A bearing device for detecting the performance strength of corrugated paper

Abstract

This invention belongs to the technical field of strength testing devices, specifically a corrugated paper performance strength testing support device, including a testing instrument. The top of the testing instrument is connected to a tray and a frame. A first electric cylinder is installed on the frame, and a dynamic pressure plate that works with the tray is connected to the bottom of the first electric cylinder. In this invention, a hydraulic pump, an annular sleeve, and a first and second atomizing nozzles spray water mist evenly, achieving controllable simulation of the humidity of the environment in which the corrugated paper is used. The second atomizing nozzle is positioned directly opposite the corrugated core layer. Combined with the dynamic angle adjustment function, the efficiency of water mist penetration into the core layer is significantly improved, shortening the humidity pretreatment time. The integration of functions such as automatic centering, automatic reset, rapid drying, mode switching, and direction adjustment significantly shortens the test preparation time. At the same time, it ensures that each test is conducted under precise centering and stable drying conditions, effectively improving the accuracy and repeatability of the test results.

Description

Technical Field

[0001] This invention belongs to the technical field of strength testing devices, specifically a bearing device for testing the performance and strength of corrugated paper. Background Technology

[0002] During the production process of corrugated paper, strength testing is usually carried out by sampling inspection. This method randomly selects a certain number of samples from the overall product for testing, and evaluates the overall product quality level by analyzing the performance of the samples.

[0003] Existing technologies disclose several invention patents in the field of strength testing devices. Among them, patent CN118896840B discloses a corrugated paper strength testing support device, relating to the field of strength testing devices. It includes a base with two mounting brackets fixed to the top. A triangular truss is rotatably mounted between the two mounting brackets via bearings. The triangular truss has placement planes on three directions, and clamps are provided at the four corners of each placement plane. A placement assembly is located on the top of the triangular truss, including two sets of side plates. Baffles are slidably fitted onto the front and rear ends of the two sets of side plates. Compared to existing technologies, this device uses the three placement planes of the triangular truss to alternately receive and test the strength of the corrugated paper. The feeding of corrugated paper improves overall testing efficiency. The cooperation between the placement and unlocking components allows pre-stored corrugated paper to be alternately fed onto the placement plane. The clamps on the placement plane hold and fix the corrugated paper before sending it for testing, reducing the time spent on manual operation. However, this technical solution still has some shortcomings in its application. Since corrugated paper is widely used, it is necessary to conduct strength tests on the same type of corrugated paper after wetting to obtain more comprehensive test data. According to the database, the bottom bearing capacity of wetted corrugated paper is lower than that of dry paper. Therefore, when the above device tests wetted corrugated paper, it cannot adjust the extrusion force of the extrusion device or the clamping force of the clamps, thus failing to obtain accurate test results.

[0004] Based on this, the present invention designs a corrugated paper performance strength testing support device to solve the above problems. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a bearing device for testing the performance and strength of corrugated paper. This invention primarily addresses the problem that, due to the widespread use of corrugated paper, it is necessary to conduct strength tests on corrugated paper of the same type after wetting to obtain more comprehensive test data. Database analysis reveals that the bottom bearing capacity of wetted corrugated paper is lower than that of dry paper. Therefore, when the aforementioned device tests wetted corrugated paper, it cannot adjust the extrusion force of the extrusion device or the clamping force of the fixture, resulting in inaccurate test results.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a corrugated paper performance strength testing bearing device, including a tester, the top of the tester is respectively connected to a tray and a frame, a first electric cylinder is installed on the frame, and the bottom end of the first electric cylinder is connected to a dynamic pressure plate that cooperates with the tray; A sleeve is slidably sleeved on the telescopic shaft of the first electric cylinder, and a second electric cylinder connected to the top of the sleeve is installed on the frame. Multiple spray holes are opened on the outer wall of the sleeve, and an annular sleeve is sleeved on the outer wall of the sleeve corresponding to the multiple spray holes. A water inlet is opened on the outer wall of the annular sleeve. A first atomizing nozzle is engaged in the nozzle of one of the spray holes, and a second atomizing nozzle is rotatably sleeved in the remaining two spray holes facing the corrugated core layer. A second gear is fixedly sleeved on the second atomizing nozzle. A wheel and axle are rotatably connected to the outer wall of the sleeve. A third gear that meshes with the second gear is fixedly sleeved on one end of the wheel and a fourth gear is fixedly sleeved on the other end of the wheel and a first toothed plate meshes on the fourth gear. A compensating sleeve is slidably fitted onto the bottom of the outer wall of the sleeve. A plurality of sliders are connected to the inner wall of the compensating sleeve. The sliders are slidably connected to a plurality of grooves opened in the outer wall of the sleeve. A first spring is connected to the top of the slider. The slider is elastically supported and connected to the inner top wall of the groove through the first spring. The bottom of the first toothed plate is connected to the top of the compensating sleeve.

