A textile tensile strength testing device

Abstract

The application belongs to the technical field of textile testing, and particularly relates to a textile tensile strength testing device, which comprises a base, support columns fixedly arranged at the top of the base, a same testing table fixedly arranged at the upper end of the four support columns, a tray fixedly arranged at the center of the upper surface of the testing table, a supporting frame arranged at the periphery of the tray, a plurality of supporting rods fixedly arranged between the inner side wall of the supporting frame and the circumferential wall of the tray, a pressing mechanism arranged on the upper surface of the testing table and matched with the tray, a fan-shaped opening arranged on the upper surface of the testing table and located at one side of the tray, and a warp positioning and detecting mechanism arranged in the pressing mechanism. The application can complete accurate tensile testing of the warp, 45-degree oblique and weft directions of the textile, and has the advantages of accurate positioning, stable detection and high efficiency, and can comprehensively reflect the real mechanical properties of the textile.

Description

Technical Field

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

[0002] In the production, processing and application of textiles, tensile strength is one of the core indicators for measuring their quality stability and reliability. It directly affects the service life and safety performance of textiles in various scenarios such as clothing making, industrial filtration, and home decoration. The tensile strength testing of textiles has become a key link in production quality inspection, product development and industry quality control, such as the textile tensile strength testing device disclosed in announcement number CN117147325B.

[0003] During the weaving process, warp yarns bear continuous tension from the weaving equipment and often bear the main stress in subsequent use, while weft yarns mainly interweave laterally. Their stress characteristics differ significantly from those of the warp. Furthermore, due to the unique interlacing structure of the warp and weft yarns, the 45° diagonal direction is prone to relative yarn slippage under stress, resulting in inherent differences in tensile strength across the three directions. However, existing textile tensile strength testing devices often fail to clearly distinguish between the warp, weft, and 45° directions in practical applications. They typically select only a single direction or a random direction for testing, ignoring the essential differences in strength characteristics across these directions. This testing method cannot comprehensively and accurately reflect the true tensile performance of textiles, leading to test results lacking specificity and reference value. Consequently, it affects the design selection, safety of use, and accuracy of quality assessment for downstream products.

[0004] To address this, a device for testing the tensile strength of textiles is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a device for testing the tensile strength of textiles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a textile tensile strength testing device, comprising a base, wherein support columns are fixedly provided at the four corners of the top of the base, and the upper ends of the four support columns are fixedly provided with the same testing platform, and further comprising: A tray is fixedly installed at the center of the upper surface of the test bench. The tray is surrounded by a support frame. Multiple evenly distributed support rods are fixed between the inner side wall of the support frame and the circumferential wall of the tray. The upper surface of the test bench is provided with a pressing mechanism that cooperates with the tray. A fan-shaped opening is opened on the upper surface of the test bench and on one side of the tray. A warp positioning detection mechanism is installed inside the pressing mechanism, and the warp positioning detection mechanism is used to detect the warp threads on the surface of the textile between the tray and the pressing mechanism; A vacuuming mechanism is disposed on top of the pressing mechanism, and the suction end of the vacuuming mechanism extends to one side of the radial positioning detection mechanism; A rotating mechanism is disposed between the base and the test platform. A tensile testing mechanism is provided on one side of the rotating mechanism, and the clamping end of the tensile testing mechanism extends into the interior of the fan-shaped opening. A distance detection mechanism is disposed on the side wall of the tensile testing mechanism, and the distance detection mechanism is used to detect the elongation of the textile. The controller is fixedly installed at one corner of the upper surface of the test platform. The clamping mechanism, the radial positioning detection mechanism, the dust suction mechanism, the rotating mechanism, the tensile testing mechanism, and the distance detection mechanism are all electrically connected to the controller.

[0007] Preferably, the clamping mechanism includes an L-shaped support rod fixedly disposed on the upper surface of the test platform, a first electric push rod fixedly disposed on the top of the L-shaped support rod, a pressure sensor fixedly disposed on the moving end of the first electric push rod, a U-shaped connecting plate fixedly disposed on the detection end of the pressure sensor, and a pressure plate fixedly disposed on the bottom of the U-shaped connecting plate.

[0008] Preferably, the radial positioning detection mechanism includes a strip-shaped detection groove disposed on the lower surface of the pressure plate, a mounting plate fixedly disposed on the top of the strip-shaped detection groove, a laser positioning instrument fixedly disposed on the lower surface of the mounting plate, and convex lenses fixedly embedded on both sides of the upper surface of the mounting plate.

[0009] Preferably, the vacuuming mechanism includes a vacuum cleaner fixedly mounted on the top of the L-shaped support rod, and a vacuum tube is fixedly mounted on the suction end of the vacuum cleaner, with one end of the vacuum tube away from the vacuum cleaner extending to one side of the strip-shaped detection groove.

[0010] Preferably, the rotating mechanism includes a first motor fixedly disposed at the center of the top of the base, the output end of the first motor is fixedly provided with a rotating shaft, and the shaft wall of the rotating shaft is fixedly provided with a fixing rod.

