Fabric tensile test device for textile detection

Abstract

The invention discloses a fabric tensile testing device for textile detection, and relates to the technical field of textile tensile testing, the fabric tensile testing device comprises a processing table, the top of the processing table is provided with a tensile driving part, the execution end of the tensile driving part is fixedly connected with a rectangular frame, and the top of the processing table is fixedly connected with a bottom fixing seat; and the connecting frame is arranged below the rectangular frame, and the bottom of the connecting frame is fixedly connected with a top fixing seat. By arranging the adjusting mechanism, it is ensured that the two sets of adjusting plates are always kept in a vertical state, the gravity center of the movable plate is synchronously adjusted when the movable plate moves, clamping eccentricity and angle deviation are automatically corrected through the structure, and it is ensured that a test piece always bears axial drawing force along the central axis of the test piece; the problems of test data distortion, abnormal fracture of a test piece and the like caused by deviation are solved fundamentally, data invalidation caused by damage of a test material due to placement deviation is reduced, and the accuracy of a test result is further improved.

Description

Technical Field

[0001] This invention relates to the field of textile tensile testing technology, specifically to a fabric tensile testing device for textile testing. Background Technology

[0002] Textiles refer to products made from textile fibers through processing and weaving. They are mainly divided into two categories: woven fabrics and knitted fabrics, and are used in clothing, decoration, and industrial fields. With the advancement of technology, textiles are gradually incorporating innovative technologies such as flexible tactile sensing materials and bio-based fibers, expanding into emerging fields such as smart wearables and electronic skin.

[0003] Tensile strength testing is required during textile production. Rectangular strips of fabric are cut to standard specifications, and the two ends of the strips are clamped and fixed before the tensile test. Currently, the fabric strips are clamped manually, which can easily lead to the strips being tilted, causing the center of gravity to shift during the stretching process, resulting in premature tearing of the strips and ultimately inaccurate test results. To address this issue, we provide a fabric tensile strength testing device for textile testing. Summary of the Invention

[0004] The purpose of this invention is to provide a fabric tensile strength testing device for textile testing, in order to solve the problem that manual placement of fabric strips can easily lead to tilting of the fabric strips, causing the center of gravity to shift during the stretching process, which in turn causes the fabric strips to tear prematurely and ultimately leads to incorrect test results.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fabric tensile strength testing device for textile testing, comprising: a processing table, a tensile drive component mounted on the top of the processing table, a rectangular frame fixedly connected to the execution end of the tensile drive component, and a bottom fixing seat fixedly connected to the top of the processing table; a connecting frame disposed below the rectangular frame, with a top fixing seat fixedly connected to the bottom of the connecting frame; first clamping plates, a set of first clamping plates fixedly connected above the bottom fixing seat and below the top fixing seat via a drive structure, and a test piece disposed between the two sets of first clamping plates; an adjustment mechanism located at both ends of the connecting frame for adjusting the position of the test piece; and an auxiliary unit located at both ends of the top fixing seat for pushing the edge of the test piece toward the center position.

[0006] As a further embodiment of the present invention: the driving structure includes a first motor fixedly connected to one side of the top fixed seat and the bottom fixed seat. The actuating end of the first motor extends through the interior of the top fixed seat and is fixedly connected to a first bidirectional lead screw. The outer wall of the first bidirectional lead screw is provided with a first positive thread and a first negative thread. The outer walls of the first positive thread and the first negative thread are respectively threaded with a first movable slider. The top of the first clamping plate is fixedly connected to two first trapezoidal sliders. The interior of the top fixed seat and the bottom fixed seat is provided with auxiliary grooves that match the first trapezoidal sliders. The first trapezoidal sliders are slidably connected to the top fixed seat and the bottom fixed seat respectively through the auxiliary grooves.

[0007] As a further embodiment of the present invention: the adjustment unit includes an adjustment plate respectively disposed at both ends of the connecting frame, a second motor is fixedly connected to one side of each of the two adjustment plates, the execution end of the second motor passes through the adjustment plate and is fixedly connected to a second bidirectional lead screw, the outer wall of the second bidirectional lead screw is provided with a second positive thread and a second negative thread, the outer walls of the second positive thread and the second negative thread are respectively threaded to a second movable slider, the bottom of the second movable slider is fixedly connected to a second clamping plate, and driving components for driving the adjustment plate to rotate are provided on both sides of the adjustment plate.

