A packaging bag composite film detection device

Abstract

The application relates to the technical field of composite film detection, in particular to a packaging bag composite film detection device which comprises a box body, an isolation barrel and a rotating shaft, a movable groove is arranged in the rod body of the rotating shaft, a retreat rod is slidably connected in the movable groove, and a rotating disc is arranged at the top end of the retreat rod; a plurality of placing grooves are arranged at the upper end of the rotating disc, a moisture permeable cup is placed in the placing groove, the moisture permeable cup is composed of a cup body, a stand, a sealing ring, a cover plate and a fastening nut, and a film sample to be detected is arranged between the cup body and the cover plate; a first isolation plate and a second isolation plate are fixedly connected to the inner wall of the isolation barrel from top to bottom, a smart weighing sensor is fixedly arranged at the upper end of the first isolation plate, and a smart distance measuring sensor is fixedly arranged at the upper end of the second isolation plate. The application realizes continuous and stable detection of the water vapor transmission rate of the packaging bag composite film through multi-station rotating disc circulation transportation, positioning anti-deviation protection and automatic cleaning of the double smart sensor detection end.

Description

Technical Field

[0001] This invention relates to the field of composite film testing technology, specifically to a packaging bag composite film testing device. Background Technology

[0002] Currently, water vapor transmission rate testing of composite films for packaging bags is one of the important indicators for evaluating their barrier performance, and it is widely used in the quality monitoring of high-barrier packaging materials such as food and pharmaceuticals. Among existing technologies, the cup method (also known as the gravimetric method) is a mature and universally applicable testing method. This method involves sealing the composite film sample to be tested in a permeation cup containing a fixed amount of water or desiccant, then placing the permeation cup in a constant temperature and humidity environment. By periodically measuring the mass change of the permeation cup, the water vapor transmission rate is calculated. With the development of automation technology, many water vapor transmission rate testers have introduced intelligent weighing sensors, which can automatically complete the weighing operation of the permeation cup at preset time intervals, realizing a continuous, unattended testing process, significantly improving testing efficiency and data traceability.

[0003] However, in actual testing, smart weighing sensors are in a constant temperature and humidity environment (especially the high humidity side) for a long time. Their surfaces are prone to condensation of water vapor in the environment, resulting in tiny water vapor or droplets adhering to them. These deposits will increase the sensor's sensing mass, or cause instantaneous fluctuations in the mass reading due to the movement and dripping of water droplets during the weighing process. For barrier detection that requires accurate measurement of mass changes at the milligram or even sub-milligram level, the water vapor or droplets adhering to the surface of the smart weighing sensor will directly cause the weighing result to deviate from the true value, affecting the accuracy of water vapor transmission rate calculation. Summary of the Invention

[0004] The purpose of this invention is to provide a packaging bag composite film detection device to solve the problem mentioned in the background art that water vapor or water droplets adhering to the surface of the intelligent weighing sensor cause the weighing result to deviate from the true value.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a packaging bag composite film testing device, comprising a box body, wherein an isolation barrel is fixedly installed inside the box body; a rotating shaft is rotatably connected inside the isolation barrel, a movable groove is formed in the shaft body, a retraction rod is slidably connected in the movable groove, a turntable is installed at the top of the retraction rod, and a scraper is provided at the upper end of the rotating shaft; a plurality of placement slots are formed at the upper end of the turntable, and a moisture-permeable cup is placed in the placement slot, the moisture-permeable cup being composed of a cup body, a column, a sealing ring, a cover plate, and a fastening nut, and a film sample to be tested is placed between the cup body and the cover plate; a first isolation plate and a second isolation plate are fixedly connected sequentially from top to bottom on the inner wall of the isolation barrel, both the first isolation plate and the second isolation plate being located below the turntable; an intelligent weighing sensor is fixedly installed at the upper end of the first isolation plate, and an intelligent distance measuring sensor is fixedly installed at the upper end of the second isolation plate.

[0006] Furthermore, a lid is rotatably connected to the upper end of the box, and an operation panel is fixedly installed on the outer side wall of the box.

[0007] Furthermore, the column is fixedly connected to the upper end of the skirt of the cup body, the sealing ring is attached to the upper end of the skirt of the cup body, the cover plate passes through the column and is engaged with the upper end of the cup body, and the fastening nut is threadedly connected to the column.

