A paperboard processing device with strength testing function

Abstract

This invention relates to the field of paperboard strength testing technology, and in particular to a paperboard processing device with strength testing function. The device includes a testing platform, a support plate fixed to the top of the testing platform, and two paperboard clamps for holding the paperboard above the support plate. A curvature adjustment mechanism for driving the paperboard clamps to rotate up and down is provided between the support plate and the two paperboard clamps. Furthermore, two torsion adjustment mechanisms for driving the paperboard clamps to swing are also provided outside the paperboard clamps. This invention, through the curvature and torsion adjustment mechanisms, allows for the application of compression bending loads and horizontal torsional loads sequentially to the paperboard within the clamps after a single clamping and fixing of the paperboard on the same device. This not only reduces testing procedures and labor costs but also reduces positioning deviations, increases the accuracy of test results, and significantly improves testing efficiency, meeting the batch and rapid testing needs of the comprehensive mechanical properties of paperboard in large-scale production.

Description

Technical Field

[0001] This invention relates to the field of paperboard strength testing technology, and in particular to a paperboard processing apparatus with strength testing function. Background Technology

[0002] Paperboard is one of the most widely used basic materials in the packaging industry. It is usually made from raw materials containing plant fibers through multiple processes such as pulping, conditioning, papermaking, and post-processing. It has the characteristics of being lightweight, flexible, and highly malleable. It is widely used in product packaging and protection in food, daily chemicals, electronics, logistics and transportation, warehousing and storage, etc. It is closely related to production, daily life and industrial circulation. In the production and processing of paperboard, it is necessary to use special processing equipment with strength testing function to test and verify the mechanical properties of paperboard, so as to control the quality stability of finished paperboard and ensure that it meets the application performance requirements of various downstream packaging scenarios.

[0003] Most existing paperboard strength testing and processing devices focus on bending strength testing, which can test the bending resistance of paperboard under compression. However, in actual packaging applications and logistics storage and transportation processes, the stress conditions of paperboard are very complex. In addition to bearing vertical compression and bending loads, it is also frequently subjected to horizontal torsional loads due to factors such as stacking offset, loading and unloading misalignment, and transportation bumps and swaying. When it is necessary to test the torsional performance of paperboard, it is usually necessary to replace it with special testing equipment or to perform secondary clamping and positioning of the paperboard sample. This not only increases the testing process and labor costs, but also easily introduces positioning deviations due to multiple clamping, affecting the accuracy of the test results. At the same time, it significantly reduces the testing efficiency and makes it difficult to meet the batch and rapid testing needs of the comprehensive mechanical properties of paperboard in large-scale production. Therefore, there is an urgent need for a paperboard processing device with strength testing function. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a paperboard processing device with strength detection function.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A cardboard processing device with strength testing function includes a testing table, a support plate fixed on the top of the testing table, two cardboard clamps for clamping cardboard above the support plate, a bending adjustment mechanism for driving the cardboard clamps to rotate up and down between the support plate and the two cardboard clamps, and two torsion adjustment mechanisms for driving the cardboard clamps to swing outside the cardboard clamps. The curvature adjustment mechanism drives the cardboard clamp to rotate in the vertical direction, so as to adjust the curvature direction of the cardboard during the application of extrusion pressure, thereby realizing the strength measurement of the cardboard under extrusion. The curvature adjustment mechanism includes two movable frames movably connected to the top of the support plate. Two electric hydraulic rods are fixed to the top of the two movable frames. Two support frames are fixed to the telescopic ends of the two electric hydraulic rods. Two pitch adjustment mechanisms that drive the cardboard clamps to rotate up and down are provided between the two support frames and the two cardboard clamps. The torsion adjustment mechanism drives the cardboard clamp to rotate in the horizontal direction to apply a horizontal torsional load to the cardboard, thereby realizing the strength measurement of the cardboard under torsion. The torsion adjustment mechanism includes a fixed base fixed to the bottom of the support frame, an outer frame provided at the end of the fixed base away from the support frame, and a rotary mechanism that drives the cardboard clamp to rotate horizontally is provided inside the outer frame.

