A packaging carton air permeability detection equipment

Abstract

The present application relates to the technical field of air permeability detection, and specifically relates to a packaging carton air permeability detection device, which comprises a machine table and further comprises: an inner environment regulation and detection structure connected with the machine table, the inner environment regulation and detection structure comprising a bearing charging part fixedly connected with the machine table, the bearing charging part being connected with multiple groups of air pressure and humidity detection and control parts; and an outer environment regulation and detection structure connected with the machine table. The present application detects the air permeability of a single group of cartons through the cooperation of the inner environment regulation and detection structure and the outer environment regulation and detection structure, and can also select to detect the air permeability of cartons in a stacked and stacked state, so as to facilitate the analysis of the influence of different stacking conditions on the air permeability of the cartons. The inner environment regulation and detection structure and the outer environment regulation and detection structure respectively regulate and collect data of the inner and outer environments of the cartons, so as to analyze the influence of humidity and air pressure on the air permeability of the cartons and the air permeability of the cartons under different humidity and air pressure, thereby improving the applicability of the present application.

Description

Technical Field

[0001] This invention relates to the field of air permeability testing technology, specifically to an air permeability testing device for packaging cartons. Background Technology

[0002] Packaging cartons play a crucial role in logistics, warehousing, and transportation. Their breathability directly affects the quality and safety of the goods inside. For example, if the breathability of the packaging carton is poor during the transportation of food, medicine, or certain sensitive materials, the goods may become damp, moldy, or deteriorate, leading to quality problems or even safety hazards.

[0003] Typical air permeability testing for packaging cartons has a limited function. It usually involves placing a group of cartons in a sealed space and measuring the environmental changes in the external space after sealing to determine air permeability. However, this type of testing equipment is often unrealistic. First, packaging cartons are often stacked, and existing equipment cannot simulate the situation of stacked cartons, making the test results inaccurate. Second, because different items are packaged inside the cartons, these items will release or absorb gases or water during actual use, causing changes in air pressure and humidity inside the cartons. The external environment of the cartons also changes with the seasons, but typical air permeability testing equipment cannot regulate the internal and external environments of the packaging cartons. Summary of the Invention

[0004] The purpose of this invention is to provide a device for testing the air permeability of packaging cartons, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A packaging carton air permeability testing device includes a machine base, a control console fixedly connected to the machine base, a first wireless communication module fixedly connected to the machine base, and further includes:

[0007] An internal environment control and detection structure connected to the machine tool includes a carrier charging unit fixedly connected to the machine tool. The carrier charging unit is movably connected to multiple sets of air pressure and humidity detection and control units. The carrier charging unit is used to provide power to the air pressure and humidity detection and control units and to provide limit support for the air pressure and humidity detection and control units. The air pressure and humidity detection and control units are communicatively connected to a first wireless communication module. The air pressure and humidity detection and control units can adapt to packaging cartons of different sizes by adjusting the detection position and spray height.

[0008] An external environment control and detection structure connected to a machine tool includes two sets of first active telescopic frames fixedly connected to the machine tool. The moving ends of the two sets of first active telescopic frames are jointly fixedly connected to an upper pressure platform. The upper pressure platform is fixedly connected to multiple sets of first air pressure probes and multiple sets of first humidity probes. The upper pressure platform is connected to an air pressure and humidity regulating unit. The machine tool is fixedly connected to a lower support platform, which is located below the upper pressure platform. Four sets of first side pressure mechanisms are installed at equal angles along the circumference at one end of the upper pressure platform facing the lower support platform. Four sets of second side pressure mechanisms are installed at equal angles along the circumference at one end of the lower support platform facing the upper pressure platform. The first and second side pressure mechanisms have the same structure. The machine tool is fixedly connected to multiple sets of second active telescopic frames. The moving ends of the multiple sets of second active telescopic frames are jointly fixedly connected to a transparent cover. The transparent cover is slidably connected to the lower support platform and movably connected to the upper pressure platform.

[0009] As a further improvement of the present invention: the carrying charging unit includes a carrying platform fixedly connected to the machine tool, and a slot is provided on the carrying platform for movably connecting to the air pressure and humidity detection and control unit, and a first wireless charging component is fixedly installed in the slot.