[0008] Furthermore, a first drive unit and a second drive unit are fixedly installed on the bottom wall of the isolation barrel, the bottom end of the rotating shaft is fixedly connected to the output end of the first drive unit, and a stop block is fixedly connected to the top end of the rotating shaft.

[0009] Furthermore, a slider is slidably connected in the movable groove, the bottom end of the retraction rod is fixedly connected to the upper end of the slider, a top block is fixedly installed at the top end of the retraction rod, a threaded rod is fixedly installed at the upper end of the top block, the turntable is placed on the upper end of the top block, and a fixing screw block is threadedly connected to the threaded rod.

[0010] Furthermore, an L-shaped annular groove is fixedly connected to the bottom edge of the turntable, an L-shaped rod is slidably connected in the L-shaped annular groove, a base plate is fixedly connected to the bottom end of the L-shaped rod, a lifting rod is fixedly connected to the bottom end of the base plate, the lifting rod passes through the first isolation plate and the second isolation plate in sequence, a spring is fixedly connected between the base plate and the first isolation plate, and the spring is sleeved on the body of the lifting rod.

[0011] Furthermore, the bottom end of the lifting rod is fixedly connected to the output end of the second drive unit, and a receiving plate is fixedly connected to the lifting rod body located between the first isolation plate and the second isolation plate, with the intelligent ranging sensor located directly below the receiving plate.

[0012] Furthermore, a fixing plate is fixedly connected to the rotating shaft located between the first isolation plate and the second isolation plate. Multiple through slots are provided at the edge of the fixing plate. A fixing rod is fixedly connected to the bottom surface of the fixing plate. A scraper is fixedly connected to the bottom end of the fixing rod. When the rotating shaft rotates, the scraper comes into contact with the transmitting end of the intelligent ranging sensor.

[0013] Furthermore, the scraper block is offset from the through groove, and the opening diameter of the through groove is slightly larger than the diameter of the receiving plate.

[0014] Furthermore, a mounting plate is fixedly connected to the ring of the stop block, and the scraper is fixedly installed on the bottom surface of the mounting plate. When the rotating shaft rotates, the scraper is in contact with the upper end of the intelligent weighing sensor.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This packaging bag composite film detection device drives the turntable and its moisture-permeable cup to rotate via a rotating shaft. The silicone scraper and sponge scraper rotate synchronously with the rotating shaft, allowing the silicone scraper and sponge scraper to clean the detection ends of the two smart sensors at the same time, thereby removing moisture and dust and making the detection data accurate and reliable.

[0016] 2. This packaging bag composite film detection device achieves precise turntable rotation angle and stable placement and weighing of the moisture permeation cup through the transmission cooperation of the square retraction rod and the stop block, as well as the positioning and limiting of the through groove and receiving plate on the fixed plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the isolation bucket of the present invention; Figure 3 A cross-sectional view of the isolation barrel of the present invention. Figure 1 ; Figure 4 A cross-sectional view of the isolation barrel of the present invention. Figure 2 ; Figure 5 A cross-sectional view of the isolation barrel of the present invention. Figure 3 ; Figure 6 For the present invention Figure 5 Enlarged structural diagram of part A in the middle; Figure 7 This is a schematic diagram of the structure of the fixing plate of the present invention; Figure 8 This is a cross-sectional view of the rotating shaft of the present invention; Figure 9 A cross-sectional view of the isolation barrel of the present invention. Figure 4 ; Figure 10This is an exploded view of the moisture-permeable cup of the present invention; Figure 11 This is a schematic diagram of the structure of the turntable of the present invention.