[0006] As a preferred embodiment of the present invention, the pitch adjustment mechanism includes a rotating block rotatably installed inside the support frame, and the middle part of the rotating shaft is fixedly connected to the rotating block. The support frame is U-shaped, and the rotating block is rotatably connected to the inside of the support frame. The two ends of the rotating shaft pass through the support frame and extend to the outside of the support frame.

[0007] As a preferred embodiment of the present invention, the outer wall of the rotating shaft is further fitted with a collar, the bottom of the collar is fixed with an adjusting rod, the side of the support frame is further provided with an insertion hole adapted to the adjusting rod, the outer wall of the support frame is further fixed with a limiting block, and the inside of the collar is further provided with a limiting groove adapted to the limiting block. The collar is located outside the rotating block, and the end of the adjusting rod away from the collar is inserted into the insertion hole; Pull the adjusting rod to move it outside the support frame. The collar moves axially along the outer wall of the limiting block with the adjusting rod. Rotate the adjusting rod to make the collar rotate around the axis of the rotating shaft. The collar drives the rotating shaft to rotate synchronously through the limiting block. The rotating shaft drives the rotating block to rotate, and then the rotating block drives the cardboard clamp to rotate in the vertical direction.

[0008] As a preferred embodiment of the present invention, the rotary mechanism includes an output rod rotatably installed inside the outer frame, a guide rod fixed to the outer wall of the output rod, a column fixed to the top of the guide rod, and a transmission disc rotatably connected to the end of the column away from the guide rod. A mounting base is fixed to the side of the rotating block. An extension rod is also fixed between the mounting base and the cardboard clamp. A plug shaft is movably connected to the middle of the extension rod. A force plate is provided below the plug shaft. A sliding groove for the transmission disc to move up and down is opened on the side of the force plate near the output rod. When the output rod rotates, it drives the guide rod to rotate around the axis of the output rod. The guide rod drives the transmission disc to revolve around the axis of the output rod, causing the transmission disc to move along the inside of the groove of the force plate. Through the cooperation between the groove and the transmission disc, the force plate is driven to produce displacement. The force plate drives the mounting base to rotate around its own axis through the insert shaft. The mounting base drives the cardboard clamp to rotate around the axis of the mounting base through the extension rod.

[0009] As a preferred technical solution of the present invention, a drive motor is also fixed at the bottom of the outer frame, a transmission rod is fixed to the output shaft of the drive motor, a stop bar is provided on the side of the transmission rod, a connecting sleeve is fixed to the top of the stop bar, and a swing rod is rotatably connected to the outside of the output rod. The connecting sleeve has a through hole in the middle that matches the output rod. The connecting sleeve is fitted onto the outer wall of the swing rod. Both ends of the swing rod are fixed with wear-resistant sleeves. The middle of the wear-resistant sleeve has an installation hole that matches the output rod. The wear-resistant sleeve is fixedly connected to the output rod.

[0010] As a preferred embodiment of the present invention, a main expansion block is fixed to the top of the transmission rod, a secondary expansion block is sleeved on the outer wall of the stop rod, and a locking rod is inserted between the main expansion block and the secondary expansion block. Both the main expansion block and the secondary expansion block are provided with expansion rods on opposite sides, and the middle of each expansion rod has several locking holes that are compatible with the locking rod. Pull the locking lever to move it outside the main expansion block and the auxiliary expansion block; push the stop lever to move it, and the stop lever will drive the connecting sleeve to move along the outer wall of the swing rod to adjust the distance between the stop lever and the transmission rod; after the locking hole of the main expansion block extension rod and the locking hole of the auxiliary expansion block extension rod are aligned, insert the locking lever back into the corresponding locking hole to achieve relative fixation of the main expansion block and the auxiliary expansion block.