[0010] As a further improvement of the present invention: the air pressure and humidity detection and control unit includes a support platform movably connected to the card slot, an independent power supply is fixedly installed inside the support platform, a second wireless charging component is fixedly connected to the support platform, the second wireless charging component is used to receive electrical energy transmitted by the first wireless charging component, a locking member is threadedly connected to the support platform, the locking member abuts against a longitudinal sliding frame slidably connected to the support platform, four sets of fixed frames are fixedly connected to the longitudinal sliding frame along the circumference, each set of fixed frames is fixedly connected to two sets of electric telescopic frames, and the moving ends of the two sets of electric telescopic frames are jointly fixedly connected to a connecting... The connecting frame is fixedly connected to two symmetrically arranged guide frames. Each guide frame is hinged to a swing frame. One swing frame is fixedly connected to a second humidity probe, and the other swing frame is fixedly connected to a second air pressure probe. The swing frame is hinged to a hinge plate, and the hinge plate is hinged to a sliding sleeve that is slidably connected to the guide frame. The sliding sleeve is fixedly connected to two symmetrically arranged rectangular blocks, and the rectangular blocks are slidably connected to rectangular sleeves. The four sets of rectangular sleeves are jointly fixedly connected to a bridge frame. The bridge frame is fixedly connected to an outer edge frame that is fixedly connected to a support platform. The longitudinal movement frame is fixedly connected to a spray assembly.

[0011] As a further improvement of the present invention: the spray assembly includes a central platform fixedly connected to the longitudinal shift frame, four independent water tanks are fixedly connected to the central platform, a manifold is fixedly installed at the lower end of each independent water tank, the four manifolds are fixedly connected to a cross-shaped diverter fitting, an absorbent cotton layer is fixedly installed inside the cross-shaped diverter fitting, multiple sleeves are fixedly connected to the cross-shaped diverter fitting, an ultrasonic microporous atomizing plate is fixedly installed at the end of the sleeve away from the cross-shaped diverter fitting, an elastic gasket is fixedly installed inside the sleeve, the elastic gasket abuts against the absorbent cotton layer, and the absorbent cotton layer abuts against the ultrasonic microporous atomizing plate.

[0012] As a further improvement of the present invention: both the first side-pressing mechanism and the second side-pressing mechanism include a concave platform. The concave platform of the first side-pressing mechanism is fixedly connected to the upper pressure platform, and the concave platform of the second side-pressing mechanism is fixedly connected to the lower support platform. The concave platform is fixedly connected to multiple sets of third active telescopic frames. The moving ends of the multiple sets of third active telescopic frames are jointly fixedly connected to a cross frame. The cross frame is fixedly connected to a push frame. The cross frame is fixedly connected to a dual-output shaft motor. The output end of the dual-output shaft motor is fixedly connected to a lead screw. The lead screw is threadedly connected to a shaft frame. The shaft frame is slidably connected to the cross frame. The shaft frame is rotatably connected to a rotating shaft. The rotating shaft is fixedly connected to a wing frame. Both ends of the rotating shaft are fixedly connected to a linkage shaft through a support plate. Each set of linkage shafts is slidably connected to a set of guide plates. The guide plates are provided with Z-shaped grooves that are slidably connected to the linkage shafts.

[0013] As a further improvement of the present invention: the air pressure and humidity regulating unit includes a reversing valve fixedly connected to the upper pressure platform, the reversing valve is connected to a humidifier through a first hose, the humidifier is fixedly connected to the machine base, and the reversing valve is connected to an integrated dual-purpose air pump through a second hose, the integrated dual-purpose air pump is fixedly connected to the machine base.

[0014] As a further improvement of the present invention: both the upper pressure platform and the lower support platform are fixedly connected with sealing strips, and the sealing strips are movably connected to the transparent cover.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In use, if only a single set of cartons is to be inspected, the air pressure and humidity control unit is placed inside the set of cartons to be inspected. The cartons are then sealed and placed on the lower support platform. The second active telescopic frame drives the transparent cover to rise, aligning it with the upper pressure platform. The air pressure and humidity control unit regulates the air pressure and humidity within the space enclosed by the transparent cover, upper pressure platform, and lower support platform. Furthermore, it interacts with the air pressure and humidity control unit inside the cartons via a first wireless communication module, thereby adjusting the air pressure and humidity of the cartons being inspected. The system measures and collects data on the humidity and air pressure inside the cardboard box. A first air pressure probe and a first humidity probe continuously monitor the air pressure and humidity outside the cardboard box, thus collecting data on the cardboard box's air permeability. To conduct a simulated air permeability experiment while the cardboard boxes are stacked, each group of boxes needs to have an air pressure and humidity detection unit placed inside. The boxes are then stacked on a lower support platform, and both the first and second side-pressure mechanisms apply pressure to the outer wall of the stacked boxes to stabilize the stack and ensure a uniform height. The cartons are tightly pressed together, and the height of the first side-pressing mechanism is adjusted by moving the upper pressure table through the first active telescopic frame. As the first side-pressing mechanism moves downward, it provides downward friction to the cartons, replacing the downward pressure experienced by the cartons in actual stacking. This simulates a situation where all four circumferential and top surfaces of the cartons being tested are pressed against the cartons, and the cartons contain items. Because the cartons at the outer edge of the stack are pressed against by the first and second side-pressing mechanisms, the stacked cartons are in close contact with each other and arranged neatly. The two active telescopic frames drive the transparent cover to rise, allowing it to dock with the upper pressure platform. The air pressure and humidity regulation unit adjusts the air pressure and humidity of the space enclosed by the transparent cover, the upper pressure platform, and the lower support platform. The first wireless communication module exchanges signals with the air pressure and humidity detection and control unit inside the carton, enabling the air pressure and humidity detection and control unit to adjust the humidity and air pressure inside the carton being tested and to measure the air pressure and humidity data inside the carton. The first air pressure probe and the first humidity probe continuously monitor the air pressure and humidity outside the carton and collect air permeability data. This invention utilizes a combination of internal and external environmental control detection structures to perform air permeability testing on both individually placed boxes and boxes in a stacked configuration. This facilitates the analysis of the impact of different stacking conditions on the air permeability of the boxes. Furthermore, because the internal and external environmental control detection structures regulate and collect data on the internal and external environments of the boxes, respectively, it allows for the analysis of the effects of humidity and air pressure on the air permeability of the boxes, as well as the air permeability performance of the boxes under different humidity and air pressure conditions, thus enhancing the applicability of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2For the present invention Figure 1 A magnified view of a portion of point A in the middle;

