance notch (61) to avoid the protruding structure (111).

4. The bag sealing performance testing device according to claim 3, characterized in that, The protruding structure (111) includes a first protrusion (1111), which has a recessed area (1112) that avoids the internal structure of the product.

5. The bag sealing performance testing device according to claim 1, characterized in that, The drive device (2) includes a fixed frame (21), a sliding frame (22), and a drive assembly (23); The sliding frame (22) slides in conjunction with the fixed frame (21) in the vertical direction; The drive assembly (23) is mounted on the fixed frame (21), the drive assembly (23) is connected to the sliding frame (22) and drives the sliding frame (22) to slide relative to the fixed frame (21), and the pressure plate (3) is connected to the sliding frame (22); The detection device (4) is connected to the sliding frame (22).

6. The bag sealing performance testing device according to claim 1, characterized in that, The detection device (4) includes a sealing mechanism (41) and an air intake mechanism (42) both connected to the drive device (2).

7. The bag sealing performance testing device according to claim 6, characterized in that, The air intake mechanism (42) includes a first drive member (421), an air intake head (422), a second drive member (423), and a first gripper (424). The first driving member (421) includes a first fixed end (4211) and a first movable end (4212) that slides in a vertical direction with the first fixed end (4211). The first fixed end (4211) is connected to the driving device (2). The air intake head (422) is connected to the first movable end (4212); The second drive member (423) is connected to the first fixed end (4211), the first gripper (424) is connected to the second drive member (423), and the first gripper (424) is located below the air inlet head (422) in the vertical direction.

8. The bag sealing performance testing device according to claim 6, characterized in that, The sealing mechanism (41) includes a third driving member (411), a first sealing head (412), a fourth driving member (413), and a second gripper (414). The third driving member (411) includes a second fixed end (4111) and a second movable end (4112) that slides in a vertical direction with the second fixed end (4111). The second fixed end (4111) is connected to the driving device (2). The first sealing head (412) is connected to the second movable end (4112); The fourth driving member (413) is connected to the second fixed end (4111), and the second gripper (414) is connected to the fourth driving member (413) and the second gripper (414) is located below the first sealing head (412) in the vertical direction.

9. The bag sealing performance testing device according to claim 6, characterized in that, The detection device (4) also includes a second sealing head (43) connected to the drive device (2).

10. The bag sealing performance testing device according to any one of claims 1-9, characterized in that, The supporting surface (11) is provided with multiple supporting positions, and the detection device (4) is configured to correspond one-to-one with the multiple supporting positions in the vertical direction. All of the multiple detection devices (4) are connected to the driving device (2).

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