[0007] Preferably, the bottom of the inner wall of the compensation sleeve is provided with an annular groove, and the inner wall of the annular groove is connected to a plurality of adapter frames. Each adapter frame is rotatably connected to an adapter shaft, and a guide plate is fixedly sleeved on the adapter shaft. The guide plate is inclined upward so that the airflow flowing along the inner wall of the annular groove flows obliquely upward. A third spring is sleeved on the adapter shaft, and the guide plate is elastically rotatably connected to the adapter shaft through the third spring.

[0008] Preferably, a mixing fan is rotatably connected to the inner top wall of the sleeve. The mixing fan is used to accelerate the water mist flow rate. A fifth gear is fixedly sleeved on the mixing fan. A third motor is installed on the top of the sleeve. A sixth gear is fixedly sleeved on the output end of the third motor. The sixth gear meshes with the fifth gear.

[0009] Preferably, the top of the sleeve is provided with multiple air vents, each of which is nested with a baffle plate. The end of the baffle plate is connected to a corner shaft, which is rotatably connected to the inner wall of the air vent. The top of the sleeve is provided with a corner groove on one side corresponding to the same row of multiple air vents. The other end of the corner shaft extends into the corner groove and is fixedly sleeved with a seventh gear. A second toothed plate is slidably connected in the corner groove. The second toothed plate meshes with the seventh gear. The top of multiple second toothed plates is connected to the same first magnetic plate. A third toothed plate is provided above the first magnetic plate, and a curved bracket is connected to the third toothed plate. The third toothed plate is connected to the top of one of the first toothed plates through the curved bracket.

[0010] Preferably, the outer ring surface of the combined sleeve is connected to a bracket; A connecting shaft is rotatably connected to the bracket, one end of which is connected to a first threaded rod. A first motor is mounted on the bracket, and the first motor is connected to the other end of the first threaded rod. A first threaded sleeve is threadedly connected to the first threaded rod, and a first directional hole is opened on the first threaded sleeve. A first clamping plate is connected to the first threaded sleeve. The other end of the connecting shaft is provided with a second threaded rod, the other end of the second threaded rod is rotatably connected to the bracket, a second threaded sleeve is threadedly connected to the second threaded rod, a second directional hole is opened on the second threaded sleeve, and a second clamping plate is connected to the second threaded sleeve; The second directional hole and the first directional hole are slidably connected to the same directional shaft, and the directional shaft is connected to the bracket.

[0011] Preferably, the other end of the connecting shaft is provided with a combination groove, the end of the second threaded rod is rotatably sleeved in the combination groove, the end of the second threaded rod is embedded with a permanent magnet ring, and an electromagnet is installed on the connecting shaft, the electromagnet and the permanent magnet ring are used in conjunction.

[0012] Preferably, a toothed ring is fixedly sleeved at the bottom of the outer ring surface of the combined sleeve, a second motor is installed on the top of the tester, and a first gear is fixedly sleeved at the output end of the second motor, the first gear meshing with the toothed ring.

[0013] The beneficial effects of this invention are as follows: 1. In this invention, a hydraulic pump, an annular sleeve, and first and second atomizing nozzles uniformly spray water mist to achieve controllable simulation of the humidity of the environment in which corrugated paper is used. The second atomizing nozzle is positioned directly opposite the corrugated core layer. Combined with the dynamic angle adjustment function, the efficiency of water mist penetration into the core layer is significantly improved, and the humidity pretreatment time is shortened. The integration of functions such as automatic centering, automatic reset, rapid air drying, mode switching, and direction adjustment significantly shortens the test preparation time and improves the operating efficiency. At the same time, it ensures that each test is conducted under precise centering and stable drying conditions, effectively improving the accuracy and repeatability of the test results.

[0014] 2. In this invention, the airflow generated by the high-speed rotation of the mixed-flow fan actively disturbs the water mist in the test area, avoiding local accumulation. The guide plate is elastically connected to the third spring through the adapter shaft, and rotates adaptively under the drive of water mist fluctuations, forming a composite flow path of "downward guidance and upward guidance", which enhances water mist circulation, reduces humidity dead zones, and creates a stable humidity environment.

[0015] 3. In this invention, after the test is completed, the second electric cylinder drives the sleeve to move upward, and with the reset force of the first spring, drives the compensation sleeve, the first toothed plate and other components to automatically reset. Through magnetic transmission and gear linkage, the wind deflector automatically switches to the tilted state. The mixing fan guides the external air to be heated by the electric heater to form hot air, which quickly dries the tray, dynamic pressure plate and the inside of the sleeve, eliminating the influence of residual humidity and shortening the preparation time between two tests.

[0016] 4. In this invention, the first motor drives the first clamping plate and the second clamping plate to move synchronously in opposite directions via reversible threaded rods, automatically pushing the corrugated paper to the center position of the tray, achieving precise centering and avoiding uneven force and data deviation caused by sample misalignment.

[0017] 5. In this invention, the power transmission between the first and second threaded rods is controlled by the on / off state of the electromagnet, allowing the device to quickly switch between "single-sided pressure" and "double-sided pressure" modes. In the double-sided pressure mode, different pressures can be applied to the two opposite surfaces of the corrugated paper to simulate asymmetrical force conditions.