[0019] Figure 3 This is a three-dimensional structural schematic diagram from another perspective of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the first side-pressing mechanism of the present invention;

[0021] Figure 5 This is a three-dimensional structural schematic diagram of the first side-pressing mechanism of the present invention from another perspective;

[0022] Figure 6 This is a three-dimensional structural diagram of the internal environment regulation and detection structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the charging unit of the present invention;

[0024] Figure 8 This is a three-dimensional structural diagram of the air pressure and humidity detection and control unit of the present invention;

[0025] Figure 9 This is a three-dimensional structural diagram of the hinge plate, sliding sleeve, and rectangular block of the present invention in cooperation with each other;

[0026] Figure 10 This is a three-dimensional structural diagram of the locking component of the present invention;

[0027] Figure 11 This is a three-dimensional structural diagram of the central platform of the present invention;

[0028] Figure 12 This is a three-dimensional sectional view of the fixed frame, electric telescopic frame, connecting frame, swing frame, second humidity probe, second air pressure probe, hinge plate, and rectangular sleeve of the present invention in mutual cooperation.

[0029] Figure 13 For the present invention Figure 8 A magnified view of a portion of point B in the middle;

[0030] Figure 14 This is a schematic diagram of the structure of the support platform, independent power supply, second wireless charging component, locking component, longitudinal frame, fixing frame, outer edge frame and central platform of the present invention in cooperation with each other;

[0031] Figure 15 This is a schematic diagram of the structure of the independent water tank, manifold, cross-shaped diversion pipe, absorbent cotton layer, sleeve, ultrasonic microporous atomizing sheet, and elastic gasket of the present invention.

[0032] Figure 16 This is a three-dimensional structural diagram of the interaction between the rotating shaft, wing frame, support plate, and linkage shaft of the present invention;

[0033] Figure 17 This is a three-dimensional structural diagram of the cable tray and outer frame of the present invention.

[0034] In the diagram: 1. Machine base; 2. Control console; 3. Internal environment control and detection structure; 4. Charging unit; 5. Air pressure and humidity detection unit; 6. First wireless communication module; 7. External environment control and detection structure; 8. First active telescopic frame; 9. Upper pressure platform; 10. First air pressure probe; 11. First humidity probe; 12. Air pressure and humidity adjustment unit; 13. Lower support platform; 14. First side pressure mechanism; 15. Second side pressure mechanism; 16. Second active telescopic frame; 17. Transparent cover; 18. Support platform; 19. Slot; 20. First wireless charging component; 21. Support platform; 22. Independent power supply; 23. Second wireless charging component; 24. Locking element; 25. Longitudinal transfer frame; 26. Fixed frame; 27. Electric telescopic frame; 28. Connecting frame; 29. ​​Guide frame; 30. Swing frame; 31. Second humidity... 31. Pressure probe; 32. Second air pressure probe; 33. Hinge plate; 34. Sliding sleeve; 35. Rectangular block; 36. Rectangular sleeve; 37. Cable tray; 38. Outer edge frame; 39. Spray assembly; 40. Center platform; 41. Independent water tank; 42. Manifold; 43. Cross-shaped diverter fitting; 44. Absorbent cotton layer; 45. Sleeve; 46. Ultrasonic microporous atomizing plate; 47. Elastic gasket; 48. Rotating shaft; 49. Concave platform; 50. Third active telescopic frame; 51. Cross frame; 52. Push frame; 53. Dual output shaft motor; 54. Lead screw; 55. Shaft frame; 56. Wing frame; 57. Support plate; 58. Linkage shaft; 59. Guide plate; 60. Z-shaped groove; 61. Reversing valve; 62. First hose; 63. Humidifier; 64. Second hose; 65. Integrated dual-purpose air pump; 66. Sealing strip. Detailed Implementation

