An automated tensile force adjustable multifilament specimen tensile testing apparatus and method of use

Abstract

This invention belongs to the technical field of testing equipment, specifically disclosing an automated adjustable tension multifilament strip tensile testing device, including a support assembly, an adjustment assembly, a testing assembly, a clamping assembly, a gear ring, a first motor, a first gear, a conveying assembly, and a rotating column. Two adjustment assemblies are symmetrically arranged on the support assembly, and testing assemblies are located at the ends of both adjustment assemblies. A clamping assembly and a rotating column are also provided on the support assembly. Multifilaments are wound around the testing assemblies and the rotating column. A gear ring is rotatably mounted on the support assembly. A first gear is fixedly mounted on the output shaft of the first motor, meshing with the gear ring for transmission. A conveying assembly is fixedly mounted on the gear ring, used to rotate and convey the multifilaments to be tested. This invention effectively clamps and fixes the multifilaments, achieving tensile testing by winding the multifilaments around the testing assemblies and the rotating column, and then adjusting the spacing between the testing assemblies.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and more specifically, to an automated adjustable tension multifilament strip tensile testing device and its usage method. Background Technology

[0002] Carbon fiber refers to inorganic material fibers with a carbon fiber content of more than 90%. It has a series of excellent properties such as low density, light weight, high specific strength, high specific modulus, low coefficient of thermal expansion, high temperature resistance, wear resistance, corrosion resistance, and fatigue resistance. Therefore, it is widely used in aerospace, sports and leisure, and civilian fields.

[0003] The prior art publication CN102809499B provides a sample preparation method for testing the tensile properties of carbon fiber. The device includes a main support, a central shaft, a winding frame, and a fixed rod and a telescopic rod for supporting the winding frame. This device can not only greatly reduce the sample preparation time, but also effectively adjust the fiber tension, so that the test sample is straight, ensure the uniformity of the test sample, and ultimately ensure the accuracy of the test results.

[0004] Although the existing technical solutions mentioned above can achieve the relevant beneficial effects through the existing technical structure, they still have the following drawbacks: tension adjustment and multifilament winding processes both require manual operation by the test personnel, resulting in poor tension adjustment capability and cumbersome testing.

[0005] There is an urgent need to add automatic winding, tensioning, and end-and-end clamping functions to the equipment to reduce the difficulty of operation for testing personnel.

[0006] In view of this, we propose an automated adjustable tension multifilament strip tensile testing device and its usage method. Summary of the Invention

[0007] 1. Technical problems to be solved

[0008] The purpose of this application is to provide an automated adjustable tension multifilament strip tensile testing device and its usage method, which solves the technical problems mentioned in the background art above, and realizes that the spacing between the test components is adjustable. By increasing the spacing, multifilament tensile testing can be performed, which is highly flexible and easy for experimental personnel to operate.

[0009] 2. Technical Solution

[0010] This application provides an automated adjustable tension multifilament strip tensile testing device, including a support assembly, a spacing adjustment assembly, a testing assembly, a clamping assembly, a gear ring, a first motor, a first gear, a conveying assembly, and a rotating column;

[0011] The support assembly has two symmetrically arranged adjustable components.

[0012] Each of the two adjustable spacing components is fixedly provided with a test component at its end. The adjustable spacing component is used to adjust the distance between the two test components, and the test component is used to adjust the tension of the multifilament and test the tensile force.

[0013] A clamping component is fixedly installed on the support component, which is used to clamp and fix the beginning and end of the multifilament. A rotating column is provided on the support component.

[0014] Multifilaments are wound around the test assembly and the rotating column.

[0015] A gear ring is rotatably mounted on the support assembly, a first motor is fixedly mounted on the support assembly, a first gear is fixedly mounted on the output shaft of the first motor, the first gear meshes with the gear ring for transmission, a conveying assembly is fixedly mounted on the gear ring, the conveying assembly is used to rotate and convey the multifilament to be tested, and several limiting grooves are provided on the rotating column.

[0016] By adopting the above technical solution, the multifilament is effectively clamped and fixed. Tensile testing of the multifilament is achieved by winding the multifilament around the test assembly and the rotating column, and then adjusting the distance between the test assemblies. After the multifilament roll is installed on the conveying assembly, its ends are clamped and fixed by the clamping assembly. The first motor drives the gear ring to rotate on the support assembly, thereby causing the multifilament roll installed on the conveying assembly to rotate around the axis of the gear ring, allowing the multifilament to sequentially pass over the test assembly and the rotating column. The multifilament is then fixed by re-clamping the clamping assembly. The distance between the two test assemblies is adjusted by the spacing adjustment assembly, thereby increasing the pushing and pulling force on the multifilament, thus enabling tensile testing. This method offers high flexibility, facilitates operation by experimental personnel, greatly reduces the difficulty of repeated winding, improves testing efficiency, and the limiting groove effectively limits the multifilament, preventing slippage and misalignment during testing.

