Corrugated carton compression resistance detection device and method

Abstract

The invention belongs to the technical field of compression resistance detection, and particularly relates to a corrugated carton compression resistance detection device and method.The corrugated carton compression resistance detection device comprises a plane plate and a pressing plate, a hydraulic rod is connected to the top of the pressing plate, a plurality of sliding grooves are formed in the bottom of the pressing plate, the two sides of the sliding grooves are arranged in a penetrating mode, limiting grooves are formed in the tops of the sliding grooves, and sliding plates are slidably connected to the inner walls of the sliding grooves; the outer wall of the bottom of the sliding plate is flush with the bottom of the pressing plate, sliding blocks are installed on the two sides of the top of the sliding plate, and the sliding blocks slide in the limiting grooves in a limited mode. According to the invention, the small bending or damage condition of the carton is identified and detected in the compression resistance detection process, so that the accuracy of the compression resistance detection is improved, and the top surface of the carton can be ensured to be vertically pressed in a complete plane all the time in the continuous pressing process.

Description

Technical Field

[0001] The present invention relates to the technical field of compression resistance detection, and in particular to a device and method for detecting the compression resistance of a corrugated paper box. Background Art

[0002] Corrugated box compression performance testing equipment usually refers to a carton pressure testing machine, also known as a carton compression strength tester or a carton compression testing machine.

[0003] Referring to the Chinese patent with patent announcement number CN118243522B, a corrugated cardboard box compression resistance testing device and testing method are disclosed, wherein a corrugated cardboard box compression resistance testing device includes a base, a support frame arranged on the base, a transmission tooth one arranged on the support frame, and a chain arranged on the transmission tooth one, and also includes a pressure testing unit arranged on the support frame, and a power unit arranged in the base, and the power unit and the chain are connected.

[0004] In the prior art, sampling and testing of corrugated boxes generally only involves pressing down the top of the box with a pressure plate until the box is damaged. However, since the degree of damage to the box is difficult to determine, it is often only discovered when a significant degree of damage occurs, which results in inaccurate actual test results. Summary of the invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes a corrugated box compression resistance detection device and method.

[0006] The present invention proposes a corrugated cardboard box compression resistance detection device, which includes a flat plate and a pressure plate. The top of the pressure plate is connected to a hydraulic rod. A plurality of slide grooves are provided at the bottom of the pressure plate. The two sides of the slide grooves are penetrated. A limiting groove is provided at the top of the slide groove. The inner wall of the slide groove is slidably connected to a sliding plate. The bottom outer wall of the sliding plate is flush with the bottom of the pressure plate. Slide blocks are installed on both sides of the top of the sliding plate. The slide blocks slide within the limiting grooves.

[0007] Furthermore, extension shafts are fixed at both ends of the slider, and the outer wall of the extension shaft is rotatably connected to an extension sleeve, which is in rolling contact with the inner wall of the limit groove; a magnetic suction plate is installed in the middle position of the top of the sliding plate, and an electromagnetic block is fixed in the middle position of the top inner wall of the limit groove.

[0008] Furthermore, a turntable is provided at each of the four corners of the plane plate, the top outer wall of the turntable is flush with the top outer wall of the plane plate, an air pipe is installed on the turntable, the top of the air pipe is flush with the top of the turntable, and the bottom of the air pipe is connected to an air pump.

[0009] Furthermore, the turntable is provided with a turntable and a turntable ring, the turntable ring is installed at the bottom end of the turntable, the turntable ring extends downward to below the bottom outer wall of the plane plate, the outer diameter of the turntable ring is smaller than the outer diameter of the turntable, and a gear ring is installed at the bottom of the outer wall of the turntable.

[0010] Furthermore, an electric push rod is installed at the bottom of the flat plate, one end of the electric push rod is connected to a driving frame, the driving frame and the position corresponding to the turntable are set as a rack, the rack is set parallel to the extension direction of the electric push rod, and the rack is meshed with the gear ring.

