A device for testing the compressive strength of the hanging corners of packaging cartons

Abstract

This invention discloses a device for testing the compression resistance of the corners of packaging cartons, belonging to the field of compression testing devices. It includes a concave worktable with conveyor belts on both sides of the concave worktable's groove. Two parallel test boxes are fixedly connected to the upper center of the conveyor belts. A pushing mechanism is located on one side of the upper conveyor belt, and a dispensing mechanism is located on the other side. Each test box has a test cavity inside, with symmetrical inlets and outlets communicating with the test cavity on both sides. A rotary feeding mechanism is located below the test cavity, and a multi-directional compression testing component is located above the test cavity. The rotary feeding mechanism specifically includes a rotating roller rotatably connected to the lower part of the test cavity. This invention can more realistically simulate the complex working environment of a square carton when it is actually dropped or collided, thereby reducing the error of the final test results and having high representativeness.

Description

Technical Field

[0001] This invention relates to the field of compression testing devices, specifically a device for testing the compression resistance of the corner of a packaging carton. Background Technology

[0002] Packaging cartons are containers made of corrugated cardboard or other types of cardboard, designed for storing, protecting, and transporting various goods. They come in a variety of sizes, shapes, and strengths to suit the packaging needs of different products, with the most common shape being square. Square packaging cartons have eight hanging corners, each with three areas and a junction point. During use, the hanging corners are the most vulnerable to impacts on square packaging cartons; therefore, manufacturers need to conduct compression resistance tests on the hanging corners of the produced square packaging cartons.

[0003] When a square cardboard box is dropped or subjected to an external impact, the pressure is not applied to a single area at one corner, but rather to multiple areas at one corner simultaneously, or to areas at two corners simultaneously. However, existing testing devices for the compressive strength of square cardboard box corners typically only test one area at the corner, failing to realistically simulate the complex working environment of a square cardboard box during actual drops or impacts. This results in certain errors in the final test results, making them less representative and thus having certain shortcomings.

[0004] Therefore, those skilled in the art have provided a device for testing the compressive strength of the corner of a packaging carton to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to provide a device for testing the compressive strength of the corner of a packaging carton, which can more realistically simulate the complex working environment of a square carton when it is actually dropped or collided, thereby reducing the error of the final test results and having high representativeness, so as to solve the problems mentioned in the background art.

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

[0007] A device for testing the compressive strength of the corner of a packaging carton includes a concave worktable. Conveyor belts are provided on both sides of the groove inside the concave worktable, and two parallel test boxes are fixedly connected to the middle position above the conveyor belts. A pushing mechanism is provided on one side above the conveyor belts, and a material dispensing mechanism is provided on the other side above the conveyor belts.

[0008] The test chamber has a test cavity inside, and the test chamber has symmetrical inlets and outlets on both sides that communicate with the test cavity. A rotary feeding mechanism is provided at the bottom of the test cavity, and a multi-directional pressure resistance test component is provided at the top of the test cavity.

[0009] As a further embodiment of the present invention: the rotary feeding mechanism specifically includes: a rotary roller rotatably connected to the lower part of the test chamber; a drive motor is fixedly connected to one side of the test box corresponding to the position of the rotary roller, and the output shaft of the drive motor is fixedly connected to the rotary roller; connecting rods are symmetrically fixedly connected to the middle positions of the two sides of the rotary roller, and a cross-shaped fixing plate is fixedly connected to one end of the connecting rod; strip-shaped clamping plates are fixedly connected to the four ends of the cross-shaped fixing plate; telescopic components are provided between the four strip-shaped clamping plates; and a slot is opened on the bottom surface of the concave worktable below the rotary roller.

[0010] As a further embodiment of the present invention: the telescopic component specifically includes: a strip groove formed on the inner side of the strip plate, a lead screw rotatably connected inside the strip groove, and a stepper motor embedded in the inner wall of one side of the strip groove, the output shaft of the stepper motor being fixedly connected to the lead screw, a matching movable plate being movably connected inside the strip groove, the lead screw passing through the movable plate and threadedly connected to it, and a cross movable plate being fixedly connected between the four movable plates.

