A device for testing the tensile strength of textile fabrics

Abstract

This invention belongs to the field of textile fabric testing technology, and particularly relates to a textile fabric tensile strength testing device, including a frame. A first support column is fixedly connected to one side of the frame, and a second support column is fixedly connected to the other side of the frame. Two third support columns are fixedly installed on the frame, respectively opposite to the first and second support columns. Base plates are rotatably connected between the third and first support columns and between the third and second support columns. A second pressure plate is provided on the base plate near the second support column, and a first pressure plate is provided on the base plate near the first support column. A first clamping mechanism is provided between the two ends of one of the base plates and the first pressure plate. In this device, the two tensile testing directions do not interfere with each other. Tensile testing in one direction can be performed on the surface of the first pressure plate through the third pressure plate, while tensile testing in the other direction can be performed simultaneously on the second pressure plate relative to the first pressure plate.

Description

Technical Field

[0001] This invention belongs to the field of textile fabric testing technology, and in particular relates to a textile fabric tensile strength testing device. Background Technology

[0002] The tensile strength or tensile capacity of textile fabrics refers to the maximum stress a material can withstand under tensile load, usually expressed as the force per unit area (e.g., MPa). In the field of textile fibers, tensile strength testing involves fixing the two ends of a specimen to the clamps of a tensile testing machine, then gradually applying tensile force until the specimen breaks, recording the maximum tensile force and the original cross-sectional area of ​​the specimen during this process, and then calculating the tensile strength value.

[0003] An existing patent (publication number CN118392664B) discloses a textile fabric tensile strength testing device, including a base plate, a support plate fixed on the top of the base plate, an mounting plate fixed on the top of the support plate, a stretching mechanism on the mounting plate for stretching the fabric, and a water tank above the mounting plate, which is fixed to the mounting plate by a pair of support frames.

[0004] As is known from existing technology, when testing the tensile strength of textile fabrics, it is generally possible to test the fabric in only one tensile direction. The fabric needs to be rotated to test the other tensile direction. The staff needs to disassemble the fabric and then reassemble it for testing. Summary of the Invention

[0005] In light of the existing technology, when testing the tensile strength of textile fabrics, it is generally only possible to test the fabric in one tensile direction. The fabric needs to be rotated to test in another tensile direction, and the operator needs to disassemble the fabric and then reassemble it for testing. Therefore, this invention proposes a textile fabric tensile strength testing device.

[0006] The present invention proposes a textile fabric tensile strength testing device, comprising a frame, a first support fixedly connected to one side of the frame, a second support fixedly connected to the other side of the frame, and two third supports fixedly installed on the frame, respectively opposite to the first and second supports. A base plate is rotatably connected between the third and first supports and between the third and second supports. A second pressure plate is provided on the base plate near the second support, and a first pressure plate is provided on the base plate near the first support.

[0007] A first clamping mechanism is provided between the two ends of one of the base plates and the first pressure plate, and a second clamping mechanism is provided between the two ends of the other base plate and the second pressure plate;

[0008] Both the first and second support pillars have a crossbar fixedly connected to their upper ends. A first air cylinder is mounted on the crossbar. The first air cylinder is connected to two pressure shafts. A third pressure plate is rotatably connected to the lower ends of the two pressure shafts. A first spring connects the two third pressure plates.

[0009] Preferably, the first clamping mechanism includes a first U-shaped shaft and a second spring. One end of the first U-shaped shaft is fixedly connected to the end of the base plate, and the other end of the first U-shaped shaft passes through the first pressure plate. The two ends of the second spring are fixedly connected to the inner wall of the first U-shaped shaft and the surface of the first pressure plate, respectively. The second spring is energized.

[0010] Preferably, the second clamping mechanism includes a second U-shaped plate, a second air cylinder, and a second piston shaft. One end of the second U-shaped plate is fixedly connected to the end of the base plate, and the other end of the second U-shaped plate passes through the second pressure plate. The second air cylinder is fixedly installed on the second U-shaped plate, and the second piston shaft is sealed and inserted inside the second air cylinder. The second piston shaft is fixedly connected to the surface of the second pressure plate, and an air pipe is connected to the second air cylinder.

[0011] Preferably, the first air cylinder is fixedly installed on the crossbar, and a first piston shaft is sealed and inserted inside the first air cylinder. A plurality of U-shaped rods are fixedly connected to the upper end of the first piston shaft. The U-shaped rods slide through the crossbar, and the two ends of the U-shaped rods are respectively slidably connected to two pressure shafts by sliders. An air pipe is also connected to the first air cylinder.