[0011] Furthermore, a connecting groove is opened at a position corresponding to the air pipe on the outside of the pressure plate, and a side strip extending vertically downward is slidingly connected to the connecting groove. A horizontal strip is arranged at the bottom of the outside of the side strip, and a vertical through groove is opened in the middle of the horizontal strip, and an air pressure intensity sensor is installed in the vertical through groove.

[0012] Furthermore, a pressure sensor is connected between the hydraulic rod and the pressure plate, and the pressure sensor is used to monitor the extrusion force between the hydraulic rod and the pressure plate in real time; a distance sensor is installed on the side of the limit groove, and the distance sensor is used to monitor the distance between the distance sensor and the corresponding slider.

[0013] A method for testing the compression resistance of a corrugated paper box, according to the above-mentioned device for testing the compression resistance of a corrugated paper box, comprises the following steps: Step 1: Before placing the carton, turn the air pipes at the four corners to the inside; Step 2: When placing the carton, make sure that the bottom of the carton covers the air pipes at the four corners. After placing the carton, slide the side strips corresponding to the positions of the air pipes into the connection grooves to make the side strips fit the surface of the carton. Step 3: Inhale by lowering the top of the trachea; Step 4: The pressing plate is lowered to fit the top surface of the carton, the air suction operation of the air pipe is stopped and the air pressure in the air pipe is restored to normal, and the air pipe is rotated to the outside of the carton; Step 5: The pressure plate continues to press down to test the compression resistance. When the carton is partially broken and bent, the top surface of the carton will tilt, and the reverse force of the tilt will make the corresponding sliding plate slide horizontally; the top of the air pipe blows upward; The pressure sensor is used to monitor the extrusion force between the hydraulic rod and the pressure plate in real time. The distance sensor is used to monitor the distance between the distance sensor and the corresponding slider. The air pressure intensity sensor is used to monitor the air flow intensity generated by blowing air through the air pipe at the corresponding position in real time. The monitoring values ​​are uploaded to the central processor, and the evaluation coefficient is calculated after comprehensive analysis.

[0014] Furthermore, the calculation logic of the evaluation coefficient is as follows: Step 1: The real-time monitoring data of the pressure sensor is recorded as P; the real-time monitoring data of the distance sensor is recorded as D; the real-time monitoring data of the air pressure intensity sensor is recorded as A; Step 2: Calculation formula of evaluation coefficient E: , In the formula, , and is the weight coefficient, and The weight can be determined by multiple experiments to analyze the correlation between each sensor data and the actual damage of the carton; It is the estimated maximum pressure value measured when the carton is completely damaged. is the maximum distance value that the distance sensor will measure when the sliding plate is offset to the limit position. It is the maximum air pressure intensity value measured by the air pressure intensity sensor when the carton is not damaged; Step 3: Analyze the evaluation coefficient E and the reference coefficient: If E is greater than the reference coefficient, it indicates that the carton is damaged; If E is less than the reference coefficient, the carton is still within the normal usage range.

[0015] The beneficial effects of the present invention are: 1. In the present invention, when the top surface of the carton is inclined and the pressure plate is continuously pressed downward, the sliding plate will slide toward one side due to the reverse force of the inclination of the top surface of the carton, thereby being able to identify and detect minor bends or damages of the carton during the compression test, thereby improving the accuracy of the compression test, and being able to ensure that the top surface of the carton is always pressed vertically in a complete plane during the continuous downward pressure.

[0016] 2. In the present invention, by setting up the bottom turntable and the air pipe, the air pipe is used to maintain the stability of the carton placement and the flatness of the bottom before the pressure plate contacts the carton, and the turntable is used to keep the bottom flat during the extrusion detection process, thereby improving the accuracy of the compression resistance detection during the overall use process.

