A drop test device for carton inspection

Abstract

This utility model relates to the field of packaging testing equipment technology, and discloses a drop test device for carton testing, including a base and a controller fixedly installed on the base. A vertical frame is fixedly connected to the upper part of the base. The device also includes: a rectangular frame that is lifted and lowered on the vertical frame; a support plate is fixedly connected to the rectangular frame; at least two sets of uprights are detachably installed on the support plate; and limiting parts for supporting the carton are adjustable on the uprights. A weighing platform that swings on the rectangular frame for reading the weight of the carton is also included. This utility model, by setting a weighing platform with a placement plate on the rectangular frame, allows operators to simply place the carton on the placement plate. The weighing platform directly reads the weight and transmits the data to the controller, automatically calculating the required drop height. This achieves an integrated operation of "weighing-lifting-dropping" of the carton, avoiding the previous manual transfer of the carton after weighing, thus shortening the testing cycle and improving overall testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of packaging testing equipment technology, specifically a drop test device for carton testing. Background Technology

[0002] As the core packaging carrier for commodity circulation, cardboard boxes are crucial for ensuring the safety of goods transportation. During logistics transportation and warehousing, drop tests are conducted to simulate real-world scenarios such as loading and unloading errors and handling bumps. These tests assess the structural strength, cushioning capacity, and sealing reliability of cardboard boxes.

[0003] For drop testing of cardboard boxes, a standard cardboard box sample representing the batch is selected and pretreated to a stable state under specific temperature and humidity conditions. Then, according to predetermined test requirements, the drop height and sequence are set, typically covering three basic directions: corners, edges, and faces. During the test, the device lifts the cardboard box to the designated height and ensures it reaches the predetermined free-fall posture before releasing it instantly, allowing it to fall freely onto a hard, flat, horizontal impact surface. After each drop, the cardboard box structure is carefully inspected for signs of failure such as damage, cracks, or deformation, and the specific damage is recorded.

[0004] However, existing technologies have certain problems. Due to the differences in carton specifications, during testing, the cartons must be weighed before testing to accurately calculate the corresponding drop height according to relevant standards. However, in most tests, the weighing unit and the drop test bench are operated as independent devices, forcing operators to manually transfer the cartons to the drop area after weighing, which significantly affects the overall testing efficiency. On the other hand, since the cartons need to be tested for drop in different postures, the placement posture of the cartons needs to be adjusted during placement. However, most devices have poor fixation of the cartons, and accidental displacement or posture deviation can easily occur during lifting, positioning, or release, leading to inaccurate test data. Therefore, we urgently need a drop test device for carton testing to solve the above problems. Utility Model Content

[0005] This utility model provides a drop test device for carton inspection. By combining the weighing platform and the placement platform, it solves the problem in the background art where the two operate independently, requiring weighing before testing, thus improving testing efficiency. The setting of the limiting part solves the problem of poor carton fixation in the background art.

[0006] This utility model provides the following technical solution:

[0007] A drop test device for carton inspection includes a base and a controller fixedly mounted on the base. A stand is fixedly connected to the upper part of the base. The device also includes: a rectangular frame that is lifted and lowered on the stand, a support plate that is fixedly connected to the rectangular frame, and at least two sets of uprights that are detachably mounted on the support plate. Each upright has a limiting part that is adjustable to support the carton. A weighing platform that is oscillating on the rectangular frame for reading the weight of the carton is also included. A placement plate for placing the carton is fixedly mounted on the output end of the weighing platform.

[0008] As a preferred technical solution of this utility model, the limiting part includes a connecting plate fixedly installed on the support plate. The connecting plate has multiple sets of slots opened along the linear direction. The connecting plate is provided with a stop bar for blocking the carton. When the end of the stop bar is inserted into the corresponding slot, a blocking area is formed.

[0009] As a preferred technical solution of this utility model, the limiting part further includes at least two sets of self-locking sliders slidably connected to the upright, and a crossbar is inserted into the self-locking slider at the top. A clamping block for abutting against the side of the carton is slidably connected to the crossbar.

[0010] As a preferred technical solution of this utility model, a self-locking slider two is slidably connected to the crossbar, and a limiting rod for supporting the carton is detachably installed on the self-locking slider two.

[0011] As a preferred technical solution of this utility model, a rotating shaft is detachably installed on the self-locking slider at the bottom. A telescopic rod is rotatably connected inside the rotating shaft through a bearing, and the movable end of the telescopic rod is rotatably connected to a bonding plate that abuts against the surface of the carton.

