Paper bursting strength testing device for papermaking production

Abstract

The invention discloses a paper bursting strength test device for papermaking production, and relates to the technical field of paper bursting strength test.The paper bursting strength test device comprises a workbench and a test bed fixedly connected to the top of the workbench, and a hydraulic cylinder is installed in the test bed; the output end of the hydraulic cylinder penetrates through the outside of the test bed and is fixedly connected with a pressing shell, and the inner side of the pressing shell is fixedly connected with a bottom supporting shell below the pressing shell. By arranging the stepped presser and the three groups of pressing rings with the elastic coefficients gradually increased from inside to outside, multi-layer limiting is jointly formed on the edge of the paper in the initial stage, the paper moves upwards in stages along with the action of the detection head subsequently, effective constraint can be formed on the edge of the paper all the time, and it is ensured that breakage of the paper is only caused by breakage pressure applied by the detection head; interference of irrelevant factors such as edge looseness on a test result is eliminated from the source, so that the detection accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of paper bursting strength testing technology, specifically a paper bursting strength testing device for paper production. Background Technology

[0002] Paper is a thin sheet made of plant fibers. It serves as a good medium for writing, drawing, printing books and newspapers, packaging, and other tasks. In order to meet people's needs and with the development of technology, paper production has gradually become mechanized, which has greatly improved paper production efficiency. In order to provide good paper, it is necessary to test its burst strength during paper production. Currently, paper burst strength testing requires specialized personnel to hold the paper and test it through a paper burst strength tester.

[0003] In the quality inspection stage of papermaking production, bursting strength is one of the core indicators for evaluating the performance of the finished product, and the accuracy of its test results directly affects the application suitability of the paper product. However, currently widely used traditional paper bursting strength testing devices generally employ a single clamping structure to fix and limit the paper. In actual testing, when the testing head applies pressure to the paper and causes it to bulge and deform, this single clamping structure is unable to provide a continuous and stable constraint on the paper edges, which can easily lead to loosening and slippage of the paper edges, and in severe cases, even premature tearing of the paper edges.

[0004] The aforementioned problems mean that paper breakage is not entirely caused by the breaking pressure applied by the detection head, but is also affected by additional interference from edge constraint failure, directly causing distorted test data and failing to accurately reflect the true bursting strength of the paper. To address this issue, this application proposes a paper bursting strength testing device for paper production, aiming to overcome the shortcomings of traditional devices through optimized structural design and ensure accurate and reliable test results. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that in the existing paper bursting strength test process, the paper is initially fixed and limited by a single clamping structure, which makes it difficult to form a continuous and stable constraint on the paper edge, and the paper edge is prone to loosening and slipping. The invention provides a paper bursting strength test device for papermaking production.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a paper bursting strength testing device for papermaking production, comprising: a workbench and a test bench fixedly connected to the top of the workbench; a hydraulic cylinder is installed inside the test bench, and the output end of the hydraulic cylinder extends through to the outside of the test bench and is fixedly connected to a clamping shell; a bottom support shell is fixedly connected to the inner side of the clamping shell below the clamping shell; a stepped clamping device, located inside the clamping shell, is used for stepped clamping during paper testing; the stepped clamping device includes three sets of clamping rings and three fixing rings disposed inside the clamping shell, each set of clamping rings having two rings, and each fixing ring having two clamping rings correspondingly disposed at its bottom; and an adjustment auxiliary device, located between each fixing ring and the corresponding two clamping rings, for adjusting the angle of the clamping rings.

[0007] As a further embodiment of the present invention: the stepped clamping device further includes three sets of sleeves disposed inside the clamping shell, wherein two sets of sleeves are fixedly connected to the inside of the clamping shell, each set of sleeves has two sleeves, each set of sleeves is disposed above a fixed ring, each sleeve has a sliding rod slidably connected to its inner side, each sliding rod has its bottom fixedly connected to a fixed ring below it, each sliding rod is connected to each sleeve with a connecting spring, and an adjusting component is disposed between the clamping shell and each set of sleeves.

[0008] As a further aspect of the present invention, the elastic coefficients of the connecting springs on the inner sides of the three sets of sleeves increase sequentially from the inside to the outside.