[0017] 3. In the present invention, a comprehensive analysis is performed by monitoring the squeezing force of the hydraulic rod position, the sliding plate offset distance, and the air pressure changes caused by the side strip offset, thereby improving the effectiveness and accuracy of detecting changes in the degree of damage to the carton. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a corrugated box compression resistance detection device proposed in Example 1 of the present invention; Figure 2 A schematic diagram of the pressure plate structure of a corrugated paper box compression resistance detection device proposed by the present invention; Figure 3 A schematic diagram of the internal structure of a limit groove of a corrugated box compression detection device proposed in Example 1 of the present invention; Figure 4This is a schematic diagram of the structure of the slideway and the limit groove of a corrugated paper box compression resistance detection device proposed by the present invention; Figure 5 A schematic diagram of the structure of a sliding plate of a corrugated paper box compression testing device proposed by the present invention; Figure 6 A schematic diagram of the structure of a turntable in use state of a corrugated paper box compression resistance detection device proposed by the present invention; Figure 7 A schematic diagram of the structure of the turntable in the second use state of a corrugated paper box compression resistance detection device proposed by the present invention; Figure 8 A schematic diagram of the structure of a driving frame of a corrugated paper box compression testing device proposed by the present invention; Fig. 9 A schematic diagram of the turntable structure of a corrugated paper box compression resistance detection device proposed by the present invention; Fig.10 This is a schematic diagram of the overall structure of a corrugated box compression resistance detection device proposed in Example 2 of the present invention; Fig.11 A corrugated paper box compression testing device proposed by the present invention Fig.10 The enlarged structural diagram of part A in the middle; Fig.12 A schematic diagram of the structure of the connection slot position of a corrugated paper box compression resistance detection device proposed by the present invention; Fig.13 This is a schematic diagram of the internal structure of a limit groove of a corrugated box compression resistance detection device proposed in Example 2 of the present invention.

[0019] In the figure: 1 flat plate, 2 carton, 3 support frame, 4 hydraulic rod, 5 pressure plate, 501 slide slot, 502 limit slot, 503 connecting slot, 6 sliding plate, 7 slider, 701 extension shaft, 702 extension sleeve, 8 magnetic sheet, 9 electromagnetic block, 10 base, 11 turntable, 111 turntable, 112 swivel, 12 air pipe, 13 gear ring, 14 drive frame, 15 electric push rod, 16 stabilizing frame, 17 side strip, 171 connecting block, 172 horizontal strip, 18 air pressure intensity sensor, 19 distance sensor. DETAILED DESCRIPTION

[0020] Example 1: Reference Figure 1-9A corrugated paper box compression detection device includes a plane plate 1 and a pressure plate 5. A carton 2 is placed on the plane plate 1. A hydraulic rod 4 is connected to the top of the pressure plate 5. A support frame 3 is installed between the hydraulic rod 4 and the plane plate 1. A plurality of slide grooves 501 are provided at the bottom of the pressure plate 5. The two sides of the slide grooves 501 are penetrated and arranged. The plurality of slide grooves 501 are arranged in parallel. A limiting groove 502 is provided at the top of the slide groove 501. The width of the limiting groove 502 is greater than the width of the slide groove 501. A sliding plate 6 is slidably connected to the inner wall of the slide groove 501. The bottom of the sliding plate 6 The outer wall of the top is flush with the bottom of the pressing plate 5, and sliders 7 are installed on both sides of the top of the sliding plate 6. The sliders 7 slide within the limiting groove 502. It should be noted that: before the compression test, the sliding plate 6 is placed in the middle position of the slide groove 501, that is, the two sides of the sliding plate 6 are flush with the two sides of the pressing plate 5, and the cross-section of the pressing plate 5 is much larger than the cross-section of the carton 2; and in the process of placing the carton 2 on the flat plate 1 and then lowering the pressing plate 5 by the hydraulic rod 4 for compression testing, since the cross-section of the pressing plate 5 is much larger than the cross-section of the carton 2, it can ensure the compression The bottom surface of the plate 5 can completely cover the top surface of the carton 2 for the compression detection operation, and during the detection process: on the one hand, the sliding plate 6 can slide horizontally, and when the carton 2 is squeezed and bends and deformations that cannot be quickly found appear in other positions, the top surface of the carton 2 will tilt due to the deformation of other places. When the top surface of the carton 2 tilts and the pressure plate 5 continues to press down, the sliding plate 6 will slide to one side due to the reverse force of the tilt of the top surface of the carton 2, thereby being able to detect smaller bends or On the other hand, the damage can be identified and detected, thereby improving the accuracy of the compression resistance test; on the other hand, the sliding plate 6 can only slide in the horizontal direction through the limited sliding setting of the sliding plate 6, and the width of the pressing plate 5 and the sliding plate 6 is much larger than the carton 2. Even if the sliding plate 6 slides a short distance, it can ensure the coverage of the top surface of the carton 2. Therefore, in the process of continuous downward pressure, it can ensure that the top surface of the carton 2 is always pressed vertically in a complete plane until the carton 2 is damaged, thereby further improving the accuracy and effectiveness of the compression resistance test of the carton 2.

