Carton compression resistance detection device and detection method

Abstract

The invention relates to the technical field of compression resistance detection, in particular to a carton compression resistance detection device and detection method.The carton compression resistance detection device comprises a frame body structure, an air cylinder is fixedly installed on the frame body structure, and a center plate is arranged at the action end of the air cylinder; the adjusting structure is connected with the center plate and the action end, a pressure sensor is arranged on the adjusting structure, and the pressure sensor can detect the pressure difference borne by the four-corner lock of the center plate; the extension mechanism is connected with the center plate, and the extension mechanism comprises a first extension assembly and a second extension assembly; the transverse moving structure is installed on the center plate, and when the transverse moving structure acts, the first extending assembly and the second extending assembly can be sequentially driven to act, so that the lower surface of the first extending assembly and the lower surface of the second extending assembly are coplanar with the lower surface of the center plate to be matched with cartons of different models.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compression resistance detection, and particularly relates to a carton compression resistance detection device and a detection method. BACKGROUND

[0002] As an indispensable part of modern logistics, cartons bear the responsibility of containing, protecting products and being beautiful, and the most important function of cartons is their good protection, and the compression strength is a comprehensive embodiment of the protection performance of cartons and is the most basic performance of cartons.

[0003] When the compression resistance of cartons is detected, professional equipment needs to be used, and the equipment acts on the top plane of the carton through a pressing plate to calculate the maximum pressure that the carton can withstand when it collapses under pressure. For the existing equipment, although it is simple and easy to operate when detecting a single type of carton, when detecting a plurality of varieties of small batches of cartons, the detection period is lengthened due to the frequent replacement of the pressing plate, and for the pressing plate with a large area, the flatness of the pressing plate is difficult to guarantee, and the pressing plate cannot be completely attached to the carton during pressing, which reduces the detection accuracy. SUMMARY

[0004] The present application aims to provide a carton compression resistance detection device and a detection method to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A carton compression resistance detection device, comprising: A frame structure, a gas cylinder is fixedly installed on the frame structure, and a center plate is arranged on the action end of the gas cylinder; An adjustment structure connected to the center plate and the action end, a pressure sensor is arranged on the adjustment structure, and the pressure sensor can detect the pressure difference borne by the four corners of the center plate; An extension mechanism connected to the center plate, the extension mechanism comprising a first extension assembly and a second extension assembly; A horizontal moving structure installed on the center plate, when the horizontal moving structure acts, it can in turn drive the first extension assembly and the second extension assembly to act, so that the lower surfaces of the first extension assembly and the second extension assembly are coplanar with the lower surface of the center plate.

[0006] As a further scheme of the present application, the adjustment structure comprises a ball head arranged on the action end and a spherical connecting seat arranged on the center plate, and the ball head can move in the spherical connecting seat; The adjusting structure further comprises four first electric telescopic rods rotatably connected to four corners of the center plate, and the first electric telescopic rods are provided with the pressure sensors at one ends away from the center plate, and the pressure sensors are rotatably connected to the action end.

[0007] As a further scheme of the present application, a plurality of connecting plates are fixedly installed on the center plate. The first extending assembly comprises four first extending plates rotatably connected to four edges of the center plate, and the first extending plates are connected to the connecting plates through first cylindrical springs. The center plate is provided with a right-angle abutting surface, and the first extending plate is provided with a stop surface matched with the right-angle abutting surface.

[0008] As a further scheme of the present application, the second extending assembly comprises a connecting shaft slidably connected to the connecting plate and a second extending plate fixedly installed on the connecting shaft, a second cylindrical spring is sleeved on the connecting shaft, one end of the second cylindrical spring is connected to the connecting plate, and the other end is connected to the second extending plate.

[0009] As a further scheme of the present application, one end of the first extending plate away from the center plate is provided with a plurality of grooves, and one end of the second extending plate toward the first extending plate is provided with a plurality of protrusions matched with the grooves.

[0010] As a further scheme of the present application, the horizontal moving structure comprises a sliding groove arranged along the length direction of the connecting plate, and a sliding block is slidably installed in the sliding groove and connected to a second electric telescopic rod arranged on the connecting plate. The sliding block is further fixedly provided with a pressing plate capable of being matched with a first abutting wheel and a second abutting wheel arranged on the first extending plate and the second extending plate in sequence, so that the first extending plate and the second extending plate are coplanar with the center plate in sequence.