[0008] As a further embodiment of the present invention: the driving component includes a fixed plate respectively disposed on both sides of the connecting frame, a first lead screw rotatably connected inside each fixed plate, a second trapezoidal slider threaded to the outer wall of the first lead screw, a bevel gear fixedly connected to one end of the first lead screw through the outside of the fixed plate, a second connecting rod fixedly connected to the top of the top fixed seat, an arc-shaped bevel rack meshing with the bevel gear fixedly connected to one end of the second connecting rod, a moving plate fixedly connected to one side of the second trapezoidal slider, two second shafts rotatably connected inside the moving plate, the two second shafts being symmetrically arranged about the center of the moving plate, and both ends of the two second shafts penetrating to the outside of the moving plate.

[0009] As a further embodiment of the present invention: the driving component further includes a first spur gear fixedly connected to one end of the second shaft, two third connecting rods fixedly connected to one side of the fixed plate, one end of each of the two third connecting rods being fixedly connected to a first spur rack meshing with the first spur gear, a matching groove being provided on the inner side of the moving plate, and the third connecting rods passing through the matching groove, and a rotating seat being fixedly connected to the other end of the second shaft, with a third trapezoidal slider provided on the inner side of the rotating seat, and the two third trapezoidal sliders being fixedly connected to the adjusting plate respectively.

[0010] As a further embodiment of the present invention: the driving component further includes a connecting slide rod slidably connected inside the rectangular frame, one end of the connecting slide rod passing through the outside of the rectangular frame and fixedly connected to the connecting frame, a first shaft being rotatably connected inside the connecting frame, a circular groove being provided on each side of the connecting frame, a spiral spring being installed between the circular groove and the first shaft, both ends of the first shaft passing through the sides of the connecting frame and fixedly connected to the moving plate, and limiting components for limiting the connecting slide rod and the first shaft being respectively provided on the outside of the rectangular frame and the connecting frame.

[0011] As a further embodiment of the present invention: the limiting component includes a first spring installed between the rectangular frame and the connecting frame, and a set of electric push rods are fixedly connected to both ends of the rectangular frame and the connecting frame, with two electric push rods in each set, and the two electric push rods in each set are symmetrically arranged about the center of the rectangular frame and the connecting frame, respectively. The actuating ends of the two electric push rods pass through the interior of the rectangular frame and the connecting frame and are fixedly connected to a limiting clamp.

[0012] As a further embodiment of the present invention: the auxiliary unit includes a second lead screw rotatably connected to the interior of each of the rotating seats, the outer wall of the second lead screw being threadedly connected to the third trapezoidal slider, one end of the second lead screw passing through the outer wall of the rotating seat and fixedly connected to a second spur gear, one end of the rotating seat being fixedly connected to a trapezoidal slide rail, the inner side of the trapezoidal slide rail being slidably connected to a fourth trapezoidal slider, one side of the fourth trapezoidal slider being fixedly connected to a second spur rack meshing with the second spur gear, and the bottom of the second spur rack being provided with an auxiliary component for driving the second spur gear to rotate.

[0013] As a further embodiment of the present invention: the auxiliary component includes two first connecting rods fixedly connected to the bottom of the first clamping plate, one end of the two first connecting rods being fixedly connected to an auxiliary seat, a plurality of auxiliary trapezoidal sliders being slidably connected to the inner side of the auxiliary seat, and a second spring being installed between each auxiliary trapezoidal slider and the auxiliary seat, an auxiliary clamping plate being fixedly connected to one side of the auxiliary trapezoidal slider, a second piston rod being fixedly connected to one end of the auxiliary trapezoidal slider, a plurality of first oil delivery chambers being fixedly connected to one end of the auxiliary seat, and one end of each second piston rod penetrating into the inner side of one of the first oil delivery chambers and being slidably connected to the first oil delivery chamber.