[0018] 6. In this invention, functions such as humidity simulation, pressure mode switching, and pressure direction adjustment can be used in conjunction to achieve comprehensive performance testing of corrugated paper under the coupled conditions of multiple factors such as "asymmetric pressure + humidity + multiple angles", providing test data that is closer to actual use scenarios for packaging design. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the support structure in this invention; Figure 4 This is a schematic diagram of the structure in the present invention under a cross-sectional view; Figure 5 This is a schematic diagram of the structure of the sleeve and the compensation sleeve after disassembly in this invention; Figure 6 This is a three-dimensional structural diagram of the sleeve in this invention, viewed from below. Figure 7 This is the present invention. Figure 4 Enlarged structural diagram at point A; Figure 8 This is the present invention. Figure 5 Enlarged structural diagram at point B; Figure 9 This is the present invention. Figure 5 Enlarged structural diagram at point C; Figure 10 This is the present invention. Figure 6 Enlarged structural diagram at point D; In the diagram: 1. Tester; 2. Tray; 3. Frame; 4. First electric cylinder; 5. Dynamic pressure plate; 6. Support; 7. Coupling; 8. First threaded rod; 9. First motor; 10. Directional shaft; 11. First threaded sleeve; 12. First directional hole; 13. First clamping plate; 14. Combination groove; 15. Second threaded rod; 16. Permanent magnet ring; 17. Electromagnet; 18. Second clamping plate; 19. Combination sleeve; 20. Gear ring; 21. First gear; 22. Second motor; 23. Sleeve; 24. Second electric cylinder; 25. Spray hole; 26. Annular sleeve; 27. Water inlet; 28. First atomizing nozzle; 29. ​​Second atomizing nozzle; 30. Second gear. 31. Wheel; 32. Third gear; 33. Wheel axle; 34. Fourth gear; 35. First toothed plate; 36. Compensating sleeve; 37. Slide rail; 38. First spring; 39. Fifth gear; 40. Sixth gear; 41. Third motor; 42. Air outlet; 43. Baffle plate; 44. Corner shaft; 45. Seventh gear; 46. Second toothed plate; 47. Second spring; 48. First magnetic plate; 49. Second toothed plate; 50. Bend bracket; 51. Annular groove; 52. Adapter bracket; 53. Adapter shaft; 54. Third spring; 55. Guide plate; 56. Second threaded sleeve; 57. Second directional hole; 58. Mixing fan; 59. Corner groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 10 As shown, a corrugated paper performance strength testing bearing device includes a tester 1. The top of the tester 1 is connected to a tray 2 and a frame 3. A first electric cylinder 4 is installed on the frame 3. The bottom end of the first electric cylinder 4 is connected to a dynamic pressure plate 5 that works with the tray 2. A sleeve 23 is slidably sleeved on the telescopic shaft of the first electric cylinder 4. A second electric cylinder 24 connected to the top of the sleeve 23 is installed on the frame 3. Multiple spray holes 25 are opened on the outer wall of the sleeve 23. An annular sleeve 26 is sleeved on the outer wall of the sleeve 23 corresponding to the multiple spray holes 25. A water inlet 27 is opened on the outer wall of the annular sleeve 26. A first atomizing nozzle 28 is snapped into part of the nozzle 25. A second atomizing nozzle 29 is rotatably sleeved into the remaining two nozzles 25 facing the corrugated core layer. A second gear 30 is fixedly sleeved on the second atomizing nozzle 29. A wheel axle 32 is rotatably connected to the outer wall of the sleeve 23. A third gear 31 that meshes with the second gear 30 is fixedly sleeved at one end of the wheel axle 32. A fourth gear 33 is fixedly sleeved at the other end of the wheel axle 32. A first toothed plate 34 meshes on the fourth gear 33. A compensating sleeve 35 is slidably sleeved at the bottom of the outer wall of the sleeve 23. Multiple sliders are connected to the inner wall of the compensating sleeve 35. The multiple sliders are slidably connected to multiple grooves 36 opened in the outer wall of the sleeve 23. A first spring 38 is connected to the top of the slider. The slider is elastically supported and connected to the inner top wall of the groove 36 through the first spring 38. The bottom of the first toothed plate 34 is connected to the top of the compensating sleeve 35.

