A compression testing device for corrugated cardboard boxes

Abstract

This utility model relates to the field of corrugated cardboard packaging box technology, specifically to a compression testing device for corrugated cardboard packaging boxes. The device includes a frame and a pressure detector. An adjustment mechanism is provided on one side of the frame, and a connecting mechanism is provided inside the frame. The connecting mechanism includes a connecting plate and a limiting block. The connecting plate is installed inside the frame, and the limiting block is slidably connected to the inner wall surface of the connecting plate. The pressure detector is fixedly installed on one side of the frame. Through the quick-release structure of the connecting plate and the punching head in the connecting mechanism, punching heads of different areas and shapes can be quickly replaced without complex operations, solving the problem of difficult punching head replacement in traditional equipment. It is adaptable to packaging boxes of different sizes and with different compression testing requirements. The overall structure, through adjustable lifting and limiting design and quick-release punching heads, achieves adaptability to corrugated cardboard packaging boxes of different testing specifications, improving the equipment's versatility and testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of corrugated paper packaging box technology, and in particular to a compression resistance testing device for corrugated paper packaging boxes. Background Technology

[0002] In the production quality control of corrugated cardboard boxes, compression resistance testing is the core step in determining whether they meet the requirements for transportation, stacking, and storage protection. Currently, most corrugated cardboard box compression resistance testing equipment on the market does not typically have stable limiting devices on both sides of the box. When the stamping structure applies downward pressure, the box is prone to lateral displacement or even tipping over due to uneven force, leading to test interruption. This not only makes it impossible to obtain continuous and accurate compression resistance data but also prolongs the time required for a single test, affecting the efficiency of batch testing.

[0003] For example, a pressure testing device for corrugated cardboard boxes, patent publication number "CN220154109U", uses a limiting block installed on the lower part of the inner wall of the testing frame. The upper end of the limiting block is hinged to a pressure plate. Protrusions are set on the convex plates on both sides of the pressure plate, and recesses are opened at the corresponding positions of the limiting blocks. Before testing, the packaging box is placed between the two limiting blocks, and the pressure plate is rotated downward to make the protrusions embed into the recesses. The mechanical engagement between the protrusions and the recesses fixes both sides of the packaging box, effectively preventing the packaging box from shifting during the testing process, ensuring the continuity of data acquisition by the pressure detector, and improving data accuracy and testing efficiency to a certain extent.

[0004] However, in the aforementioned patent, the stamping structure and stamping column are fixedly connected. When it is necessary to test packaging boxes of different sizes and with different pressure resistance requirements, and to match stamping heads of different areas and shapes to ensure uniform pressure application, replacing the stamping head requires disassembling multiple fixed parts. The operation steps are cumbersome, and during the replacement process, the stamping head may not make a smooth contact with the packaging box due to installation deviation, which will affect the accuracy of the test data. Utility Model Content

[0005] The purpose of this utility model is to provide a compression testing device for corrugated cardboard boxes, which solves the problem in the above-mentioned patent where the stamping structure and stamping column are fixedly connected. When it is necessary to test boxes of different sizes and compression resistance levels, and to match stamping heads of different areas and shapes to ensure uniform pressure application, it is necessary to disassemble multiple fixed parts to replace the stamping head. The operation steps are cumbersome, and during the replacement process, the stamping head is prone to uneven contact with the box due to installation deviation, which affects the accuracy of the test data.

[0006] To achieve the above objectives, this utility model provides a compression testing device for corrugated cardboard packaging boxes, including a frame and a pressure detector. An adjustment mechanism is provided on one side of the frame, and a connecting mechanism is provided inside the frame. The connecting mechanism includes a connecting plate and a limiting block. The connecting plate is installed inside the frame, and the limiting block is slidably connected to the inner wall surface of the connecting plate. The pressure detector is fixedly installed on one side of the frame.

[0007] The frame is fixedly connected to a mounting box on one side, and threaded rods are rotatably connected to both ends of the inner wall of the mounting box. A motor is fixedly connected to the upper surface of the mounting box, and the output shaft of the motor is fixedly connected to the threaded rods.

[0008] The threaded rod has a slider slidably connected to its surface, and a groove is provided on one side of the inner wall of the frame. A connecting block is slidably connected to the inner wall surface of the groove.

[0009] The connecting block is fixedly connected to one side of a mounting plate, the mounting plate is fixedly connected to one side of the slider, and a bearing plate is fixedly connected to the bottom of the inner wall of the frame.

[0010] The mounting plate has a connecting rod fixedly connected to its lower surface, and a fixing plate is fixedly connected to one end of the connecting rod. The connecting plate is slidably connected to the inner wall surface of the fixing plate.