[0035] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0036] Example 1, see Figures 1 to 17 As shown, a packaging carton air permeability testing device includes a machine base 1, a control console 2 fixedly connected to the machine base 1, a first wireless communication module 6 fixedly connected to the machine base 1, and further includes:

[0037] An internal environment control and detection structure 3 is connected to the machine 1. The internal environment control and detection structure 3 includes a bearing charging unit 4 fixedly connected to the machine 1. The bearing charging unit 4 is movably connected to multiple sets of air pressure and humidity detection and control units 5. The bearing charging unit 4 is used to provide power to the air pressure and humidity detection and control units 5 and to provide limit support for the air pressure and humidity detection and control units 5. The air pressure and humidity detection and control units 5 are communicatively connected to the first wireless communication module 6. The air pressure and humidity detection and control units 5 can adapt to packaging cartons of different sizes by adjusting the detection position and spray height.

[0038] An external environment control and detection structure 7 is connected to the machine base 1. The external environment control and detection structure 7 includes two sets of first active telescopic frames 8 fixedly connected to the machine base 1. The moving ends of the two sets of first active telescopic frames 8 are jointly fixedly connected to an upper pressure platform 9. A first air pressure probe 10 is fixedly connected to the upper pressure platform 9. A first humidity probe 11 is fixedly connected to the upper pressure platform 9. An air pressure and humidity regulating unit 12 is connected to the upper pressure platform 9. A lower support platform 13 is fixedly connected to the machine base 1. The lower support platform 13 is located below the upper pressure platform 9. Four sets of first side pressing mechanisms 14 are installed at equal angles along the circumference at one end of the lower support platform 13, and four sets of second side pressing mechanisms 15 are installed at equal angles along the circumference at one end of the lower support platform 13 facing the upper pressing platform 9. The first side pressing mechanisms 14 and the second side pressing mechanisms 15 have the same structure. Multiple sets of second active telescopic frames 16 are fixedly connected to the machine base 1. The moving ends of the multiple sets of second active telescopic frames 16 are fixedly connected to a transparent cover 17. The transparent cover 17 is slidably connected to the lower support platform 13 and movably connected to the upper pressing platform 9.

[0039] In use, if only a single set of cartons is to be inspected, the air pressure and humidity control unit 5 is placed into the set of cartons to be inspected. The cartons are then sealed and placed on the lower support platform 13. The second active telescopic frame 16 drives the transparent cover 17 to rise, causing the transparent cover 17 to align with the upper pressure platform 9. The air pressure and humidity adjustment unit 12 adjusts the air pressure and humidity of the space enclosed by the transparent cover 17, the upper pressure platform 9, and the lower support platform 13. This adjustment is achieved through signal interaction between the first wireless communication module 6 and the air pressure and humidity control unit 5 inside the cartons. The humidity and air pressure inside the cardboard box are measured and collected. The first air pressure probe 10 and the first humidity probe 11 continuously monitor the air pressure and humidity outside the cardboard box, thus collecting data on the cardboard box's air permeability. To conduct a simulated air permeability experiment while the cardboard boxes are stacked, each group of cardboard boxes needs to have an air pressure and humidity detection unit 5 placed inside. The cardboard boxes are then stacked on the lower support platform 13. The first side pressure mechanism 14 and the second side pressure mechanism 15 both apply pressure to the outer wall of the stacked cardboard boxes to stabilize the stack and ensure they are at the same height. The cartons are tightly packed together, and the height of the first side-pressing mechanism 14 is adjusted by moving the upper pressure table 9 via the first active telescopic frame 8. As the first side-pressing mechanism 14 moves downward, it provides downward friction to the cartons, simulating the downward pressure experienced by the cartons in actual stacking. This simulates a situation where all four circumferential and top surfaces of the cartons being tested are in contact with the cartons, and the cartons contain items. Because the cartons at the outer edge of the stack are pressed against the first and second side-pressing mechanisms 14 and 15, the stacked cartons are in close contact and neatly arranged. The second active telescopic frame 8... The frame 16 lifts the transparent cover 17, causing it to dock with the upper pressure platform 9. The air pressure and humidity adjustment unit 12 adjusts the air pressure and humidity of the space enclosed by the transparent cover 17, the upper pressure platform 9, and the lower support platform 13. The first wireless communication module 6 communicates with the air pressure and humidity detection and control unit 5 inside the carton, so that the air pressure and humidity detection and control unit 5 adjusts the humidity and air pressure inside the carton being tested and measures the air pressure and humidity data inside the carton. The first air pressure probe 10 and the first humidity probe 11 continuously monitor the air pressure and humidity outside the carton and collect air permeability data. This invention utilizes the cooperation between the internal environment control and detection structure 3 and the external environment control and detection structure 7 to perform air permeability testing on both individually placed boxes and boxes in a stacked state. This facilitates the analysis of the impact of different stacking conditions on the air permeability of the boxes. Furthermore, since the internal environment control and detection structure 3 and the external environment control and detection structure 7 respectively regulate and collect data on the internal and external environments of the boxes, it is possible to analyze the effects of humidity and air pressure on the air permeability of the boxes, as well as the air permeability performance of the boxes under different humidity and air pressure conditions, thereby improving the applicability of this invention.