[0023] This embodiment is specifically as follows: The system controls the first electric cylinder 4 to push the dynamic pressure plate 5 towards the tray 2 on top, where the corrugated paper to be tested is placed, and applies a stable downward pressure to the corrugated paper. During this process, the system sends a control command to the second electric cylinder 24, which pushes the sleeve 23 up and down along the telescopic shaft of the first electric cylinder 4. The compensation sleeve 35 moves down synchronously with the sleeve 23. When the bottom of the compensation sleeve 35 contacts the top of the tester 1, it cannot continue to move down and begins to slide on the sleeve 23. At the same time, it pushes the slider to slide in the slide groove 36 and squeezes the first spring 38 to cause it to undergo elastic deformation. The water inlet 27 is connected to an external hydraulic pump through a pipe. The hydraulic pump injects atomized water into the annular sleeve 26 through a pipe. The atomized water entering the annular sleeve 26 is sprayed onto the corrugated paper in the form of water mist through multiple first atomizing nozzles 28 and two second atomizing nozzles 29, thereby simulating the effect of ambient humidity on the strength of the corrugated paper. Among them, the two second... The atomizing nozzle 29 faces the corrugated core layer of the corrugated paper, which facilitates the rapid penetration of water mist into the core layer and shortens the simulation time. By controlling the atomization time, the influence of different humidity levels on the performance of the corrugated paper can be simulated. The system controls the second electric cylinder 24 to perform a short-stroke telescopic cycle. With the elastic support of the first spring 38, the compensation sleeve 35 and the sleeve 23 move relative to each other. The compensation sleeve 35 drives the first toothed plate 34 to move on the fourth gear 33. The fourth gear 33 then converts the linear force into torque, which is applied to the wheel axle 32. The wheel axle 32 transmits the torque to the second atomizing nozzle 29 through the third gear 31 and the second gear 30, causing the second atomizing nozzle 29 to rotate, thereby changing its spray angle and further accelerating the penetration of water mist into the corrugated core layer. The hydraulic pump and the annular sleeve 26 spray the atomized water evenly through multiple nozzles in the form of water mist, realizing the controllable simulation of the humidity of the environment in which the corrugated paper is used. Furthermore, by adjusting the atomization time, different humidity conditions can be flexibly reproduced.

[0024] Specifically, a mixing fan 58 is rotatably connected to the inner top wall of the sleeve 23. The mixing fan 58 is used to accelerate the flow rate of the water mist. A fifth gear 39 is fixedly sleeved on the mixing fan 58. A third motor 41 is installed on the top of the sleeve 23. A sixth gear 40 is fixedly sleeved at the output end of the third motor 41. The sixth gear 40 meshes with the fifth gear 39.

[0025] Specifically, this implementation involves controlling the operation of the third motor 41. The output shaft of the third motor 41 drives the sixth gear 40 to rotate. The sixth gear 40 cooperates with the fifth gear 39 to transmit torque to the mixing fan 58. During the rapid rotation of the mixing fan 58, the flow of water mist around the corrugated paper is accelerated. The airflow generated by the high-speed rotation of the mixing fan 58 can actively disturb the water mist in the test area, avoiding local accumulation or sparseness of water mist, and making the water mist more evenly distributed on the entire surface of the corrugated paper and in the surrounding space. By enhancing the flow of water mist, the humidity gradient around the corrugated paper is reduced, so that all areas of the corrugated paper are under relatively uniform humidity conditions, providing a stable and controllable environmental basis for performance testing.

[0026] Specifically, an annular groove 51 is provided at the bottom of the inner wall of the compensation sleeve 35. Multiple adapters 52 are connected to the inner wall of the annular groove 51. An adapter shaft 53 is rotatably connected to each adapter 52. A guide plate 55 is fixedly sleeved on the adapter shaft 53. The guide plate 55 is inclined upward to make the airflow flowing along the inner wall of the annular groove 51 flow upward at an angle. A third spring 54 is sleeved on the adapter shaft 53. The guide plate 55 is elastically rotatably connected to the adapter shaft 53 through the third spring 54.

[0027] Specifically, in this embodiment, during the rapid rotation of the mixing fan 58, some water mist is guided to flow downwards along the inner wall of the sleeve 23. The guide plate 55 can guide the water mist near the inner wall of the sleeve 23 to flow obliquely upwards. Since the guide plate 55 is rotatably connected through the adapter shaft 53 and twists the third spring 54 to cause it to undergo elastic deformation, with the help of the elastic support of the third spring 54, the guide plate 55 will rotate through the adapter shaft 53 under the influence of the water mist flow fluctuation, thereby further changing the flow direction of the water mist. The mixing fan 58 first guides some water mist to flow downwards along the inner wall of the sleeve 23, and the guide plate 55 then guides these water mists to flow obliquely upwards, forming a composite flow path of downward guidance and upward guidance, which enhances the circulation and disturbance of water mist in the test area. Through the synergistic effect of multi-directional guidance and dynamic adjustment, the humidity dead zone and local accumulation are reduced, providing a more stable and uniform humidity environment for corrugated paper performance testing, and further improving the accuracy of test results.

[0028] Specifically, the top of the sleeve 23 is provided with multiple air vents 42, and each air vent 42 is nested with a baffle plate 43. The end of the baffle plate 43 is connected to a corner shaft 44, which is rotatably connected to the inner wall of the air vent 42. The top of the sleeve 23 is provided with a corner groove 59 on one side corresponding to the same row of multiple air vents 42. The other end of the corner shaft 44 extends into the corner groove 59 and is fixedly sleeved with a seventh gear 45. A second toothed plate 46 is slidably connected in the corner groove 59. The second toothed plate 46 meshes with the seventh gear 45. The top of multiple second toothed plates 46 is connected to the same first magnetic plate 48. A third toothed plate is provided above the first magnetic plate 48. A bent bracket 50 is connected to the third toothed plate, and the third toothed plate is connected to the top of one of the first toothed plates 34 through the bent bracket 50.