[0011] As a further scheme of the present application, a horizontal surface is formed on one side of the pressing plate toward the center plate, an inclined surface is arranged at one end of the horizontal surface toward the second abutting wheel, and the first abutting wheel and the second abutting wheel can move to the horizontal surface through the inclined surface.

[0012] As a further scheme of the present application, further comprising: A supporting plate is fixedly installed on the frame structure, and a plurality of through holes are arranged on the supporting plate. A lifting plate is parallel to the supporting plate and connected to the supporting plate through a fourth electric telescopic rod, a jacking shaft capable of penetrating through the through holes is arranged on the lifting plate, and a second ball is arranged at one end of the jacking shaft away from the lifting plate. A circumferential fixing assembly is arranged on the supporting plate and used for positioning the carton.

[0013] As a further scheme of the present application, the circumferential positioning assembly comprises a plurality of third electric telescopic rods arranged on the supporting plate, and a pushing plate connected to the third electric telescopic rods, and a plurality of first balls arranged on the pushing plate.

[0014] A detection method using the carton compression resistance detection device comprises the following steps. Step one: place the carton to be detected on the supporting plate, and then move the lifting plate upward, so that the second balls can lift the carton upward; Step two: control the circumferential fixing assembly to act and push the carton to realize positioning and fixing of the carton, and then move the lifting plate downward to make the carton adhere to the supporting plate; Step three: control the horizontal moving structure to act according to the size of the carton, so that the extension mechanism acts to match the size of the pressing surface; Step four: control the cylinder to act, so that the center plate and the extension mechanism act, and when the center plate and the extension mechanism abut against the carton, the pressure sensor detects the force of each area of the center plate, and the adjusting structure acts to make the force of the center plate uniform; Step five: the cylinder continues to move until the carton is damaged, and the compression resistance value of the corresponding carton is measured.

[0015] Compared with the prior art, the present application has the following advantages: Firstly, by controlling the first extension plate and the second extension plate to act, the center plate, the first extension plate and the second extension plate can form three different sizes of pressing surfaces to meet the detection requirements of different storage cartons, avoid long preparation time caused by replacing the pressing plate during batch detection of different models of cartons, and shorten the detection period to a certain extent. By arranging the supporting plate, the lifting plate, the second balls and the circumferential fixing assembly, on the one hand, the positioning effect of the carton can be achieved to ensure that the corresponding size of the pressing surface can completely cover the top plane of the carton, improve the detection accuracy, and on the other hand, the first balls and the second balls can effectively reduce the frictional resistance of the carton during movement, thereby avoiding deformation of the carton during positioning and further improving the accuracy of the carton compression resistance detection result. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure diagram of an embodiment of the paper box compression resistance detection device.

[0017] Figure 2 Structure diagram of an embodiment of the paper box compression resistance detection device after removing the frame structure.

[0018] Figure 3 Structure diagram of an embodiment of the paper box compression resistance detection device after removing the frame structure from another angle.

[0019] Figure 4 Structure diagram of an embodiment of the paper box compression resistance detection device adjustment structure.

[0020] Figure 5 Structure diagram of an embodiment of the paper box compression resistance detection device action end and center plate.

[0021] Figure 6 Structure diagram of an embodiment of the paper box compression resistance detection device first extension plate.

[0022] Figure 7 Side view of an embodiment of the paper box compression resistance detection device extension mechanism and horizontal movement structure.

[0023] Figure 8 Side view of an embodiment of the paper box compression resistance detection device center plate and first extension plate.

[0024] Figure 9 Structure diagram of an embodiment of the paper box compression resistance detection device center plate, first extension plate, and second extension plate bottom plane coplanar.

[0025] Figure 10 Structure diagram of an embodiment of the paper box compression resistance detection device support plate and circumferential fixing assembly.

[0026] Figure 11 Structure explosion diagram of an embodiment of the paper box compression resistance detection device support plate and lifting plate.