[0011] As a further embodiment of the present invention: the multi-directional compressive strength testing assembly specifically includes: a first annular plate rotatably connected to the upper part of the test chamber; a rotation drive mechanism is provided between the outer side of the first annular plate and the inner wall of the test chamber; a second annular plate is fixedly connected to the upper part of the inner wall of the first annular plate; a square cardboard box is provided above the conveyor belt; the corner of the square cardboard box includes a first area, a second area, a third area, and a junction point; two parallel vertical test cylinders are embedded on the top surface of the second annular plate, and the vertical test cylinders can be aligned with the first area; two symmetrical oblique test cylinders are embedded on the inner wall of the first annular plate, and the oblique test cylinders can be aligned with the junction point; a horizontal test cylinder is embedded on one side of the oblique test cylinder, and the horizontal test cylinder can be aligned with the second area; a vertical test cylinder is embedded on the other side of the oblique test cylinder, and the vertical test cylinder can be aligned with the third area; and pressure plates are fixedly connected to the output shafts of the vertical test cylinder, oblique test cylinder, horizontal test cylinder, and vertical test cylinder.

[0012] As a further embodiment of the present invention: the rotary drive mechanism specifically includes: an annular groove formed above the outer side of the first annular plate; a plurality of evenly distributed support slides are fixedly connected to the inner wall of the test cavity at the position corresponding to the annular groove, and the support slides are movably connected to the annular groove; a rotary motor is fixedly connected above the support slides; a bevel gear is fixedly connected to the output shaft of the rotary motor; and a gear ring meshing with the bevel gear is fixedly connected to the top surface of the first annular plate.

[0013] As a further embodiment of the present invention: four evenly distributed first cameras are embedded on the inner wall of the first annular plate, and a second camera is embedded on the top wall of the test cavity above the second annular plate.

[0014] As a further embodiment of the present invention: the pushing mechanism specifically includes: a first pushing cylinder symmetrically fixed at the top of the inner wall on both sides of the concave worktable groove, and the output shaft of the first pushing cylinder is fixedly connected to a first pushing plate.

[0015] As a further embodiment of the present invention: the material distribution mechanism specifically includes: two second push cylinders fixed diagonally on the top of the inner walls of the concave worktable grooves on both sides, the output shaft of the second push cylinders being fixedly connected to a second push plate, and a diagonal guide plate being fixedly connected to one side of the second push cylinders, with the top of the diagonal guide plate penetrating into the groove of the concave worktable, and the guiding directions of the two diagonal guide plates being opposite.

[0016] As a further embodiment of the present invention: the bottom end face of the concave worktable is fixedly connected to both sides with support legs.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Compared with traditional compression testing devices, the testing device of this application has three different working modes. In the first working mode, an independent compression test can be performed on a certain area at a single corner of a square cardboard box. In the second working mode, multiple areas at a certain corner of a square cardboard box can be simultaneously tested for compression. In the third working mode, a certain area at two adjacent corners at the same height on the same side of a square cardboard box can be simultaneously tested for compression. The three working modes can more realistically simulate the complex working environment of a square cardboard box when it is actually dropped or collided, thereby reducing the error of the final test results and having higher representativeness.

[0019] 2. The rotary feeding mechanism of this application can not only effectively transfer square cartons, but also ensure the stability of square cartons in compression tests. In addition, after the four corners of the square cartons are tested, they can be rotated 180 degrees to facilitate testing of the other four corners without manual intervention, and the degree of automation is high.

[0020] 3. This application, through the multi-directional compressive strength testing component, can drive the first annular plate to rotate horizontally as needed, thereby automatically completing the transfer of the pressure testing station and testing each hanging corner of the square carton.

[0021] 4. This application, through the set conveyor belt, rotary feeding mechanism and multi-directional compression testing components, can automatically complete the compression test of the eight hanging corners of the square carton. Compared with traditional testing, it is not only more comprehensive and efficient, but also does not require manual intervention. The overall automation level is high, saving time and effort. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a device for testing the compressive strength of the hanging corner of a packaging carton.