[0017] As an optional solution to the technical solution of this application, the support component includes a support frame, an upper limit block and a lower limit block. The upper limit block and the lower limit block are detachably fixed on the support frame. A gear ring is located between the upper limit block and the lower limit block, and the gear ring is rotatably connected to the upper limit block and the lower limit block respectively. A first motor is mounted on the support frame, and a rotating column is mounted on the support frame.

[0018] By adopting the above technical solution, the rotational stability of the gear ring is effectively guaranteed through the limiting of the upper and lower limit blocks.

[0019] As an optional solution to the technical solution of this application, the adjusting component includes a second motor, a second gear, and a sliding rod. The second motor is fixedly mounted on a support frame, and there are two sliding rods. The sliding rods are slidably disposed on the support frame, and the test component is fixedly disposed at the end between the two sliding rods. The sliding rods are provided with scale lines. The output shaft of the second motor is fixedly connected to a rotating shaft. The rotating shaft passes through the support frame and is connected to the second gear. The rotating shaft is rotatably connected to the support frame. The sliding rods are provided with racks connected to them. The two racks are centrally symmetrical about the axis of the rotating shaft, and the racks mesh with the second gear for transmission.

[0020] By adopting the above technical solution, the scale line can easily record the spacing change value during stretching. The second motor starts and drives the second gear to rotate through the rotating shaft. The second gear meshes with the rack and drives the sliding rod installed on the rack to move in opposite directions, thereby causing the spacing between the two test components to decrease or increase, thus realizing the winding and testing of the multifilament.

[0021] As an optional solution to the technical solution of this application, the test component includes a support plate, pressure sensors, a connecting frame, and support rollers. Several pressure sensors are arranged below the support plate, a connecting frame is arranged below the pressure sensors, and support rollers are arranged below the connecting frame. The cross-sectional area of ​​the support rollers gradually increases from the middle to both ends, and limit plates are provided at both ends of the support rollers.

[0022] By adopting the above technical solution, the support roller ensures that the multifilament winding is in the middle of the support roller, which facilitates the limiting of the multifilament and the testing. By setting the pressure sensor, the change of multifilament tension can be effectively recorded during the tensile test, thereby recording the maximum tensile force of each filament.

[0023] As an optional solution to the technical solution of this application, the clamping assembly includes a telescopic cylinder, a sliding assembly, an electric cylinder, and a moving part. The telescopic cylinder is fixedly installed on the support frame, and the output shaft of the telescopic cylinder is fixedly connected to the sliding assembly. The sliding assembly is slidably connected to the support frame, and the electric cylinder is fixedly installed on the sliding assembly. The output shaft of the electric cylinder is connected to the moving part.

[0024] The sliding assembly includes a sliding frame, a positioning plate, and top blocks. The sliding frame slides on the support frame. The output shaft of the telescopic cylinder is fixedly connected to the sliding frame. The positioning plate is fixedly installed on the sliding frame. The positioning plate has clamping holes and several top blocks. The electric cylinder is installed on the sliding frame.

[0025] The moving part includes a moving plate, a mating plate, and a clamping block. The moving plate is provided with a mating plate, which is slidably fitted with a clamping hole. The output shaft of the electric cylinder passes through the clamping hole and is fixedly connected to the mating plate. The moving plate is provided with several through holes, and a clamping block is slidably installed in the through holes. An elastic element is installed in the through holes, with one end of the elastic element connected to the inner wall of the through hole and the other end connected to the clamping block. An inclined groove is provided on the clamping block, and a wire groove is connected to the through hole.

[0026] As an optional solution to the technical solution in this application, a main air pipe is provided below the sliding frame. The main air pipe is connected to the exhaust device. Several auxiliary air pipes are connected to the main air pipe. The number of auxiliary air pipes corresponds to the number of multifilaments. The auxiliary air pipes are installed below the positioning plate, and the axis of the auxiliary air pipes is between the positioning plate and the mating plate.

[0027] By adopting the above technical solution, the auxiliary air pipe facilitates the hammering and positioning of the multifilament. After the ventilation equipment is started, the end of the multifilament hangs down or swings slightly along the corresponding auxiliary air pipe axis under the action of wind. At this time, the multifilament is between the positioning plate and the mating plate. The electric cylinder drives the mating plate to move and slide into the clamping hole, thereby initially clamping the multifilament. The multifilament is wound around the conveying component. The output shaft of the telescopic cylinder drives the sliding component and the moving part to avoid the rotating conveying component. After the conveying component rotates back to the initial position, the output shaft of the telescopic cylinder pushes the sliding component and the moving part to move, so that the multifilament is stuck into the corresponding wire groove. The output shaft of the electric cylinder returns, driving the mating plate to continue to insert into the clamping hole. At this time, the top block is pressed against the inclined groove, thereby driving the clamping block to slide, thereby clamping the tail end of the multifilament, realizing double-head clamping, effectively reducing the clamping difficulty and improving the clamping and testing efficiency.