[0027] In the figure: 1, frame structure; 2, air cylinder; 201, action end; 202, ball head; 3, guide column; 4, center plate; 401, spherical connecting seat; 402, right angle abutting surface; 5, first extension plate; 501, groove; 502, stop surface; 6, second extension plate; 601, protrusion; 7, first electric telescopic rod; 8, pressure sensor; 9, connecting plate; 901, sliding groove; 10, connecting shaft; 11, first cylindrical spring; 12, first abutting wheel; 13, second cylindrical spring; 14, second abutting wheel; 15, second electric telescopic rod; 16, sliding block; 17, pressing plate; 1701, inclined surface; 1702, horizontal surface; 18, supporting plate; 1801, through hole; 19, third electric telescopic rod; 20, pushing plate; 2001, first ball; 21, lifting plate; 22, fourth electric telescopic rod; 23, jacking shaft; 2301, second ball. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] In addition, the elements in the present application are referred to as "fixed to" or "provided on" another element, which can be directly on another element or can have a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can have a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0030] Please refer to Figures 1-11 In the embodiments of the present application, a carton compression resistance detection device comprises a frame structure 1, an adjusting structure, an extension mechanism and a transverse movement structure.

[0031] The frame structure 1 is fixedly provided with an air cylinder 2, and the action end 201 of the air cylinder 2 is provided with a center plate 4. Specifically, the action end 201 is provided with a guide column 3 in sliding connection with the frame structure 1. The adjusting structure is connected to the center plate 4 and the action end 201, and the adjusting structure is provided with a pressure sensor 8. The pressure sensor 8 can detect the pressure difference borne by the four corners of the center plate 4. The adjusting structure comprises a ball head 202 arranged on the action end 201 and a spherical connecting seat 401 arranged on the center plate 4, and the ball head 202 is movable in the spherical connecting seat 401. The adjusting structure further comprises four groups of first electric telescopic rods 7 rotationally connected with four corners of the center plate 4 respectively, and the first electric telescopic rods 7 are provided with the pressure sensors 8 at one ends away from the center plate 4, and the pressure sensors 8 are rotationally connected with the action end 201.

[0032] In the embodiment, the top plane of the carton can be in a non-horizontal state due to production reasons (mainly caused by the size deviation of the carton itself), and if the center plate 4 is in a completely horizontal state and moves towards the carton in a completely horizontal state, the top plane of the carton will not be completely in abutment with the center plate 4 when they are in contact, and at this time, when pressure is applied to the carton, the carton will certainly be subjected to greater pressure in a local area, and the area will be subjected to small or even no force. According to the provisions of GB / T4857.4, the center plate must be parallel to the top surface of the carton during the entire test, and if the above-mentioned non-parallel state of the center plate 4 and the top plane of the carton exists, it will cause the local collapse of the carton, resulting in that the compression resistance value detected is less than the actual compression resistance value. In the present application, when the center plate 4 is in a non-parallel state with the top plane of the carton, the forces acting on the four corners of the center plate 4 will not be equal, and at this time, the values detected by the corresponding pressure sensors 8 will also not be consistent. In this state, the pressure sensors 8 will control the corresponding first electric telescopic rods 7 to act, so as to adjust the levelness of the center plate 4, so that the center plate 4 can be kept parallel to the top plane of the carton, thereby making the detection condition meet the requirements of the national standard and improving the detection precision of the compression resistance of the carton.

[0033] Please refer to Figures 2-3 , Figures 7-9 , the extension mechanism is connected with the center plate 4, and the extension mechanism comprises a first extension assembly and a second extension assembly; A plurality of connecting plates 9 are fixedly installed on the center plate 4; The first extension assembly comprises four groups of first extension plates 5 rotationally connected with four edges of the center plate 4, and the first extension plates 5 and the connecting plates 9 are connected through first cylindrical springs 11, wherein the side wall of the first extension plate 5 is provided with an inclined chamfer, which can ensure that the four groups of first extension plates 5 will not interfere with each other when they are deflected by a predetermined angle upward relative to the center plate; The center plate 4 is provided with a right-angle abutment surface 402, and the first extension plate 5 is provided with a stop surface 502 matched with the right-angle abutment surface 402; The second extension assembly includes a connecting shaft 10 slidably connected to the connecting plate 9 and a second extension plate 6 fixedly installed on the connecting shaft 10. A second cylindrical spring 13 is sleeved on the connecting shaft 10. One end of the second cylindrical spring 13 is connected to the connecting plate 9, and the other end is connected to the second extension plate 6. In the initial state, both the first cylindrical spring 11 and the second cylindrical spring 13 are in a slightly stretched state (to counteract the gravity of the first extension plate 5 and the second extension plate 6), and the first extension plate 5 is tilted upward relative to the center plate 4, while the second extension plate 6 is at a height of its bottom plane that is higher than the bottom plane of the center plate. At this time, when the carton of the corresponding size of the center plate 4 moves, only the center plate 4 will have a sticking and squeezing effect with the carton.