[0009] As a further embodiment of the present invention: the adjustment assembly includes a first suspension seat fixedly connected to the top of the inner side of the clamping shell, and a one-way threaded screw is rotatably connected to the inner side of each first suspension seat. A drive motor for driving the one-way threaded screw is installed on the inner side of the first suspension seat. A traction block is threadedly connected to the outer wall of the one-way threaded screw, and the traction block is fixedly connected to the sleeve.

[0010] As a further embodiment of the present invention: a limiting block is fixedly connected to the outer wall of the traction block, and a limiting groove matching the traction block is provided on the inner side of the first suspension seat. The traction block is slidably connected to the first suspension seat through the limiting block fixedly connected to the outer wall.

[0011] As a further embodiment of the present invention: the adjustment assembly further includes a first connecting block fixedly connected to the outer wall of the innermost sleeve and the outer wall of the slide rod located in the middle position, and a second connecting block fixedly connected to the outermost two outer walls of the slide rod, with the second connecting block and the first connecting block arranged one in front of the other and one above the other.

[0012] As a further embodiment of the present invention: the outermost two sleeves are provided with the same guide grooves as the inner ones, and the sleeve located in the middle has guide grooves on both sides, and the guide grooves match the second connecting block and the first connecting block.

[0013] As a further embodiment of the present invention: the adjustment aid includes two sets of second suspension seats suspended at the bottom of each of the fixed rings, each set of second suspension seats has two seats, a rotating shaft is rotatably connected between the two second suspension seats, and a rotating block is fixedly connected to the outer wall of the rotating shaft, and the rotating block is disposed at the top of the clamping ring, and an adaptation auxiliary component is disposed between the rotating block and the clamping ring.

[0014] As a further embodiment of the present invention: the adjustment aid further includes a third suspension seat fixedly connected to the outer wall of the second suspension seat, a worm gear rotatably connected to the inner side of the third suspension seat, a spur gear fixedly connected to the end of the worm gear extending to the outside of the third suspension seat, a spur rack meshing on one side of the spur gear, a worm wheel meshing with the worm gear fixedly connected to the outer wall of the rotating shaft, a suspension rod fixedly connected to the top of the spur rack, and one end of the suspension rod passing through the first connecting block and the second connecting block and fixedly connected to the clamping shell.

[0015] As a further embodiment of the present invention: the adaptive auxiliary component includes a T-shaped block fixedly connected to the bottom of the rotating block, the top of the clamping ring is provided with a T-shaped groove that matches the T-shaped block, and a compression spring is installed between the T-shaped groove and the T-shaped block.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By setting up a stepped clamping device, if a traditional testing device uses a single clamping structure, the paper is prone to loosening, sliding, or even premature tearing at the edges when it is squeezed and bulged by the detection head. This results in the test results not reflecting the true bursting strength of the paper. However, in this device, the three sets of clamping rings with increasing elastic coefficients from the inside to the outside form multiple layers of restraint on the paper edge in the initial stage. Subsequently, they move upward in stages as the detection head moves, always effectively restraining the paper edge. This ensures that the paper breakage is caused only by the breaking pressure applied by the detection head, eliminating the interference of irrelevant factors such as edge loosening on the test results from the root, thereby improving the accuracy of the test.

[0018] 2. By setting up the coordination of parts such as the adjustment component, the one-way threaded screw in the adjustment component cooperates with the traction block, and with the guiding effect of the limit block and the limit slide, the upward movement of the sleeve driving the clamping ring can be smooth and the displacement is accurate. At the same time, the contact between the first connecting block and the second connecting block realizes the linkage movement of the clamping ring, ensuring that the actions of multiple sets of clamping rings are connected in an orderly manner, avoiding the impact of the limiting effect due to the movement deviation of the clamping ring, and further improving the accuracy of the test data;

[0019] 3. By setting an adjustment auxiliary device, the paper will gradually bulge under the pressure of the detection head. If the clamping ring maintains a fixed angle, it will rigidly resist the edge of the bulging paper, generating additional tensile or compressive stress, which may cause the paper to break prematurely under non-detection pressure, resulting in distorted test data. The adjustment auxiliary device, through the linkage transmission of spur gears, spur gears, worm gears and worm wheels, can drive the clamping ring to tilt up synchronously when moving upward. The two tilted clamping rings form an arch structure. This arch can accurately fit the edge contour of the bulging paper, changing the clamping ring from "rigid pressing" to "fitting and limiting", avoiding additional stress on the paper, ensuring that the paper breakage is only caused by the breaking pressure of the detection head, and ensuring that the test data is consistent with the true bursting performance of the paper.