[0023] Figure 2 This is a combined view of the conveyor belt and rotating roller in a device for testing the compressive strength of the corner of a packaging carton;

[0024] Figure 3 This is a combined view of a ring plate and a square carton in a device for testing the compressive strength of the corner of a packaging carton;

[0025] Figure 4 This is a combined view of the cross-shaped fixed plate and the cross-shaped movable plate in a device for testing the compressive strength of the corner of a packaging carton;

[0026] Figure 5 This is a view of the combination of a strip groove and a lead screw in a device for testing the compressive strength of the corner of a packaging carton;

[0027] Figure 6 In a device for testing the compressive strength of the hanging corner of a packaging carton Figure 1 Enlarged view of part A;

[0028] Figure 7 This is a side view of a device for testing the compressive strength of the hanging corner of a packaging carton.

[0029] Figure 8 This is a schematic diagram of the structure of a square cardboard box in a device for testing the compressive strength of the corners of a packaging carton.

[0030] In the diagram: 1. Support leg; 2. Concave worktable; 3. Conveyor belt; 4. First push cylinder; 5. First push plate; 6. Test box; 7. Test chamber; 8. Rotating roller; 9. Drive motor; 10. Connecting rod; 11. Cross fixing plate; 12. Strip clamping plate; 13. Cross movable plate; 14. Strip groove; 15. Lead screw; 16. Stepper motor; 17. Moving plate; 18. Groove opening; 19. Inlet / outlet; 20. First annular plate; 21. Annular chute; 22. Support 23. Slide board; 24. Rotary motor; 25. Bevel gear; 26. Gear ring; 27. Second annular plate; 28. Longitudinal test cylinder; 29. ​​Lateral test cylinder; 30. Vertical test cylinder; 31. Angled test cylinder; 32. First camera; 33. Second camera; 34. Square cardboard box; 35. Second push cylinder; 36. Second push plate; 37. Angled guide plate; 38. Second area; 39. Third area; 40. First area; 51. Intersection point. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] As mentioned in the background section of this application, research has found that when a square cardboard box 33 is dropped or subjected to an external impact, it is not just a single area at one corner that is subjected to pressure, but rather multiple areas at one corner or a single area at two corners that are subjected to pressure simultaneously. However, existing testing devices for the compressive strength of the corners of square cardboard boxes 33 typically test only one area at the corners of the box, which cannot realistically simulate the complex working environment of the square cardboard box 33 when it is actually dropped or impacted. Consequently, the final test results have certain errors, are not highly representative, and have certain defects.

[0033] To address the aforementioned shortcomings, this application discloses a testing device for the compressive strength of the corner of a packaging carton. This device can more realistically simulate the complex working environment of a square carton 33 when it is actually dropped or collided, thereby reducing the error in the final test results and having high representativeness.

[0034] The following will describe in detail, with reference to the accompanying drawings, how the solution of this application solves the above-mentioned technical problems.

[0035] Please see Figures 1-8In this embodiment of the invention, a device for testing the compressive strength of the corner of a packaging carton includes a concave worktable 2. Conveyor belts 3 are provided on both sides of the recess of the concave worktable 2. Two parallel test boxes 6 are fixedly connected to the upper middle position of the conveyor belts 3. A pushing mechanism is provided on one side of the upper part of the conveyor belts 3, and a material dispensing mechanism is provided on the other side. A test chamber 7 is opened inside the test box 6, and inlets and outlets 19 communicating with the test chamber 7 are symmetrically opened on both sides of the test box 6. A rotary feeding mechanism is provided at the lower part of the test chamber 7, and a multi-directional compressive strength testing component is provided at the upper part of the test chamber 7. This application can more realistically simulate the complex working environment of a square carton 33 when it is actually dropped or collided, thereby reducing the error of the final test results and having high representativeness.