[0034] When inspecting larger cartons, the transverse structure will activate to sequentially drive the first extension plate 5 and the second extension plate 6. Specifically, when the first extension plate 5 activates, it will deflect relative to the center plate 4 until the bottom plane of the first extension plate 5 is coplanar with the bottom plane of the center plate 4, forming a pressure surface of the second specification. At this time, the stop surface 502 on the first extension plate 5 just abuts against the right-angle contact surface 402 on the center plate 4, making the accuracy higher when the two are coplanar. This ensures that when the two move down, they can evenly abut and adhere to the upper surface of the carton, thereby giving the upper surface of the carton uniform pressure.

[0035] When the second extension plate 6 is activated, it will move downwards directly relative to the connecting plate 9 until its bottom plane is coplanar with the bottom plane of the center plate 4, thus forming a pressure relief surface of the third specification.

[0036] Based on the above settings, firstly, by controlling the movement of the first extension plate 5 and the second extension plate 6, the center plate 4, the first extension plate 5, and the second extension plate 6 can form three different specifications of pressure surfaces to meet the testing requirements of different storage cartons. This avoids the long preparation time caused by the sliding pressure plate during the batch testing of different models of cartons, and shortens the testing cycle to a certain extent. Secondly, compared with a single large-sized pressure plate, this application is equivalent to dividing the large-sized pressure plate into three small-sized modules: the center plate 4, the first extension plate 5, and the second extension plate 6. The small-sized modules are less likely to cause stress concentration and slight changes during production, processing, handling, and storage, thereby achieving better overall flatness of the assembly of the three modules.

[0037] It should be noted that in this embodiment, the first extension plate 5 and the center plate 4 are in a hinged state, which makes the connection between the first extension plate 5 and the center plate 4 tighter and improves the stability and accuracy of their coplanar state to a certain extent. However, if the second extension plate 6 is directly hinged to the first extension plate 5, the total mass of the first extension plate 5 and the second extension plate 6 will increase. When the pressure plate is pressed by the center plate 4, the first extension plate 5 and the second extension plate 6 will shake unnecessarily due to greater inertia, which will cause abnormal wear and affect the accuracy of later use.

[0038] Please see Figures 6-9 The first extension plate 5 is provided with a plurality of grooves 501 at one end away from the center plate 4, and the second extension plate 6 is provided with a plurality of protrusions 601 at one end facing the first extension plate 5, wherein the protrusions 601 are adapted to the grooves 501. The transverse structure is mounted on the center plate 4. When the transverse structure moves, it can sequentially drive the first extension component and the second extension component to move so that the lower surfaces of the first extension component and the second extension component are coplanar with the lower surface of the center plate 4. The transverse structure includes a slide groove 901 arranged along the length of the connecting plate 9, a slider 16 slidably installed in the slide groove 901, and the slider 16 is connected to a second electric telescopic rod 15 arranged on the connecting plate 9; The slider 16 is also fixed with a pressure plate 17, which can cooperate with the first abutting wheel 12 and the second abutting wheel 14 arranged on the first extension plate 5 and the second extension plate 6 in sequence, so that the first extension plate 5 and the second extension plate 6 are coplanar with the center plate 4 in sequence. The pressure plate 17 has a horizontal surface 1702 on one side facing the center plate 4, and an inclined surface 1701 is provided on one end of the horizontal surface 1702 facing the second abutting wheel 14. The first abutting wheel 12 and the second abutting wheel 14 can move to the horizontal surface 1702 via the inclined surface 1701.

[0039] In the initial state, the bottom planes of the first extension plate 5 and the second extension plate 6 are not coplanar with the bottom plane of the center plate 4. At this time, under the action of the first columnar spring 11 and the second columnar spring 13, the first extension plate 5 and the second extension plate 6 can be in a stable state. When the second electric telescopic rod 15 is activated, it can drive the pressure plate 17 to move along the length direction of the slide groove 901. During the movement of the pressure plate 17, the inclined surface 1701 can first abut against the first abutting wheel 12, so that the first extension plate 5 can deflect relative to the center plate 4. When the first abutting wheel 12 switches from the inclined surface 1701 to the horizontal surface 1702, The bottom plane of the first extension plate 5 is coplanar with the bottom plane of the center plate 4. As the pressure plate 17 continues to move, the first abutting wheel 12 will continue to roll on the horizontal plane 1702, and the second abutting wheel 14 will abut against the inclined plane 1701. At this time, the second extension plate 6 will move downward until the second abutting wheel 14 moves to the horizontal plane 1702. The second extension plate 6 is coplanar with the bottom planes of the first extension plate 5 and the center plate 4. At this time, the protrusion 601 is in the state of abutting the upper surface of the groove 501, thus realizing the locking effect of the second extension plate 6 on the first extension plate 5, which improves the coplanar accuracy of the three to a certain extent.