[0028] As an optional solution to the technical solution of this application, the conveying assembly includes a fixed plate, a top plate, and positioning blocks. The fixed plate is fixedly installed on the gear ring. Several top plates are slidably arranged on the fixed plate. Rubber plugs are provided on the top plates. Several positioning blocks are rotatably arranged on the fixed plate. Support shafts are provided on the positioning blocks. The ends of the support shafts are provided with mating grooves. The rubber plugs are interference-fitted with the mating grooves.

[0029] By adopting the above technical solution, the rotating positioning block facilitates the insertion of the multifilament roll. The rubber plug and the mating groove are interference-fitted for effective positioning and tightening. When the positioning block is rotated, the multifilament roll is mounted on the support shaft with the thread end of the multifilament roll facing downward. When the positioning block is rotated back, the top plate is slid to insert the rubber plug into the mating groove for positioning, thereby achieving the limited rotation of the multifilament roll.

[0030] This invention provides a method for using an automated adjustable tension multifilament strip tensile testing device, comprising the following steps:

[0031] S1. Rotate the positioning block, and the multifilament roll is mounted on the support shaft. Then rotate the positioning block and slide the top plate to insert the rubber plug into the mating groove for positioning. The ends of the multifilament roll hang down.

[0032] S2. After the exhaust equipment is started, the end of the multifilament hangs down along the corresponding auxiliary air pipe axis under the action of wind. The multifilament is between the positioning plate and the mating plate. The electric cylinder drives the mating plate to move and slide into the clamping hole, thereby initially clamping the multifilament.

[0033] S3. Start the first motor to drive the first gear to rotate. The first gear meshes with the gear ring to drive the gear ring to rotate on the support assembly. This causes the multifilament wire installed on the conveying assembly to rotate around the axis of the gear ring. The multifilament wire passes around the test assembly and the rotating column, and then rotates back to the initial position on the clamping assembly.

[0034] S4. While the multifilament is being conveyed by the conveying component, the output shaft of the telescopic cylinder drives the sliding component and the moving component to avoid the rotating conveying component.

[0035] S5. After the conveying component rotates back to its initial position, the output shaft of the telescopic cylinder pushes the sliding component and the moving part to move, so that the multifilament is inserted into the corresponding wire groove. The electric cylinder is started, and the output shaft of the electric cylinder retracts, driving the mating plate to continue to be inserted into the clamping hole. At this time, the top block is pressed against the inclined groove, thereby driving the clamping block to slide, thereby clamping the tail end of the multifilament.

[0036] S6. Start the second motor, which drives the second gear to rotate through the shaft. The second gear meshes with the rack, which drives the sliding rod mounted on the rack to move in opposite directions, thereby increasing the distance between the two test components and performing a tensile test on the multifilament.

[0037] S7. Record experimental data such as displacement and pressure.

[0038] 3. Beneficial effects

[0039] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0040] 1) This invention supports the multifilament using a testing component, a spacing adjustment component, a rotating column, and a clamping component. After the multifilament roll is installed on the conveying component, its ends are clamped and fixed by the clamping component. A first motor drives a gear ring to rotate on the supporting component, thereby causing the multifilament roll installed on the conveying component to rotate around the axis of the gear ring, so that the multifilament passes over the testing component and the rotating column. The multifilament is then fixed by the clamping component, which is easy to operate and greatly reduces the difficulty of repeated winding by the tester, thus improving the efficiency of the test. At the same time, the spacing between the testing components is adjustable. By increasing the spacing, tensile testing of the multifilament can be performed, which is highly flexible and convenient for the operation of the experimenter.

[0041] 2) This application records the spacing change value during stretching by scale lines, thereby calculating the stretching amount, and sets up a pressure sensor, which can effectively record the change of tensile force of each multifilament during tensile testing, thereby recording the maximum tensile force of each filament.

[0042] 3) This application effectively solves the problem of difficulty in clamping the multifilament due to its light weight by setting an auxiliary gas tube to facilitate the positioning of the multifilament's pendulum. With the two clamping operations of the clamping assembly, the beginning and end of the multifilament are effectively fixed, reducing the clamping difficulty and improving the test efficiency.