[0012] Preferably, the pressure shaft has a groove, the slider has a T-shaped cross-section, the slider is slidably installed in the groove, and the lower end of the U-shaped rod is rotatably connected to the slider.

[0013] Preferably, a first rotating shaft is rotatably mounted on the first support column, the first rotating shaft is fixedly connected to the base plate through a connecting block, a threaded sleeve is threaded onto the first rotating shaft, an opening is provided on the first support column, a hook-shaped shaft is slidably connected to the opening, and one side of the hook-shaped shaft is inserted into the connecting block through two insert shafts.

[0014] Preferably, the second support column is provided with a rotating mechanism, the rotating mechanism including a telescopic cylinder and a rotating plate, a second rotating shaft is rotatably connected to the second support column, the second rotating shaft is fixedly connected to an adjacent base plate, one end of the rotating plate is fixedly connected to the second rotating shaft, and the other end of the rotating plate is rotatably connected to the drive end of the telescopic cylinder.

[0015] Preferably, the second support column is provided with a limiting mechanism that works in conjunction with the rotating mechanism. The limiting mechanism includes an L-shaped shaft and a third spring. One end of the L-shaped shaft is rotatably connected to the second support column, one end of the third spring is fixedly connected to the second support column, and the other end of the third spring is fixedly connected to the other end of the L-shaped shaft. The third spring is energized.

[0016] Preferably, a connecting block is rotatably connected to the end of the rotating plate away from the second rotating shaft, and the driving end of the telescopic cylinder is fixedly connected to the connecting block.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This device tests the bottom plate detection end through a rotating mechanism. During the rotation, the fabric can be directly stretched, thereby performing tensile strength testing on the fabric. The extension and retraction of the telescopic cylinder drives the rotation of the second rotating shaft, which can effectively amplify the path and thus allow for slow testing.

[0019] 2. The two tensile testing directions in this device do not interfere with each other. Tensile testing in one direction can be performed on the surface of the first pressure plate through the third pressure plate, while tensile testing in the other direction can be performed on the second pressure plate relative to the first pressure plate. Tensile testing in a single direction can also be performed solely through the second and first pressure plates. Furthermore, tensile testing in a single direction can be performed simultaneously on the surfaces of the second and first pressure plates through the third pressure plate. Thus, this device can simultaneously test the tensile strength of the fabric in both the warp and weft directions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one side of a textile fabric tensile strength testing device proposed in this invention;

[0021] Figure 2 This is a schematic diagram of the other side of a textile fabric tensile strength testing device proposed in this invention;

[0022] Figure 3 This is a schematic diagram of the rear structure of a textile fabric tensile strength testing device proposed in this invention;

[0023] Figure 4 for Figure 1 A schematic diagram of the planar structure;

[0024] Figure 5 This is a schematic diagram of the installation structure between the base plate, the second pressure plate, and the crossbar.

[0025] Figure 6 This is a schematic diagram of the rotating mechanism;

[0026] Figure 7This is a schematic diagram of the installation structure between the base plate, the first pressure plate, and the crossbar.

[0027] Figure 8 for Figure 7 Enlarged structural diagram at point A;

[0028] Figure 9 A simplified diagram illustrating the winding of the fabric on the base plate, the second pressure plate, and the first pressure plate.

[0029] In the diagram: 1. Frame; 2. Crossbar; 3. Third support column; 4. First support column; 5. Second support column; 6. Base plate; 7. Second pressure plate; 8. First pressure plate; 9. Pressure shaft; 10. First air cylinder; 11. First spring; 12. Telescopic cylinder; 13. L-shaped shaft; 14. First rotating shaft; 15. Threaded sleeve; 16. Second rotating shaft; 17. Pressure plate; 18. Rotating plate; 19. Connecting block; 20. Third spring; 21. Second spring; 22. Hook-shaped shaft; 23. Insert shaft; 24. Connecting block; 25. First piston shaft; 26. Connecting shaft; 27. U-shaped rod; 28. Slider; 29. ​​First U-shaped shaft; 30. Opening; 31. Second U-shaped plate; 32. Second air cylinder; 33. Second piston shaft. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Reference Figures 1-9 A textile fabric tensile strength testing device includes a frame 1, a first support column 4 fixedly connected to one side of the frame 1, a second support column 5 fixedly connected to the other side of the frame 1, and two third supports 3 fixedly installed on the frame 1, which are respectively arranged opposite to the first support column 4 and the second support column 5. A base plate 6 is rotatably connected between the third support column 3 and the first support column 4, and between the third support column 3 and the second support column 5. A second pressure plate 7 is provided on the base plate 6 near the second support column 5, and a first pressure plate 8 is provided on the base plate 6 near the first support column 4.