[0018] In the attached diagram, the components represented by each number are as follows: 1. Box body; 2. Box lid; 3. Control panel; 4. Isolation tank; 5. Moisture permeation cup; 501. Cup body; 502. Column; 503. Sealing ring; 504. Cover plate; 505. Fastening nut; 6. Turntable; 601. Placement slot; 7. Fixing screw block; 8. L-shaped annular groove; 9. First isolation plate; 10. Second isolation plate; 11. First drive unit; 12. Second drive unit; 13. Rotating shaft; 1301. Movable groove; 302. Stop block; 14. Intelligent weighing sensor; 15. Fixing plate; 1501. Through slot; 16. Lifting rod; 17. Receiving plate; 18. Spring; 19. L-shaped rod; 20. Base plate; 21. Fixing rod; 22. Scraper block; 23. Mounting plate; 24. Scraper strip; 25. Retraction rod; 2501. Slider; 2502. Top block; 2503. Threaded rod; 26. Intelligent distance measuring sensor; 27. Membrane sample to be tested. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides a technical solution: such as Figure 1 - Figure 11 The packaging bag composite film testing device shown includes a box body 1, in which an isolation bucket 4 is fixedly installed; a rotating shaft 13 is rotatably connected inside the isolation bucket 4, and a movable groove 1301 is opened in the shaft body of the rotating shaft 13. A retraction rod 25 is slidably connected in the movable groove 1301, and a turntable 6 is installed at the top of the retraction rod 25. A scraper 24 is provided at the upper end of the rotating shaft 13; a plurality of placement slots 601 are opened at the upper end of the turntable 6, and a moisture permeation cup 5 is placed in the placement slot 601. The moisture permeation cup 5 is composed of a cup body 5. The device consists of a column 502, a sealing ring 503, a cover plate 504, and a fastening nut 505. A test sample 27 is provided between the cup body 501 and the cover plate 504. The inner wall of the isolation bucket 4 is fixedly connected with a first isolation plate 9 and a second isolation plate 10 from top to bottom. Both the first isolation plate 9 and the second isolation plate 10 are located below the turntable 6. An intelligent weighing sensor 14 is fixedly installed at the upper end of the first isolation plate 9, and an intelligent distance measuring sensor 26 is fixedly installed at the upper end of the second isolation plate 10.

[0021] In this invention, the box body 1 serves as the external protective shell of the entire device, enclosing all the detection components inside and reducing the interference of external environmental temperature and humidity on the detection process. The isolation barrel 4 is fixedly installed in the center of the box body 1, forming an independent sealed detection space inside the box body 1, allowing the detection process of the moisture permeation cup 5 to be in a stable environment. The rotating shaft 13 is vertically installed in the center of the isolation barrel 4, and can rotate freely around its own axis. The movable groove 1301 is vertically opened along the shaft of the rotating shaft 13. The retraction rod 25 is inserted inside the movable groove 1301, and can slide up and down along the movable groove 1301, and can also rotate synchronously with the rotating shaft 13. The turntable 6 is horizontally installed at the top of the retraction rod 25, and completes the two actions of rotation and lifting with the retraction rod 25. The scraper 24 is installed at the top of the rotating shaft 13 and rotates synchronously with the rotating shaft 13.

[0022] In this invention, placement grooves 601 are evenly distributed on the upper surface of the turntable 6, and their shape matches the bottom contour of the permeation cup 5. The permeation cup 5 can be directly placed inside the placement grooves 601. The skirt of the permeation cup 5 rests on the upper surface of the turntable 6, making the permeation cup 5 more stable. The cup body 501 is the main structure of the permeation cup 5, and its interior is used to hold the water required for testing. The column 502 is fixed to the upper end of the skirt of the cup body 501, which serves as a positioning and support function. The sealing ring 503 is installed in the sealing groove at the upper end of the skirt of the cup body 501, which serves as a sealing and water-proof function. The cover plate 504 passes through the column 502 and covers the upper end of the membrane sample 27 to be tested. The fastening nut 505 is threaded onto the column 502. After tightening, the cover plate 504 can be pressed down, thereby firmly fixing the membrane sample 27 to be tested to the upper end of the cup body 501, while ensuring the sealing effect and preventing water leakage.

[0023] In this invention, the first isolation plate 9 and the second isolation plate 10 are horizontally fixed on the inner wall of the isolation barrel 4 from top to bottom, both located below the turntable 6, dividing the lower part of the isolation barrel 4 into two independent spaces; the intelligent weighing sensor 14 is fixedly installed on the upper end face of the first isolation plate 9, used to detect the weight of the moisture permeation cup 5, and calculate the water vapor transmission rate of the membrane sample 27 to be tested by the weight change; the intelligent distance sensor 26 is fixedly installed on the upper end face of the second isolation plate 10, used to detect the moving distance of the lifting component, ensuring the accurate lifting position of the moisture permeation cup 5.