[0020] 4. By setting an adaptive auxiliary component, the ends of the two clamping rings initially abut against each other. When the two clamping rings are raised synchronously, they will generate relative compression, thereby sliding relative to the T-block and automatically adjusting their positions. The initial abutment of the two clamping rings is intended to form a complete ring-shaped limit. However, during the synchronous raising to form an arch, their movement trajectories may be slightly misaligned due to factors such as the force angle and minor transmission deviations. This can easily cause them to jam or collide, preventing the arch from forming smoothly. The sliding cooperation between the T-block and the T-slot allows the two clamping rings to freely adjust their positions during relative compression. During compression, they can slide slightly in the opposite direction along the T-slot. After the compression force disappears, the compression spring can push them back to their original positions, resolving the positional conflict between the two clamping rings and ensuring that the two clamping rings can always smoothly form an arch that fits the raised edge of the paper, thus ensuring the shape adaptability of the limit structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the inner structure of the test bench of the present invention;

[0023] Figure 3 This is a cross-sectional view of the clamping shell of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a cross-sectional view of the sleeve of the present invention;

[0026] Figure 6 This is a schematic diagram of the adjustment aid structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the inner structure of the second suspension seat of the present invention;

[0028] Figure 8 This is a schematic diagram of the clamping ring of the present invention changing from a flat state to a raised state.

[0029] In the diagram: 1. Workbench; 2. Test bench; 3. Clamping shell; 4. Hydraulic cylinder; 5. Base shell; 6. Clamping ring; 7. First suspension seat; 8. Sleeve; 9. Slide rod; 10. Fixing ring; 11. Connecting spring; 12. First connecting block; 13. Second connecting block; 14. Suspension rod; 15. Traction block; 16. One-way threaded screw; 17. Drive motor; 18. Second suspension seat; 19. Rotating block; 20. T-block; 21. T-slot; 22. Compression spring; 23. Rotating shaft; 24. Spur rack; 25. Worm gear; 26. Third suspension seat; 27. Spur gear; 28. Worm. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0032] Please see Figures 1 to 8This embodiment provides a paper bursting strength testing device for papermaking production, including: a workbench 1 and a test bench 2 fixedly connected to the top of the workbench 1. A hydraulic cylinder 4 is installed inside the test bench 2, and the output end of the hydraulic cylinder 4 extends through to the outside of the test bench 2 and is fixedly connected to a clamping shell 3. A bottom support shell 5 is fixedly connected to the inner side of the clamping shell 3 below the clamping shell 3. A stepped clamping device is located inside the clamping shell 3 and is used to perform stepped clamping during paper testing. The stepped clamping device includes three sets of clamping rings 6 and three fixing rings 10 disposed inside the clamping shell 3. Each set of clamping rings 6 is provided with The device has two sets of clamping rings 6, with two clamping rings 6 corresponding to the bottom of each fixing ring 10. The stepped clamping device also includes three sets of sleeves 8 disposed inside the clamping shell 3. Two sets of sleeves 8 are fixedly connected to the inside of the clamping shell 3. Each set of sleeves 8 has two sleeves, and each set of sleeves 8 is disposed above a fixing ring 10. A slide rod 9 is slidably connected to the inside of each sleeve 8. The bottom of each slide rod 9 is fixedly connected to a fixing ring 10 below it. A connecting spring 11 is installed between each slide rod 9 and each sleeve 8. An adjusting component is provided between the clamping shell 3 and each set of sleeves 8. The elastic coefficient of the connecting spring 11 inside the sleeve 8 increases sequentially from the inside to the outside. The adjusting assembly includes a first suspension seat 7 fixedly connected to the top of the inner side of the clamping shell 3. A one-way threaded screw 16 is rotatably connected to the inner side of each first suspension seat 7. A drive motor 17 for driving the one-way threaded screw 16 is installed inside the first suspension seat 7. A traction block 15 is threadedly connected to the outer wall of the one-way threaded screw 16, and the traction block 15 is fixedly connected to the sleeve 8. A limit block is fixedly connected to the outer wall of the traction block 15. A limit groove matching the traction block 15 is opened on the inner side of the first suspension seat 7. 15 The limiting block fixedly connected to the outer wall is slidably connected to the first suspension seat 7. The adjustment component also includes a first connecting block 12 fixedly connected to the outer wall of the innermost sleeve 8 and the outer wall of the slide rod 9 located in the middle position, and a second connecting block 13 fixedly connected to the outer walls of the two outermost slide rods 9. The second connecting block 13 and the first connecting block 12 are arranged one in front of the other and one behind the other. The outer sides of the two outermost sleeves 8 are provided with the same guide grooves as the inside. The sleeve 8 located in the middle has guide grooves on both sides, and the guide grooves match the second connecting block 13 and the first connecting block 12.