[0032] A first clamping mechanism is provided between the two ends of one of the base plates 6 and the first pressure plate 8, and a second clamping mechanism is provided between the two ends of the other base plate 6 and the second pressure plate 7.

[0033] The upper ends of the first support column 4 and the second support column 5 are both fixedly connected to a crossbar 2. A first air cylinder 10 is installed on the crossbar 2. The first air cylinder 10 is connected to two pressure shafts 9. The lower ends of the two pressure shafts 9 are rotatably connected to a third pressure plate 17. A first spring 11 is connected between the two third pressure plates 17.

[0034] The first clamping mechanism includes a first U-shaped shaft 29 and a second spring 21. One end of the first U-shaped shaft 29 is fixedly connected to the end of the base plate 6, and the other end of the first U-shaped shaft 29 passes through the first pressure plate 8. The two ends of the second spring 21 are fixedly connected to the inner wall of the first U-shaped shaft 29 and the surface of the first pressure plate 8, respectively. The second spring 21 is energized. When the second spring 21 is energized, it can retract, thereby driving the first pressure plate 8 to move away from the base plate 6, thus creating a larger space between the base plate 6 and the first pressure plate 8. The fabric to be tested is passed through the space between the base plate 6 and the first pressure plate 8. When the second spring 21 is de-energized, it extends, so that the base plate 6 and the first pressure plate 8 can effectively clamp and fix the fabric together.

[0035] The second clamping mechanism includes a second U-shaped plate 31, a second air cylinder 32, and a second piston shaft 33. One end of the second U-shaped plate 31 is fixedly connected to the end of the base plate 6, and the other end of the second U-shaped plate 31 passes through the second pressure plate 7. The second air cylinder 32 is fixedly installed on the second U-shaped plate 31, and the second piston shaft 33 is sealed inside the second air cylinder 32. The second piston shaft 33 is fixedly connected to the surface of the second pressure plate 7, and an air pipe is connected to the second air cylinder 32. When it is necessary to close or open the second pressure plate 7 and the base plate 6, air is inflated or deflated through the air pipe. When inflated, the second air cylinder 32 can be pushed outward, thereby clamping the second pressure plate 7 and the base plate 6 together. Conversely, when deflated, the second piston shaft 33 can be sucked inward, separating the base plate 6 and the second pressure plate 7 for placing fabric.

[0036] The first air cylinder 10 is fixedly installed on the crossbar 2, and a first piston shaft 25 is sealed inside the first air cylinder 10. Multiple U-shaped rods 27 are fixedly connected to the upper end of the first piston shaft 25. The U-shaped rods 27 slide through the crossbar 2, and the two ends of the U-shaped rods 27 are slidably connected to two pressure shafts 9 through sliders 28. An air pipe is also connected to the first air cylinder 10. Air is inflated and deflated into the first air cylinder 10 through the air tube. When inflating, the first piston shaft 25 is pushed upward. The first piston shaft 25 drives the U-shaped rod 27 upward through the connecting shaft 26. The U-shaped rod 27 does not exert downward pressure on the pressure shaft 9. Conversely, when air is evacuated from the first air cylinder 10, the first piston shaft 25, connecting shaft 26, and U-shaped rod 27 are pressed downward, pressing down on the two pressure shafts 9, thereby applying force to the third pressure plate 17. This allows the third pressure plate 17 to press against the fabric surface and constrain it. The first spring 11 connects the two third pressure plates 17. The downward pressure overcomes the elasticity of the first spring 11, allowing the two third pressure plates 17 to move away from each other. During the process of moving away from each other, the fabric can be pulled to both sides to test its strength.

[0037] The pressure shaft 9 has a groove, and the slider 28 has a T-shaped cross-section. The slider 28 is slidably installed in the groove, and the lower end of the U-shaped rod 27 is rotatably connected to the slider 28. The slider 28 is used to connect the U-shaped rod 27 and the pressure shaft 9, so that the U-shaped rod 27 can be slidably connected relative to the pressure shaft 9.

[0038] A first rotating shaft 14 is rotatably mounted on the first support column 4. The first rotating shaft 14 is fixedly connected to the base plate 6 via a connecting block 24. A threaded sleeve 15 is threaded onto the first rotating shaft 14. An opening 30 is provided on the first support column 4, and a hook-shaped shaft 22 is slidably connected to the opening 30. One side of the hook-shaped shaft 22 is inserted into the connecting block 24 via two insert shafts 23. The base plate 6 and the first pressure plate 8 clamp one end of the fabric. Then, by rotating the first rotating shaft 14, the base plate 6 and the first pressure plate 8 are rotated to wrap the fabric around the base plate 6 and the first pressure plate 8. The sliding hook-shaped shaft 22 inserts the insert shafts 23 into the connecting block 24, and the threaded sleeve 15 is rotated to reinforce the angle of the first rotating shaft 14.