[0040] In one embodiment, the charging unit 4 includes a support platform 18 fixedly connected to the machine base 1. The support platform 18 has a slot 19 movably connected to the air pressure and humidity detection unit 5. A first wireless charging component 20 is fixedly installed in the slot 19. The slot 19 of the support platform 18 restricts the movement of the air pressure and humidity detection unit 5 by engaging it, thus assisting in the neat arrangement of unused air pressure and humidity detection units 5. During this process, the first wireless charging component 20 wirelessly charges the air pressure and humidity detection unit 5.

[0041] In one embodiment, the air pressure and humidity detection and control unit 5 includes a support platform 21 movably connected to the slot 19. An independent power supply 22 is fixedly installed inside the support platform 21. A second wireless charging component 23 is fixedly connected to the support platform 21, receiving electrical energy from the first wireless charging component 20. A locking member 24 is threaded onto the support platform 21, abutting against a longitudinal sliding frame 25 slidably connected to the support platform 21. Four sets of fixed frames 26 arranged circumferentially are fixedly connected to the longitudinal sliding frame 25. Each set of fixed frames 26 is fixedly connected to two sets of electric telescopic frames 27. The moving ends of the two sets of electric telescopic frames 27 are jointly fixedly connected to a connecting frame 28. The receiving frame 28 is fixedly connected to two symmetrically arranged guide frames 29. Each guide frame 29 is hinged to a set of swing frames 30. One set of swing frames 30 is fixedly connected to a second humidity probe 31, and the other set of swing frames 30 is fixedly connected to a second air pressure probe 32. The swing frames 30 are hinged to a hinge plate 33. The hinge plate 33 is hinged to a sliding sleeve 34 that is slidably connected to the guide frame 29. The sliding sleeve 34 is fixedly connected to two symmetrically arranged rectangular blocks 35. The rectangular blocks 35 are slidably connected to rectangular sleeves 36. The four sets of rectangular sleeves 36 are jointly fixedly connected to a bridge frame 37. The bridge frame 37 is fixedly connected to an outer edge frame 38 that is fixedly connected to the support platform 21. The longitudinal movement frame 25 is fixedly connected to a spray assembly 39.The independent power supply 22 supplies power to the electric telescopic frame 27, the second humidity probe 31, the second air pressure probe 32, and the spray assembly 39. The second wireless charging assembly 23 receives the electrical energy from the first wireless charging assembly 20 and transfers it into the independent power supply 22. By rotating the locking member 24 and moving it away from the longitudinal frame 25, the locking member 24 is released from its position on the longitudinal frame 25. After moving the longitudinal frame 25, the spray assembly 39 is placed in the middle of the carton. During this process, as the longitudinal frame 25 rises, the fixing frame 26 moves the electric telescopic frame 27. At this time, the connecting frame 28 moves the guide frame 29. The rectangular sleeve 36 limits the sliding sleeve 34 through the rectangular block 35. The guide frame 29 and the sliding sleeve 34 move relative to each other. The sliding sleeve 34 restricts the movement of one end of the hinge plate 33. At this time, under the pull of the hinge plate 33 on the swing frame 30, the swing frame 30 rotates away from the spray assembly 39. This is done so that the second humidity probes 31 and the second air pressure probes 32 are moved away from the spray assembly 39. Then, the locking member 24 is rotated again so that the locking member 24 abuts against and squeezes the longitudinal frame 25 to increase the pressure of the locking member 24 on the longitudinal frame 25, thereby restricting the movement of the longitudinal frame 25. When the electric telescopic frame 27 pushes the connecting frame 28 to move, the guide frame 29 and the swing frame 30 move laterally together. The laterally moving guide frame 29 drives the sliding sleeve 34 to move laterally, and the rectangular block 35 moves along the rectangular sleeve 36. At this time, since the relative position of the sliding sleeve 34 and the guide frame 29 is fixed, the relative position of the hinge plate 33 and the swing frame 30 does not change. At this time, the swing frame 30 only moves laterally. By adjusting the shape and height of the air pressure and humidity detection unit 5, the height of the water mist released by the air pressure and humidity detection unit 5 and the detection position can be adjusted as the internal space of the carton increases, so that the air pressure and humidity detection unit 5 can be used for cartons of different sizes.