[0033] First, when a bursting strength test of paper is required, a test head for testing is installed on the inner side of the bottom shell 5. The paper is clamped in the middle by the clamping shell 3 and the bottom shell 5, and then the bursting strength test is carried out through the test head. Since this is existing technology, it is not described in detail in this solution.

[0034] When a bursting strength test is required on the paper, the hydraulic cylinder 4 is activated, causing the clamping shell 3 to move downwards and compress the paper. This causes the three sets of clamping rings 6 to press against the paper. When the testing head compresses the paper during the bursting strength test, causing it to bulge, the three sets of clamping rings 6 with different elastic coefficients initially limit the edges of the paper. After the testing head has moved a certain distance, the PLC controller controls the drive motor 17 to start, thereby driving the one-way threaded screw 16 to rotate. This, in turn, drives one of the sleeves 8, which in turn moves one of the clamping rings 6 upwards, allowing the testing head to complete the test at a certain stage. The clamping ring 6 moves upward synchronously relative to the detection head. At this time, the second set of clamping rings 6 limits the edge of the paper during the test. When the innermost sleeve 8 moves upward a certain distance, the first connecting block 12 contacts the second connecting block 13, which pushes the middle slide bar 9 to drive the middle clamping ring 6 to move upward. This allows the middle clamping ring 6 to gradually contact and limit the edge of the paper. When the middle slide bar 9 moves upward a certain distance, the first connecting block 12 fixed on one side contacts the second connecting block 13 above, pushing the tail slide bar 9 to move upward and gradually separate from the paper.

[0035] If a traditional testing device uses a single compression structure, the edges of the paper are prone to loosening, sliding, or even premature tearing when the paper is squeezed and bulged by the detection head. This results in the test results failing to reflect the true bursting strength of the paper. However, in this device, three sets of compression rings 6 with increasing elastic coefficients from the inside to the outside work together to form multiple layers of restraint on the paper edges in the initial stage. Subsequently, they move upward in stages as the detection head moves, always effectively restraining the paper edges. This ensures that the paper breakage is caused only by the breaking pressure applied by the detection head, eliminating the interference of irrelevant factors such as edge loosening on the test results from the root, thereby improving the accuracy of the test.

[0036] The one-way threaded screw 16 in the adjusting assembly cooperates with the traction block 15. With the guidance of the limiting block and the limiting slide, the upward movement of the sleeve 8 and the clamping ring 6 is smooth and the displacement is precise. At the same time, the linkage movement of the clamping ring 6 is achieved through the contact of the first connecting block 12 and the second connecting block 13, which ensures that the actions of multiple sets of clamping rings 6 are connected in an orderly manner, avoids the limiting effect due to the movement deviation of the clamping ring, and further improves the accuracy of the test data.