[0039] A rotating mechanism is installed on the second support column 5. The rotating mechanism includes a telescopic cylinder 12 and a rotating plate 18. A second rotating shaft 16 is rotatably connected to the second support column 5. The second rotating shaft 16 is fixedly connected to the adjacent base plate 6. One end of the rotating plate 18 is fixedly connected to the second rotating shaft 16, and the other end of the rotating plate 18 is rotatably connected to the drive end of the telescopic cylinder 12. When the drive end of the telescopic cylinder 12 extends or retracts, it can drive the rotating plate 18 to rotate relative to the second rotating shaft 16. In turn, the second rotating shaft 16 can drive the base plate 6 to rotate, continuously winding the fabric to apply force and perform fabric tensile strength testing.

[0040] The second support column 5 is equipped with a limiting mechanism that works in conjunction with the rotating mechanism. The limiting mechanism includes an L-shaped shaft 13 and a third spring 20. One end of the L-shaped shaft 13 is rotatably connected to the second support column 5, and one end of the third spring 20 is fixedly connected to the second support column 5. The other end of the third spring 20 is fixedly connected to the other end of the L-shaped shaft 13. The third spring 20 is energized. When the rotating plate 18 rotates to its highest position, the third spring 20 is energized to contract, thereby pressing against the surface of the rotating plate 18 and pushing it past the highest point.

[0041] A connecting block 19 is rotatably connected to the end of the rotating plate 18 away from the second rotating shaft 16, and the drive end of the telescopic cylinder 12 is fixedly connected to the connecting block 19. The connecting block 19 is used to connect the rotating plate 18 and the telescopic cylinder 12, and the connecting block 19 can easily adapt to changes in angle.

[0042] When testing the tensile strength of textile fabrics, the fabric is divided into a fixed end and a testing end. The fixed end is clamped between the first pressure plate 8 and the base plate 6, and the testing end is clamped between the second pressure plate 7 and the base plate 6. First, the fixed end is defined. The base plate 6 is rotated by the first rotating shaft 14. The fabric is wrapped around the outer surfaces of the base plate 6 and the first pressure plate 8 twice. The hook-shaped shaft 22 slides down along the opening 30, and the insertion shaft 23 is inserted into the connecting block 24. The threaded sleeve 15 is rotated to further reinforce the angle of the first rotating shaft 14. The testing end is clamped between... After the base plate 6 and the second pressure plate 7 are clamped, the fabric passes around the outer surface of the second pressure plate 7 and then passes between the base plate 6 and the second pressure plate 7, thereby limiting the detection end. After the fabric at both the fixed end and the limiting end is fixed, the fabric is pressed and fixed under the third pressure plate 17 above it. The first air cylinder 10 pushes the U-shaped rod 27 downward to press the pressure shaft 9. The two third pressure plates 17 are connected by the first spring 11. The two third pressure plates 17 have a driving force to move closer to each other. Under the action of the driving force, the fabric can be pressed and fixed.

[0043] The base plate 6 is tested by a rotating mechanism. The telescopic cylinder 12 retracts through the drive end. During the retraction process, it drives the rotating plate 18 to rotate around the second rotating shaft 16. When it extends, it can push the rotating plate 18 to rotate upward. When it retracts, it can pull the rotating plate 18 to flip downward. When the rotating plate 18 passes the highest point, the third spring 20 will be energized and retract to pull the L-shaped shaft 13 to rotate. The rotation of the L-shaped shaft 13 will squeeze the rotating plate 18, thereby helping the rotating plate 18 to pass the highest point. The rotation of the base plate 6 is achieved by rotating around the second rotating shaft 16. During the rotation, the fabric can be directly stretched, thereby performing tensile strength testing on the fabric. The extension and retraction of the telescopic cylinder 12 drives the rotation of the second rotating shaft 16, which can effectively amplify the path and thus allow for slow testing. When the rotating mechanism is performing testing, the two upper third pressure plates 17 can move upward adaptively and slide along the edges of the second pressure plate 7 and the base plate 6.