[0036] In this embodiment, the rotary feeding mechanism specifically includes: a rotary roller 8 rotatably connected to the lower part of the test chamber 7; a drive motor 9 fixedly connected to one side of the test box 6 corresponding to the position of the rotary roller 8, and the output shaft of the drive motor 9 fixedly connected to the rotary roller 8; connecting rods 10 symmetrically fixedly connected to the middle positions of the two sides of the rotary roller 8; a cross-shaped fixing plate 11 fixedly connected to one end of the connecting rod 10; strip-shaped clamping plates 12 fixedly connected to the four ends of the cross-shaped fixing plate 11; telescopic components provided between the four strip-shaped clamping plates 12; and a slot 18 opened on the bottom surface of the concave worktable 2 below the rotary roller 8. Through the rotary feeding mechanism, not only can the square cardboard box 33 be effectively transferred, but the stability of the square cardboard box 33 in the compression test can also be ensured. Furthermore, after the four corners of the square cardboard box 33 are tested, it can be rotated 180 degrees to facilitate testing of the other four corners without manual intervention, resulting in a high degree of automation.

[0037] In this embodiment, the telescopic component specifically includes: a strip groove 14 formed on the inner side of the strip plate 12; a lead screw 15 rotatably connected inside the strip groove 14; a stepper motor 16 embedded in the inner wall of one side of the strip groove 14; the output shaft of the stepper motor 16 fixedly connected to the lead screw 15; a matching movable plate 17 movably connected inside the strip groove 14; the lead screw 15 passing through the movable plate 17 and threadedly connected to it; and a cross-shaped movable plate 13 fixedly connected between the four movable plates 17. The telescopic component allows the top of the square cardboard box 33 to enter the first annular plate 20 to complete the compression test.

[0038] In this embodiment, the multi-directional compressive strength testing assembly specifically includes: a first annular plate 20 rotatably connected to the upper part of the test chamber 7; a rotation drive mechanism is provided between the outer side of the first annular plate 20 and the inner wall of the test chamber 7; a second annular plate 26 is fixedly connected to the upper part of the inner wall of the first annular plate 20; a square cardboard box 33 is provided above the conveyor belt 3; the corner of the square cardboard box 33 includes a first region 39, a second region 37, a third region 38, and an intersection point 40; two parallel vertical test cylinders 29 are embedded on the top surface of the second annular plate 26; and the vertical test cylinders 29 can interact with the first region 39. For alignment and matching, two symmetrical oblique test cylinders 30 are embedded on the inner wall of the first annular plate 20, and the oblique test cylinders 30 can be aligned and matched with the intersection point 40. A transverse test cylinder 28 is embedded on one side of the oblique test cylinder 30, and the transverse test cylinder 28 can be aligned and matched with the second area 37. A longitudinal test cylinder 27 is embedded on the other side of the oblique test cylinder 30, and the longitudinal test cylinder 27 can be aligned and matched with the third area 38. The output shafts of the vertical test cylinder 29, the oblique test cylinder 30, the transverse test cylinder 28 and the longitudinal test cylinder 27 are all fixedly connected to pressure plates. This application, through its multi-directional compression testing components, offers three different operating modes compared to traditional compression testing devices. In the first mode, an independent compression test can be performed on a specific area at a single corner of the square cardboard box 33. In the second mode, multiple areas at a single corner of the square cardboard box 33 can be simultaneously tested. In the third mode, two adjacent corners at the same height on the same side of the square cardboard box 33 can be simultaneously tested. These three operating modes can more realistically simulate the complex working environment of the square cardboard box 33 when it is actually dropped or collided, thereby reducing the error in the final test results and providing higher representativeness.

[0039] In this embodiment, the rotary drive mechanism specifically includes: an annular groove 21 formed above the outer side of the first annular plate 20; multiple evenly distributed support slide plates 22 fixedly connected to the inner wall of the test cavity 7 at positions corresponding to the annular groove 21, and the support slide plates 22 are movably connected to the annular groove 21; a rotary motor 23 is fixedly connected above the support slide plates 22; a bevel gear 24 is fixedly connected to the output shaft of the rotary motor 23; and a gear ring 25 meshing with the bevel gear 24 is fixedly connected to the top surface of the first annular plate 20. This application, through the multi-directional pressure resistance testing component, can drive the first annular plate 20 to rotate horizontally as needed, thereby automatically completing the transfer of the pressure testing position and testing each hanging corner of the square cardboard box 33.