[0037] Please see Figures 3-8An adjustment aid, located between each fixed ring 10 and two corresponding clamping rings 6, is used to adjust the angle of the clamping rings 6. The adjustment aid includes two sets of second suspension seats 18 suspended at the bottom of each fixed ring 10. Each set of second suspension seats 18 has two seats. A rotating shaft 23 is rotatably connected between the two second suspension seats 18, and a rotating block 19 is fixedly connected to the outer wall of the rotating shaft 23. The rotating block 19 is located on the top of the clamping ring 6, and an adaptation auxiliary component is provided between the rotating block 19 and the clamping ring 6. It also includes a third suspension seat 26 fixedly connected to the outer wall of the second suspension seat 18. A worm 28 is rotatably connected to the inner side of the third suspension seat 26. A spur gear 27 is fixedly connected to the end of the worm 28 through the outer side of the third suspension seat 26. A spur rack 24 meshes with one side of the spur gear 27. A worm wheel 25 meshes with the worm 28 and is fixedly connected to the outer wall of the rotating shaft 23. A suspension rod 14 is fixedly connected to the top of the spur rack 24, and one end of the suspension rod 14 passes through the first connecting block 12 and the second connecting block 13 and is fixedly connected to the clamping shell 3.

[0038] As the slide bar 9 moves the clamping ring 6 upward, the rack 24 remains stationary, causing the rack 24 to drive the spur gear 27 to rotate the worm gear 28. The worm gear 28 then drives the worm wheel 25 to rotate, causing the rotating block 19 to rotate the clamping ring 6. This allows the clamping ring 6 to rotate into a raised state during its initial upward movement. The two raised clamping rings 6 form an arch that fits the raised edge of the paper. When the rack 24 separates from the spur gear 27, the clamping ring 6 remains in the raised state.

[0039] The distance that the spur rack 24 drives the spur gear 27 to rotate is only enough to press the ring 6 into a state of tilting about ten degrees.

[0040] When the paper is pressed by the detection head, it will gradually bulge. If the clamping ring 6 is kept at a fixed angle, it will rigidly resist the edge of the bulging paper, generating additional tensile or compressive stress. This may cause the paper to break prematurely under non-detection pressure, resulting in distorted test data. The adjustment auxiliary device, through the linkage of spur gear 24, spur gear 27, worm gear 28 and worm wheel 25, can drive the clamping ring 6 to tilt upwards synchronously. The two tilted clamping rings 6 form an arched structure. This arch can precisely fit the edge contour of the bulging paper, changing the clamping ring 6 from "rigid pressing" to "fitting and limiting", avoiding additional stress on the paper. This ensures that the paper breakage is caused only by the breaking pressure of the detection head, and guarantees that the test data accurately reflects the true bursting strength of the paper.

[0041] Please see Figure 7The adaptive auxiliary components include a T-shaped block 20 fixedly connected to the bottom of the rotating block 19, and a T-shaped groove 21 matching the T-shaped block 20 is opened on the top of the clamping ring 6. A compression spring 22 is installed between the T-shaped groove 21 and the T-shaped block 20.

[0042] The two clamping rings 6 initially abut against each other. When the two clamping rings 6 are raised synchronously, they will generate relative compression, thereby sliding relative to the T-block 20 to automatically adjust their positions. The initial abutment of the two clamping rings is intended to form a complete ring-shaped limit. However, during the synchronous raising to form an arch, their movement trajectories may be slightly misaligned due to factors such as the force angle and minor transmission deviations. This can easily cause them to jam or collide, preventing the arch from forming smoothly. The sliding cooperation between the T-block 20 and the T-groove 21 allows the two clamping rings 6 to freely adjust their positions during relative compression. During compression, they can slide slightly in the opposite direction along the T-groove 21. After the compression force disappears, the compression spring 22 can push them back to their original positions, resolving the positional conflict between the two clamping rings 6 and ensuring that the two clamping rings 6 can always smoothly form an arch that fits the raised edge of the paper, thus ensuring the shape adaptability of the limit structure.

[0043] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A paper bursting strength testing device for papermaking production, characterized in that, include: The workbench (1) and the test bench (2) are fixedly connected to the top of the workbench (1). A hydraulic cylinder (4) is installed inside the test bench (2), and the output end of the hydraulic cylinder (4) extends through to the outside of the test bench (2) and is fixedly connected to a clamping shell (3). A bottom support shell (5) is fixedly connected to the inner side of the clamping shell (3) below the clamping shell (3). A stepped clamping device is located inside the clamping shell (3) and is used to perform stepped clamping during paper testing. The stepped clamping device includes three sets of clamping rings (6) and three fixing rings (10) disposed inside the clamping shell (3). Each set of clamping rings (6) is provided with two rings, and each fixing ring (10) has two clamping rings (6) corresponding to its bottom. An adjustment aid is located between each of the fixed rings (10) and the two corresponding clamping rings (6) for adjusting the angle of the clamping rings (6).