[0021] In the present invention, both ends of the slider 7 are fixed with an extension shaft 701, and the outer wall of the extension shaft 701 is rotatably connected with an extension sleeve 702, and the extension sleeve 702 is in rolling contact with the inner wall of the limiting groove 502, so that the slider 7 is limited by the extension shaft 701 and the extension sleeve 702 extending horizontally toward both ends, so that the sliding plate 6 and the slider 7 can only move horizontally along the extension direction of the slide groove 501, so as to ensure the flatness of downward extrusion, and the extension sleeve 702 connected by rolling is used to reduce the friction of the sliding plate 6 and the slider 7 when moving horizontally, so as to ensure the sliding effect of the sliding plate 6 applying reverse force after the top surface of the carton 2 is tilted; A magnetic sheet 8 is installed at the middle position of the top of the sliding plate 6 between the two sliding blocks 7, and an embedding groove is opened in the middle position of the top inner wall of the limiting groove 502, and an electromagnetic block 9 is fixed to the inner wall of the embedding groove. When the pressing plate 5 is lifted, the pressing plate 5 and the pressing plate 5 are lowered from the top to just touching the top surface of the carton 2. The electromagnetic block 9 is energized and magnetically adsorbed to the magnetic sheet 8, so that the sliding plate 6 is kept in the middle position of the slide groove 501, and the two sides of the sliding plate 6 are just aligned with the two sides of the pressing plate 5, so as to facilitate observation during the compression test. At the same time, the electromagnetic blocks 9 are used to limit the sliders 7 on both sides to prevent the sliding plate 6 from sliding out from the side during normal placement, so as to ensure the effectiveness of the long-term use of the equipment.

[0022] In the present invention, a turntable 11 is provided at each of the four corners of the plane board 1, the top outer wall of the turntable 11 is flush with the top outer wall of the plane board 1, an air pipe 12 is installed on the turntable 11, the top of the air pipe 12 is flush with the top of the turntable 11, and the bottom of the air pipe 12 is connected to an air pump, and a plurality of bases 10 are installed on the outer side of the plane board 1, and the plane board 1 is horizontally arranged by the plurality of bases 10; it should be noted that: the positions of the turntable 11 and the air pipe 12 correspond to the size of the carton 2, and different plane boards 1 and corresponding turntables 11 can be pre-selected for cartons 2 of different sizes; In the process of placing carton 2, if Figure 7 The second usage state shown is: the air pipe 12 on the turntable 11 is rotated to a position close to the center of the flat plate 1; when the carton 2 is placed, the four corners of the carton 2 just block the top ends of the air pipes 12 on the four turntables 11; When the pressing plate 5 gradually descends from the top to near the top surface of the carton 2: the air pump causes the air pipe 12 to suck air downward, so that suction is generated between the top of the air pipe 12 and the bottom of the carton 2, and the carton 2 is stabilized by the suction at the four corners below the carton 2 until the pressing plate 5 contacts the top surface of the carton 2, and the suction at the four corners keeps the bottom of the carton 2 flat before being pressed; Then before the pressing plate 5 continues to press down, Figure 6 The first usage state shown is: the turntable 11 rotates to rotate the air pipe 12 out of the carton 2; the other positions of the turntable 11 are used to be flush with the top of the flat plate 1 to ensure that the bottom surface of the carton 2 is in flat contact during the process of the pressure plate 5 squeezing the top surface of the carton 2; thereby improving the accuracy of the compression resistance detection during the overall use process.