[0043] 4) The positioning block of this application is set by rotation to facilitate the insertion of multifilament rolls, and the rubber plug and the mating groove are interference fit to effectively limit the multifilament rolls. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the automated adjustable tension multifilament strip tensile testing device disclosed in a preferred embodiment of this application;

[0045] Figure 2 This is a schematic diagram of the installation structure of the tension adjustment component of the automated adjustable tension multifilament strip tensile testing equipment disclosed in a preferred embodiment of this application;

[0046] Figure 3 An automated adjustable tension multifilament strip tensile testing device disclosed in a preferred embodiment of this application Figure 1 Enlarged structural diagram at point A in the middle;

[0047] Figure 4 This is a schematic diagram of the clamping assembly structure of an automated adjustable tension multifilament strip tensile testing device disclosed in a preferred embodiment of this application.

[0048] Figure 5 This is a schematic diagram of the clamping assembly of an automated adjustable tension multifilament strip tensile testing device disclosed in a preferred embodiment of this application.

[0049] Figure 6 This is a schematic diagram of the moving part of an automated adjustable tension multifilament strip tensile testing device disclosed in a preferred embodiment of this application.

[0050] Figure 7 This is a schematic diagram of the clamping block structure of an automated adjustable tension multifilament strip tensile testing device disclosed in a preferred embodiment of this application.

[0051] Figure 8 This is a schematic diagram of the conveying component structure of an automated adjustable tension multifilament strip tensile testing device disclosed in a preferred embodiment of this application.

[0052] The following are the labeling instructions in the diagram: 1. Support assembly; 2. Adjustment assembly; 3. Test assembly; 4. Clamping assembly; 5. Gear ring; 6. First motor; 7. First gear; 8. Conveying assembly; 9. Rotating column; 11. Support frame; 12. Upper limit block; 13. Lower limit block; 21. Second motor; 24. Sliding rod; 23. Rotating shaft; 22. Second gear; 23. Rotating shaft; 25. Rack; 31. Support plate; 32. Pressure sensor; 33. Connecting frame; 34. Support roller; 35. Limit plate; 41. Telescopic cylinder; 42. Sliding assembly; 43. Electric cylinder; 44. Moving part; 421. Sliding frame; 422. Positioning plate; 423. Clamping hole; 424. Top block; 425. Main air pipe; 426. Auxiliary air pipe; 441. Moving plate; 442. Mating plate; 443. Through hole; 444. Clamping block; 445. Elastic element; 446. Inclined groove; 447. Wire groove; 81. Fixing plate; 82. Top plate; 83. Rubber plug; 84. Positioning block; 85. Support shaft; 91. Limiting groove. Detailed Implementation

[0053] The present application will be further described in detail below with reference to the accompanying drawings.

[0054] Reference Figure 1 This application discloses an automated adjustable tension multifilament strip tensile testing device, including a support component 1, a spacing adjustment component 2, a testing component 3, a clamping component 4, a gear ring 5, a first motor 6, a first gear 7, a conveying component 8, and a rotating column 9.

[0055] Two adjustable components 2 are symmetrically arranged on the support component 1. Test components 3 are provided at the ends of the two adjustable components 2 to form the upper and lower support for testing.

[0056] A clamping component 4 is fixedly mounted on the support component 1, and a toothed ring 5 is rotatably mounted on the support component 1.

[0057] A first motor 6 is fixedly mounted on the support assembly 1, and a first gear 7 is fixedly mounted on the output shaft of the first motor 6. The first gear 7 meshes with the gear ring 5 for transmission.

[0058] A conveying assembly 8 is fixedly installed on the gear ring 5. The conveying assembly 8 is used to rotate and convey the multifilament to be tested.

[0059] A rotating column 9 is rotatably provided on the side of the support assembly 1 away from the clamping assembly 4. The rotating column 9 constitutes the left support for the test. To increase the limiting effect, several limiting grooves 91 are provided on the rotating column 9 to effectively limit the multifilament and prevent slippage during the test.

[0060] After the multifilament roll is installed on the conveying assembly 8, its multifilament ends are clamped and fixed by the clamping assembly 4. The first motor 6 starts and drives the first gear 7 to rotate. The first gear 7 meshes with the gear ring 5, which in turn drives the gear ring 5 to rotate on the support assembly 1. This causes the multifilament roll installed on the conveying assembly 8 to rotate around the axis of the gear ring 5 (counterclockwise), so that the multifilament successively passes over the upper test assembly 3, the rotating column 9, and the lower test assembly 3, and then winds it again onto the clamping assembly 4. The multifilament is fixed by the clamping assembly 4. The distance between the two test assemblies 3 is adjusted by the pitch adjustment assembly 2, thereby increasing the pushing and pulling force on the multifilament, thus performing the tensile test on the multifilament. This method is highly flexible, easy for the testers to operate, greatly reduces the difficulty of repeated winding by the testers, and improves the efficiency of the test.