2. The paper bursting strength testing device for papermaking production according to claim 1, characterized in that, The stepped clamping device also includes three sets of sleeves (8) disposed inside the clamping shell (3), wherein two sets of sleeves (8) are fixedly connected to the inside of the clamping shell (3), each set of sleeves (8) has two sleeves, each set of sleeves (8) is disposed above a fixed ring (10), each sleeve (8) is slidably connected to a slide rod (9) on its inner side, each slide rod (9) is fixedly connected to a fixed ring (10) below it at its bottom, a connecting spring (11) is installed between each slide rod (9) and each sleeve (8), and an adjustment component is disposed between the clamping shell (3) and each set of sleeves (8).

3. The paper bursting strength testing device for papermaking production according to claim 2, characterized in that, The elastic coefficients of the connecting springs (11) inside the three sets of sleeves (8) increase sequentially from the inside to the outside.

4. The paper bursting strength testing device for papermaking production according to claim 2, characterized in that, The adjustment assembly includes a first suspension seat (7) fixedly connected to the top of the inner side of the clamping shell (3). Each first suspension seat (7) is rotatably connected to a one-way threaded screw (16). A drive motor (17) for driving the one-way threaded screw (16) is installed on the inner side of the first suspension seat (7). A traction block (15) is threadedly connected to the outer wall of the one-way threaded screw (16), and the traction block (15) is fixedly connected to the sleeve (8).

5. The paper bursting strength testing device for papermaking production according to claim 4, characterized in that, The outer wall of the traction block (15) is fixedly connected to a limiting block, and the inner side of the first suspension seat (7) is provided with a limiting groove that matches the traction block (15). The traction block (15) is slidably connected to the first suspension seat (7) through the limiting block fixedly connected to the outer wall.

6. The paper bursting strength testing device for papermaking production according to claim 4, characterized in that, The adjustment assembly also includes a first connecting block (12) fixedly connected to the outer wall of the innermost sleeve (8) and the outer wall of the slide rod (9) located in the middle position, and a second connecting block (13) fixedly connected to the outer walls of the two outermost slide rods (9). The second connecting block (13) and the first connecting block (12) are arranged one in front of the other and one behind the other.

7. The paper bursting strength testing device for papermaking production according to claim 6, characterized in that, The outermost two sleeves (8) have the same guide grooves as the inner ones. The sleeve (8) located in the middle has guide grooves on both sides, and the guide grooves match the second connecting block (13) and the first connecting block (12).

8. The paper bursting strength testing device for papermaking production according to claim 6, characterized in that, The adjustment aid includes two sets of second suspension seats (18) suspended at the bottom of each fixed ring (10). Each set of second suspension seats (18) has two seats. A rotating shaft (23) is rotatably connected between the two second suspension seats (18). A rotating block (19) is fixedly connected to the outer wall of the rotating shaft (23). The rotating block (19) is located at the top of the clamping ring (6). An adaptation auxiliary component is provided between the rotating block (19) and the clamping ring (6).

9. The paper bursting strength testing device for papermaking production according to claim 8, characterized in that, The adjustment aid also includes a third suspension seat (26) fixedly connected to the outer wall of the second suspension seat (18). A worm gear (28) is rotatably connected to the inner side of the third suspension seat (26). A spur gear (27) is fixedly connected to the end of the worm gear (28) through the outer side of the third suspension seat (26). A rack (24) meshes with one side of the spur gear (27). A worm wheel (25) meshing with the worm gear (28) is fixedly connected to the outer wall of the rotating shaft (23). A suspension rod (14) is fixedly connected to the top of the rack (24), and one end of the suspension rod (14) passes through the first connecting block (12), the second connecting block (13), and is fixedly connected to the clamping shell (3).

10. The paper bursting strength testing device for papermaking production according to claim 8, characterized in that, The adaptive auxiliary component includes a T-shaped block (20) fixedly connected to the bottom of the rotating block (19), and a T-shaped groove (21) matching the T-shaped block (20) is provided on the top of the clamping ring (6). A compression spring (22) is installed between the T-shaped groove (21) and the T-shaped block (20).

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