[0023] In the present invention, the turntable 11 is provided with a turntable 111 and a turntable 112. The turntable 112 is installed at the bottom end of the turntable 111. The turntable 112 extends downward to the bottom of the outer wall of the bottom of the plane plate 1. The outer diameter of the turntable 112 is smaller than the outer diameter of the turntable 111. It should be noted that: the plane plate 1 and the turntable 11 are provided with turntable grooves and turntable holes distributed from top to bottom at corresponding positions. The turntable hole is located below the turntable groove. The inner diameter of the turntable groove is larger than the inner diameter of the turntable hole. The outer wall of the turntable 111 is in sliding contact with the inner wall of the turntable groove, and the outer wall of the turntable 112 is in sliding contact with the inner wall of the turntable hole. A gear ring 13 is installed at the bottom of the outer wall of the turntable 11. It should be noted that: the gear ring 13 is installed on the outer wall of the turntable 112, and the gear ring 13 is located below the outer wall of the bottom of the plane plate 1.

[0024] In the present invention, an electric push rod 15 is installed at the bottom of the flat plate 1, and one end of the electric push rod 15 is connected to a driving frame 14. The position corresponding to the driving frame 14 and the turntable 11 is set as a rack, and the rack is set in parallel with the extension direction of the electric push rod 15, and the rack is meshed with the gear ring 13. It should be noted that: both ends of the bottom of the flat plate 1 are installed with a stabilizing frame 16, and the bottom outer wall of the driving frame 14 is in sliding contact with the stabilizing frame 16. In the process of the electric push rod 15 reciprocating the driving frame 14, the stabilizing frame 16 is used to improve the stability of the driving frame 14; thereby, the electric push rod 15 drives the driving frame 14 to reciprocate horizontally, and the rack on the driving frame 14 is meshed with the gear ring 13 outside the turntable 11 to drive the turntable 11 to reciprocate, thereby realizing the movement and replacement of the position of the air pipe 12 on the turntable 11.

[0025] A method for testing the compression resistance of a corrugated paper box, according to the above-mentioned device for testing the compression resistance of a corrugated paper box, comprises the following steps: Step 1: Before placing the carton, turn the air pipes 12 at the four corners to the inside; Step 2: When placing the carton, make sure that the bottom of the carton covers the air pipes 12 at the four corners; Step 3: Make the top of the air pipe 12 suck air downwards to make the carton stable and make the bottom of the carton flat by sucking air at the four corners; Step 4: The pressing plate 5 is lowered to fit the top surface of the carton, the air suction operation of the air pipe 12 is stopped and the air pressure in the air pipe 12 is restored to normal, and the air pipe 12 is rotated to the outside of the carton; Step 5: The pressing plate 5 is continuously pressed down to perform compression resistance test. When the carton is partially broken or bent, the top surface of the carton will tilt, and the reverse force of the tilt will cause the corresponding sliding plate 6 to slide horizontally, so that the possible small local cracks and bends can be observed and monitored through the sliding of the sliding plate 6.