[0040] In this embodiment, four evenly distributed first cameras 31 are embedded in the inner wall of the first annular plate 20, and a second camera 32 is embedded in the top wall of the test cavity 7 above the second annular plate 26. The first cameras 31 and the second cameras 32 are used to capture images of the square cardboard box 33 after the compression test. After the images are sent to the background control terminal, the background control terminal analyzes and identifies the images to determine whether the compression test of the square cardboard box 33 is qualified.

[0041] In this embodiment, the centering mechanism specifically includes: a first pushing cylinder 4 symmetrically fixed to the top of the inner walls on both sides of the concave worktable 2, and a first pushing plate 5 fixedly connected to the output shaft of the first pushing cylinder 4. The centering mechanism is used to center and align the square cardboard box 33.

[0042] In this embodiment, the material separating mechanism specifically includes: two second push cylinders 34 fixed diagonally to the top of the inner walls on both sides of the concave worktable 2. The output shafts of the second push cylinders 34 are fixedly connected to second push plates 35. An inclined guide plate 36 is fixedly connected to one side of each second push cylinder 34, with the top of the inclined guide plate 36 extending into the concave worktable 2. The guiding directions of the two inclined guide plates 36 are opposite. The material separating mechanism is used to separate and export qualified and unqualified products that have completed the test.

[0043] In this embodiment, support legs 1 are fixedly connected to both sides of the bottom end face of the concave worktable 2 to support the concave worktable 2.

[0044] The working principle of this invention is as follows: First, the square cardboard box 33 to be tested is placed on the left side of the conveyor belt 3. The conveyor belt 3 moves the square cardboard box 33 forward. When the square cardboard box 33 reaches the pushing mechanism, the two first pushing cylinders 4 of the pushing mechanism simultaneously extend their output shafts, causing the two first pushing plates 5 to approach each other. The two first pushing plates 5 push the square cardboard box 33 to the center position of the concave worktable 2, and it continues to move forward with the conveyor belt 3. Next, the square cardboard box 33 enters the testing chamber 7 inside the left-side testing box 6 through the inlet / outlet 19. At this time, the rotary feeding mechanism inside the testing chamber 7 works in conjunction with the multi-directional compression testing components to perform compression tests on four of the hanging corners of the square cardboard box 33.

[0045] The working process of the rotary feeding mechanism is as follows: after the square carton 33 completes the centering and positioning, it moves along the conveyor belt 3 to just enter between the four strip plates 12. After the square carton 33 is completely between the four strip plates 12, it contacts the cross movable plate 13. Then, the drive motor 9 runs and drives the rotating roller 8 to rotate 90 degrees clockwise. During this process, the connecting rod 10 and the cross fixed plate 11 rotate along with it. The square carton 33 is restricted by the four strip plates 12 and also rotates along with it. At this time, the square carton 33 is transferred to the top of the rotating roller 8. Then, the stepper motor 16 of the telescopic component runs and drives the lead screw 15 to rotate. The moving plate 17 slowly rises along the lead screw 15 in the strip groove 14. During this process, the cross movable plate 13 supporting the square carton 33 rises along with it, so that the top of the square carton 33 rises to the preset height inside the first annular plate 20 to prepare for the multi-directional compression test component.

[0046] After the square cardboard box 33 reaches the preset height, the two vertical test cylinders 29 align with the first area 39 at the two corners, the two diagonal test cylinders 30 align with the intersection point 40 at the two corners, the two transverse test cylinders 28 align with the second area 37 at one corner and the third area 38 at the other corner, and the two longitudinal test cylinders 27 align with the third area 38 at one corner and the second area 37 at the other corner. The multi-directional compression testing assembly has three different working modes. In the first mode, an independent compression test can be performed on a single area at one corner of the square cardboard box 33. Specifically, pressure is applied to the corresponding area using any one of the vertical test cylinders 29, diagonal test cylinders 30, transverse test cylinders 28, or longitudinal test cylinders 27. In the second mode, multiple areas at a corner of the square cardboard box 33 can be simultaneously tested for compression. Specifically, multiple areas at a corner are simultaneously tested using the four test cylinders corresponding to that corner. In the third working mode, a synchronous compression test can be performed on a certain area at two adjacent hanging corners on the same side and at the same height of the square cardboard box 33, that is, by applying pressure through two corresponding test cylinders. The three working modes can more realistically simulate the complex working environment of the square cardboard box 33 when it is actually dropped or collided, thereby reducing the error of the final test results and having high representativeness.