[0011] Preferably, the tensile testing mechanism includes a slide rail fixedly disposed at the end of the fixed rod, a slider is provided inside the slide rail, a second motor is fixedly disposed on one side of the slide rail, a screw threadedly connected to the slider is rotatably disposed inside the slide rail, one end of the screw is fixedly connected to the output end of the second motor, a pulling plate is fixedly disposed on the top of the slider, a tension sensor is fixedly disposed on the upper side wall of the pulling plate, a U-shaped support plate is fixedly disposed on the detection end of the tension sensor, a second electric push rod is fixedly disposed on the top of the U-shaped support plate, and the moving end of the second electric push rod extends into the interior of the U-shaped support plate and is fixedly disposed on a clamping plate.

[0012] Preferably, the distance detection mechanism includes a detection chamber fixedly disposed on the side wall of the slide rail, a resistance rod fixedly disposed inside the detection chamber, an insulating block slidably disposed inside the detection chamber, a conductive ring slidably connected to the resistance rod fixedly disposed inside the insulating block, and an L-shaped connecting rod fixedly disposed on the top of the insulating block and fixedly connected to the side wall of the pull plate.

[0013] Preferably, an infrared sensor is fixedly provided at the bottom of the slide rail, and three reflectors are fixedly provided at the top of the base and below the fan-shaped opening, with the three reflectors distributed in an arc shape with the first motor as the center.

[0014] Compared with existing technologies, the advantages of this invention are as follows: 1. Through the set clamping mechanism, warp positioning detection mechanism, and dust collection mechanism, the middle of the textile sample can be stably and constantly clamped, avoiding displacement, wrinkling, or deformation of the sample during positioning and testing. At the same time, it can accurately detect and calibrate the parallelism of the warp lines of the textile, ensuring that the sample is always positioned and clamped in the correct direction, thus improving the accuracy and consistency of tensile strength testing from the source. In addition, fiber debris, lint, dust, and other impurities in the detection area can be removed before laser parallelism detection to avoid impurities interfering with the laser beam, further ensuring the warp positioning accuracy.

[0015] 2. Through the set rotation mechanism, in conjunction with the infrared sensor and reflector for precise angle positioning, the tensile strength testing mechanism can be switched to three testing positions: warp, 45° oblique, and weft. Without the need to repeatedly disassemble and assemble the sample or change the fixture, multi-directional tensile strength testing can be completed in one go, greatly improving testing efficiency and comprehensively reflecting the mechanical properties of textiles in all directions.

[0016] 3. Through the set distance detection mechanism, a sliding fit structure of resistance rod and conductive ring is adopted. Based on the proportional relationship between current change and displacement, the elongation of textiles during the stretching process can be detected in real time and accurately. Stable measurement of deformation distance can be achieved without complex optical components. The measurement response is fast, the anti-interference ability is strong, and the data is reliable. It can completely obtain the dual core indicators of strength and elongation. Attached Figure Description

[0017] Figure 1 This is a first-view perspective perspective view of a textile tensile strength testing device provided by the present invention; Figure 2 This is a second-view perspective perspective view of a textile tensile strength testing device provided by the present invention; Figure 3 This is a perspective view of the clamping mechanism in a textile tensile strength testing device provided by the present invention; Figure 4 This is a perspective view of the pressure plate and dust collection mechanism in a textile tensile strength testing device provided by the present invention. Figure 5 This is a perspective view of the base top rotation mechanism and the tensile testing mechanism in a textile tensile strength testing device provided by the present invention. Figure 6 This is a perspective view of the slide rail interior and distance detection mechanism in a textile tensile strength testing device provided by the present invention.

[0018] In the diagram: 1. Base, 2. Support column, 3. Test platform, 4. Tray, 5. Support frame, 6. Support rod, 7. Clamping mechanism, 71. L-shaped support rod, 72. First electric push rod, 73. Pressure sensor, 74. U-shaped connecting plate, 75. Pressure plate, 8. Fan-shaped opening, 9. Meridional positioning detection mechanism, 91. Strip detection groove, 92. Mounting plate, 93. Laser positioning instrument, 94. Convex lens, 10. Dust collection mechanism, 101. Dust collector, 102. Dust collection pipe, 11. Rotation mechanism, 111. First motor, 1 12 Rotating shaft, 113 Fixed rod, 12 Tensile testing mechanism, 121 Slide rail, 122 Slider, 123 Second motor, 124 Screw, 125 Pulling plate, 126 Tensile sensor, 127 U-shaped support plate, 128 Second electric push rod, 129 Clamping plate, 13 Distance detection mechanism, 131 Detection chamber, 132 Resistance rod, 133 Insulating block, 134 Conductive ring, 135 L-shaped connecting rod, 14 Controller, 15 Infrared sensor, 16 Reflector. Detailed Implementation

[0019] 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.