[0012] As a preferred embodiment of this utility model, a drive motor is fixedly connected to the rectangular frame, and a gear that meshes with a rack on the upright is fixedly connected to the output end of the drive motor. When the drive motor is working, the rectangular frame moves up and down along the path of the upright.

[0013] As a preferred embodiment of this utility model, a hydraulic cylinder for driving the weighing platform to swing is movably mounted on the rectangular frame. The output end of the hydraulic cylinder is fixedly connected to a connecting rod for supporting the weighing platform, and the end of the connecting rod is rotatably connected to the rectangular frame. The weighing platform is fixedly mounted on the connecting rod.

[0014] Compared with the prior art, this utility model provides a drop test device for carton inspection, which has the following advantages:

[0015] 1. In this drop test device for carton testing, a weighing platform with a placement plate is set on a rectangular frame. During the test, the operator only needs to place the carton on the placement plate. The weighing platform directly reads the weight and transmits the data to the controller, which can automatically calculate the required drop height. This realizes the integrated operation of "weighing-lifting-dropping" of the carton, avoiding the previous situation of manually transferring the carton after weighing, thus shortening the test cycle and improving the overall test efficiency.

[0016] 2. In this drop test device for carton testing, the limiting parts can support cartons of different types and postures, thereby ensuring that the carton will not shift or deviate in posture during the test, thus ensuring the accuracy of the test data. The limiting parts at multiple positions can also provide multi-point protection for the carton, avoiding the situation caused by uneven local force.

[0017] All parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model combines the weighing platform and the placement platform, eliminating the step of manually transferring the carton after weighing, thereby improving work efficiency. In addition, with the setting of the limiting part, it can realize the stable fixation and precise adjustment of the carton in multiple postures, avoid posture deviation, solve the problem of inaccurate test data, further improve test efficiency, and ensure the accuracy of its data. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a top view of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of a partial structure of the present invention. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of a partial structure of the present invention. Figure 3 .

[0025] In the diagram: 1. Base; 2. Controller; 3. Stand; 4. Rectangular frame; 5. Support plate; 6. Upright pole; 7. Weighing platform; 8. Placement plate; 9. Connecting plate; 10. Slot; 11. Stop bar; 12. Self-locking slider one; 13. Crossbar; 14. Clamping block; 15. Self-locking slider two; 16. Limiting rod; 17. Rotating shaft; 18. Telescopic rod; 19. Adhesive plate; 20. Drive motor; 21. Gear; 22. Hydraulic cylinder; 23. Connecting rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] Reference Figure 1 - Figure 6 A drop test device for carton inspection includes a base 1 and a controller 2 fixedly installed on the base 1. A stand 3 is fixedly connected to the upper part of the base 1.

[0029] In this embodiment, the controller 2 serves as the "central command system" of the entire carton drop test device, integrating four core functions: data acquisition, logic operation, instruction output, and human-computer interaction. It undertakes the full-process management tasks of "weight data processing - drop height calculation - mechanism motion control - test process monitoring," replacing the decentralized operation mode of "manual weighing and recording, manual height adjustment, and manual control release" in traditional equipment, and realizing the automation, precision, and intelligence of the test process.

[0030] It is important to note that the data acquisition module has a built-in high-precision A / D converter, which connects directly to the pressure sensor on the weighing platform 7 via a data cable. This allows for real-time acquisition of carton weight data, ensuring the accuracy and stability of the data. The calculation and control module uses an STM32F4 series microcontroller as its core chip, which can automatically calculate the precise drop height based on the acquired weight data. For example, for a 5kg carton, the standard automatically calculated drop height is 1.2m. The drive control module includes a motor drive unit and a hydraulic drive unit. The motor drive unit controls the drive motor 20 via PWM signals. The rotation speed and number of rotations enable precise control of the lifting height of the rectangular frame 4. The hydraulic drive unit controls the extension and retraction of the hydraulic cylinder 22 and the depressurization speed through a solenoid valve, thereby adjusting the swing angle of the weighing platform 7 and enabling rapid release during the drop. The human-machine interface module is equipped with a 5-inch touch screen and a physical emergency stop button. The screen can display weight data, calculated drop height, current lifting height, swing angle and other parameters in real time, and supports operators to manually input custom drop height, posture angle and other commands. The emergency stop button can immediately cut off the drive power in case of equipment malfunction, ensuring the safety of the equipment and operators.

[0031] Furthermore, the controller 2 establishes a connection with external mechanisms through a waterproof plug. The input end is connected to the weighing platform 7 and the emergency stop button, and the output end is connected to the solenoid valve of the drive motor 20 and the hydraulic cylinder 22. The human-machine interface realizes information interaction between the operator and the equipment through a touch screen. All connection lines are made of wear-resistant and interference-resistant shielded wires to avoid instruction delays or data deviations caused by line interference during the test.