[0029] Specifically, this implementation involves the following steps: After the performance test is completed, the system controls the second electric cylinder 24 to move the sleeve 23 upward. Under the push of the return force of the first spring 38, the compensation sleeve 35 slides downward in the slide groove 36 via the slider. During the downward movement of the compensation sleeve 35, it drives the two first toothed plates 34 to move downward synchronously. One of the first toothed plates 34 drives the second magnetic plate 49 to move closer to the first magnetic plate 48 via the bend bracket 50. Since the magnetic poles of the opposite surfaces of the second magnetic plate 49 and the first magnetic plate 48 are the same, a lateral thrust is generated between them, pushing the first side plate to drive the second toothed plate 46 to slide in the corner groove 59 and compressing the second spring 47 to cause it to undergo elastic deformation. The second toothed plate 46 transmits torque to the corner shaft 44 through the seventh gear 45 meshing with it. The corner shaft 44 drives the wind deflector 43 to rotate in the air outlet 42. With the baffle plate 43 tilted, the mixing fan 58 rotates, guiding the air outside the sleeve 23 to flow downward through the air outlet 42. Each baffle plate 43 is equipped with an electric heater, which heats the air flowing through the air outlet 42, thereby quickly drying the tray 2, the dynamic pressure plate 5, and the inside of the sleeve 23 to facilitate secondary performance testing. The rotating mixing fan 58 guides the external air to flow downward through the air outlet 42, and the electric heater heats the airflow, forming hot air to quickly dry the tray 2, the dynamic pressure plate 5, and the inside of the sleeve 23, effectively eliminating the influence of residual humidity from the previous test. The integration of automatic reset and rapid drying functions significantly shortens the preparation time between two tests, while ensuring that each test is conducted under dry and stable initial conditions, improving test efficiency and data repeatability.

[0030] Specifically, the outer ring surface of the combination sleeve 19 is connected to a bracket 6; A connecting shaft 7 is rotatably connected to the bracket 6. One end of the connecting shaft 7 is connected to a first threaded rod 8. A first motor 9 is installed on the bracket 6. The first motor 9 is connected to the other end of the first threaded rod 8. A first threaded sleeve 11 is threadedly connected to the first threaded rod 8. A first directional hole 12 is opened on the first threaded sleeve 11. A first clamping plate 13 is connected to the first threaded sleeve 11. The other end of the connecting shaft 7 is provided with a second threaded rod 15, the other end of the second threaded rod 15 is rotatably connected to the bracket 6, a second threaded sleeve 56 is threadedly connected to the second threaded rod 15, a second directional hole 57 is opened on the second threaded sleeve 56, and a second clamping plate 18 is connected to the second threaded sleeve 56. The second directional hole 57 and the first directional hole 12 are slidably connected to the same directional shaft 10, and the directional shaft 10 is connected to the bracket 6.

[0031] Specifically, this embodiment is as follows: Before the system controls the first electric cylinder 4 to push the dynamic pressure plate 5 downward, it first controls the first motor 9 to run. The output shaft of the first motor 9 drives the first threaded rod 8 to rotate. The first threaded rod 8 drives the second threaded rod 15 to rotate synchronously through the connecting shaft 7. The thread directions of the first threaded rod 8 and the second threaded rod 15 are opposite to each other, thereby driving the first threaded sleeve 11 and the second threaded sleeve 56 to move closer or further apart. During the movement, the first threaded sleeve 11 and the second threaded sleeve 56 slide along the orientation axis 10, thereby driving the second clamping plate 18 and the first clamping plate 13 to clamp and center the corrugated paper to be tested. Through the synchronous opposing movement of the first clamping plate 13 and the second clamping plate 18, the corrugated paper can be automatically pushed to the center position of the tray 2, achieving precise centering before testing without manual adjustment. The precise automatic centering function ensures that the corrugated paper is in the same force center position during each test, effectively avoiding uneven force and data deviation caused by sample misalignment, and improving the accuracy and repeatability of test results.

[0032] Specifically, the other end of the connecting shaft 7 is provided with a combination groove 14, the end of the second threaded rod 15 is rotatably sleeved in the combination groove 14, the end of the second threaded rod 15 is embedded with a permanent magnet ring 16, and an electromagnet 17 is installed on the connecting shaft 7. The electromagnet 17 and the permanent magnet ring 16 are used together.