[0011] As a preferred technical solution of the present invention, a wedge block is fixed on the top of the force plate, a pull plate is provided above the wedge block, a wedge groove adapted to the wedge block is opened at the bottom of the pull plate, and mounting holes adapted to the insert shaft are opened at both ends of the pull plate. A load-bearing plate is also fixed to the end of the fixed base away from the support frame. A groove is provided in the middle of the load-bearing plate, and a protrusion that matches the groove is provided on the top of the inner wall of the outer frame.

[0012] As a preferred embodiment of the present invention, a servo motor is also fixed to the side of the support plate, and a bidirectional threaded rod is fixed to the output shaft of the servo motor. Two movable plates are also fixed to the bottom of the two movable frames, and threaded holes adapted to the bidirectional threaded rod are opened in the middle of the two movable plates.

[0013] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. This invention, through the curvature adjustment mechanism and the torsion adjustment mechanism, can apply compression bending load and horizontal torsion load to the cardboard in the cardboard clamp after clamping and fixing it once on the same equipment. This not only reduces the inspection process and labor costs, but also reduces positioning deviation, increases the accuracy of inspection results, and greatly improves inspection efficiency, meeting the batch and rapid inspection needs of the comprehensive mechanical properties of cardboard in large-scale production. 2. This invention uses the linkage of an electric hydraulic rod, a support frame, a rotating block, a rotating shaft, a collar, and an adjusting rod to drive the rotating block to rotate the cardboard clamp in the vertical direction, thereby freely adjusting the bending direction of the cardboard before compression, which can more realistically simulate the different bending conditions of cardboard in logistics. 3. Through the cooperation of structures such as a moving frame, an electric hydraulic rod, a support frame, a rotating block, a rotating shaft, and a collar, this invention can adjust the bending direction of the cardboard before bending test, adapting to bending strength testing scenarios under different industry standards and testing requirements, thus broadening the applicability of the device. 4. After the main expansion block and the secondary expansion block are unlocked by the locking rod, the stop bar is moved to change its eccentricity relative to the transmission rod, thereby adjusting the swing amplitude of the output rod and ultimately changing the range of the torsion angle of the cardboard. This enhances the flexibility of the torsion test and adapts to the testing needs of cardboard of different strength grades. 5. This invention uses a servo motor to drive a bidirectional threaded rod to rotate, which in turn moves two cardboard clamps laterally synchronously via a moving plate and a moving frame, automatically adjusting the clamping distance. This allows the device to be compatible with cardboard of different sizes and specifications, meeting diverse batch inspection needs. 6. This invention automates the loading process by using an electro-hydraulic rod and cardboard clamps to apply pressure, while a drive motor provides rotational power, in conjunction with various transmission components. This significantly improves testing efficiency and meets the requirements for batch and rapid testing of the comprehensive mechanical properties of cardboard in large-scale production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the cardboard clip of the present invention; Figure 3 This is a schematic diagram of the structure of the movable frame of the present invention; Figure 4 This is a schematic diagram of the support frame of the present invention; Figure 5 This is a schematic diagram of the structure of the rotating shaft of the present invention; Figure 6 This is a schematic diagram of the structure of the mounting base of the present invention; Figure 7 This is a schematic diagram of the outer frame of the present invention; Figure 8This is a schematic diagram of the structure of the load-bearing plate of the present invention; Figure 9 This is a schematic diagram of the output rod of the present invention; Figure 10 This is a schematic diagram of the stop bar structure of the present invention; Figure 11 This is a schematic diagram of the structure of the column of the present invention; Figure 12 This is a schematic diagram of the load-bearing plate of the present invention.