[0024] Furthermore, the isolation tank 4 also integrates constant temperature and humidity control components (including heating unit, cooling unit, humidifier, dehumidifier, temperature and humidity sensor, etc.).

[0025] refer to Figure 1 - Figure 11A lid 2 is rotatably connected to the upper end of the box body 1, and an operation panel 3 is fixedly installed on the outer side wall of the box body 1; a column 502 is fixedly connected to the upper end of the skirt of the cup body 501, a sealing ring 503 is fitted to the upper end of the skirt of the cup body 501, a cover plate 504 passes through the column 502 and is engaged with the upper end of the cup body 501, and a fastening nut 505 is threadedly connected to the column 502; a first drive unit 11 and a second drive unit 12 are fixedly installed on the bottom wall of the isolation bucket 4, the bottom end of the rotating shaft 13 is fixedly connected to the output end of the first drive unit 11, and a stop block 1302 is fixedly connected to the top end of the rotating shaft 13; A slider 2501 is slidably connected within the moving groove 1301. The bottom end of the retraction rod 25 is fixedly connected to the upper end of the slider 2501. A top block 2502 is fixedly installed at the top of the retraction rod 25. A threaded rod 2503 is fixedly installed at the upper end of the top block 2502. The turntable 6 is placed on the upper end of the top block 2502. A fixing screw block 7 is threadedly connected to the threaded rod 2503. An L-shaped annular groove 8 is fixedly connected to the bottom edge of the turntable 6. An L-shaped rod 19 is slidably connected within the L-shaped annular groove 8. A base plate 20 is fixedly connected to the bottom end of the L-shaped rod 19. A lifting rod 16 is fixedly connected to the bottom end of the base plate 20. The lifting rod 16 passes sequentially through the first isolation plate 9 and the second isolation plate 10. A spring 18 is fixedly connected between the base plate 20 and the first isolation plate 9, and the spring 18 is sleeved on the rod body of the lifting rod 16. The bottom end of the lifting rod 16 is fixedly connected to the output end of the second drive unit 12. A receiving plate 17 is fixedly connected to the rod body of the lifting rod 16 located between the first isolation plate 9 and the second isolation plate 10. The intelligent ranging sensor 26 is located directly below the receiving plate 17. A fixing plate 15 is fixedly connected to the rotating shaft 13 located between the first isolation plate 9 and the second isolation plate 10. The edge of the fixing plate 15... Multiple through slots 1501 are provided. A fixing rod 21 is fixedly connected to the bottom surface of the fixing plate 15. A scraper block 22 is fixedly connected to the bottom end of the fixing rod 21. When the rotating shaft 13 rotates, the scraper block 22 is in contact with the transmitting end of the intelligent ranging sensor 26. The scraper block 22 is offset from the through slot 1501. The opening diameter of the through slot 1501 is slightly larger than the diameter of the receiving plate 17. A mounting plate 23 is fixedly connected to the ring of the stop block 1302. The scraper strip 24 is fixedly installed on the bottom surface of the mounting plate 23. When the rotating shaft 13 rotates, the scraper strip 24 is in contact with the upper end of the intelligent weighing sensor 14.

[0026] In this invention, the lid 2 is hinged to the upper end of the box body 1 and can be freely flipped open or closed. When open, it facilitates the operator to insert or remove the permeation cup 5, and when closed, it creates a sealed environment inside the box body 1. The operation panel 3 is fixed to the outer wall of the box body 1. The operator can start or stop the device, set relevant detection parameters, and view real-time detection data through the operation panel 3.

[0027] In this invention, the first drive unit 11 is fixedly installed at the bottom center of the isolation barrel 4 to provide power for the rotation of the rotating shaft 13. The second drive unit 12 is also fixed at the bottom of the isolation barrel 4 to provide power for the lifting rod 16 to rise and fall. The stop block 1302 is fixed at the top of the rotating shaft 13 and rotates synchronously with the rotating shaft 13. It is used to connect the mounting plate 23 and provide an installation position for the scraper 24. The stop block 1302 cooperates with the slider 2501 to limit the retraction rod 25. The first drive unit 11 is a servo motor and the second drive unit 12 is a cylinder.