[0033] Specifically, in this embodiment: during the process of the moving pressure plate 5 applying stable downward pressure to the corrugated paper, the system controls the first motor 9 to drive the first threaded rod 8 to rotate. During this process, the on / off state of the electromagnet 17 can be controlled according to the test requirements. When the control electromagnet 17 is de-energized, the magnetic attraction between the electromagnet 17 and the permanent magnet ring 16 disappears. At this time, the first threaded rod 8 cannot drive the second threaded rod 15 to rotate via the connecting rod, and can only apply pressure to one side of the corrugated paper. When the control electromagnet 17 is energized, the magnetic attraction between the electromagnet 17 and the permanent magnet ring 16 is restored. At this time, the first threaded rod 8 drives the second threaded rod 15 to rotate via the connecting rod, thereby applying different pressures to the two opposite sides of the corrugated paper. By switching the electromagnet 17 on and off, combined with different humidity environments, the performance of the corrugated paper under multi-factor coupling conditions can be tested. Electricity enables the switching of power transmission between the first threaded rod 8 and the second threaded rod 15, allowing the device to quickly switch between "single-sided pressure" and "double-sided pressure" modes to meet the needs of different testing scenarios. When the electromagnet 17 is energized, the first threaded rod 8 and the second threaded rod 15 rotate synchronously, which can apply different pressures to the two opposite sides of the corrugated paper, simulating the asymmetrical force situation of the carton in actual use. By combining the pressure mode switching function with different humidity environments, it can simulate the performance of corrugated paper under the coupling conditions of "asymmetrical pressure + humidity", providing test data that is closer to the actual use scenario for packaging design.

[0034] Specifically, a toothed ring 20 is fixedly sleeved at the bottom of the outer ring surface of the combination sleeve 19, and a second motor 22 is installed on the top of the tester 1. A first gear 21 is fixedly sleeved at the output end of the second motor 22, and the first gear 21 meshes with the toothed ring 20.

[0035] Specifically, this embodiment involves controlling the operation of the second motor 22. The output shaft of the second motor 22 drives the first gear 21 to rotate. The first gear 21 cooperates with the gear ring 20 to transmit torque to the combined sleeve 19. The combined sleeve 19 drives the bracket 6 on it to rotate, thereby changing the direction of pressure applied to the corrugated paper by the two clamps during the test. By adjusting the direction of pressure application, the performance of the corrugated paper under different force angles can be simulated, such as oblique loading and torsional stress, thus expanding the testing range of the equipment. The direction adjustment function can be used in conjunction with functions such as humidity simulation and pressure mode switching to achieve comprehensive performance testing of corrugated paper under multi-angle and multi-environment coupling conditions.