[0015] The components include: 1. Inspection table; 2. Support plate; 3. Cardboard clamp; 4. Curvature adjustment mechanism; 401. Servo motor; 402. Bidirectional threaded rod; 403. Moving plate; 404. Moving frame; 405. Electro-hydraulic rod; 406. Support frame; 407. Rotating block; 408. Rotating shaft; 409. Collar; 410. Adjusting rod; 5. Torque adjustment mechanism; 501. Mounting base; 502. Extension rod; 503. Fixed base; 504. Load-bearing plate; 505. Outer frame; 506. Drive motor; 507. Transmission rod; 508. Stop bar; 509. Connecting sleeve; 510. Swing rod; 511. Output rod; 512. Main expansion block; 513. Secondary expansion block; 514. Locking rod; 515. Wear-resistant sleeve; 516. Guide rod; 517. Force plate; 518. Wedge block; 519. Pull plate; 520. Insert shaft; 521. Column; 522. Transmission disc. Detailed Implementation

[0016] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0017] Example: The present invention provides, as follows Figure 1 The device shown is a cardboard processing device with strength testing function, including a testing table 1, a support plate 2 fixed on the top of the testing table 1, and two cardboard clamps 3 for clamping the cardboard above the support plate 2. The cardboard clamps 3 can refer to the EG2-4B0 produced by Suzhou Junduo Robotics Co., Ltd.

[0018] As can be seen from the above, when using it, the cardboard to be tested is placed inside the cardboard clamp 3, the cardboard is clamped by the cardboard clamp 3, and the two cardboard clamps 3 are moved in the same direction to bend the middle of the cardboard and test the bending strength of the cardboard.

[0019] refer to Figure 1 , Figure 2 and Figure 3 As shown, a bending adjustment mechanism 4 is provided between the support plate 2 and the two cardboard clamps 3 to drive the cardboard clamps 3 to rotate up and down, and two torsion adjustment mechanisms 5 are also provided on the outside of the cardboard clamps 3 to drive the cardboard clamps 3 to swing. The curvature adjustment mechanism 4 drives the cardboard clamp 3 to rotate in the vertical direction, so as to adjust the curvature direction of the cardboard during the process of applying extrusion pressure to the cardboard, and realize the strength measurement of the cardboard under the extrusion state. The curvature adjustment mechanism 4 includes two movable frames 404 movably connected to the top of the support plate 2. Two electric hydraulic rods 405 are fixed to the top of the two movable frames 404. Two support frames 406 are fixed to the telescopic ends of the two electric hydraulic rods 405. Two pitch adjustment mechanisms that drive the cardboard clamps 3 to rotate up and down are provided between the two support frames 406 and the two cardboard clamps 3. The torsion adjustment mechanism 5 drives the cardboard clamp 3 to rotate in the horizontal direction to apply a horizontal torsional load to the cardboard and realize the strength measurement of the cardboard under torsion. The torsion adjustment mechanism 5 includes a fixed base 503 fixed to the bottom of the support frame 406. An outer frame 505 is provided at the end of the fixed base 503 away from the support frame 406. A rotary mechanism that drives the cardboard clamp 3 to rotate horizontally is provided inside the outer frame 505.

[0020] refer to Figure 3 , Figure 4 and Figure 5 As shown, the pitch adjustment mechanism includes a rotating block 407 rotatably installed inside the support frame 406, and the middle part of the rotating shaft 408 is fixedly connected to the rotating block 407. The support frame 406 is U-shaped, the rotating block 407 is rotatably connected to the inside of the support frame 406, and the two ends of the rotating shaft 408 pass through the support frame 406 and extend to the outside of the support frame 406.