[0061] It should be noted that after the multifilament passes over the test component 3 on the lower side, the pitch adjustment component 2 begins to increase the spacing, so that the multifilament is gradually in a tensioned state. When clamped for the second time, the multifilament cannot move across the limiting groove 91 in the axial direction of the rotating column 9, thereby achieving preliminary axial limiting and avoiding problems such as multifilament misalignment.

[0062] Reference Figure 1 The support component 1 includes a support frame 11, an upper limit block 12, and a lower limit block 13.

[0063] The support frame 11 is detachably fixed with an upper limit block 12 and a lower limit block 13. The gear ring 5 is rotatably disposed between the upper limit block 12 and the lower limit block 13, and the gear ring 5 is rotatably connected to the upper limit block 12 and the lower limit block 13 respectively. The rotation of the gear ring 5 is ensured by the limiting of the upper limit block 12 and the lower limit block 13. The first motor 6 is mounted on the support frame 11, and the rotating column 9 is rotatably connected to the support frame 11. During the winding process of multifilament, friction can be effectively reduced, which facilitates the winding process.

[0064] Reference Figure 1 and Figure 2 The pitch adjustment assembly 2 includes a second motor 21, a second gear 22, and a sliding rod 24. The second motor 21 is fixedly mounted on the support frame 11. There are two sliding rods 24, which are slidably disposed on the support frame 11. The test assembly 3 is fixedly disposed at the end between the two sliding rods 24. The sliding rods 24 are provided with scale lines for recording the pitch change value during stretching. The output shaft of the second motor 21 is fixedly connected to a rotating shaft 23. The rotating shaft 23 passes through the support frame 11 and is fixedly connected to the second gear 22. The rotating shaft 23 is rotatably connected to the support frame 11. A rack 25 is provided on the sliding rod 24.

[0065] The racks 25 on the two pitch adjustment components 2 are symmetrical about the axis of the rotating shaft 23, and both racks 25 mesh with the second gear 22 for transmission. When the second motor 21 starts, it drives the second gear 22 to rotate through the rotating shaft 23. The second gear 22, through meshing with the racks 25, drives the sliding rods 24 mounted on the racks 25 to move in opposite directions, thereby causing the distance between the two test components 3 to decrease or increase, thus realizing the winding and testing of the multifilament.

[0066] Reference Figure 1 and Figure 3 The test component 3 includes a support plate 31, a pressure sensor 32, a connecting frame 33, and a support roller 34;

[0067] Several pressure sensors 32 are fixedly installed on the support plate 31. A connecting frame 33 is installed below the pressure sensors 32. A support roller 34 is installed below the connecting frame 33. The cross-sectional area of ​​the support roller 34 gradually increases from the middle to both ends to ensure that the multifilament winding is in the middle of the support roller 34, which facilitates the limiting of the multifilament and the testing. Limit plates 35 are installed at both ends of the support roller 34. The support roller 34 can be fixedly connected to the connecting frame 33 or rotatably connected. With the setting of the pressure sensors 32, the change of multifilament tension can be effectively recorded during the tensile test, thereby recording the maximum tensile force of each filament.

[0068] Reference Figures 4 to 7 The clamping assembly 4 includes a telescopic cylinder 41, a sliding assembly 42, an electric cylinder 43, and a moving part 44;

[0069] The telescopic cylinder 41 is fixedly installed on the support frame 11. The output shaft of the telescopic cylinder 41 is fixedly connected to the sliding component 42. The sliding component 42 is slidably connected to the support frame 11. An electric cylinder 43 is fixedly installed on the sliding component 42. The output shaft of the electric cylinder 43 is connected to the moving part 44.

[0070] The sliding assembly 42 includes a sliding frame 421, a positioning plate 422, and a top block 424.

[0071] The sliding frame 421 slides on the support frame 11. The output shaft of the telescopic cylinder 41 is fixedly connected to the sliding frame 421. A positioning plate 422 is fixedly installed on the sliding frame 421. The positioning plate 422 is provided with clamping holes 423. Several top blocks 424 are provided on the positioning plate 422. A main air pipe 425 is provided below the sliding frame 421. The main air pipe 425 is connected to the exhaust equipment. Several auxiliary air pipes 426 are connected to the main air pipe 425. The number of auxiliary air pipes 426 corresponds to the number of multifilaments. The auxiliary air pipes 426 are installed below the positioning plate 422. The electric cylinder 43 is fixedly installed on the sliding frame 421.

[0072] The movable component 44 includes a movable plate 441, a mating plate 442, and a clamping block 444;

[0073] A mating plate 442 is fixedly installed on the movable plate 441. The mating plate 442 is slidably engaged with the clamping hole 423. The output shaft of the electric cylinder 43 passes through the clamping hole 423 and is fixedly connected to the mating plate 442. A plurality of through holes 443 are provided on the movable plate 441. A clamping block 444 is slidably installed in the through holes 443. An elastic element 445 is installed in the through holes 443. One end of the elastic element 445 is connected to the inner wall of the through hole 443, and the other end is connected to the clamping block 444. An inclined groove 446 is provided on the clamping block 444. A wire groove 447 is connected to the through hole 443.