[0028] In this invention, the slider 2501 is attached to the inner wall of the movable groove 1301 and can slide smoothly up and down along the movable groove 1301. The bottom end of the retraction rod 25 is fixed to the slider 2501, and the slider 2501 enables up and down sliding. The top block 2502 is fixed to the top of the retraction rod 25 and serves to support the turntable 6. The threaded rod 2503 is vertically fixed to the upper end of the top block 2502. After passing through the center of the turntable 6, it is tightened with the fixing screw block 7 to firmly fix the turntable 6 to the upper end of the top block 2502, so that the turntable 6 and the retraction rod 25 form a whole.

[0029] In this invention, the L-shaped annular groove 8 is fixed at the edge of the bottom surface of the turntable 6. The upper end of the L-shaped rod 19 is inserted into the L-shaped annular groove 8 and can slide freely within the L-shaped annular groove 8 without affecting the rotation of the turntable 6. The base plate 20 is fixed to the bottom end of the L-shaped rod 19, and the lifting rod 16 is fixed to the bottom center of the base plate 20. When the lifting rod 16 moves upward, it can drive the turntable 6 to move upward through the base plate 20 and the L-shaped rod 19. The spring 18 is sleeved on the body of the lifting rod 16, with its upper end abutting against the bottom surface of the base plate 20 and its lower end abutting against the upper surface of the first isolation plate 9. When the lifting rod 16 moves downward, the spring 18 is compressed. After losing the downward pulling force (i.e., the second drive part 12 stops applying the downward pulling force, that is, the second drive part 12 moves upward), the spring 18 can automatically reset, driving the turntable 6 back to the initial position. The part of the L-shaped rod 19 placed in the L-shaped annular groove 8 is coated with a wear-resistant coating.

[0030] In this invention, the receiving plate 17 is horizontally fixed to the body of the lifting rod 16, directly above the intelligent ranging sensor 26. The intelligent ranging sensor 26 detects the lifting distance of the receiving plate 17 by transmitting signals to and receiving return signals, thereby determining the lifting position of the moisture-permeable cup 5. The fixing plate 15 is fixed to the body of the rotating shaft 13 and rotates synchronously with the rotating shaft 13. The grooves 1501 are evenly opened at the edge of the fixing plate 15 to provide a passage for the receiving plate 17 to pass through. The fixing rod 21 is vertically fixed to the bottom surface of the fixing plate 15, and the scraper 22 is fixed to the bottom end of the fixing rod 21. When the rotating shaft 13 rotates, the scraper 22 slides against the transmitting end of the intelligent ranging sensor 26 to clean the moisture and dust from the transmitting end.

[0031] In this invention, the scraper 22 and the through groove 1501 are staggered to avoid interference. The opening size of the through groove 1501 is slightly larger than that of the receiving plate 17 to ensure that the receiving plate 17 can pass through smoothly. The mounting plate 23 is fixed to the ring of the stop block 1302, and the scraper 24 is fixed to the bottom surface of the mounting plate 23. When the rotating shaft 13 rotates, the scraper 24 will slide against the upper surface of the intelligent weighing sensor 14 to clean the water vapor and water droplets on the upper surface.

[0032] Furthermore, the retraction lever 25 adopts a square rod body, and the opening shape at the top of the rotating shaft 13 is perfectly matched with the cross-sectional shape of the retraction lever 25. When the rotating shaft 13 rotates, it can stably drive the retraction lever 25 to rotate without relative slippage, ensuring the precise rotation angle of the turntable 6.

[0033] The upper end of the turntable 6 has multiple sets of placement slots 601, which are evenly distributed around the center of the turntable 6. Multiple moisture permeation cups 5 can be placed at the same time to achieve continuous cyclic detection and improve the overall detection efficiency.

[0034] Furthermore, the scraper 22 is made of silicone material, which is soft and wear-resistant. When rotating for cleaning, it will not scratch the transmitter of the intelligent ranging sensor 26, and can also clean the water vapor and dust attached to the surface. The scraper 24 is made of water-absorbing sponge material, which can absorb water vapor and water droplets on the upper surface of the intelligent weighing sensor 14, so as to avoid water vapor affecting the weighing accuracy.