[0014] As a further embodiment of the present invention: the auxiliary component further includes an auxiliary oil delivery channel fixedly connected to one end of the first oil delivery tank. The inner side of the auxiliary oil delivery channel is provided with a through groove matching the number of the first oil delivery tanks. The interior of the first oil delivery tank is connected to the auxiliary oil delivery channel through the through groove. The bottom of the rotating seat is fixedly connected to a second oil delivery tank by a fixing rod. An oil delivery hose is installed between the oil inlet groove of the second oil delivery tank and the oil outlet groove of the auxiliary oil delivery channel. A first piston rod is slidably connected to the inner side of the second oil delivery tank. One end of the first piston rod passes through to the outside of the second oil delivery tank and is fixedly connected to the bottom of the second straight rack.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting an adjustment mechanism, the two sets of adjustment plates are always kept vertical. When the moving plate moves, its own center of gravity is adjusted synchronously. The above structure automatically corrects the clamping eccentricity and angle deviation, ensuring that the test piece always bears axial tensile force along its own central axis. This solves the problems of test data distortion and abnormal breakage of test pieces caused by deviation from the root, reduces the invalid data caused by test material damage due to placement deviation, and thus improves the accuracy of test results. 2. By setting up an auxiliary unit, the upper end of the test piece can be synchronously displaced as the edge line concavities. When the edge line of the test piece is concave, if the auxiliary clamping plate is fixed, the clamping force will be concentrated on the edge where the edge line is not concave (forming "point pressure stress"), which can easily cause tearing or crushing of the clamping end of the test piece, affecting the test results. However, the auxiliary clamping plate moves towards the center as the concavity occurs, and the change of each clamping point drives the synchronous displacement adjustment of the upper end of the test piece as the edge line concavities, avoiding "pre-damage" to the test piece due to concentrated clamping stress, thereby improving the accuracy of the test results. 3. By setting up a driving structure, the lower end of the test piece is placed between the two sets of first clamping plates of the bottom fixed seat. The first motor drives the first bidirectional lead screw to rotate, and the first movable slider drives the two sets of first clamping plates to move relative to each other to clamp the lower end of the test piece. The connecting frame is manually pulled down, and the upper end of the test piece is placed between the two sets of second clamping plates above. The second motor drives the second bidirectional lead screw to rotate, and the second clamping plates clamp the upper end of the test piece. The first clamping plate below the top fixed seat clamps synchronously. The connecting frame is released, so that the connecting frame is reset under the action of the first spring. The electric push rod is started, and the limiting clamping plate is driven to clamp the limiting connecting slide rod and the first shaft rod through the friction groove. The servo motor drives the rectangular frame to move upward, and the tensile test is performed on the test piece, laying the foundation for subsequent tests and improving the practicality of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the lower structure of the rectangular frame of the present invention; Figure 3 This is a cross-sectional view of the rectangular frame and connecting frame of the present invention; Figure 4 This is a schematic diagram of the structure at both ends of the top fixing base of the present invention; Figure 5 This is a schematic diagram of the structure above the top fixing base of the present invention; Figure 6 This is a cross-sectional view of the top fixing seat of the present invention; Figure 7 This is a schematic diagram of the internal structure of the fixing plate of the present invention; Figure 8 This is a schematic diagram of the internal structure of the rotating seat of the present invention; Figure 9 This is a cross-sectional view of the auxiliary support of the present invention.