[0021] refer to Figure 3 , Figure 4 and Figure 5 As shown, a collar 409 is also fitted on the outer wall of the rotating shaft 408. An adjusting rod 410 is fixed at the bottom of the collar 409. An insertion hole adapted to the adjusting rod 410 is also opened on the side of the support frame 406. A limit block is also fixed on the outer wall of the support frame 406. A limit groove adapted to the limit block is also opened inside the collar 409. The collar 409 is located outside the rotating block 407, and the end of the adjusting rod 410 away from the collar 409 is inserted into the insertion hole; Pull the adjusting rod 410 to move it outside the support frame 406. The collar 409 moves axially along the outer wall of the limiting block with the adjusting rod 410. Rotate the adjusting rod 410 to make the collar 409 rotate around the axis of the rotating shaft 408. The collar 409 drives the rotating shaft 408 to rotate synchronously through the limiting block. The rotating shaft 408 drives the rotating block 407 to rotate, and then the rotating block 407 drives the cardboard clamp 3 to rotate in the vertical direction.

[0022] When it is necessary to test the bending of the cardboard, after fixing the cardboard inside the cardboard clamp 3, pull the adjusting rod 410. The adjusting rod 410 moves to the outside of the support frame 406. The adjusting rod 410 drives the collar 409 to move along the outer wall of the limiting block. Rotate the adjusting rod 410 so that the adjusting rod 410 drives the collar 409 to rotate around the axis of the rotating shaft 408. The collar 409 drives the rotating shaft 408 to rotate through the limiting block. The rotating shaft 408 drives the rotating block 407 to rotate. The rotating block 407 drives the cardboard clamp 3 to rotate vertically. Adjust the horizontal angle of the cardboard clamp 3 so that the bending direction of the cardboard is adjusted before the bending strength test.

[0023] refer to Figure 6 , Figure 7 and Figure 8 As shown, the rotary mechanism includes an output rod 511 rotatably installed inside the outer frame 505, a guide rod 516 fixed to the outer wall of the output rod 511, a column 521 fixed to the top of the guide rod 516, and a transmission disc 522 rotatably connected to the end of the column 521 away from the guide rod 516. A mounting base 501 is fixed on the side of the rotating block 407. An extension rod 502 is also fixed between the mounting base 501 and the cardboard clamp 3. A plug shaft 520 is movably connected to the middle of the extension rod 502. A force plate 517 is provided below the plug shaft 520. A groove for the transmission disc 522 to move up and down is opened on the side of the force plate 517 near the output rod 511. When the output rod 511 rotates, it drives the guide rod 516 to rotate around the axis of the output rod 511. The guide rod 516 drives the transmission disk 522 to revolve around the axis of the output rod 511, causing the transmission disk 522 to move along the inside of the groove of the force plate 517. The force plate 517 is driven to move by the cooperation between the groove and the transmission disk 522. The force plate 517 drives the mounting base 501 to rotate around its own axis through the insert shaft 520. The mounting base 501 drives the cardboard clamp 3 to rotate around the axis of the mounting base 501 through the extension rod 502.

[0024] refer to Figure 9 , Figure 10 and Figure 11As shown, a drive motor 506 is also fixed at the bottom of the outer frame 505, a transmission rod 507 is fixed to the output shaft of the drive motor 506, a stop bar 508 is provided on the side of the transmission rod 507, a connecting sleeve 509 is fixed to the top of the stop bar 508, and a swing rod 510 is rotatably connected to the outside of the output rod 511. The connecting sleeve 509 has a through hole in the middle that matches the output rod 511. The connecting sleeve 509 is sleeved on the outer wall of the swing rod 510. Both ends of the swing rod 510 are fixed with wear-resistant sleeves 515. The middle of the wear-resistant sleeve 515 has an installation hole that matches the output rod 511. The wear-resistant sleeve 515 is fixedly connected to the output rod 511.