[0035] Spring 18 remains vertical during extension and retraction, preventing tilting and providing a stable restoring force for turntable 6. This buffers rigid impacts during lifting and extending the service life of the components.

[0036] Furthermore, the upper end of the L-shaped rod 19 fits tightly against the inner wall of the L-shaped annular groove 8, preventing any shaking during sliding and ensuring that the turntable 6 is subjected to uniform force when it is raised or lowered, so that the permeable cup 5 will not become skewed.

[0037] Furthermore, each mounting plate 23 and the scraper 24 are located below the blank space between each pair of adjacent placement slots 601 (i.e., the moisture permeation cup 5). In this way, there will be no movement interference between the scraper 24 and the moisture permeation cup 5. That is, when the scraper 24 scrapes the upper end of the intelligent weighing sensor 14, the moisture permeation cup 5 is not located above the intelligent weighing sensor 14, and when the intelligent weighing sensor 14 detects the moisture permeation cup 5, the scraper 24 does not contact the intelligent weighing sensor 14.

[0038] Working principle: Before using this device to test the water vapor transmission rate of the composite film of the packaging bag, the assembly preparation of the moisture permeation cup 5 needs to be completed first. First, pour the water required for the test into the cup body 501 of the moisture permeation cup 5. Cut the film sample 27 to be tested according to the size of the opening at the top of the cup body 501, so that the size of the film sample 27 to be tested is completely matched with the opening of the cup body 501. Place the cut film sample 27 to be tested flat on the top of the cup body 501. The sealing ring 503 is installed in the sealing groove at the top of the cup body 501. Then, pass the cover plate 504 through the column 502 and cover the top of the film sample 27 to be tested. Finally, tighten the fastening nut 505 on the column 502. After tightening, the cover plate 504 will press down on the film sample 27 to be tested, firmly fixing the film sample 27 to the top of the cup body 501, and completing the sealing treatment to prevent water leakage from the cup body 501.

[0039] After assembling the moisture permeation cup 5, flip open the lid 2 at the top of the box 1 and place the assembled moisture permeation cup 5 one by one into the placement slot 601 at the top of the turntable 6. After the moisture permeation cup 5 is placed, its skirt will rest stably on the upper surface of the turntable 6, ensuring the stability of the moisture permeation cup 5. After all the moisture permeation cups 5 have been placed, flip open and close the lid 2 to create a sealed testing environment inside the box 1, ready to begin the formal testing.

[0040] After the detection begins, the device is activated via the operation panel 3, and the first drive unit 11 starts operating. The output end of the first drive unit 11 drives the rotating shaft 13 to rotate stably around its own axis. The retraction rod 25 is a square rod, and the opening at the top of the rotating shaft 13 matches the shape of the retraction rod 25. When the rotating shaft 13 rotates, it stably drives the retraction rod 25 to rotate synchronously without slippage. When the retraction rod 25 rotates, it drives the turntable 6 to rotate synchronously through the top block 2502 at the top. The moisture-permeable cup 5 in the placement slot 601 at the upper end of the turntable 6 rotates together with the turntable 6. Multiple sets of placement slots 601 are evenly distributed on the turntable 6. In the initial state, one of the moisture-permeable cups 5 will rotate precisely to the position directly above the intelligent weighing sensor 14.

[0041] When the permeation cup 5 rotates to directly above the intelligent weighing sensor 14, the first drive unit 11 stops rotating, and the second drive unit 12 starts operating. The output end of the second drive unit 12 pulls the lifting rod 16 downward, and the receiving plate 17 on the lifting rod 16 moves downward synchronously. When the lifting rod 16 moves downward, it drives the base plate 20 to move downward synchronously. When the base plate 20 moves downward, it pulls the L-shaped rod 19 downward synchronously, while compressing the spring 18. When the L-shaped rod 19 moves downward, it pulls the L-shaped annular groove 8 on the bottom surface of the turntable 6, thereby driving the turntable 6, the retraction rod 25, and the slider 2501 to move downward along the movable groove 1301. After the turntable 6 moves downward to the designated position, the bottom of the permeation cup 5 will fall smoothly onto the weighing end of the intelligent weighing sensor 14 (at this time, the turntable 6 needs to continue to move down two to five millimeters to avoid the turntable 6 exerting a lifting force on the permeation cup 5, which would affect the measurement accuracy. This process is monitored and calibrated by the intelligent distance sensor 26). The intelligent weighing sensor 14 detects the weight of the permeation cup 5 and records the detection data to calculate the water vapor transmission rate of the membrane sample 27 to be tested.