[0042] In one embodiment, the spray assembly 39 includes a central platform 40 fixedly connected to the longitudinal frame 25. The central platform 40 is fixedly connected to four independent water tanks 41. A manifold 42 is fixedly installed at the lower end of each independent water tank 41. The four manifolds 42 are jointly fixedly connected to a cross-shaped diverter 43. The cross-shaped diverter 43 has a hollow structure. An absorbent cotton layer 44 is fixedly installed inside the cross-shaped diverter 43. Multiple sets of sleeves 45 are fixedly connected to the cross-shaped diverter 43. An ultrasonic microporous atomizing plate 46 is fixedly installed at the end of the sleeve 45 away from the cross-shaped diverter 43. An elastic gasket 47 is fixedly installed inside the sleeve 45. The elastic gasket 47 abuts against the absorbent cotton layer 44, and the absorbent cotton layer 44 abuts against the ultrasonic microporous atomizing plate 46. Water in the independent water tank 41 enters the absorbent cotton layer 44 in the cross-shaped diversion pipe 43 through the manifold 42. The absorbent cotton layer 44 absorbs the water, making it contain water. Under the pressure of the elastic gasket 47, the wet absorbent cotton layer 44 adheres tightly to the ultrasonic microporous atomizing plate 46. As the ultrasonic microporous atomizing plate 46 is activated, the water in the absorbent cotton layer 44 is agitated into water mist and dispersed to various parts of the carton through the micropores on the ultrasonic microporous atomizing plate 46 to regulate the humidity inside the carton.

[0043] In one embodiment, both the first side-pressing mechanism 14 and the second side-pressing mechanism 15 include a concave platform 49. The concave platform 49 of the first side-pressing mechanism 14 is fixedly connected to the upper pressing platform 9, and the concave platform 49 of the second side-pressing mechanism 15 is fixedly connected to the lower support platform 13. Multiple sets of third active telescopic frames 50 are fixedly connected to the concave platform 49. The moving ends of the multiple sets of third active telescopic frames 50 are jointly fixedly connected to a crossbeam 51. The crossbeam 51 is fixedly connected to a pusher 52, and the crossbeam 51 is fixedly connected to a double... The output shaft motor 53 has a lead screw 54 fixedly connected to its output end. The lead screw 54 is threadedly connected to a shaft bracket 55. The shaft bracket 55 is slidably connected to a cross frame 51. The shaft bracket 55 is rotatably connected to a rotating shaft 48. The rotating shaft 48 is fixedly connected to a wing frame 56. Both ends of the rotating shaft 48 are fixedly connected to a linkage shaft 58 through a support plate 57. Each set of linkage shafts 58 is slidably connected to a set of guide plates 59. The guide plates 59 are provided with Z-shaped grooves 60 that are slidably connected to the linkage shafts 58. The third active telescopic frame 50 drives the cross frame 51 to move, the cross frame 51 drives the push frame 52 to move, and the push frame 52 is used to abut against the outer wall of the carton. The dual-output shaft motor 53 drives the lead screw 54 to rotate, the lead screw 54 drives the shaft frame 55 to move, and the shaft frame 55 drives the rotating shaft 48 to move, so that the rotating shaft 48 drives the wing frame 56 to move. During this period, the linkage shaft 58 slides along the Z-shaped groove 60. The linkage shaft 58 drives the rotating shaft 48 to rotate through the support plate 57, thereby causing the wing frames 56 to rotate and move away from each other, so as to facilitate the movement of the wing frames. The frame 56 and the pusher 52 together apply pressure to the outer wall of the carton, which facilitates the shape adjustment of the first side pressure mechanism 14 and the second side pressure mechanism 15, thereby adjusting the pressure area and the pressure position of the first side pressure mechanism 14 and the second side pressure mechanism 15 on the carton. This makes the first side pressure mechanism 14 and the second side pressure mechanism 15 suitable for applying pressure to multiple sets of cartons, and also facilitates the first side pressure mechanism 14 and the second side pressure mechanism 15 to apply pressure to cartons of different sizes, simulating lateral constraints and indirectly assisting in simulating pressure.