[0040] Please see Figure 1 , Figures 9-10 The cardboard box compression resistance testing device further includes: The support plate 18 is fixedly installed on the frame structure 1, and the support plate 18 is provided with multiple sets of through holes 1801; The lifting plate 21 is parallel to the support plate 18 and connected to the support plate 18 via the fourth electric telescopic rod 22. The lifting plate 21 is provided with a lifting shaft 23 that can pass through the through hole 1801. A second ball bearing 2301 is provided at the end of the lifting shaft 23 away from the lifting plate 21. A circumferential fixing component is disposed on the support plate 18 for positioning the carton. The circumferential positioning component includes multiple sets of third electric telescopic rods 19 disposed on the support plate 18. A push plate 20 is connected to the third electric telescopic rods 19, and multiple sets of first ball bearings 2001 are disposed on the push plate 20.

[0041] In use, the carton is first placed on the support plate 18, and then the fourth electric telescopic rod 22 drives the lifting plate 21 to move upward so that the carton can be lifted upward under the action of the second ball 2301. At this time, the third electric telescopic rod 19 located around the carton can move to push the carton to position so that when the pressure surface of the corresponding size moves towards the carton, it can completely cover the top plane of the carton.

[0042] Specifically, the third electric telescopic rods 19 around the carton move in pairs. When two sets of the third electric telescopic rods 19 move (these two sets of the third electric telescopic rods 19 are located on both sides of two parallel surfaces of the carton), they can push the carton to move along the horizontal plane. At this time, since the bottom of the carton is in contact with the second ball bearing 2301, the rolling effect of the second ball bearing 2301 can reduce the deformation of the carton caused by the pusher plate 20. Subsequently, the other two sets of the third electric telescopic rods 19 move, causing the carton to move in a direction perpendicular to the first movement direction. At this time, the sides of the carton that are already in contact with the pusher plate 20 will move against the pusher plate 20. The pusher plate 20 is provided with the first ball bearing 2001, which makes the friction between the carton and the pusher plate 20 smaller when the carton moves, and further reduces the deformation of the carton due to the large frictional resistance during the positioning process.

[0043] After positioning is completed, the lifting plate 21 will move downward, and the support for the carton will switch from the second ball bearing 2301 to the support plate 18.

[0044] Based on the above settings, on the one hand, the carton can be positioned to ensure that the pressure surface of the corresponding specification can completely cover the top plane of the carton, thereby improving the detection accuracy. On the other hand, during the positioning process of the carton, the first ball 2001 and the second ball 2301 can effectively reduce the frictional resistance encountered by the carton during its movement, thereby preventing the carton from deforming during the positioning process and further improving the accuracy of the carton's compressive strength test results.

[0045] As an embodiment of the present invention, a testing method is also proposed, using the aforementioned cardboard box compression resistance testing device, comprising the following steps: Step 1: Place the carton to be tested on the support plate 18, then the lifting plate 21 moves up, and the second ball bearing 2301 can lift the carton upwards; Step 2: Control the movement of the circumferential fixing component to push the carton to achieve positioning and fixing of the carton. Then, the lifting plate 21 moves down to make the carton fit against the support plate 18. Step 3: Control the movement of the transverse structure according to the size of the carton, thereby causing the extension mechanism to move and making the pressure surface match the size of the carton; Step 4: Control the cylinder 2 to move the center plate 4 and the extension mechanism. When the center plate 4 and the extension mechanism come into contact with the carton, the pressure sensor 8 detects the force on each area of ​​the center plate 4 and controls the adjustment structure to move so that the center plate 4 is subjected to uniform force. Step 5: Cylinder 2 continues to move until the carton is damaged, and the compressive strength value of the corresponding carton is measured.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for testing the compression resistance of cardboard boxes, comprising: A frame structure, on which a cylinder is fixedly installed, and a center plate is provided on the actuating end of the cylinder; Its characteristic is that it further includes: The adjustment structure connects the center plate and the actuating end. A pressure sensor is provided on the adjustment structure, and the pressure sensor can detect the pressure difference borne by the four corner locks of the center plate. An extension mechanism is connected to the center plate, and the extension mechanism includes a first extension component and a second extension component; A transverse sliding structure is installed on the center plate. When the transverse sliding structure is activated, it can sequentially drive the first extension component and the second extension component to move so that the lower surfaces of the first extension component and the second extension component are coplanar with the lower surface of the center plate.