[0047] It should be noted that not all four hanging corners of the square cardboard box 33 are at the testing station. Therefore, this application uses a rotary drive mechanism to drive the first annular plate 20 to rotate horizontally, thereby automatically transferring the pressure testing station and testing each hanging corner of the square cardboard box 33. The specific working process of the rotary drive mechanism is as follows: the rotary motor 23 drives the bevel gear 24 to rotate. Since the bevel gear 24 meshes with the gear ring 25, as the bevel gear 24 rotates, the gear ring 25 and the first annular plate 20 rotate accordingly. During the process, the support slide plate 22 and the annular slide groove 21 undergo relative displacement.

[0048] After testing is completed at all four corners of the top of the square cardboard box 33, the stepper motor 16 of the telescopic component drives the lead screw 15 to rotate in the opposite direction and return to its initial position. At this time, the square cardboard box 33 falls completely between the four strip pallets 12. Immediately afterwards, the drive motor 9 drives the rotating roller 8 to rotate 90 degrees clockwise. The square cardboard box 33 is then placed flat on the conveyor belt 3. The conveyor belt 3 moves the square cardboard box 33 away from the rotary feeding mechanism in the left test chamber 7 and feeds it into the rotary feeding mechanism in the right test chamber 7. The rotary feeding mechanism in the right test chamber 7 then works in conjunction with the multi-directional compression testing components to perform compression tests on the other four corners of the square cardboard box 33. In addition, to improve the efficiency of the square cardboard box 33 detaching from the rotary feeding mechanism, the square cardboard box 33 can be quickly detached from the strip pallets 12 by driving the cross movable plate 13 to move outward.

[0049] During the testing process, the first camera 31 and the second camera 32 capture images of the square cardboard box 33 after the compression test and send the images to the back-end control terminal. The back-end control terminal analyzes and identifies the images to determine whether the compression test of the square cardboard box 33 is qualified. After the square cardboard box 33 completes the test at all the corners and is sent out of the test box 6 on the right, the qualified and unqualified products are separated and exported by the material sorting mechanism. Specifically, if the compression test of the square cardboard box 33 is qualified, when the square cardboard box 33 passes the first second push cylinder 34, the second push cylinder 34 extends the output shaft to drive the second push plate 35 to push the square cardboard box 33 into the first inclined guide plate 36, and the first inclined guide plate 36 sends out the qualified square cardboard box 33. If the square carton 33 fails the compression test, when the square carton 33 passes the second second push cylinder 34, the second push cylinder 34 extends its output shaft to drive the corresponding second push plate 35 to push the square carton 33 into the second inclined guide plate 36, and the second inclined guide plate 36 sends out the unqualified square carton 33.