[0044] In one embodiment, the air pressure and humidity regulating unit 12 includes a reversing valve 61 fixedly connected to the upper pressure platform 9. The reversing valve 61 is connected to a humidifier 63 via a first hose 62, and the humidifier 63 is fixedly connected to the machine base 1. The reversing valve 61 is connected to an integrated dual-purpose air pump 65 via a second hose 64, and the integrated dual-purpose air pump 65 is fixedly connected to the machine base 1. The water mist generated by the humidifier 63 enters the reversing valve 61 through the first hose 62, so that the water mist enters the space jointly enclosed by the transparent cover 17, the upper pressure platform 9, and the lower support platform 13. When the reversing valve 61 is connected to the integrated dual-purpose air pump 65 through the second hose 64, the integrated dual-purpose air pump 65 regulates the air pressure in the space jointly enclosed by the transparent cover 17, the upper pressure platform 9, and the lower support platform 13 by suction or injection of air.

[0045] Example 2, based on Example 1, see [link / reference] Figure 1 and Figure 3 Both the upper pressure platform 9 and the lower support platform 13 are fixedly connected with sealing strips 66, which are movably connected to the transparent cover 17. By setting the sealing strips 66, gas is prevented from passing through the gaps between the transparent cover 17 and the upper pressure platform 9 and between the transparent cover 17 and the lower support platform 13, thereby improving the airtightness of the present invention.

[0046] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A device for testing the air permeability of packaging cartons, comprising a machine base, a control console fixedly connected to the machine base, and a first wireless communication module fixedly connected to the machine base, characterized in that, Also includes: An internal environment control and detection structure connected to the machine tool includes a carrier charging unit fixedly connected to the machine tool. The carrier charging unit is movably connected to multiple sets of air pressure and humidity detection and control units. The carrier charging unit is used to provide power to the air pressure and humidity detection and control units and to provide limit support for the air pressure and humidity detection and control units. The air pressure and humidity detection and control units are communicatively connected to a first wireless communication module. The air pressure and humidity detection and control units can adapt to packaging cartons of different sizes by adjusting the detection position and spray height. An external environment control and detection structure connected to a machine tool includes two sets of first active telescopic frames fixedly connected to the machine tool. The moving ends of the two sets of first active telescopic frames are fixedly connected to an upper pressure platform. The upper pressure platform is fixedly connected to multiple sets of first air pressure probes and multiple sets of first humidity probes. The upper pressure platform is connected to an air pressure and humidity regulating unit. The machine tool is fixedly connected to a lower support platform, which is located below the upper pressure platform. Four sets of first side pressure mechanisms are installed at equal angles along the circumference at one end of the upper pressure platform facing the lower support platform. Four sets of second side pressure mechanisms are installed at equal angles along the circumference at one end of the lower support platform facing the upper pressure platform. The first and second side pressure mechanisms have the same structure. The machine tool is fixedly connected to multiple sets of second active telescopic frames. The moving ends of the multiple sets of second active telescopic frames are fixedly connected to a transparent cover. The transparent cover is slidably connected to the lower support platform and movably connected to the upper pressure platform. If only a single set of cartons is to be inspected, the air pressure and humidity control unit is placed inside the set of cartons to be inspected. The cartons are then sealed and placed on the lower support platform. The second active telescopic frame drives the transparent cover to rise, aligning it with the upper pressure platform. The air pressure and humidity control unit regulates the air pressure and humidity within the space enclosed by the transparent cover, upper pressure platform, and lower support platform. Furthermore, it interacts with the air pressure and humidity control unit inside the cartons via a first wireless communication module, thereby adjusting the air pressure and humidity within the inspected cartons. The system measures and collects data on humidity and air pressure inside the cardboard box. A first air pressure probe and a first humidity probe continuously monitor the air pressure and humidity outside the cardboard box, thus collecting data on the cardboard box's air permeability. To conduct a simulated air permeability experiment while the cardboard boxes are stacked, each group of boxes needs to have an air pressure and humidity detection unit placed inside. The boxes are then stacked on the lower support platform. Both the first and second side-pressure mechanisms apply pressure to the outer wall of the stacked boxes to stabilize the stack and ensure that the boxes are at the same height. The boxes are tightly pressed together, and the height of the first side-pressing mechanism is adjusted by moving the upper pressure table driven by the first active telescopic frame. As the first side-pressing mechanism moves downward, it provides downward friction to the boxes, replacing the downward pressure experienced by the boxes in actual stacking. This simulates a situation where all four circumferential and top surfaces of the box under test are in contact with the box, and the box contains items. Because the boxes at the outer edge of the stack are pressed together by the first and second side-pressing mechanisms, the stacked boxes are in close contact and neatly arranged. The active telescopic frame lifts the transparent cover, allowing it to align with the upper pressure platform. The air pressure and humidity control unit regulates the air pressure and humidity within the space enclosed by the transparent cover, upper pressure platform, and lower support platform. The unit communicates with the air pressure and humidity detection and control unit inside the carton via the first wireless communication module, enabling the unit to adjust the humidity and air pressure inside the carton and measure the air pressure and humidity data. The first air pressure probe and the first humidity probe continuously monitor the air pressure and humidity outside the carton, collecting air permeability data.