[0036] During operation, the system controls the first electric cylinder 4 to push the dynamic pressure plate 5 towards the tray 2 on top, where the corrugated paper to be tested is placed, and applies a stable downward pressure to the corrugated paper. During this process, the system sends a control command to the second electric cylinder 24, which pushes the sleeve 23 up and down along the telescopic shaft of the first electric cylinder 4. The compensation sleeve 35 moves down synchronously with the sleeve 23. When the bottom of the compensation sleeve 35 contacts the top of the tester 1, it cannot continue to move down and begins to slide on the sleeve 23. At the same time, it pushes the slider to slide in the slide groove 36 and squeezes the first spring 38 to cause it to deform elastically. The water inlet 27 is connected to an external hydraulic pump through a pipe. The hydraulic pump injects atomized water into the annular sleeve 26 through a pipe. The atomized water entering the annular sleeve 26 is sprayed in the form of water mist through multiple first atomizing nozzles 28 and two second atomizing nozzles 29. The system simulates the effect of ambient humidity on the strength of corrugated paper. Two second atomizing nozzles 29 face the corrugated core layer of the corrugated paper, which facilitates the rapid penetration of water mist into the core layer and shortens the simulation time. By controlling the atomization time, the system can simulate the effect of different humidity levels on the performance of corrugated paper. The system controls the second electric cylinder 24 to perform a short-stroke telescopic cycle. With the elastic support of the first spring 38, the compensation sleeve 35 and the sleeve 23 move relative to each other. The compensation sleeve 35 drives the first toothed plate 34 to move on the fourth gear 33. The fourth gear 33 then converts the linear force into torque, which is applied to the wheel axle 32. The wheel axle 32 transmits the torque to the second atomizing nozzles 29 through the third gear 31 and the second gear 30, causing the second atomizing nozzles 29 to rotate, thereby changing their spray angle and further accelerating the speed at which water mist penetrates into the corrugated core layer. The third motor 41 is controlled to operate. The output shaft of the third motor 41 drives the sixth gear 40 to rotate. The sixth gear 40 cooperates with the fifth gear 39 to transmit torque to the mixing fan 58. During the rapid rotation of the mixing fan 58, the water mist can be accelerated to flow around the corrugated paper, actively disturbing the water mist in the test area, avoiding local accumulation or sparseness of water mist, and making the water mist more evenly distributed on the entire surface of the corrugated paper and in the surrounding space. This provides a stable and controllable environmental basis for performance testing. During the rapid rotation of the mixing fan 58, some water mist is guided downward along the inner wall of the sleeve 23. The guide plate 55 can guide the water mist near the inner wall of the sleeve 23 to flow obliquely upward. Since the guide plate 55 is rotatably connected through the adapter shaft 53 and twists the third spring 54 to make it elastically deformed, with the help of the elastic support of the third spring 54, the guide plate 55 will rotate through the adapter shaft 53 under the influence of the water mist flow fluctuation, thereby further changing the flow direction of the water mist and forming a composite flow path of "downward guidance and upward guidance", which enhances the circulation and disturbance of water mist in the test area, reduces humidity dead zones and local accumulation, and further improves the accuracy of test results. After the performance test is completed, the system controls the second electric cylinder 24 to drive the sleeve 23 upward. Under the push of the return force of the first spring 38, the compensation sleeve 35 slides downward in the slide groove 36 through the slider. During the downward movement of the compensation sleeve 35, it drives the two first toothed plates 34 to move downward synchronously. One of the first toothed plates 34 drives the second magnetic plate 49 to move closer to the first magnetic plate 48 through the bend bracket 50. Since the magnetic poles of the opposite sides of the second magnetic plate 49 and the first magnetic plate 48 are the same, a lateral thrust is generated between them, pushing the first side plate to drive the second toothed plate 46 to slide in the corner groove 59, and squeezing the second spring 47 to cause it to elastically deform. Plate 46 transmits torque to angle shaft 44 through seventh gear 45 meshing with it. Angle shaft 44 drives baffle plate 43 to rotate inside air outlet 42, so that baffle plate 43 is in an inclined state. When the mixing fan 58 rotates, it guides the air outside sleeve 23 to flow downward through air outlet 42. Each baffle plate 43 is equipped with an electric heater, which can heat the air flowing through air outlet 42 to form hot air to quickly dry tray 2, dynamic pressure plate 5 and the inside of sleeve 23, effectively eliminating the influence of residual humidity from the previous test, ensuring that each test is carried out under dry and stable initial conditions, and improving test efficiency and data repeatability. Before the system controls the first electric cylinder 4 to push the dynamic pressure plate 5 downward, it first controls the first motor 9 to run. The output shaft of the first motor 9 drives the first threaded rod 8 to rotate. The first threaded rod 8 drives the second threaded rod 15 to rotate synchronously through the connecting shaft 7. The thread directions of the first threaded rod 8 and the second threaded rod 15 are opposite to each other, thereby driving the first threaded sleeve 11 and the second threaded sleeve 56 to move closer or further away from each other. During the movement, the first threaded sleeve 11 and the second threaded sleeve 56 slide along the orientation axis 10, thereby driving the second clamping plate 18 and the first clamping plate 13 to clamp and center the corrugated paper to be tested, automatically pushing the corrugated paper to the center position of the tray 2, ensuring that the corrugated paper is in the same force center position during each test, avoiding uneven force and data deviation caused by sample misalignment. During the process of the moving pressure plate 5 applying stable downward pressure to the corrugated paper, the system controls the first motor 9 to drive the first threaded rod 8 to rotate. During this process, the on / off state of the electromagnet 17 can be controlled according to the test requirements. When the control electromagnet 17 is de-energized, the magnetic attraction between the electromagnet 17 and the permanent magnet ring 16 disappears. At this time, the first threaded rod 8 cannot drive the second threaded rod 15 to rotate through the connecting rod, and can only apply pressure to one side of the corrugated paper. When the control electromagnet 17 is energized, the electromagnet 17 and the permanent magnet ring 16 regain magnetic attraction. At this time, the first threaded rod 8 drives the second threaded rod 15 to rotate through the connecting rod, so that different pressures can be applied to the two opposite sides of the corrugated paper. By switching the electromagnet 17 on and off, the device can quickly switch between two modes: "single-sided pressure" and "double-sided pressure". When the electromagnet 17 is energized, different pressures can be applied to the two opposite sides of the corrugated paper to simulate the asymmetrical force situation of the carton in actual use. By combining the pressure mode switching function with different humidity environments, the performance of corrugated paper under the coupled conditions of multiple factors such as "asymmetrical pressure + humidity" can be simulated. The second motor 22 is controlled to run. The output shaft of the second motor 22 drives the first gear 21 to rotate. The first gear 21 cooperates with the gear ring 20 to transmit torque to the combined sleeve 19. The combined sleeve 19 drives the bracket 6 on it to rotate, thereby changing the direction of pressure applied to the corrugated paper by the two clamps during the test. By adjusting the direction of pressure application, the performance of corrugated paper under different force angles can be simulated, such as oblique loading and torsional force. The direction adjustment function can be used in conjunction with functions such as humidity simulation and pressure mode switching to achieve comprehensive performance testing of corrugated paper under multi-angle and multi-environment coupling conditions.