[0025] refer to Figure 9 , Figure 10 and Figure 11 As shown, for reference Figure 9 , Figure 10 and Figure 11 As shown, a main extension block 512 is fixed to the top of the transmission rod 507, a secondary extension block 513 is sleeved on the outer wall of the stop rod 508, and a locking rod 514 is inserted between the main extension block 512 and the secondary extension block 513. Both the main expansion block 512 and the secondary expansion block 513 have expansion rods on opposite sides, and the middle of the expansion rods has several locking holes that are compatible with the locking rod 514. Pull the locking rod 514 to move it outside the main expansion block 512 and the auxiliary expansion block 513; push the stop rod 508 to move, and the stop rod 508 will drive the connecting sleeve 509 to move along the outer wall of the swing rod 510 to adjust the distance between the stop rod 508 and the transmission rod 507; after the locking hole of the main expansion block 512 expansion rod and the locking hole of the auxiliary expansion block 513 expansion rod are aligned, insert the locking rod 514 back into the corresponding locking hole to achieve relative fixation of the main expansion block 512 and the auxiliary expansion block 513.

[0026] refer to Figure 10 , Figure 11 and Figure 12 The top of the load-bearing plate 517 is also fixed with a wedge block 518. A pull plate 519 is provided above the wedge block 518. The bottom of the pull plate 519 is provided with a wedge groove that matches the wedge block 518. The two ends of the pull plate 519 are also provided with mounting holes that match the insert shaft 520. A load-bearing plate 504 is also fixed to the end of the fixed base 503 away from the support frame 406. A groove is provided in the middle of the load-bearing plate 504, and a protrusion that matches the groove is provided on the top of the inner wall of the outer frame 505.

[0027] A servo motor 401 is also fixed to the side of the support plate 2. The output shaft of the servo motor 401 is fixed with a bidirectional threaded rod 402. Two moving plates 403 are also fixed to the bottom of the two moving frames 404. The middle of the two moving plates 403 is provided with threaded holes that are compatible with the bidirectional threaded rod 402.

[0028] When the torsional strength of the cardboard needs to be tested, the drive motor 506 is started. The output shaft of the drive motor 506 drives the transmission rod 507 to rotate. The transmission rod 507 drives the stop rod 508 to rotate around the axis of the transmission rod 507 through the main extension block 512 and the auxiliary extension block 513. The stop rod 508 drives the connecting sleeve 509 to rotate around the axis of the transmission rod 507. The connecting sleeve 509 is limited by the swing rod 510, causing the connecting sleeve 509 to move along the outer wall of the swing rod 510. The wear-resistant sleeve 515 cooperates with the output rod 511, causing the wear-resistant sleeve 515 to drive the output rod 511 to reciprocate around the output rod 511. The output rod 511 drives the guide rod 516 to rotate around the axis of the output rod 511. The guide rod 516 drives the transmission disc 522 to swing around the axis of the guide rod 516 through the column 521. The transmission disc 522 cooperates with the groove of the force plate 517, so that the transmission disc 522 moves along the inside of the groove of the force plate 517. The force plate 517 is driven to move by the cooperation between the groove of the force plate 517 and the transmission disc 522. The force plate 517 drives the mounting base 501 to rotate around the axis of the mounting base 501 through the insert shaft 520. The mounting base 501 drives the cardboard clamp 3 to rotate around the axis of the mounting base 501 through the extension rod 502.

[0029] Working principle: When testing the bending strength of cardboard, first fix the cardboard to be tested inside the cardboard clamp 3, pull the adjusting rod 410 to move it to the outside of the support frame 406, and the adjusting rod 410 drives the collar 409 to move along the outer wall of the limiting block; rotate the adjusting rod 410 so that the adjusting rod 410 drives the collar 409 to rotate around the axis of the rotating shaft 408. The collar 409 drives the rotating shaft 408 to rotate synchronously through the limiting block. The rotating shaft 408 further drives the rotating block 407 to rotate. The rotating block 407 drives the cardboard clamp 3 to rotate in the vertical direction through the mounting base 501 and the extension rod 502. Adjust the horizontal tilt angle of the cardboard clamp 3 to achieve the bending strength test. Before testing, adjust the bending direction of the cardboard and start the servo motor 401. The output shaft of the servo motor 401 drives the bidirectional threaded rod 402 to rotate. The bidirectional threaded rod 402 engages with the threaded hole of the moving plate 403, causing the moving plate 403 to move laterally back and forth along the outer wall of the bidirectional threaded rod 402. The moving plate 403 drives the electric hydraulic rod 405 to move laterally back and forth through the moving frame 404. The electric hydraulic rod 405 drives the mounting base 501 to move laterally back and forth through the support frame 406 and the rotating block 407. The mounting base 501 drives the cardboard clamp 3 to move laterally back and forth through the extension rod 502, making the distance between the two cardboard clamps 3 larger or smaller.