[0044] This device can also simultaneously test the tensile strength of the fabric in another direction. After fixing the fixed end and the testing end of the fabric, air is drawn from the first air cylinder 10. When the first air cylinder 10 is drawn, the connecting shaft 26 is moved downward through the first piston shaft 25. The connecting shaft 26 moves the U-shaped rod 27 downward. The lower end of the U-shaped rod 27 presses down on the two pressure shafts 9, overcoming the elastic force of the first spring 11. During the pressing process, the included angle between the two pressure shafts 9 increases, and the distance between the two connected third pressure plates 17 increases, thereby moving the two third pressure plates 17 to both sides. This device can pull the fabric to both sides to test its tensile strength in another direction. The two tensile test directions do not interfere with each other. Tensile test in one direction can be performed on the surface of the first pressure plate 8 through the third pressure plate 17, while tensile test in another direction can be performed on the second pressure plate 7 relative to the first pressure plate 8. Tensile test in a single direction can also be performed by the second pressure plate 7 and the first pressure plate 8 alone. Tensile test in a single direction can also be performed on the surfaces of the second pressure plate 7 and the first pressure plate 8 simultaneously through the third pressure plate 17. Thus, this device can simultaneously test the tensile strength of the fabric in both warp and weft directions.

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for testing the tensile strength of textile fabrics, characterized in that, The device includes a frame, a first support column is fixedly connected to one side of the frame, a second support column is fixedly connected to the other side of the frame, and two third support columns are fixedly installed on the frame, which are respectively arranged opposite to the first and second support columns. A base plate is rotatably connected between the third and first support columns and between the third and second support columns. A second pressure plate is provided on the base plate near the second support column, and a first pressure plate is provided on the base plate near the first support column. A first clamping mechanism is provided between the two ends of one of the base plates and the first pressure plate, and a second clamping mechanism is provided between the two ends of the other base plate and the second pressure plate; The upper ends of the first and second pillars are both fixedly connected to a crossbar, and a first air cylinder is installed on the crossbar. The first air cylinder is connected to two pressure shafts, and the lower ends of the two pressure shafts are rotatably connected to a third pressure plate. A first spring is connected between the two third pressure plates. The first clamping mechanism includes a first U-shaped shaft and a second spring. One end of the first U-shaped shaft is fixedly connected to the end of the base plate, and the other end of the first U-shaped shaft passes through the first pressure plate. The two ends of the second spring are fixedly connected to the inner wall of the first U-shaped shaft and the surface of the first pressure plate, respectively. The second spring is energized. The second clamping mechanism includes a second U-shaped plate, a second air cylinder, and a second piston shaft. One end of the second U-shaped plate is fixedly connected to the end of the base plate, and the other end of the second U-shaped plate passes through the second pressure plate. The second air cylinder is fixedly installed on the second U-shaped plate, and the second piston shaft is sealed and inserted inside the second air cylinder. The second piston shaft is fixedly connected to the surface of the second pressure plate, and an air pipe is connected to the second air cylinder. The first air cylinder is fixedly installed on the crossbar, and a first piston shaft is sealed and inserted inside the first air cylinder. Multiple U-shaped rods are fixedly connected to the upper end of the first piston shaft. The U-shaped rods slide through the crossbar, and the two ends of the U-shaped rods are respectively slidably connected to two pressure shafts by sliders. An air pipe is also connected to the first air cylinder. A first rotating shaft is rotatably mounted on the first support column. The first rotating shaft is fixedly connected to the base plate through a connecting block. A threaded sleeve is threaded onto the first rotating shaft. An opening is provided on the first support column. A hook-shaped shaft is slidably connected to the opening. One side of the hook-shaped shaft is inserted into the connecting block through two insert shafts. The second support column is equipped with a rotating mechanism, which includes a telescopic cylinder and a rotating plate. A second rotating shaft is rotatably connected to the second support column. The second rotating shaft is fixedly connected to an adjacent base plate. One end of the rotating plate is fixedly connected to the second rotating shaft, and the other end of the rotating plate is rotatably connected to the drive end of the telescopic cylinder. The second support column is provided with a limiting mechanism that works in conjunction with the rotating mechanism. The limiting mechanism includes an L-shaped shaft and a third spring. One end of the L-shaped shaft is rotatably connected to the second support column, one end of the third spring is fixedly connected to the second support column, and the other end of the third spring is fixedly connected to the other end of the L-shaped shaft. The third spring is energized.

2. The textile fabric tensile strength testing device according to claim 1, characterized in that, The pressure shaft has a groove, the slider has a T-shaped cross-section, the slider is slidably installed in the groove, and the lower end of the U-shaped rod is rotatably connected to the slider.

3. The textile fabric tensile strength testing device according to claim 1, characterized in that, The end of the rotating plate away from the second rotating shaft is rotatably connected to a connecting block, and the drive end of the telescopic cylinder is fixedly connected to the connecting block.

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