[0074] The axis of the auxiliary air pipe 426 lies between the positioning plate 422 and the mating plate 442, facilitating the positioning of the multifilament by its swing. After the ventilation equipment is started, the end of the multifilament droops or swings slightly along the corresponding axis of the auxiliary air pipe 426 under the action of the wind. At this time, the multifilament is between the positioning plate 422 and the mating plate 442. The electric cylinder 43 drives the mating plate 442 to move and slide into the clamping hole 423 (partial insertion), thereby initially clamping the multifilament. The multifilament is wound around the conveying assembly 8. The output shaft of the telescopic cylinder 41 drives the sliding assembly 422 and... The moving part 44 avoids the rotating conveying component 8. After the conveying component 8 rotates back to its initial position, the output shaft of the telescopic cylinder 41 pushes the sliding component 42 and the moving part 44 to move, so that the multifilament is inserted into the corresponding wire groove 447. The output shaft of the electric cylinder 43 returns, driving the mating plate 442 to continue to be inserted into the clamping hole 423. At this time, the top block 424 is pressed against the inclined groove 446, thereby driving the clamping block 444 to slide, thereby clamping the tail end of the multifilament, realizing double-head clamping, effectively reducing the clamping difficulty and improving the clamping and testing efficiency.

[0075] Reference Figure 1 and Figure 8 The conveying assembly 8 includes a fixed plate 81, a top plate 82, and a positioning block 84;

[0076] A fixed plate 81 is fixedly mounted on a gear ring 5. Several top plates 82 are slidably arranged on the fixed plate 81. Rubber plugs 83 are provided on the top plates 82. Several positioning blocks 84 are rotatably arranged on the fixed plate 81. The rotatable positioning blocks 84 facilitate the insertion of the multifilament roll. A support shaft 85 is provided on the positioning block 84. The end of the support shaft 85 is provided with a mating groove. The rubber plugs 83 are inserted into the mating groove with an interference fit, thereby achieving positioning and tightness. When the positioning block 84 is rotated, the multifilament roll is fitted onto the support shaft 85 with the thread end of the multifilament roll facing downward. When the positioning block 84 is rotated back, the top plates 82 are slid, so that the rubber plugs 83 are inserted into the mating groove for positioning, thereby achieving the limited rotation of the multifilament roll.

[0077] This invention provides a method for using an automated adjustable tension multifilament strip tensile testing device, comprising the following steps:

[0078] S1. Rotate the positioning block 84, and the multifilament roll is mounted on the support shaft 85. Then rotate the positioning block 84, slide the top plate 82, and insert the rubber plug 83 into the mating groove for positioning. The ends of the multifilament roll hang down.

[0079] S2. After the ventilation equipment is started, the end of the multifilament hangs down along the axis of the corresponding auxiliary air pipe 426 under the action of wind force. The multifilament is between the positioning plate 422 and the mating plate 442. The electric cylinder 43 drives the mating plate 442 to move and slide into the clamping hole 423, thereby initially clamping the multifilament.

[0080] S3. Start the first motor 6 to drive the first gear 7 to rotate. The first gear 7 meshes with the gear ring 5 to drive the gear ring 5 to rotate on the support component 1. This causes the multifilament installed on the conveying component 8 to rotate around the axis of the gear ring 5. The multifilament passes through the upper test component 3, the rotating column 9, and the lower test component 3 in sequence, and then rotates back to the initial position on the clamping component 4.

[0081] S4. While the multifilament is being conveyed by the conveying component 8, the output shaft of the telescopic cylinder 41 drives the sliding component 42 and the moving component 44 to avoid the rotating conveying component 8.

[0082] S5. After the conveying component 8 rotates back to its initial position, the output shaft of the telescopic cylinder 41 pushes the sliding component 42 and the moving part 44 to move, so that the multifilament is inserted into the corresponding wire groove 447. The electric cylinder 43 is activated, and the output shaft of the electric cylinder 43 retracts, driving the mating plate 442 to continue to be inserted into the clamping hole 423. At this time, the top block 424 is pressed against the inclined groove 446, thereby driving the clamping block 444 to slide, thereby clamping the tail end of the multifilament.

[0083] S6. Start the second motor 21, which drives the second gear 22 to rotate through the rotating shaft 23. The second gear 22 meshes with the rack 25 to drive the two sliding rods 24 mounted on the rack 25 to move synchronously in opposite directions, thereby increasing the distance between the two test components 3 and performing a tensile test on the multifilament.

[0084] S7. Record experimental data such as displacement and pressure.