2. The air permeability testing device for packaging cartons according to claim 1, characterized in that, The charging unit includes a support platform fixedly connected to the machine tool. The support platform has a slot that is movably connected to the air pressure and humidity detection and control unit. A first wireless charging component is fixedly installed in the slot.

3. The packaging carton air permeability testing device according to claim 2, characterized in that, The air pressure and humidity detection and control unit includes a support platform movably connected to a card slot. An independent power supply is fixedly installed inside the support platform. A second wireless charging component is fixedly connected to the support platform, receiving electrical energy from a first wireless charging component. A locking element is threaded onto the support platform, abutting against a longitudinally sliding frame slidably connected to the support platform. Four sets of fixed frames are fixedly connected to the longitudinally sliding frame, each set of fixed frames being fixedly connected to two sets of electrically telescopic frames. The moving ends of the two sets of electrically telescopic frames are jointly fixedly connected to a connecting frame. The frame is fixedly connected to two symmetrically arranged sets of guide frames. Each set of guide frames is hinged to a set of swing frames. One set of swing frames is fixedly connected to a second humidity probe, and the other set of swing frames is fixedly connected to a second air pressure probe. The swing frames are hinged to hinge plates, and the hinge plates are hinged to sliding sleeves that are slidably connected to the guide frames. The sliding sleeves are fixedly connected to two symmetrically arranged sets of rectangular blocks, and the rectangular blocks are slidably connected to rectangular sleeves. The four sets of rectangular sleeves are jointly fixedly connected to a bridge frame. The bridge frame is fixedly connected to an outer edge frame that is fixedly connected to a support platform. The longitudinal movement frame is fixedly connected to a spray assembly.

4. The packaging carton air permeability testing device according to claim 3, characterized in that, The spray assembly includes a central platform fixedly connected to a longitudinally moving frame. The central platform is fixedly connected to four independent water tanks. A manifold is fixedly installed at the lower end of each independent water tank. The four manifolds are fixedly connected to a cross-shaped diverter fitting. An absorbent cotton layer is fixedly installed inside the cross-shaped diverter fitting. Multiple sleeves are fixedly connected to the cross-shaped diverter fitting. An ultrasonic microporous atomizing plate is fixedly installed at the end of each sleeve away from the cross-shaped diverter fitting. An elastic gasket is fixedly installed inside the sleeve. The elastic gasket abuts against the absorbent cotton layer, and the absorbent cotton layer abuts against the ultrasonic microporous atomizing plate.

5. The air permeability testing device for packaging cartons according to claim 1, characterized in that, Both the first and second side-pressing mechanisms include a concave platform. The concave platform of the first side-pressing mechanism is fixedly connected to the upper pressure platform, and the concave platform of the second side-pressing mechanism is fixedly connected to the lower support platform. Multiple sets of third active telescopic frames are fixedly connected to the concave platform. The moving ends of the multiple sets of third active telescopic frames are jointly fixedly connected to a cross frame. A push frame is fixedly connected to the cross frame. A dual-output shaft motor is fixedly connected to the cross frame. A lead screw is fixedly connected to the output end of the dual-output shaft motor. A shaft frame is threadedly connected to the lead screw. The shaft frame is slidably connected to the cross frame. A rotating shaft is rotatably connected to the shaft frame. A wing frame is fixedly connected to the rotating shaft. Both ends of the rotating shaft are fixedly connected to a linkage shaft through a support plate. A set of guide plates is slidably connected to each linkage shaft. A Z-shaped groove that is slidably connected to the linkage shaft is provided on the guide plate.

6. The air permeability testing device for packaging cartons according to claim 1, characterized in that, The air pressure and humidity regulating unit includes a reversing valve fixedly connected to the upper pressure platform. The reversing valve is connected to a humidifier via a first hose. The humidifier is fixedly connected to the machine base. The reversing valve is connected to an integrated dual-purpose air pump via a second hose. The integrated dual-purpose air pump is fixedly connected to the machine base.

7. The air permeability testing device for packaging cartons according to claim 1, characterized in that, Both the upper pressure platform and the lower support platform are fixedly connected with sealing strips, and the sealing strips are movably connected to the transparent cover.

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