2. The cardboard box compression resistance testing device according to claim 1, characterized in that, The adjustment structure includes a ball head disposed on the actuating end and a spherical connecting seat disposed on the center plate, wherein the ball head is movable within the spherical connecting seat; The adjustment structure also includes four sets of first electric telescopic rods that are rotatably connected to the four corners of the center plate. The pressure sensor is provided at the end of the first electric telescopic rod away from the center plate, and the pressure sensor is rotatably connected to the actuating end.

3. The cardboard box compression resistance testing device according to claim 1, characterized in that, Multiple sets of connecting plates are fixedly installed on the central plate; The first extension assembly includes four sets of first extension plates rotatably connected to the four sides of the center plate, and the first extension plates are connected to the connecting plate by a first columnar spring; The center plate is provided with a right-angle abutment surface, and the first extension plate is provided with a stop surface adapted to the right-angle abutment surface.

4. The cardboard box compression resistance testing device according to claim 3, characterized in that, The second extension assembly includes a connecting shaft slidably connected to the connecting plate and a second extension plate fixedly mounted on the connecting shaft. A second cylindrical spring is sleeved on the connecting shaft, with one end of the second cylindrical spring connected to the connecting plate and the other end connected to the second extension plate.

5. The cardboard box compression resistance testing device according to claim 4, characterized in that, The first extension plate has multiple sets of grooves at the end away from the center plate, and the second extension plate has multiple sets of protrusions at the end facing the first extension plate, the protrusions being adapted to the grooves.

6. The cardboard box compression resistance testing device according to claim 4, characterized in that, The transverse structure includes a slide groove arranged along the length of the connecting plate, a slider slidably installed in the slide groove, and the slider being connected to a second electric telescopic rod arranged on the connecting plate; The slider is also fixed with a pressure plate, which can cooperate with the first abutting wheel and the second abutting wheel arranged on the first extension plate and the second extension plate in sequence, so that the first extension plate and the second extension plate are coplanar with the center plate in sequence.

7. The cardboard box compression resistance testing device according to claim 6, characterized in that, The pressure plate has a horizontal surface on one side facing the center plate, and an inclined surface is provided on one end of the horizontal surface facing the second abutting wheel. The first abutting wheel and the second abutting wheel can move to the horizontal surface via the inclined surface.

8. The cardboard box compression resistance testing device according to claim 1, characterized in that, Also includes: A support plate is fixedly installed on the frame structure, and the support plate is provided with multiple sets of through holes; A lifting plate is parallel to the support plate and connected to the support plate via a fourth electric telescopic rod. The lifting plate is provided with a lifting shaft that can pass through the through hole, and a second ball bearing is provided at the end of the lifting shaft away from the lifting plate. A circumferential fixing component, disposed on the support plate, is used to position the carton.

9. A cardboard box compression resistance testing device according to claim 8, characterized in that, The circumferential positioning component includes multiple sets of third electric telescopic rods disposed on the support plate, and a push plate is connected to the third electric telescopic rods. Multiple sets of first ball bearings are disposed on the push plate.

10. A detection method, characterized in that, Using the carton compression resistance testing device as described in any one of claims 1 to 9, the process includes the following steps: Step 1: Place the carton to be tested on the support plate, then the lifting plate moves up, and the second ball bearing can lift the carton upwards; Step 2: Control the movement of the circumferential fixing components to push the carton to achieve positioning and fixation of the carton. Then, the lifting plate moves down to make the carton fit against the support plate. Step 3: Control the movement of the transverse structure according to the size of the carton, thereby causing the extension mechanism to move and making the pressure surface match the size of the carton; Step 4: Control the cylinder to move the center plate and the extension mechanism. When the center plate and the extension mechanism come into contact with the carton, the pressure sensor detects the force on each area of ​​the center plate and controls the adjustment structure to make the center plate evenly stressed. Step 5: The cylinder continues to move until the carton is damaged, and the compression resistance value of the corresponding carton is measured.

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