[0011] A telescopic rod is fixedly connected to one side of the inner wall of the connecting plate, and the other end of the telescopic rod is fixedly connected to one side of the limiting block. A spring is fixedly connected to one side of the limiting block, and the other end of the spring is fixedly connected to one side of the inner wall of the connecting plate. A punching head is fixedly connected to the lower surface of the connecting plate.

[0012] The fixed plate is fixedly connected to a connecting box on one side, and a bidirectional electric push rod is fixedly connected to one side of the inner wall of the connecting box. A push block is fixedly connected to one end of the bidirectional electric push rod.

[0013] This utility model discloses a compression testing device for corrugated cardboard boxes. An adjustment mechanism is installed on one side of the frame. A motor drives a threaded rod to rotate, causing the slider and connecting block to synchronously raise and lower the mounting plate, fixing plate, and connecting mechanism. The initial position of the punch head can be adjusted according to the height of the packaging box, adapting to the testing needs of different height specifications. In the connecting mechanism, the connecting plate and the punch head adopt a quick-release structure, allowing for rapid replacement of punch heads of different areas and shapes without complicated operations. This solves the problem of difficult punch head replacement in traditional equipment, adapting to packaging boxes of different sizes and with different compression testing requirements. Simultaneously, a bidirectional electric push rod pushes the connecting plate to slide and adjust the spacing of the limit blocks. Combined with the elastic clamping of the telescopic rod and spring, this not only stably fixes packaging boxes of different widths but also avoids damage to the packaging boxes. The overall structure, through adjustable lifting and limiting design and quick-release punch head, achieves adaptability to corrugated cardboard packaging boxes of different testing specifications, improving the equipment's versatility and testing efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the main appearance of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the frame structure of an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram of the adjustment mechanism according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the connection mechanism according to an embodiment of the present utility model.

[0019] Figure 5 This is a structural schematic diagram of the fixing plate and its connection according to an embodiment of the present utility model.

[0020] Figure 6 This is a schematic diagram of the connection box according to an embodiment of the present utility model.

[0021] 1. Frame; 2. Adjustment mechanism; 201. Mounting box; 202. Threaded rod; 203. Motor; 204. Slider; 205. Slide; 206. Connecting block; 207. Bearing plate; 208. Mounting plate; 3. Connecting mechanism; 301. Connecting rod; 302. Fixing plate; 303. Connecting plate; 304. Telescopic rod; 305. Limiting block; 306. Punching head; 307. Connecting box; 308. Bidirectional electric push rod; 309. Push block; 310. Spring; 4. Pressure detector. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] Please see Figures 1-6 A pressure testing device for corrugated cardboard boxes includes a frame 1 and a pressure detector 4. An adjustment mechanism 2 is provided on one side of the frame 1, and a connecting mechanism 3 is provided inside the frame 1. The connecting mechanism 3 includes a connecting plate 303 and a limiting block 305. The connecting plate 303 is installed inside the frame 1, and the limiting block 305 is slidably connected to the inner wall surface of the connecting plate 303. The pressure detector 4 is fixedly installed on one side of the frame 1.

[0024] Furthermore, a mounting box 201 is fixedly connected to one side of the frame 1. Threaded rods 202 are rotatably connected to both ends of the inner wall of the mounting box 201. A motor 203 is fixedly connected to the upper surface of the mounting box 201. The output shaft of the motor 203 is fixedly connected to the threaded rods 202. After the motor 203 is powered on and started, its output shaft will drive the threaded rods 202 to rotate synchronously at the rotatable connection points at both ends of the inner wall of the mounting box 201. The mounting box 201 provides a stable installation and protection space for the threaded rods 202 and the motor 203, avoiding interference from external impurities in the operation of the components. It can effectively protect the threaded rods 202 and the motor 203, reduce the wear and tear on the components caused by the external environment, and extend the service life of the equipment.

[0025] Furthermore, a slider 204 is slidably connected to the surface of the threaded rod 202, and a groove 205 is provided on one side of the inner wall of the frame 1. A connecting block 206 is slidably connected to the inner wall surface of the groove 205. When the threaded rod 202 rotates, the external thread on its surface meshes with the internal thread on the inner wall of the slider 204, causing the slider 204 to slide along the axial direction of the threaded rod 202. At the same time, the connecting block 206, restricted by the inner wall of the groove 205, can only slide in the vertical direction of the groove 205, forming a linkage with the slider 204. The threaded engagement between the slider 204 and the threaded rod 202 achieves precise power transmission, while the sliding engagement between the connecting block 206 and the groove 205 restricts the direction of movement. The two work together to ensure the stability of the subsequent connection structure movement and avoid deviation, thus ensuring the accuracy of stamping inspection.