[0026] Example 2: Reference Figure 2 and Figure 4-Figure 13, a corrugated paper box compression resistance detection device, based on Example 1, a connecting groove 503 is opened at the position corresponding to the air pipe 12 on the outer side of the pressing plate 5, and a side strip 17 extending vertically downward is limitedly slidably connected in the connecting groove 503. It should be noted that: the bottom of the connecting groove 503 is penetrated, and the bottom end of the connecting groove 503 is a shrinking structure, and the top of the side strip 17 is connected to a connecting block 171 with a spherical structure, and the connecting block 171 is limitedly slid in the connecting groove 503; a horizontal strip 172 is arranged at the bottom of the outer side of the side strip 17, and a vertical through groove is opened in the middle of the horizontal strip 172, and an air pressure intensity sensor 18 is installed in the vertical through groove. When the pressing plate 5 is lowered to fit the top surface of the carton 2, the side strip 17 is close to the top surface of the carton 2 in the horizontal direction. It is close to the carton 2 and will not cause squeezing force on the outside of the carton 2, thereby avoiding excessive force affecting the accuracy of detection, and the horizontal strip 172 and the air pressure intensity sensor 18 are just above the air pipe 12 rotated to the outside. During the detection process, the air pipe 12 slightly blows air upward through the air pump, so that the air pressure intensity sensor 18 can detect the value, and the blowing is blocked by the side strip 17 and the horizontal strip 172 without causing excessive force on the edge position of the carton 2. When a slight bend that is not easy to detect occurs at the corner of the carton 2, the side strip 17 will slide horizontally due to the contact with the bending of the carton 2, thereby causing the air pressure intensity sensor 18 below to deviate from the vertical upward blowing, thereby reducing the detection value, thereby improving the accuracy of anti-pressure detection.

[0027] In the present invention, a pressure sensor is connected between the hydraulic rod 4 and the pressure plate 5, and the pressure sensor is used to monitor the extrusion force between the hydraulic rod 4 and the pressure plate 5 in real time, so as to monitor the compressive strength under various conditions during the extrusion process; a distance sensor 19 is installed on the side of the limit groove 502, and the distance sensor 19 is used to monitor the distance between the distance sensor 19 and the corresponding slider 7, so as to monitor and identify in real time through the distance sensor 19 when the sliding plate 6 is offset.

[0028] A method for testing the compression resistance of a corrugated paper box, according to the above-mentioned device for testing the compression resistance of a corrugated paper box, comprises the following steps: Step 1: Before placing the carton, turn the air pipes 12 at the four corners to the inside; Step 2: When placing the carton, make sure that the bottom of the carton covers the air pipes 12 at the four corners; after placing the carton, slide the side strips 17 corresponding to the positions of the air pipes 12 into the connecting grooves 503 so that the side strips 17 fit the surface of the carton; Step 3: Make the top of the air pipe 12 suck air downwards to make the carton stable and make the bottom of the carton flat by sucking air at the four corners; Step 4: The pressing plate 5 is lowered to fit the top surface of the carton, the air suction operation of the air pipe 12 is stopped and the air pressure in the air pipe 12 is restored to normal, and the air pipe 12 is rotated to the outside of the carton; Step 5: The pressing plate 5 is continuously pressed down to perform compression resistance test. When the carton is partially broken or bent, the top surface of the carton will tilt, and the reverse force of the tilt will make the corresponding sliding plate 6 slide horizontally, so that the possible local small rupture and bending can be observed and monitored through the sliding of the sliding plate 6, and the top of the air pipe 12 blows air upward; The pressure sensor is used to monitor the extrusion force between the hydraulic rod 4 and the pressure plate 5 in real time, the distance sensor 19 is used to monitor the distance between the distance sensor 19 and the corresponding slider 7, and the air pressure intensity sensor 18 is used to monitor the air flow intensity generated by blowing air through the air pipe 12 at the corresponding position in real time. The monitoring values ​​are uploaded to the central processor, and the evaluation coefficient is calculated after comprehensive analysis, and the evaluation coefficient is compared with the reference coefficient. If the evaluation coefficient is greater than the reference coefficient, it means that the carton is damaged in this state. If the evaluation coefficient is less than the reference coefficient, it means that the carton is still within the normal use range in this state. Therefore, by monitoring the extrusion force of the hydraulic rod 4 position, monitoring the offset distance of the sliding plate 6 and the air pressure changes caused by the offset of the side strip 17, a comprehensive analysis is performed, thereby improving the effectiveness and accuracy of detecting changes in the degree of damage of the carton.