[0030] When performing a torsional strength test on cardboard, the drive motor 506 is started. The output shaft of the drive motor 506 drives the transmission rod 507 to rotate. The transmission rod 507 is transmitted through the main extension block 512 and the auxiliary extension block 513, causing the stop rod 508 to rotate around the axis of the transmission rod 507. The stop rod 508 synchronously drives the connecting sleeve 509 to revolve around the axis of the transmission rod 507. The swing rod 510 provides a limiting guide for the connecting sleeve 509, causing the connecting sleeve 509 to move along the outer wall of the swing rod 510. Under the combined action of the wear-resistant sleeve 515 and the output rod 511, the wear-resistant sleeve 515 drives the output rod 511 to reciprocate. The output rod 511 drives the guide rod 516 to rotate around its own axis. After being driven by the column 521, the guide rod 516 drives the transmission disc 522 to swing around the axis of the guide rod 516. The transmission disc 522 slides in cooperation with the groove of the force plate 517 and moves along the inside of the groove with the swinging motion. The cooperation between the groove and the transmission disc 522 drives the force plate 517 to generate displacement. After being driven by the insertion shaft 520, the force plate 517 drives the mounting base 501 to rotate around its own axis. Finally, the mounting base 501 drives the cardboard clamp 3 to rotate around the axis of the mounting base 501 through the extension rod 502, thus completing the application of torsional load to the cardboard.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A cardboard processing apparatus with strength testing function, comprising a testing table (1), a support plate (2) fixed on the top of the testing table (1), and two cardboard clamps (3) for clamping cardboard arranged above the support plate (2), characterized in that, A bending adjustment mechanism (4) is provided between the support plate (2) and the two cardboard clamps (3) to drive the cardboard clamps (3) to rotate up and down, and two torsion adjustment mechanisms (5) are also provided on the outside of the cardboard clamps (3) to drive the cardboard clamps (3) to swing. The curvature adjustment mechanism (4) drives the cardboard clamp (3) to rotate in the vertical direction, so as to adjust the curvature direction of the cardboard during the process of applying pressure to the cardboard, and realize the strength measurement of the cardboard under the pressure state. The curvature adjustment mechanism (4) includes two movable frames (404) movably connected to the top of the support plate (2). Two electric hydraulic rods (405) are fixed to the top of the two movable frames (404). Two support frames (406) are fixed to the telescopic ends of the two electric hydraulic rods (405). Two pitch adjustment mechanisms that drive the cardboard clamps (3) to rotate up and down are provided between the two support frames (406) and the two cardboard clamps (3). The torsion adjustment mechanism (5) drives the cardboard clamp (3) to rotate in the horizontal direction to apply a horizontal torsional load to the cardboard and realize the strength measurement of the cardboard under torsion. The torsion adjustment mechanism (5) includes a fixed seat (503) fixed to the bottom of the support frame (406). An outer frame (505) is provided at the end of the fixed seat (503) away from the support frame (406). A rotary mechanism that drives the cardboard clamp (3) to rotate horizontally is provided inside the outer frame (505).