[0037] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A corrugated paper performance strength testing bearing device, comprising a tester (1), wherein a tray (2) and a frame (3) are respectively connected to the top of the tester (1), a first electric cylinder (4) is installed on the frame (3), and a dynamic pressure plate (5) cooperating with the tray (2) is connected to the bottom end of the first electric cylinder (4); characterized in that: A sleeve (23) is slidably sleeved on the telescopic shaft of the first electric cylinder (4). A second electric cylinder (24) connected to the top of the sleeve (23) is installed on the frame (3). Multiple spray holes (25) are opened on the outer wall of the sleeve (23). An annular sleeve (26) is sleeved on the outer wall of the sleeve (23) corresponding to the multiple spray holes (25). A water inlet (27) is opened on the outer wall of the annular sleeve (26). A first atomizing nozzle (28) is engaged in part of the spray hole (25), and a second atomizing nozzle (29) is rotatably sleeved in the remaining two spray holes (25) facing the corrugated core layer. A second gear (30) is fixedly sleeved on the second atomizing nozzle (29). A wheel axle (32) is rotatably connected to the outer wall of the sleeve (23). A third gear (31) that meshes with the second gear (30) is fixedly sleeved at one end of the wheel axle (32), and a fourth gear (33) is fixedly sleeved at the other end of the wheel axle (32). A first toothed plate (34) meshes on the fourth gear (33). A compensation sleeve (35) is slidably sleeved at the bottom of the outer wall of the sleeve (23). A plurality of sliders are connected to the inner wall of the compensation sleeve (35). The plurality of sliders are slidably connected to a plurality of grooves (36) opened in the outer wall of the sleeve (23). A first spring (38) is connected to the top of the slider. The slider is elastically supported and connected to the inner top wall of the groove (36) through the first spring (38). The bottom of the first toothed plate (34) is connected to the top of the compensation sleeve (35).

2. The strength detection bearing device for corrugated paper according to claim 1, characterized in that: The bottom of the inner wall of the compensation sleeve (35) is provided with an annular groove (51). The inner wall of the annular groove (51) is connected to a plurality of adapter frames (52). Each adapter frame (52) is rotatably connected to an adapter shaft (53). A guide plate (55) is fixedly sleeved on the adapter shaft (53). The guide plate (55) is inclined upward so that the airflow flowing along the inner wall of the annular groove (51) flows upward at an incline. A third spring (54) is sleeved on the adapter shaft (53). The guide plate (55) is elastically rotatably connected to the adapter shaft (53) through the third spring (54).

3. The corrugated paper performance strength testing bearing device according to claim 2, characterized in that: The inner top wall of the sleeve (23) is rotatably connected to a mixing fan (58), which is used to accelerate the flow rate of water mist. A fifth gear (39) is fixedly sleeved on the mixing fan (58). A third motor (41) is installed on the top of the sleeve (23). A sixth gear (40) is fixedly sleeved on the output end of the third motor (41). The sixth gear (40) meshes with the fifth gear (39).

4. The corrugated paper performance strength testing bearing device according to claim 3, characterized in that: The top of the sleeve (23) is provided with multiple air vents (42), and each air vent (42) is nested with a baffle plate (43). The end of the baffle plate (43) is connected to a corner shaft (44). The corner shaft (44) is rotatably connected to the inner wall of the air vent (42). The top of the sleeve (23) is provided with a corner groove (59) on one side corresponding to the same row of multiple air vents (42). The other end of the corner shaft (44) extends into the corner groove (59) and is fixedly sleeved with a seventh gear (45). A second toothed plate (46) is slidably connected in the corner groove (59). The second toothed plate (46) meshes with the seventh gear (45). The top of multiple second toothed plates (46) is connected to the same first magnetic plate (48). A third toothed plate is provided above the first magnetic plate (48), and a bend bracket (50) is connected to the third toothed plate. The third toothed plate is connected to the top of one of the first toothed plates (34) through the bend bracket (50).

5. The corrugated paper performance strength testing bearing device according to claim 4, characterized in that: The tray (2) is fitted with a combination sleeve (19), and the outer ring surface of the combination sleeve (19) is connected to a bracket (6). A connecting shaft (7) is rotatably connected to the bracket (6). One end of the connecting shaft (7) is connected to a first threaded rod (8). A first motor (9) is installed on the bracket (6). The first motor (9) is connected to the other end of the first threaded rod (8). A first threaded sleeve (11) is threadedly connected to the first threaded rod (8). A first directional hole (12) is opened on the first threaded sleeve (11). A first clamping plate (13) is connected to the first threaded sleeve (11).

6. The corrugated paper performance strength testing bearing device according to claim 5, characterized in that: The other end of the connecting shaft (7) is provided with a second threaded rod (15), the other end of the second threaded rod (15) is rotatably connected to the bracket (6), a second threaded sleeve (56) is threadedly connected to the second threaded rod (15), a second directional hole (57) is opened on the second threaded sleeve (56), and a second clamping plate (18) is connected to the second threaded sleeve (56). The second directional hole (57) and the first directional hole (12) are slidably connected to the same directional shaft (10), and the directional shaft (10) is connected to the bracket (6).

7. The corrugated paper performance strength testing bearing device according to claim 6, characterized in that: The other end of the connecting shaft (7) is provided with a combination groove (14), the end of the second threaded rod (15) is rotatably sleeved in the combination groove (14), the end of the second threaded rod (15) is embedded with a permanent magnet ring (16), an electromagnet (17) is installed on the connecting shaft (7), and the electromagnet (17) is used in conjunction with the permanent magnet ring (16).

8. The corrugated paper performance strength testing bearing device according to claim 7, characterized in that: A toothed ring (20) is fixedly sleeved on the bottom of the outer ring surface of the combined sleeve (19). A second motor (22) is installed on the top of the tester (1). A first gear (21) is fixedly sleeved on the output end of the second motor (22). The first gear (21) meshes with the toothed ring (20).

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