[0042] After the weighing test is completed, the second drive unit 12 drives the lifting rod 16 to move upward and reset. The spring 18 automatically resets after losing pressure, pushing the base plate 20 and L-shaped rod 19 upward, which in turn drives the turntable 6 to move upward back to its initial position. The bottom of the moisture-permeable cup 5 detaches from the upper surface of the intelligent weighing sensor 14 and returns to the placement slot 601 of the turntable 6. Then, the first drive unit 11 restarts, driving the turntable 6 to continue rotating at a specified angle. The next adjacent moisture-permeable cup 5 will precisely rotate to be directly above the intelligent weighing sensor 14. The above lifting and weighing steps are repeated to complete the detection of the next moisture-permeable cup 5, thus achieving continuous automatic detection of multiple moisture-permeable cups 5 in this cycle.

[0043] The device features a precise positioning and protection structure. A fixing plate 15 is fixed to the shaft of the rotating shaft 13 and rotates synchronously with it. The number and position of the through slots 1501 and placement slots 601 on the fixing plate 15 correspond. Only when the rotating shaft 13 drives the turntable 6 to rotate at a specified angle, and the permeable cup 5 is completely above the intelligent weighing sensor 14, will the through slot 1501 precisely rotate to the underside of the receiving plate 17. At this point, the receiving plate 17 can smoothly pass through the through slot 1501 and move downwards, allowing the turntable 6 to normally move the permeable cup 5 downwards for weighing. If the rotating shaft 13 and the turntable 6 do not rotate to the specified angle, and the permeable cup 5 is not aligned with the intelligent weighing sensor 14, the fixing plate 15 will directly block the receiving plate 17. The receiving plate 17 cannot move downwards, and the turntable 6 cannot move the permeable cup 5 downwards, preventing the permeable cup 5 from tilting and falling onto the intelligent weighing sensor 14, ensuring accurate weighing and stable placement of the permeable cup 5.

[0044] The intelligent ranging sensor 26 is fixed to the upper end of the second isolation plate 10 and always faces the receiving plate 17. When the receiving plate 17 moves downward, the intelligent ranging sensor 26 monitors the descent distance of the receiving plate 17 in real time and precisely controls the descent height of the permeable cup 5 by controlling the descent distance, ensuring that the permeable cup 5 lands smoothly on the intelligent weighing sensor 14 without impact or instability. When the receiving plate 17 moves upward, the intelligent ranging sensor 26 monitors the ascent distance in real time and precisely controls the ascent height of the permeable cup 5, ensuring that the permeable cup 5 completely detaches from the intelligent weighing sensor 14 and smoothly returns to the placement slot 601.