[0017] In the diagram: 1. Processing table; 2. Test piece; 3. Rectangular frame; 4. Tension drive component; 5. Connecting slide rod; 6. First spring; 7. Connecting frame; 8. Top fixed seat; 9. First motor; 10. First trapezoidal slider; 11. Moving plate; 12. First clamping plate; 13. Bottom fixed seat; 14. First connecting rod; 15. Auxiliary seat; 16. Limiting clamping plate; 17. Circular groove; 18. Spiral spring; 19. Auxiliary trapezoidal slider; 20. Second spring; 21. Fixed plate; 22. Matching groove; 23. First shaft; 24. Second connecting rod; 25. Arc-shaped bevel rack; 26. Bevel gear; 27. Adjusting plate; 28. Oil hose; 29. ​​Second clamping plate 30. Auxiliary clamping plate; 31. First oil tank; 32. Auxiliary oil channel; 33. First spur rack; 34. First spur gear; 35. Third connecting rod; 36. Second motor; 37. Rotating seat; 38. First double-acting lead screw; 39. First moving slider; 40. First lead screw; 41. Second trapezoidal slider; 42. Second shaft; 43. Second moving slider; 44. Second double-acting lead screw; 45. Third trapezoidal slider; 46. Second lead screw; 47. Second spur gear; 48. First piston rod; 49. Trapezoidal slide; 50. Second spur rack; 51. Fourth trapezoidal slider; 52. Second oil tank; 53. Second piston rod; 54. Electric push rod. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] Please see Figures 1-9 This embodiment provides a fabric tensile strength testing device for textile testing, including: a processing table 1, a tensile drive 4 mounted on the top of the processing table 1, a rectangular frame 3 fixedly connected to the execution end of the tensile drive 4, and a bottom fixing seat 13 fixedly connected to the top of the processing table 1; a connecting frame 7 disposed below the rectangular frame 3, with a top fixing seat 8 fixedly connected to the bottom of the connecting frame 7; and first clamping plates 12, with a set of first clamping plates 12 fixedly connected above the bottom fixing seat 13 and below the top fixing seat 8 via a driving structure, and a test piece 2 disposed between the two sets of first clamping plates 12. The driving structure includes a fixed connection to the top fixing seat 8 and the test piece 2. The first motor 9 on one side of the bottom fixed seat 13 has an actuating end that extends through the inside of the top fixed seat 8 and is fixedly connected to a first bidirectional lead screw 38. The outer wall of the first bidirectional lead screw 38 is provided with a first positive thread and a first negative thread. The outer walls of the first positive thread and the first negative thread are respectively threaded to a first movable slider 39. The top of the first clamping plate 12 is fixedly connected to two first trapezoidal sliders 10. The top fixed seat 8 and the bottom fixed seat 13 are provided with auxiliary grooves that match the first trapezoidal sliders 10. The first trapezoidal sliders 10 are slidably connected to the top fixed seat 8 and the bottom fixed seat 13 respectively through the auxiliary grooves. An adjustment mechanism, located at both ends of the connecting frame 7, is used to adjust the position of the test piece 2. The adjustment unit includes an adjustment plate 27 respectively disposed at both ends of the connecting frame 7. A second motor 36 is fixedly connected to one side of each of the two adjustment plates 27. The execution end of the second motor 36 passes through the adjustment plate 27 and is fixedly connected to a second bidirectional lead screw 44. The outer wall of the second bidirectional lead screw 44 is provided with a second positive thread and a second negative thread. A second moving slider 43 is threadedly connected to the outer wall of the second positive thread and the second negative thread, respectively. A second clamping plate 29 is fixedly connected to the bottom of the second moving slider 43. A driving component for driving the adjustment plate 27 to rotate is provided on both sides of the adjustment plate 27. The driving component includes a fixed plate 21 respectively disposed on both sides of the connecting frame 7. A first lead screw 40 is rotatably connected inside each fixed plate 21. A second lead screw 40 is threadedly connected to the outer wall of the first lead screw 40. The trapezoidal slider 41 has a first lead screw 40, one end of which extends through to the outside of the fixed plate 21 and is fixedly connected to a bevel gear 26. A second connecting rod 24 is fixedly connected to the top of the top fixed seat 8. One end of the second connecting rod 24 is fixedly connected to an arc-shaped bevel rack 25 that meshes with the bevel gear 26. A moving plate 11 is fixedly connected to one side of the second trapezoidal slider 41. Two second shafts 42 are rotatably connected inside the moving plate 11, and the two second shafts 42 are symmetrically arranged about the center of the moving plate 11. Both ends of the two second shafts 42 extend through to the outside of the moving plate 11. The driving component also includes a first spur gear 34 fixedly connected to one end of one of the second shafts 42. Two third connecting rods 35 are fixedly connected to one side of the fixed plate 21. One end of each of the two third connecting rods 35 is fixedly connected to a first spur rack 33 that meshes with the first spur gear 34. A matching groove 22 is provided on the inner side of the moving plate 11.Furthermore, the third connecting rod 35 passes through the matching groove 22, and the other end of the second shaft 42 is fixedly connected to a rotating seat 37. A third trapezoidal slider 45 is provided on the inner side of the rotating seat 37. The two third trapezoidal sliders 45 are fixedly connected to the adjusting plate 27 respectively. The driving component