[0026] Furthermore, a mounting plate 208 is fixedly connected to one side of the connecting block 206, and the other side of the mounting plate 208 is fixedly connected to one side of the slider 204. A bearing plate 207 is fixedly connected to the bottom of the inner wall of the frame 1. When the slider 204 slides, it drives the mounting plate 208 to move synchronously through the fixed connection with the mounting plate 208. The fixed connection between the connecting block 206 and the mounting plate 208 further enhances the movement stability of the mounting plate 208. The bearing plate 207 serves as a support structure for placing the corrugated cardboard packaging box to be tested. The bidirectional fixed connection of the mounting plate 208 ensures that it can stably transmit movement and avoid deformation due to uneven force. The bearing plate 207 provides a flat and stable support surface for the packaging box, preventing the packaging box from affecting the test results due to unstable support, and reducing wear on the bottom of the packaging box.

[0027] Furthermore, a connecting rod 301 is fixedly connected to the lower surface of the mounting plate 208, and a fixing plate 302 is fixedly connected to one end of the connecting rod 301. The connecting plate 303 is slidably connected to the inner wall surface of the fixing plate 302. When the mounting plate 208 moves, the power is transmitted to the fixing plate 302 through the connecting rod 301, causing the fixing plate 302 to move synchronously. Under the restriction and guidance of the inner wall of the fixing plate 302, the connecting plate 303 can slide horizontally along the fixing plate 302 to adjust its own position. The connecting rod 301 plays the role of connection and force transmission, ensuring that the mounting plate 208 and the fixing plate 302 move synchronously. The sliding design of the connecting plate 303 provides the possibility for subsequent adjustment of the position of the limit block 305, enabling the equipment to adapt to packaging boxes of different specifications and improving the versatility of the equipment.

[0028] Furthermore, a telescopic rod 304 is fixedly connected to one side of the inner wall of the connecting plate 303, and the other end of the telescopic rod 304 is fixedly connected to one side of the limiting block 305. A spring 310 is fixedly connected to one side of the limiting block 305, and the other end of the spring 310 is fixedly connected to one side of the inner wall of the connecting plate 303. A punching head 306 is fixedly connected to the lower surface of the connecting plate 303. When the limiting block 305 contacts the packaging box, the reaction force generated by the packaging box on the limiting block 305 will push the limiting block 305 towards the inner wall of the connecting plate 303. At this time, the telescopic rod 304 retracts, and the spring 310 is compressed. The elastic force of the spring 310 will act in the opposite direction on the limiting block 305. The punching head 306, driven by the connecting plate 303, applies pressure to the packaging box for pressure resistance testing. As a direct pressure-applying component, the fixed connection method of the punching head 306 ensures stable pressure transmission and improves the accuracy of the test data.

[0029] Furthermore, a connecting box 307 is fixedly connected to one side of the fixed plate 302, and a bidirectional electric push rod 308 is fixedly connected to one side of the inner wall of the connecting box 307. A push block 309 is fixedly connected to one end of the bidirectional electric push rod 308. When the bidirectional electric push rod 308 is energized, it can extend and retract in the horizontal direction, driving the push block 309 to move synchronously. The push block 309 contacts the connecting plate 303, thereby pushing the connecting plate 303 to slide on the inner wall of the fixed plate 302 so as to facilitate the removal and replacement of the connecting plate 303 from the stamping head 306. The connecting box 307 provides installation and protection space for the bidirectional electric push rod 308.