[0032] It also includes a rectangular frame 4 that is lifted and lowered on the upright 3. A drive motor 20 is fixedly connected to the rectangular frame 4. A gear 21 that meshes with the rack on the upright 3 is fixedly connected to the output end of the drive motor 20. When the drive motor 20 is working, the rectangular frame 4 moves up and down along the path of the upright 3. A support plate 5 is fixedly connected to the rectangular frame 4, and at least two sets of uprights 6 are detachably installed on the support plate 5.

[0033] Here, the support plate 5 also has multiple sets of limiting holes for adjusting the distance between the two sets of uprights 6, and the two sets of uprights 6 can be replaced.

[0034] In this embodiment, the meshing transmission between the drive motor 20 and the rack and gear 21 on the upright frame 3 has the advantages of high transmission accuracy and smooth operation. The controller 2 can accurately control the number of rotations of the drive motor 20 according to the weight data of the weighing platform 7, thereby controlling the lifting height of the rectangular frame 4 to ensure that the drop height is consistent with the calculated value, avoiding the error caused by traditional manual height adjustment, and improving the test accuracy. The upright 6 has scale lines engraved on its surface, which, together with the scale alignment design of the self-locking slider 12, can accurately match the limit position according to the height of the carton, avoiding fixation failure caused by inaccurate height adjustment.

[0035] The upright 6 is equipped with a limiting part for supporting the carton. The limiting part includes a connecting plate 9 fixedly installed on the support plate 5. Multiple slots 10 are opened on the connecting plate 9 along the linear direction. A stop bar 11 for blocking the carton is provided on the connecting plate 9. When the end of the stop bar 11 is inserted into the corresponding slot 10, a blocking area is formed.

[0036] Here, the multiple slots 10 of the connecting plate 9 can adjust the position of the stop bar 11 to form an adaptive blocking area for cartons of different widths, preventing the cartons from shifting laterally.

[0037] The limiting part also includes at least two sets of self-locking sliders 12 slidably connected to the upright 6. A crossbar 13 is inserted into the self-locking slider 12 at the top. A clamping block 14 for abutting against the side of the carton is slidably connected to the crossbar 13. A self-locking slider 2 15 is slidably connected to the crossbar 13, and a limiting rod 16 for supporting the carton is detachably installed on the self-locking slider 2 15.

[0038] Here, both self-locking slider 12 and self-locking slider 2 15 are equipped with tightening bolts. When moved to the corresponding position, rotating the tightening bolts will limit self-locking slider 12 to the upright rod 6. The abutment block 14 on the crossbar 13 has a triangular groove with an anti-slip pad inside, which can accurately abut the side of the carton and adapt to the lateral fixing requirements of cartons of different heights. The limiting rod 16 can slide along the crossbar 13 through self-locking slider 2 15, providing support from the top or side of the carton and adapting to different placement postures such as "vertical" and "horizontal". This improves the limiting of the carton and avoids accidental displacement or posture deviation during testing, ensuring the accuracy of test data.

[0039] A rotating shaft 17 is detachably installed on the self-locking slider 12 at the bottom. A telescopic rod 18 is rotatably connected to the rotating shaft 17 through a bearing, and the movable end of the telescopic rod 18 is rotatably connected to a bonding plate 19 that abuts against the surface of the carton.

[0040] Here, the pivot 17 on the bottom self-locking slider 12 cooperates with the telescopic rod 18, so that the bonding plate 19 can be adapted to the surface of the carton at multiple angles and lengths, achieving "surface contact" fixation, avoiding the problem of uneven local force or displacement caused by traditional "point fixation".

[0041] A weighing platform 7, which is oscillating on a rectangular frame 4, is used to read the weight of the carton. A hydraulic cylinder 22, which drives the weighing platform 7 to oscillate, is movably mounted on the rectangular frame 4. A connecting rod 23 for supporting the weighing platform 7 is fixedly connected to the output end of the hydraulic cylinder 22, and the end of the connecting rod 23 is rotatably connected to the rectangular frame 4. The weighing platform 7 is fixedly mounted on the connecting rod 23, and a placement plate 8 for placing the carton is fixedly mounted on the output end of the weighing platform 7.