also includes a connecting slide rod 5 slidably connected inside the rectangular frame 3. One end of the connecting slide rod 5 extends through to the outside of the rectangular frame 3 and is fixedly connected to the connecting frame 7. The first shaft 23 is rotatably connected inside the connecting frame 7. A circular groove 17 is opened on each side of the connecting frame 7. A spiral spring 18 is installed between the circular groove 17 and the first shaft 23. The two ends of the first shaft 23 are respectively... The rectangular frame 3 and the connecting frame 7 are fixedly connected to the movable plate 11 on both sides. Limiting components for limiting the connecting slide rod 5 and the first shaft rod 23 are respectively provided on the outside of the rectangular frame 3 and the connecting frame 7. The limiting components include a first spring 6 installed between the rectangular frame 3 and the connecting frame 7. A set of electric push rods 54 is fixedly connected to both ends of the rectangular frame 3 and the connecting frame 7. Each set of electric push rods 54 has two rods, and the two electric push rods 54 in each set are symmetrically arranged about the center of the rectangular frame 3 and the connecting frame 7. The actuating ends of the two electric push rods 54 penetrate into the interior of the rectangular frame 3 and the connecting frame 7 and are fixedly connected to limiting clamps 16. The tensile drive component 4 is composed of multiple transmission structures such as a servo motor, a limit frame, a lifting plate, and a tensile tester. The rectangular frame 3 is fixedly connected to the bottom of the tensile tester. Since the tensile drive component 4 is existing technology, it will not be described in detail in this solution. The inner side of the limiting clamp 16 and the outer wall of the connecting slide bar 5 and the first shaft 23 are all provided with friction grooves to increase friction. First, place one end of the test piece 2 between the two sets of first clamping plates 12 of the bottom fixing seat 13. The first motor 9 drives the first bidirectional lead screw 38 to rotate, causing the two first movable sliders 39 to move relative to each other, so that the two sets of first clamping plates 12 clamp the lower end of the test piece 2. Then, manually pull down the connecting frame 7 and place the upper sides of the test piece 2 between the two sets of second clamping plates 29 respectively. The second motor 36 drives the second bidirectional lead screw 44 to rotate, clamping the corresponding parts of the upper end of the test piece 2 through the second clamping plates 29. At the same time, the two sets of first clamping plates 12 below the top fixing seat 8 move in tandem. The upper end of the test piece 2 is clamped and the connecting frame 7 is released. Under the elastic reset action of the first spring 6, it moves upward to reset. When the first spring 6 resets to the initial state, the electric push rod 54 is started. The output end of the electric push rod 54 drives the limiting clamp 16 to move towards the connecting slide rod 5. The friction grooves respectively clamp and limit the connecting slide rod 5 and the first shaft 23. At this time, the servo motor drives the rectangular frame 3 to move upward to perform tensile testing on the test piece 2, laying the foundation for subsequent tensile testing of the test piece 2, thereby improving the overall practicality of the equipment. When test piece 2 is clamped manually, a deviation in the stretching angle is likely to occur. When this deviation occurs, if the left end of test piece 2 is already taut and the right end is slack during the rebound of the top fixing seat 8 driven by the connecting frame 7, the left side of the fixing plate 21 is fixed by the second clamping plate 29. During the resetting process of the connecting frame 7, since the right side of test piece 2 is slack, the connecting frame 7 continues to pull the fixing plate 21 upward through the first shaft 23, causing the fixing plate 21 to rotate counterclockwise on the outer wall of the first shaft 23, thereby further tautening the right end of test piece 2. At the same time, as the fixing plate 21 rotates, the bevel gear 26 meshes with the arc-shaped bevel rack 25, driving the first lead screw 40 to rotate, which in turn drives the second trapezoidal slide... Block 41 and moving plate 11 move to the left synchronously. During the leftward movement of moving plate 11, the first spur gear 34 meshes with the first spur rack 33. The first spur gear 34 drives the second shaft 42 to rotate the rotating seat 37. Then, the third trapezoidal slider 45 drives the two adjusting plates 27 to rotate clockwise, ensuring that the two sets of adjusting plates 27 always remain vertical. When moving plate 11 moves, it adjusts its own center of gravity synchronously. Through the above structure, the clamping eccentricity and angle deviation are automatically corrected, ensuring that the test piece 2 always bears axial tensile force along its own central axis. This solves the problems of test data distortion and abnormal breakage of test piece 2 caused by deviation from the root, reduces the invalid data caused by test material damage due to placement deviation, and thus improves the accuracy of test results. If the right end of test piece 2 is already taut while the left end is slack, the above operation is performed in reverse. After the test is completed, the electric push rod 54 drives the limit clamp 16 to release the connecting slide rod 5 and the first shaft 23. Under the action of the spiral spring 18, the above structure can be driven to return to its original position, thereby improving the overall practicality of the equipment.