[0030] The complete working process is as follows: First, the bidirectional electric push rod 308 inside the connecting box 307 on one side of the fixed plate 302 is activated. After being energized, the bidirectional electric push rod 308 extends horizontally, and its output end drives the push block 309 to move synchronously towards the connecting plate 303. After the push block 309 contacts the limiting block 305, a horizontal pushing force is continuously applied, pushing the limiting block 305 towards the inner wall of the connecting plate 303. At this time, the telescopic rod 304 fixedly connected to one side of the inner wall of the connecting plate 303 contracts axially due to the compression of the limiting block 305. Simultaneously, the spring 310 fixedly connected to one side of the limiting block 305 is compressed and stores elastic potential energy. This continues until the limiting block 305 is completely retracted into the inner wall of the connecting plate 303, releasing the limiting effect of the limiting block 305 on the connection plate 303 and the fixed plate 302. After the limit block 305 has fully retracted, the operator can manually pull the connecting plate 303 vertically downwards. Since the connecting plate 303 and the fixed plate 302 are slidably connected, and there is no obstruction from the limit block 305, the connecting plate 303 can smoothly disengage from the sliding track on the inner wall of the fixed plate 302, simultaneously removing the old punch head 306 fixedly connected to its lower surface from the device, thus completing the disassembly of the old component. Based on the specifications of the corrugated cardboard packaging box to be inspected, select a new punch head 306 of suitable size and shape. After ensuring that the connecting surface between the new punch head 306 and the lower surface of the connecting plate 303 is clean and free of impurities, align the connecting plate 303 with the sliding track on the inner wall of the fixed plate 302 and push it upwards along the track. During the pushing process of the connecting plate 303, its two side edges will contact the guide structure of the inner wall of the fixed plate 302 and squeeze the limiting block 305. After being squeezed, the limiting block 305 will drive the telescopic rod 304 to retract and the spring 310 to compress, making room for the movement of the connecting plate 303. The connecting plate 303 will continue to be pushed until the positioning mark on the connecting plate 303 is aligned with the scale line on the fixed plate 302. At this time, the limiting block 305 on the inner wall of the connecting plate 303 is exactly aligned with the preset limiting groove on the inner wall of the fixed plate 302. The spring 310 releases the stored elastic potential energy and pushes the limiting block 305 to extend axially along the telescopic rod 304 until the limiting block 305 is embedded in the limiting groove on the inner wall of the fixed plate 302, thus completing the limiting and fixing of the connecting plate 303 and the new stamping head 306. This limiting structure can effectively prevent the connecting plate 303 from shifting during the detection process and ensure the stability of pressure transmission. Place the corrugated cardboard box to be tested stably on the support plate 207 at the bottom of the inner wall of the frame 1.The motor 203 on the mounting box 201 is started, which drives the threaded rod 202 to rotate. The threaded rod 202 drives the slider 204 to slide. The slider 204 and the connecting block 206 together drive the mounting plate 208 to move downward. The mounting plate 208 drives the fixing plate 302, the connecting plate 303 and the punching head 306 to move downward synchronously through the connecting rod 301 until the punching head 306 approaches the upper surface of the packaging box. The motor 203 is then turned off, the pressure detection system is started, and the motor 203 is started again. The motor 203 is controlled to drive the threaded rod 202 to rotate slowly at a set speed, so that the punching head 306 continuously applies pressure to the upper surface of the packaging box. The pressure detector 4 collects the punching pressure data in real time and transmits the data to the display terminal, so that the staff can observe the data changes and the status of the packaging box in real time.

[0031] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this application are still within the scope of this application. It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compression testing device for corrugated cardboard boxes, comprising a frame and a pressure detector, characterized in that: An adjustment mechanism is provided on one side of the frame, and a connecting mechanism is provided inside the frame. The connecting mechanism includes a connecting plate and a limiting block. The connecting plate is installed inside the frame, and the limiting block is slidably connected to the inner wall surface of the connecting plate. The pressure detector is fixedly installed on one side of the frame.

2. The compression testing device for corrugated cardboard boxes according to claim 1, characterized in that: A mounting box is fixedly connected to one side of the frame. Threaded rods are rotatably connected to both ends of the inner wall of the mounting box. A motor is fixedly connected to the upper surface of the mounting box, and the output shaft of the motor is fixedly connected to the threaded rods.

3. The compression testing device for corrugated cardboard boxes according to claim 2, characterized in that: The threaded rod is slidably connected to a slider, and a groove is provided on one side of the inner wall of the frame, with a connecting block slidably connected to the inner wall surface of the groove.

4. The compression testing device for corrugated cardboard boxes according to claim 3, characterized in that: A mounting plate is fixedly connected to one side of the connecting block, and the mounting plate is fixedly connected to one side of the slider on the other side. A bearing plate is fixedly connected to the bottom of the inner wall of the frame.

5. The compression testing device for corrugated cardboard boxes according to claim 4, characterized in that: A connecting rod is fixedly connected to the lower surface of the mounting plate, and a fixing plate is fixedly connected to one end of the connecting rod. The connecting plate is slidably connected to the inner wall surface of the fixing plate.

6. The compression testing device for corrugated cardboard boxes according to claim 1, characterized in that: A telescopic rod is fixedly connected to one side of the inner wall of the connecting plate, and the other end of the telescopic rod is fixedly connected to one side of the limiting block. A spring is fixedly connected to one side of the limiting block, and the other end of the spring is fixedly connected to one side of the inner wall of the connecting plate. A punching head is fixedly connected to the lower surface of the connecting plate.

7. The compression testing device for corrugated cardboard boxes according to claim 5, characterized in that: A connecting box is fixedly connected to one side of the fixed plate, and a bidirectional electric push rod is fixedly connected to one side of the inner wall of the connecting box. A push block is fixedly connected to one end of the bidirectional electric push rod.

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