[0029] In the present invention, the calculation logic of the evaluation coefficient is: Step 1: The real-time monitoring data of the pressure sensor is recorded as P; the real-time monitoring data of the distance sensor 19 is recorded as D; the real-time monitoring data of the air pressure intensity sensor 18 is recorded as A; Step 2: Calculation formula of evaluation coefficient E: , In the formula, , and is the weight coefficient, and The weight can be determined by multiple experiments to analyze the correlation between each sensor data and the actual damage of the carton; It is the estimated maximum pressure value measured when the carton is completely damaged, which can be set through multiple historical records. Indicates the ratio of current pressure to maximum pressure, used to measure the contribution of pressure to carton damage; In order to predict the maximum distance value measured by the distance sensor when the sliding plate is offset to the limit position, it can be pre-determined through multiple historical records. Indicates the ratio of the current sliding plate offset distance to the maximum offset distance, reflecting the impact of the sliding plate offset on the judgment of carton damage; is the maximum air pressure intensity value measured by the air pressure intensity sensor when the carton is not damaged. Indicates the change ratio of the current air pressure intensity relative to the normal state, reflecting the effect of air pressure change on carton damage detection; Step 3: Analyze the evaluation coefficient E and the reference coefficient: If E is greater than the reference coefficient, it indicates that the carton is damaged; If E is less than the reference coefficient, the carton is still within the normal usage range.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A corrugated paper box compression resistance testing device, comprising a flat plate (1) and a pressure plate (5), wherein the top of the pressure plate (5) is connected to a hydraulic rod (4), characterized in that: The bottom of the pressing plate (5) is provided with a plurality of slide grooves (501), both sides of the slide grooves (501) are penetrated, and the top of the slide grooves (501) is provided with limit grooves (502), the inner wall of the slide grooves (501) is slidably connected with a sliding plate (6), the bottom outer wall of the sliding plate (6) is flush with the bottom of the pressing plate (5), and sliding blocks (7) are installed on both sides of the top of the sliding plate (6), and the sliding blocks (7) slide in the limit grooves (502).

2. A corrugated box compression testing device according to claim 1, characterized in that: An extension shaft (701) is fixed at both ends of the slider (7), an extension sleeve (702) is rotatably connected to the outer wall of the extension shaft (701), and the extension sleeve (702) is in rolling contact with the inner wall of the limiting groove (502); A magnetic attraction sheet (8) is installed at the middle position of the top of the sliding plate (6), and an electromagnetic block (9) is fixed at the middle position of the top inner wall of the limiting groove (502).

3. A corrugated box compression testing device according to claim 1, characterized in that: A turntable (11) is provided at each of the four corners of the flat plate (1), the top outer wall of the turntable (11) being flush with the top outer wall of the flat plate (1), an air pipe (12) being installed on the turntable (11), the top end of the air pipe (12) being flush with the top of the turntable (11), and the bottom end of the air pipe (12) being connected to an air pump.

4. A corrugated box compression testing device according to claim 3, characterized in that: The rotating disk (11) is provided with a rotating plate (111) and a rotating ring (112). The rotating ring (112) is mounted on the bottom end of the rotating plate (111). The rotating ring (112) extends downward to below the bottom outer wall of the plane plate (1). The outer diameter of the rotating ring (112) is smaller than the outer diameter of the rotating plate (111). A gear ring (13) is mounted on the bottom of the outer wall of the rotating disk (11).