[0021] Please see Figures 2-9The auxiliary unit, located at both ends of the top fixed seat 8, is used to push the edge of the test piece 2 towards the center position. The limiting component includes a first spring 6 installed between the rectangular frame 3 and the connecting frame 7. A set of electric push rods 54 is fixedly connected to both ends of the rectangular frame 3 and the connecting frame 7. Each set of electric push rods 54 has two rods, and the two electric push rods 54 in each set are symmetrically arranged about the center of the rectangular frame 3 and the connecting frame 7. The actuating ends of the two electric push rods 54 pass through the interior of the rectangular frame 3 and the connecting frame 7 and are fixedly connected to the limiting clamps 16. The auxiliary unit includes components rotatably connected to each rotating seat 37. A second lead screw 46 is threaded onto the outer wall of the second lead screw 46, and a third trapezoidal slider 45 is threaded onto the outer wall of the rotating seat 37. One end of the second lead screw 46 passes through the outer wall of the rotating seat 37 and is fixedly connected to a second spur gear 47. One end of the rotating seat 37 is fixedly connected to a trapezoidal slide rail 49, and a fourth trapezoidal slider 51 is slidably connected to the inner side of the trapezoidal slide rail 49. A second spur rack 50 that meshes with the second spur gear 47 is fixedly connected to one side of the fourth trapezoidal slider 51. The bottom of the second spur rack 50 is provided with an auxiliary component for driving the second spur gear 47 to rotate. The auxiliary component includes two first connecting rods fixedly connected to the bottom of the first clamping plate 12. 14. One end of each of the two first connecting rods 14 is fixedly connected to an auxiliary seat 15. Multiple auxiliary trapezoidal sliders 19 are slidably connected to the inner side of the auxiliary seat 15, and a second spring 20 is installed between each auxiliary trapezoidal slider 19 and the auxiliary seat 15. An auxiliary clamping plate 30 is fixedly connected to one side of each auxiliary trapezoidal slider 19. A second piston rod 53 is fixedly connected to one end of each auxiliary trapezoidal slider 19. Multiple first oil delivery chambers 31 are fixedly connected to one end of the auxiliary seat 15. One end of each second piston rod 53 passes through the inner side of a first oil delivery chamber 31 and is slidably connected to the first oil delivery chamber 31. The auxiliary components also include a fixed... An auxiliary oil delivery channel 32 is fixedly connected to one end of the first oil delivery tank 31. The inner side of the auxiliary oil delivery channel 32 is provided with a number of through slots matching the number of the first oil delivery tank 31. The interior of the first oil delivery tank 31 is connected to the auxiliary oil delivery channel 32 through the through slots. The bottom of the rotating seat 37 is fixedly connected to the second oil delivery tank 52 by a fixing rod. An oil delivery hose 28 is installed between the oil inlet slot of the second oil delivery tank 52 and the oil outlet slot of the auxiliary oil delivery channel 32. The inner side of the second oil delivery tank 52 is slidably connected to the first piston rod 48. One end of the first piston rod 48 passes through to the outside of the second oil delivery tank 52 and is fixedly connected to the bottom of the second straight rack 50. When the first clamping plate 12 below the top fixing seat 8 clamps the test piece 2, it will simultaneously drive the relative movement of multiple opposing auxiliary seats 15 at the end of the first connecting rod 14, and drive multiple auxiliary clamping plates 30 to perform multi-point clamping on the edge line near the top of the test piece 2. During the stretching process of the test piece 2, if it is stretched and the edge lines on both sides are concave inward, the tensile force generated by the deformation of the edge lines will drive the corresponding auxiliary clamping plate 30 to move towards the center of the test piece 2. At this time, the auxiliary clamping plate 30 drives the auxiliary trapezoidal slider 19 to push the second piston rod 53 to move towards the center of the test piece 2 in the first oil supply chamber 31, so that the oil in the first oil supply chamber 31 is injected into the second oil supply chamber 52 through the auxiliary oil supply channel 32 and the oil supply hose 28, thereby pushing the first piston rod 48 to drive the second straight rack 50 to move upward. The second spur rack 50 drives the second spur gear 47 to rotate, which in turn drives the second lead screw 46 to rotate. This causes the third trapezoidal slider 45 to move the adjusting plate 27 toward the center of the test piece 2. Ultimately, this achieves synchronous displacement adjustment of the upper end of the test piece 2 as the edge line concavities. When the edge line of the test piece 2 is concave, if the auxiliary clamping plate 30 is fixed, the clamping force will be concentrated on the edge where the edge line is not concave (forming "point pressure stress"), which can easily cause tearing or crushing of the clamping end of the test piece 2, affecting the test results. However, the auxiliary clamping plate 30 moves toward the center as the concavity occurs. By changing the position of each clamping point, it drives the synchronous displacement adjustment of the upper end of the test piece 2 as the edge line concavities, avoiding "pre-damage" to the test piece 2 due to concentrated clamping stress, thereby improving the accuracy of the test results. After the test piece 2 is tested, the auxiliary trapezoidal slider 19 is driven to return to its original position by the action of the second spring 20, and at the same time, the second piston rod 53 is driven to return to its original position, so that the above structure returns to its original position, thereby improving the applicability of the equipment.