[0050] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the compressive strength of the hanging corner of a packaging carton, characterized in that, The concave worktable (2) is provided with conveyor belts (3) on both sides of the groove of the concave worktable (2), and two parallel test boxes (6) are fixedly connected at the middle position above the conveyor belt (3). A pushing mechanism is provided on one side above the conveyor belt (3), and a material distribution mechanism is provided on the other side above the conveyor belt (3). The test chamber (6) has a test cavity (7) inside, and the test chamber (6) has inlet and outlet (19) connected to the test cavity (7) on both sides. The test cavity (7) has a rotary feeding mechanism at the bottom inside, and a multi-directional compressive strength test component at the top inside. The rotary feeding mechanism specifically includes: a rotary roller (8) rotatably connected to the lower part of the test chamber (7); a drive motor (9) is fixedly connected to one side of the test box (6) corresponding to the position of the rotary roller (8); the output shaft of the drive motor (9) is fixedly connected to the rotary roller (8); a connecting rod (10) is symmetrically fixedly connected to the middle position of the two sides of the rotary roller (8); a cross fixing plate (11) is fixedly connected to one end of the connecting rod (10); a strip-shaped clamping plate (12) is fixedly connected to each of the four ends of the cross fixing plate (11); a telescopic component is provided between the four strip-shaped clamping plates (12); and a slot (18) is opened on the bottom surface of the concave worktable (2) below the rotary roller (8). The telescopic component specifically includes: a strip groove (14) opened on the inner side of the strip plate (12), a lead screw (15) rotatably connected inside the strip groove (14), and a stepper motor (16) embedded in the inner wall of one side of the strip groove (14). The output shaft of the stepper motor (16) is fixedly connected to the lead screw (15). A matching movable plate (17) is movably connected inside the strip groove (14). The lead screw (15) passes through the movable plate (17) and is threadedly connected to it. A cross movable plate (13) is fixedly connected between the four movable plates (17). The multi-directional compressive strength testing assembly specifically includes: a first annular plate (20) rotatably connected to the upper part of the test chamber (7), a rotation drive mechanism being provided between the outer side of the first annular plate (20) and the inner wall of the test chamber (7), and a second annular plate (26) fixedly connected to the upper part of the inner wall of the first annular plate (20); a square cardboard box (33) being provided above the conveyor belt (3), and the corner of the square cardboard box (33) including a first area (39), a second area (37), a third area (38), and an intersection point (40); two parallel vertical test cylinders (29) are embedded on the top surface of the second annular plate (26), and the vertical test cylinders (29) can interact with the first area (39). For alignment and matching, two symmetrical inclined test cylinders (30) are embedded on the inner wall of the first annular plate (20), and the inclined test cylinders (30) can be aligned and matched with the intersection point (40). A transverse test cylinder (28) is embedded on one side of the inclined test cylinder (30), and the transverse test cylinder (28) can be aligned and matched with the second area (37). A longitudinal test cylinder (27) is embedded on the other side of the inclined test cylinder (30), and the longitudinal test cylinder (27) can be aligned and matched with the third area (38). The output shafts of the vertical test cylinder (29), the inclined test cylinder (30), the transverse test cylinder (28), and the longitudinal test cylinder (27) are all fixedly connected to pressure plates.

2. The device for testing the compressive strength of the hanging corner of a packaging carton according to claim 1, characterized in that, The rotary drive mechanism specifically includes: an annular groove (21) opened above the outer side of the first annular plate (20); a plurality of evenly distributed support slide plates (22) are fixedly connected to the inner wall of the test cavity (7) at the position corresponding to the annular groove (21); the support slide plates (22) are movably connected to the annular groove (21); a rotary motor (23) is fixedly connected above the support slide plates (22); a bevel gear (24) is fixedly connected to the output shaft of the rotary motor (23); and a gear ring (25) that meshes with the bevel gear (24) is fixedly connected to the top surface of the first annular plate (20).

3. The device for testing the compressive strength of the hanging corner of a packaging carton according to claim 2, characterized in that, Four evenly distributed first cameras (31) are embedded on the inner wall of the first annular plate (20), and a second camera (32) is embedded on the top wall of the test cavity (7) above the second annular plate (26).

4. The device for testing the compressive strength of the hanging corner of a packaging carton according to claim 3, characterized in that, The pushing mechanism specifically includes: a first pushing cylinder (4) symmetrically fixed at the top of the inner wall of the groove on both sides of the concave worktable (2), and the output shaft of the first pushing cylinder (4) is fixedly connected to a first pushing plate (5).

5. The device for testing the compressive strength of the hanging corner of a packaging carton according to claim 4, characterized in that, The material distribution mechanism specifically includes: two second push cylinders (34) fixed diagonally on the top of the inner walls of the grooves on both sides of the concave worktable (2), the output shaft of the second push cylinder (34) is fixedly connected to a second push plate (35), and a diagonal guide plate (36) is fixedly connected to one side of the second push cylinder (34), and the top of the diagonal guide plate (36) extends into the groove of the concave worktable (2), and the two diagonal guide plates (36) have opposite guiding directions.

6. The device for testing the compressive strength of the hanging corner of a packaging carton according to claim 1, characterized in that, The concave worktable (2) has support legs (1) fixedly connected to both sides of its bottom end face.

Images