5. A corrugated box compression testing device according to claim 4, characterized in that: An electric push rod (15) is installed at the bottom of the flat plate (1), one end of the electric push rod (15) is connected to a driving frame (14), a rack is arranged at a position corresponding to the driving frame (14) and the turntable (11), the rack is arranged parallel to the extension direction of the electric push rod (15), and the rack is meshed with the gear ring (13).

6. A corrugated box compression testing device according to claim 3, characterized in that: A connection groove (503) is provided at a position on the outside of the pressure plate (5) corresponding to the air pipe (12), a side strip (17) extending vertically downward is slidably connected to the connection groove (503), a horizontal strip (172) is provided at the bottom of the outside of the side strip (17), a vertical through groove is provided at the middle of the horizontal strip (172), and an air pressure intensity sensor (18) is installed in the vertical through groove.

7. A corrugated box compression testing device according to claim 6, characterized in that: A pressure sensor is connected between the hydraulic rod (4) and the pressing plate (5), and the pressure sensor is used to monitor the squeezing force between the hydraulic rod (4) and the pressing plate (5) in real time; A distance sensor (19) is installed on the side of the limiting groove (502), and the distance sensor (19) is used to monitor the distance between the distance sensor (19) and the corresponding slider (7).

8. A method for testing the compression resistance of a corrugated paper box, according to the device for testing the compression resistance of a corrugated paper box according to claim 7, characterized in that: The following steps are involved: Step 1: Before placing the carton, turn the air pipes (12) at the four corners to the inside; Step 2: When placing the carton, make sure that the bottom of the carton covers the air pipes (12) at the four corners; Step 3, inhale by moving the top of the trachea (12) downward; Step 4: the pressing plate (5) is lowered until it is in contact with the top surface of the carton, the air suction operation of the air pipe (12) is stopped and the air pressure in the air pipe (12) is restored to normal, and the air pipe (12) is rotated to the outside of the carton; Step 5: The pressure plate (5) is continuously pressed downward to perform a compression resistance test. When the carton is partially broken or bent, the top surface of the carton will tilt, and the reverse force of the tilt will cause the corresponding sliding plate (6) to slide horizontally.

9. A method for testing the compression resistance of a corrugated paper box according to claim 8, characterized in that: In step 2, after placing the carton, the side strips (17) corresponding to the positions of the respective air pipes (12) are slid into the connection grooves (503) so that the side strips (17) are in contact with the surface of the carton; In step 5, air is blown upward from the top of the trachea (12); In step five, the pressure sensor is used to monitor the squeezing force between the hydraulic rod (4) and the pressure plate (5) in real time, the distance sensor (19) is used to monitor the distance between the distance sensor (19) and the corresponding slider (7), and the air pressure intensity sensor (18) is used to monitor the air flow intensity generated by blowing air through the air pipe (12) at the corresponding position in real time. Each monitoring value is uploaded to the central processing unit, and the evaluation coefficient is calculated through comprehensive analysis, and the evaluation coefficient is compared with the reference coefficient.

10. A method for testing the compression resistance of a corrugated paper box according to claim 9, characterized in that: Evaluation coefficient calculation logic: Step 1: The real-time monitoring data of the pressure sensor is recorded as P; the real-time monitoring data of the distance sensor (19) is recorded as D; the real-time monitoring data of the air pressure intensity sensor (18) is recorded as A; Step 2: Calculation formula of evaluation coefficient E: ， In the formula, , and is the weight coefficient, and The weight can be determined by multiple experiments to analyze the correlation between each sensor data and the actual damage of the carton; It is the estimated maximum pressure value measured when the carton is completely damaged; It is the maximum distance value measured by the estimated distance sensor when the sliding plate deflects to the limit position; It is the maximum air pressure intensity value measured by the air pressure intensity sensor when the carton is not damaged; Step 3: Analyze the evaluation coefficient E and the reference coefficient: If E is greater than the reference coefficient, it indicates that the carton is damaged; If E is less than the reference coefficient, the carton is still within the normal usage range.

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