[0022] 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 fabric tensile strength testing device for textile testing, characterized in that, include: A processing table (1) is provided with a stretching drive (4) installed on its top. A rectangular frame (3) is fixedly connected to the execution end of the stretching drive (4). A bottom fixing seat (13) is fixedly connected to the top of the processing table (1). A connecting frame (7) is provided below the rectangular frame (3), and a top fixing seat (8) is fixedly connected to the bottom of the connecting frame (7). The first clamping plate (12) is fixedly connected to the top of the bottom fixing seat (13) and the bottom fixing seat (8) by a drive structure. A test piece (2) is provided between the two sets of first clamping plates (12). An adjustment mechanism, located at both ends of the connecting frame (7), is used to adjust the position of the test piece (2); The auxiliary unit is located at both ends of the top fixing seat (8) and is used to push the edge of the test piece (2) toward the center position.

2. The fabric tensile strength testing device for textile testing according to claim 1, characterized in that, The drive structure includes a first motor (9) fixedly connected to one side of the top fixed seat (8) and the bottom fixed seat (13). The execution end of the first motor (9) extends through the interior of the top fixed seat (8) and is fixedly connected to a first bidirectional lead screw (38). The outer wall of the first bidirectional lead screw (38) is provided with a first positive thread and a first negative thread. The outer walls of the first positive thread and the first negative thread are respectively threaded with a first movable slider (39). The top of the first clamping plate (12) is fixedly connected to two first trapezoidal sliders (10). The interior of the top fixed seat (8) and the bottom fixed seat (13) is provided with auxiliary grooves that match the first trapezoidal sliders (10). The first trapezoidal sliders (10) are slidably connected to the top fixed seat (8) and the bottom fixed seat (13) through the auxiliary grooves.

3. The fabric tensile strength testing device for textile testing according to claim 2, characterized in that, The adjustment unit includes an adjustment plate (27) respectively disposed at both ends of the connecting frame (7). A second motor (36) is fixedly connected to one side of each of the two adjustment plates (27). The execution end of the second motor (36) passes through the adjustment plate (27) and is fixedly connected to a second bidirectional lead screw (44). The outer wall of the second bidirectional lead screw (44) is provided with a second positive thread and a second negative thread. The outer walls of the second positive thread and the second negative thread are respectively threaded to a second movable slider (43). The bottom of the second movable slider (43) is fixedly connected to a second clamping plate (29). The two sides of the adjustment plate (27) are provided with driving components for driving the adjustment plate (27) to rotate.

4. The fabric tensile strength testing device for textile testing according to claim 3, characterized in that, The driving component includes a fixed plate (21) respectively disposed on both sides of the connecting frame (7). A first lead screw (40) is rotatably connected inside each fixed plate (21). A second trapezoidal slider (41) is threadedly connected to the outer wall of the first lead screw (40). One end of the first lead screw (40) passes through the outside of the fixed plate (21) and is fixedly connected to a bevel gear (26). A second connecting rod (24) is fixedly connected to the top of the top fixed seat (8). An arc-shaped bevel rack (25) that meshes with the bevel gear (26) is fixedly connected to one end of the second connecting rod (24). A moving plate (11) is fixedly connected to one side of the second trapezoidal slider (41). Two second shafts (42) are rotatably connected inside the moving plate (11). The two second shafts (42) are symmetrically arranged about the center of the moving plate (11), and both ends of the two second shafts (42) pass through the outside of the moving plate (11).