[0045] Throughout the rotation detection process, the automatic cleaning structure operates synchronously. When the rotating shaft 13 rotates, it drives the fixing plate 15 and the fixing rod 21 to rotate synchronously. The scraper 22 at the bottom of the fixing rod 21 continuously slides against the transmitting end of the intelligent ranging sensor 26, cleaning the water vapor and dust adhering to the transmitting end and ensuring the monitoring accuracy of the intelligent ranging sensor 26. At the same time, the stop 1302 at the top of the rotating shaft 13 drives the mounting plate 23 and the scraper 24 to rotate synchronously. The scraper 24 continuously slides against the upper surface of the intelligent weighing sensor 14, adsorbing and cleaning the water vapor and water droplets on the upper surface of the intelligent weighing sensor 14, avoiding water vapor from affecting the accuracy of the weighing data, and ensuring accurate and stable detection results throughout the process.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A packaging bag composite film detection device, comprising a box body (1), characterized in that: An isolation bucket (4) is fixedly installed inside the box (1); The isolation barrel (4) is rotatably connected to a rotating shaft (13). The shaft (13) has a movable groove (1301) inside its rod. A retraction rod (25) is slidably connected inside the movable groove (1301). A turntable (6) is installed at the top of the retraction rod (25). A scraper (24) is provided at the upper end of the rotating shaft (13). The upper end of the turntable (6) is provided with several placement slots (601), and a moisture permeation cup (5) is placed in the placement slot (601). The moisture permeation cup (5) is composed of a cup body (501), a column (502), a sealing ring (503), a cover plate (504), and a fastening nut (505). A membrane sample (27) to be tested is provided between the cup body (501) and the cover plate (504). The inner wall of the isolation barrel (4) is fixedly connected with a first isolation plate (9) and a second isolation plate (10) from top to bottom. The first isolation plate (9) and the second isolation plate (10) are both located below the turntable (6). A smart weighing sensor (14) is fixedly installed on the upper end of the first isolation plate (9), and a smart distance sensor (26) is fixedly installed on the upper end of the second isolation plate (10). A stop (1302) is fixedly connected to the top of the rotating shaft (13). A fixing plate (15) is fixedly connected to the rotating shaft (13) located between the first isolation plate (9) and the second isolation plate (10). Multiple through slots (1501) are opened at the edge of the fixing plate (15). A fixing rod (21) is fixedly connected to the bottom surface of the fixing plate (15). A scraper (22) is fixedly connected to the bottom end of the fixing rod (21). When the rotating shaft (13) rotates, the scraper (22) is in contact with the transmitting end of the intelligent ranging sensor (26). An mounting plate (23) is fixedly connected to the ring of the stop block (1302), and the scraper (24) is fixedly installed on the bottom surface of the mounting plate (23). When the rotating shaft (13) rotates, the scraper (24) is in contact with the upper end of the intelligent weighing sensor (14).

2. The packaging bag composite film detection device according to claim 1, characterized in that: The upper end of the box (1) is rotatably connected to a lid (2), and an operation panel (3) is fixedly installed on the outer side wall of the box (1).

3. The packaging bag composite film detection device according to claim 1, characterized in that: The column (502) is fixedly connected to the upper end of the skirt of the cup body (501), the sealing ring (503) is attached to the upper end of the skirt of the cup body (501), the cover plate (504) passes through the column (502) and is engaged with the upper end of the cup body (501), and the fastening nut (505) is threadedly connected to the column (502).

4. The packaging bag composite film detection device according to claim 1, characterized in that: The first drive unit (11) and the second drive unit (12) are fixedly installed on the bottom wall of the isolation barrel (4), and the bottom end of the rotating shaft (13) is fixedly connected to the output end of the first drive unit (11).

5. The packaging bag composite film detection device according to claim 4, characterized in that: A slider (2501) is slidably connected in the movable groove (1301). The bottom end of the retraction rod (25) is fixedly connected to the upper end of the slider (2501). A top block (2502) is fixedly installed on the top end of the retraction rod (25). A threaded rod (2503) is fixedly installed on the upper end of the top block (2502). The turntable (6) is placed on the upper end of the top block (2502). A fixing screw block (7) is threadedly connected to the threaded rod (2503).

6. The packaging bag composite film detection device according to claim 1, characterized in that: An L-shaped groove (8) is fixedly connected to the bottom edge of the turntable (6). An L-shaped rod (19) is slidably connected inside the L-shaped groove (8). A base plate (20) is fixedly connected to the bottom end of the L-shaped rod (19). A lifting rod (16) is fixedly connected to the bottom end of the base plate (20). The lifting rod (16) passes through the first isolation plate (9) and the second isolation plate (10) in sequence. A spring (18) is fixedly connected between the base plate (20) and the first isolation plate (9). The spring (18) is sleeved on the rod body of the lifting rod (16).

7. The packaging bag composite film detection device according to claim 6, characterized in that: The bottom end of the lifting rod (16) is fixedly connected to the output end of the second drive unit (12). A receiving plate (17) is fixedly connected to the lifting rod (16) located between the first isolation plate (9) and the second isolation plate (10). The intelligent distance sensor (26) is located directly below the receiving plate (17).

8. The packaging bag composite film detection device according to claim 1, characterized in that: The scraper (22) is offset from the through groove (1501), and the opening diameter of the through groove (1501) is slightly larger than the diameter of the receiving plate (17).

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