[0042] In this embodiment, by setting a weighing platform 7 with a placement plate 8 on a rectangular frame 4, the integrated operation of weighing, lifting and dropping of the carton is realized. The operator only needs to place the carton on the placement plate 8, and the weighing platform 7 directly reads the weight and transmits the data to the controller 2. The controller 2 automatically calculates the drop height according to the standard, and then drives the rectangular frame 4 to lift and drop to the target height through the drive motor 20, thereby shortening the test cycle and improving the overall test efficiency. At the same time, the weighing platform 7 is integrated with the drop mechanism to avoid the initial deviation of the carton posture during the transfer process and ensure the accuracy of the data in subsequent tests.

[0043] Furthermore, by driving the connecting rod 23 through the hydraulic cylinder 22 to swing the weighing platform 7, the placement plate 8 can be separated from the bottom of the carton, thereby completing the drop test of the carton.

[0044] In this invention, the cardboard box to be tested is placed on the placement plate 8. The weighing platform 7 reads the weight of the cardboard box and transmits the data to the controller 2. The controller 2 automatically calculates the corresponding drop height. According to the cardboard box specifications and test posture requirements, the moving stop bar 11 is inserted into the corresponding slot 10 to form a side block on the cardboard box. The self-locking slider 12 is slid to the target height and locks itself. The position of the abutment block 14 on the crossbar 13 is adjusted so that its bottom abuts against the side of the cardboard box. The self-locking slider 2 15 is slid to move the limiting rod 16 to the side and support the placed cardboard box. The angle of the pivot shaft 17 and the length of the telescopic rod 18 make the bonding plate 19 fit tightly against the surface of the carton, thereby fixing the carton. At this time, the controller 2 controls the drive motor 20 to rotate, and the gear 21 drives the rectangular frame 4 to rise to the calculated drop height along the rack of the upright frame 3. The drive motor 20 stops and locks, and the controller 2 controls the hydraulic cylinder 22 to start. The weighing platform 7 swings around the connecting rod 23, and the carton falls through the screw hole at the bottom of the base 1 to the buffer pad, completing one drop test. Repeating the above operation can complete the drop test of cartons in different postures.

[0045] Components not described in detail in this article are existing technologies.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drop test device for carton inspection, comprising a base (1) and a controller (2) fixedly mounted on the base (1), wherein a stand (3) is fixedly connected to the upper part of the base (1), characterized in that, Also includes: A rectangular frame (4) is lifted and installed on the upright (3). A support plate (5) is fixedly connected to the rectangular frame (4), and at least two sets of uprights (6) are detachably installed on the support plate (5). The uprights (6) are adjusted and provided with a limiting part for supporting the carton. A weighing platform (7) for reading the weight of a carton is set on a rectangular frame (4), and a placement plate (8) for placing the carton is fixedly installed at the output end of the weighing platform (7).

2. The drop test device for carton inspection according to claim 1, characterized in that, The limiting part includes a connecting plate (9) fixedly installed on the support plate (5). Multiple sets of slots (10) are opened on the connecting plate (9) along the linear direction. A stop bar (11) for blocking the carton is provided on the connecting plate (9). When the end of the stop bar (11) is inserted into the corresponding slot (10), a blocking area is formed.

3. The drop test device for carton inspection according to claim 1, characterized in that, The limiting part also includes at least two sets of self-locking sliders (12) slidably connected to the upright (6), and a crossbar (13) is inserted into the self-locking slider (12) at the top, and a clamping block (14) for abutting against the side of the carton is slidably connected to the crossbar (13).

4. The drop test device for carton inspection according to claim 3, characterized in that, A self-locking slider two (15) is slidably connected to the crossbar (13), and a limiting rod (16) for supporting the carton is detachably installed on the self-locking slider two (15).

5. A drop test device for cardboard box inspection according to claim 3, characterized in that, A rotating shaft (17) is detached and installed on the self-locking slider (12) at the bottom. A telescopic rod (18) is rotatably connected inside the rotating shaft (17) via a bearing, and the movable end of the telescopic rod (18) is rotatably connected to a bonding plate (19) that abuts against the surface of the carton.

6. The drop test device for carton inspection according to claim 1, characterized in that, A drive motor (20) is fixedly connected to the rectangular frame (4). The output end of the drive motor (20) is fixedly connected to a gear (21) that meshes with the rack on the stand (3). When the drive motor (20) is working, the rectangular frame (4) moves up and down along the path of the stand (3).

7. A drop test device for cardboard box inspection according to claim 6, characterized in that, A hydraulic cylinder (22) for driving the weighing platform (7) to swing is movably mounted on the rectangular frame (4). The output end of the hydraulic cylinder (22) is fixedly connected to a connecting rod (23) for supporting the weighing platform (7), and the end of the connecting rod (23) is rotatably connected to the rectangular frame (4). The weighing platform (7) is fixedly mounted on the connecting rod (23).

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