[0085] The working principle of the automated adjustable tension multifilament strip tensile testing device of the present invention is as follows:

[0086] First, rotate the positioning block 84, and the multifilament roll is mounted on the support shaft 85. Then, rotate the positioning block 84 and slide the top plate 82 to insert the rubber plug 83 into the mating groove for positioning, causing the multifilament roll's thread end to hang downwards. After the exhaust device is started, the end of the multifilament hangs down along the axis of the corresponding auxiliary air pipe 426 under the action of wind force. The multifilament is between the positioning plate 422 and the mating plate 442. The electric cylinder 43 drives the mating plate 442 to move and slide into the clamping hole 423, thereby initially clamping the multifilament. Then, start the first motor 6 to drive the first gear 7 to rotate. The first gear 7 meshes with the gear ring 5, thereby driving the gear ring 5 to rotate on the support assembly 1, thereby driving the multifilament roll mounted on the conveying assembly 8 to rotate around the axis of the gear ring 5. The multifilament sequentially passes over the upper test assembly 3, the rotating column 9, and the lower test assembly 3, and then rotates back to the initial position on the clamping assembly 4. While component 8 is being conveyed, the output shaft of telescopic cylinder 41 drives sliding component 42 and moving component 44 to avoid the rotating conveying component 8. After the conveying component 8 rotates back to its initial position, the output shaft of telescopic cylinder 41 pushes sliding component 42 and moving component 44 to move, causing the multifilament to be inserted into the corresponding wire groove 447. Electric cylinder 43 is then activated, and its output shaft retracts, causing mating plate 442 to continue to be inserted into clamping hole 423. At this time, top block 424 is pressed against inclined groove 446, thereby causing clamping block 444 to slide, thus clamping the tail end of multifilament. Then, second motor 21 is activated, which drives second gear 22 to rotate through rotating shaft 23. Second gear 22 meshes with rack 25, driving two sliding rods 24 mounted on rack 25 to move synchronously in opposite directions, thereby increasing the distance between the two test components 3 and performing tensile testing on multifilament. Experimental data such as displacement and pressure are recorded.

[0087] This invention supports the multifilaments through a testing component, an adjustable spacing component, a rotating column, and a clamping component, making the installation and fixation of the multifilaments easy and significantly reducing the difficulty of repeated winding for testing personnel, thus improving testing efficiency. Simultaneously, the spacing between the testing components is adjustable; by increasing the spacing, tensile testing of the multifilaments can be performed, offering high flexibility and facilitating operation by the experimenter. The spacing change value during tensile testing is recorded by scale lines, thereby calculating the tensile amount. A pressure sensor is also included to effectively record the change in tensile force of each multifilament during the tensile test, thus recording the maximum tensile force of each filament. The auxiliary air pipe facilitates the positioning of the multifilament's pendulum, effectively solving the problem of difficulty in clamping the lightweight multifilaments. Combined with the two-stage clamping operation of the clamping component, the beginning and end of the multifilaments are effectively fixed, reducing clamping difficulty and improving testing efficiency.

[0088] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated adjustable tension multifilament strip tensile testing device, comprising a support assembly, a tension adjustment assembly, a testing assembly, a clamping assembly, a gear ring, a first motor, a first gear, a conveying assembly, and a rotating column; characterized in that: Two adjustable components are symmetrically arranged on the support component; Each of the two adjustment components is provided with a test component at its end. The adjustment component is used to adjust the distance between the two test components, and the test component is used to adjust the tension of the multifilament and test the tensile force. A clamping component is fixedly installed on the support component. The clamping component is used to clamp and fix the beginning and end of the multifilament. A rotating column is rotatably installed on the side of the support component away from the clamping component. Multifilaments are wound around the test assembly and the rotating column; A gear ring is rotatably mounted on the support assembly, a first motor is fixedly mounted on the support assembly, a first gear is fixedly mounted on the output shaft of the first motor, the first gear meshes with the gear ring for transmission, and a conveying assembly is fixedly mounted on the gear ring for rotating and conveying the multifilament to be tested. The rotating column is provided with several limiting grooves; The clamping assembly includes a telescopic cylinder, a sliding assembly, an electric cylinder, and a moving part. The telescopic cylinder is fixedly mounted on the support frame. The output shaft of the telescopic cylinder is fixedly connected to the sliding assembly. The sliding assembly is slidably connected to the support frame. An electric cylinder is fixedly mounted on the sliding assembly. The output shaft of the electric cylinder is connected to the moving part. The sliding assembly includes a sliding frame, a positioning plate, and top blocks. The sliding frame slides on the support frame. The output shaft of the telescopic cylinder is fixedly connected to the sliding frame. The positioning plate is fixedly installed on the sliding frame. The positioning plate is provided with clamping holes. Several top blocks are provided on the positioning plate. The electric cylinder is installed on the sliding frame. The moving component includes a moving plate, a mating plate, and a clamping block. The moving plate is provided with a mating plate, which is slidably engaged with a clamping hole. The output shaft of the electric cylinder passes through the clamping hole and is fixedly connected to the mating plate. The moving plate is provided with several through holes, and a clamping block is slidably disposed in the through holes. An elastic element is disposed in the through holes, with one end of the elastic element connected to the inner wall of the through hole and the other end connected to the clamping block. An inclined groove is provided on the clamping block, and a wire groove is connected to the through hole.