5. The fabric tensile strength testing device for textile testing according to claim 4, characterized in that, The driving component also includes a first spur gear (34) fixedly connected to one end of the second shaft (42). Two third connecting rods (35) are fixedly connected to one side of the fixed plate (21). One end of each of the two third connecting rods (35) is fixedly connected to a first spur rack (33) that meshes with the first spur gear (34). A matching groove (22) is provided on the inner side of the moving plate (11), and the third connecting rod (35) passes through the matching groove (22). A rotating seat (37) is fixedly connected to the other end of the second shaft (42). A third trapezoidal slider (45) is provided on the inner side of the rotating seat (37). The two third trapezoidal sliders (45) are fixedly connected to the adjusting plate (27).

6. The fabric tensile strength testing device for textile testing according to claim 4, characterized in that, The driving component also includes a connecting slide rod (5) slidably connected inside the rectangular frame (3). One end of the connecting slide rod (5) extends through the outside of the rectangular frame (3) and is fixedly connected to the connecting frame (7). A first shaft (23) is rotatably connected inside the connecting frame (7). A circular groove (17) is opened on each side of the connecting frame (7). A spiral spring (18) is installed between the circular groove (17) and the first shaft (23). Both ends of the first shaft (23) extend through the two sides of the connecting frame (7) and are fixedly connected to the moving plate (11). Limiting components for limiting the connecting slide rod (5) and the first shaft (23) are respectively provided on the outside of the rectangular frame (3) and the connecting frame (7).

7. The fabric tensile strength testing device for textile testing according to claim 6, characterized in that, The limiting component includes a first spring (6) installed between the rectangular frame (3) and the connecting frame (7). A set of electric push rods (54) are fixedly connected to both ends of the rectangular frame (3) and the connecting frame (7). There are two electric push rods (54) in each set, and the two electric push rods (54) in each set are symmetrically arranged about the center of the rectangular frame (3) and the connecting frame (7). The execution ends of the two electric push rods (54) pass through the interior of the rectangular frame (3) and the connecting frame (7) and are fixedly connected to a limiting clamp (16).

8. The fabric tensile strength testing device for textile testing according to claim 5, characterized in that, The auxiliary unit includes a second lead screw (46) rotatably connected inside each of the rotating seats (37). The outer wall of the second lead screw (46) is threadedly connected to the third trapezoidal slider (45). One end of the second lead screw (46) passes through the outer wall of the rotating seat (37) and is fixedly connected to a second spur gear (47). One end of the rotating seat (37) is fixedly connected to a trapezoidal slide (49). The inner side of the trapezoidal slide (49) is slidably connected to a fourth trapezoidal slider (51). One side of the fourth trapezoidal slider (51) is fixedly connected to a second spur rack (50) that meshes with the second spur gear (47). The bottom of the second spur rack (50) is provided with an auxiliary component for driving the second spur gear (47) to rotate.

9. A fabric tensile strength testing device for textile testing according to claim 8, characterized in that, The auxiliary component includes two first connecting rods (14) fixedly connected to the bottom of the first clamping plate (12). One end of the two first connecting rods (14) is fixedly connected to an auxiliary seat (15). Multiple auxiliary trapezoidal sliders (19) are slidably connected to the inner side of the auxiliary seat (15). Each auxiliary trapezoidal slider (19) is connected to a second spring (20) between it and the auxiliary seat (15). One side of the auxiliary trapezoidal slider (19) is fixedly connected to an auxiliary clamping plate (30). One end of the auxiliary trapezoidal slider (19) is fixedly connected to a second piston rod (53). One end of the auxiliary seat (15) is fixedly connected to multiple first oil tanks (31). One end of each second piston rod (53) passes through the inner side of one of the first oil tanks (31) and is slidably connected to the first oil tank (31).

10. A fabric tensile strength testing device for textile testing according to claim 9, characterized in that, The auxiliary component also includes an auxiliary oil delivery channel (32) fixedly connected to one end of the first oil delivery tank (31). The inner side of the auxiliary oil delivery channel (32) is provided with a through groove matching the number of the first oil delivery tanks (31). The interior of the first oil delivery tank (31) is connected to the auxiliary oil delivery channel (32) through the through groove. The bottom of the rotating seat (37) is fixedly connected to the second oil delivery tank (52) by a fixing rod. An oil delivery hose (28) is installed between the oil inlet groove of the second oil delivery tank (52) and the oil outlet groove of the auxiliary oil delivery channel (32). The inner side of the second oil delivery tank (52) is slidably connected to the first piston rod (48). One end of the first piston rod (48) passes through to the outside of the second oil delivery tank (52) and is fixedly connected to the bottom of the second straight rack (50).

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