2. The paperboard processing apparatus with strength testing function according to claim 1, characterized in that, The pitch adjustment mechanism includes a rotating block (407) rotatably installed inside the support frame (406), and the middle part of the rotating shaft (408) is fixedly connected to the rotating block (407); The support frame (406) is U-shaped, the rotating block (407) is rotatably connected to the inside of the support frame (406), and the two ends of the rotating shaft (408) pass through the support frame (406) and extend to the outside of the support frame (406).

3. The paperboard processing apparatus with strength testing function according to claim 2, characterized in that, The outer wall of the rotating shaft (408) is also fitted with a collar (409), and an adjusting rod (410) is fixed at the bottom of the collar (409). The side of the support frame (406) is also provided with an insertion hole that matches the adjusting rod (410). The outer wall of the support frame (406) is also fixed with a limiting block. The inside of the collar (409) is also provided with a limiting groove that matches the limiting block. The collar (409) is located outside the rotating block (407), and the end of the adjusting rod (410) away from the collar (409) is inserted into the socket.

4. The paperboard processing apparatus with strength testing function according to claim 2, characterized in that, The rotary mechanism includes an output rod (511) rotatably installed inside the outer frame (505), a guide rod (516) fixed to the outer wall of the output rod (511), a column (521) fixed to the top of the guide rod (516), and a transmission disc (522) rotatably connected to one end of the column (521) away from the guide rod (516). The rotating block (407) has a mounting base (501) fixed on its side. An extension rod (502) is also fixed between the mounting base (501) and the cardboard clamp (3). A plug shaft (520) is movably connected to the middle of the extension rod (502). A force plate (517) is provided below the plug shaft (520). A groove for the transmission disc (522) to move up and down is opened on the side of the force plate (517) near the output rod (511).

5. The paperboard processing apparatus with strength testing function according to claim 4, characterized in that, The bottom of the outer frame (505) is also fixed with a drive motor (506), the output shaft of the drive motor (506) is fixed with a transmission rod (507), a stop bar (508) is provided on the side of the transmission rod (507), a connecting sleeve (509) is fixed on the top of the stop bar (508), and a swing rod (510) is rotatably connected to the outside of the output rod (511). The connecting sleeve (509) has a through hole in the middle that matches the output rod (511). The connecting sleeve (509) is fitted onto the outer wall of the swing rod (510). Both ends of the swing rod (510) are fixed with wear-resistant sleeves (515). The middle of the wear-resistant sleeve (515) has an installation hole that matches the output rod (511). The wear-resistant sleeve (515) is fixedly connected to the output rod (511).

6. The paperboard processing apparatus with strength testing function according to claim 5, characterized in that, The top of the transmission rod (507) is also fixed with a main extension block (512), and the outer wall of the stop bar (508) is fitted with a secondary extension block (513). A locking rod (514) is also inserted between the main extension block (512) and the secondary extension block (513). Both the main expansion block (512) and the secondary expansion block (513) are provided with expansion rods on opposite sides, and the middle of the expansion rods is provided with several lock holes that are compatible with the locking rod (514).

7. The paperboard processing apparatus with strength testing function according to claim 4, characterized in that, The top of the force plate (517) is also fixed with a wedge block (518), and a pull plate (519) is provided above the wedge block (518). The bottom of the pull plate (519) is provided with a wedge groove that matches the wedge block (518), and the two ends of the pull plate (519) are also provided with mounting holes that match the insert shaft (520). The fixed base (503) is also fixed with a load-bearing plate (504) at the end away from the support frame (406). The load-bearing plate (504) has a groove in the middle, and the top of the inner wall of the outer frame (505) is also provided with a protrusion that matches the groove.

8. The paperboard processing apparatus with strength testing function according to claim 1, characterized in that, The side of the support plate (2) is also fixed with a servo motor (401), the output shaft of the servo motor (401) is fixed with a bidirectional threaded rod (402), and the bottom of the two moving frames (404) is also fixed with two moving plates (403), and the middle of the two moving plates (403) is provided with threaded holes that are compatible with the bidirectional threaded rod (402).

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