2. The automated adjustable tension multifilament strip tensile testing device according to claim 1, characterized in that: The support assembly includes a support frame, an upper limit block, and a lower limit block. The upper limit block and the lower limit block are detachably fixed on the support frame, and the gear ring is rotatably disposed between the upper limit block and the lower limit block.

3. The automated adjustable tension multifilament strip tensile testing device according to claim 2, characterized in that: The adjustable component includes a second motor, a second gear, and two sliding rods. The second motor is fixedly mounted on a support frame, and the sliding rods are slidably mounted on the support frame. The test component is fixedly mounted at the end between the two sliding rods. The sliding rods are provided with scale lines. The output shaft of the second motor is fixedly connected to a rotating shaft, and the rotating shaft is fixedly connected to a second gear. The rotating shaft is rotatably connected to the support frame. The sliding rods are provided with racks connected to them. The two racks are centrally symmetrical about the axis of the rotating shaft, and the racks mesh with the second gear for transmission.

4. The automated adjustable tension multifilament strip tensile testing device according to claim 3, characterized in that: The test assembly includes a support plate, pressure sensors, a connecting frame, and support rollers. The support plate is fixedly installed at the end of the sliding rod. Several pressure sensors are fixedly installed below the support plate. A connecting frame is fixedly installed below the pressure sensors. Support rollers are installed below the connecting frame. The cross-sectional area of ​​the support rollers gradually increases from the middle to both ends. Limit plates are provided at both ends of the support rollers.

5. The automated adjustable tension multifilament strip tensile testing device according to claim 4, characterized in that: A main air pipe is provided below the sliding frame. The main air pipe is connected to the exhaust device. Several auxiliary air pipes are connected to the main air pipe. The number of auxiliary air pipes corresponds to the number of multifilaments. The auxiliary air pipes are installed below the positioning plate, and the axis of the auxiliary air pipes is between the positioning plate and the mating plate.

6. The automated adjustable tension multifilament strip tensile testing device according to claim 5, characterized in that: The conveying assembly includes a fixed plate, a top plate, and positioning blocks. One end of the fixed plate is mounted on a gear ring. Several top plates are slidably arranged on the fixed plate, and rubber plugs are provided on the top plates. Several positioning blocks are rotatably arranged on the fixed plate, and support shafts are provided on the positioning blocks. The ends of the support shafts are provided with mating grooves, and the rubber plugs are interference-fitted with the mating grooves.

7. A method of using the automated adjustable tension multifilament strip tensile testing device as described in claim 6, characterized in that, Includes the following steps: S1. Rotate the positioning block, and the multifilament roll is mounted on the support shaft. Then rotate the positioning block and slide the top plate to insert the rubber plug into the mating groove for positioning. The ends of the multifilament roll hang down. S2. Start the exhaust equipment. Under the action of the wind, the end of the multifilament hangs down along the corresponding auxiliary air pipe axis. The multifilament is between the positioning plate and the mating plate. The electric cylinder drives the mating plate to move and slide into the clamping hole, thereby initially clamping the multifilament. S3. Start the first motor to drive the first gear to rotate. The first gear meshes with the gear ring to drive the gear ring to rotate on the support assembly. This causes the multifilament wire installed on the conveying assembly to rotate around the axis of the gear ring. The multifilament wire passes around the test assembly and the rotating column, and then rotates back to the initial position on the clamping assembly. S4. While the multifilament is being conveyed by the conveying component, the output shaft of the telescopic cylinder drives the sliding component and the moving component to avoid the rotating conveying component. S5. After the conveying component rotates back to its initial position, start the telescopic cylinder. The output shaft of the telescopic cylinder pushes the sliding component and the moving part to move, so that the multifilament is inserted into the corresponding wire groove. Start the electric cylinder. The output shaft of the electric cylinder retracts, driving the mating plate to continue to insert into the clamping hole. At this time, the top block is pressed against the inclined groove, thereby driving the clamping block to slide, thereby clamping the tail end of the multifilament. S6. Start the second motor. The second gear is driven to rotate through the shaft. The second gear meshes with the rack and drives the sliding rod mounted on the rack to move in opposite directions, thereby increasing the distance between the two test components and performing a tensile test on the multifilament. S7. Record the experimental data of displacement and pressure.

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