[0020] like Figures 1-6 As shown, a textile tensile strength testing device includes a base 1, with support columns 2 fixedly installed at the four corners of the top of the base 1, and a common testing platform 3 fixedly installed at the upper ends of the four support columns 2. The device also includes: A tray 4 is fixedly installed at the center of the upper surface of the test bench 3. A support frame 5 is provided around the tray 4. Multiple evenly distributed support rods 6 are fixed between the inner side wall of the support frame 5 and the circumferential wall of the tray 4. The tray 4 and the support frame 5 can stably lift the textile. A pressing mechanism 7 that cooperates with the tray 4 is provided on the upper surface of the test bench 3. A fan-shaped opening 8 is opened on the upper surface of the test bench 3 and on one side of the tray 4. The pressing mechanism 7 includes an L-shaped support rod 71 fixedly installed on the upper surface of the test bench 3. A first electric push rod 72 is fixedly installed at the top of the L-shaped support rod 71. A pressure sensor 73 is fixedly installed at the moving end of the first electric push rod 72. A U-shaped connecting plate 74 is fixedly installed at the detection end of the pressure sensor 73. A pressure plate 75 is fixedly installed at the bottom of the U-shaped connecting plate 74. By making the lower surface of the pressure plate 75 rough, the contact friction between the lower surface of the pressure plate 75 and the textile is increased, and the relative slippage of the textile is prevented during the tensile test.

[0021] The warp positioning detection mechanism 9 is located inside the pressing mechanism 7 and is used to detect the warp lines on the surface of the textile between the tray 4 and the pressing mechanism 7. The warp positioning detection mechanism 9 includes a strip-shaped detection groove 91 located on the lower surface of the pressing plate 75. A mounting plate 92 is fixedly installed on the top of the strip-shaped detection groove 91. A laser positioning device 93 is fixedly installed on the lower surface of the mounting plate 92. Convex lenses 94 are fixedly embedded on both sides of the upper surface of the mounting plate 92. When the laser positioning device 93 is activated, it emits a straight laser beam and illuminates the surface of the textile. The operator can observe the magnified laser beam through the convex lens 94 to determine whether the beam is parallel to the warp lines of the textile, ensuring that the textile is accurately positioned and pressed.

[0022] The vacuuming mechanism 10 is located on top of the pressing mechanism 7, and the suction end of the vacuuming mechanism 10 extends to one side of the radial positioning detection mechanism 9. The vacuuming mechanism 10 includes a vacuum cleaner 101 fixedly mounted on the top of the L-shaped support rod 71. The suction end of the vacuum cleaner 101 is fixedly provided with a vacuum tube 102. The end of the vacuum tube 102 away from the vacuum cleaner 101 extends to one side of the strip detection groove 91. The vacuum tube 102 is made of rubber hose to prevent the vacuum tube 102 from being damaged by external force and to extend the service life of the vacuum tube 102.

[0023] A rotating mechanism 11 is disposed between the base 1 and the test platform 3. The rotating mechanism 11 includes a first motor 111 fixedly disposed at the center of the top of the base 1. A rotating shaft 112 is fixedly disposed at the output end of the first motor 111. A fixing rod 113 is fixedly disposed on the shaft wall of the rotating shaft 112. The first motor 111 is a self-locking motor. When the first motor 111 is not running, it can lock the rotating shaft 112, increasing the stability of the fixing rod 113. A tensile testing mechanism 12 is disposed on one side of the rotating mechanism 11. The clamping end of the tensile testing mechanism 12 extends into the interior of the fan-shaped opening 8. The tensile testing mechanism 12 includes a slide rail 121 fixedly disposed at the end of the fixing rod 113. A slider 122 is disposed inside the slide rail 121. A second motor 123 is fixedly disposed on one side of the slide rail 121. A screw 124 is rotatably disposed inside the slide rail 121 and threadedly connected to the slider 122. One end of the screw 124 is fixedly connected to the output end of the second motor 123. A pull plate 125 is fixedly installed on the top of the slider 122. A tension sensor 126 is fixedly installed on the upper side wall of the pull plate 125. A U-shaped support plate 127 is fixedly installed at the detection end of the tension sensor 126. A second electric push rod 128 is fixedly installed on the top of the U-shaped support plate 127. The moving end of the second electric push rod 128 extends into the interior of the U-shaped support plate 127 and is fixedly installed with a clamping plate 129. By making the lower surface of the clamping plate 129 frosted, the contact friction between the clamping plate 129 and the textile is increased, and slippage during clamping is avoided. An infrared sensor 15 is fixedly installed at the bottom of the slide rail 121. Three reflectors 16 are fixedly installed on the top of the base 1 and below the fan-shaped opening 8. The three reflectors 16 are distributed in an arc with the first motor 111 as the center. The included angle between any two adjacent reflectors 16 is 45°. Through the cooperation of the infrared sensor 15 and the reflectors 16, the angle of movement of the slide rail 121 can be precisely controlled.

[0024] The distance detection mechanism 13 is disposed on the side wall of the tensile testing mechanism 12, and is used to detect the elongation of textiles. The distance detection mechanism 13 includes a detection chamber 131 fixedly disposed on the side wall of the slide rail 121. A resistance rod 132 is fixedly disposed inside the detection chamber 131. An insulating block 133 is slidably disposed inside the detection chamber 131. A conductive ring 134 slidably connected to the resistance rod 132 is fixedly disposed inside the insulating block 133. The top of the insulating block 133 is fixedly disposed on the side wall of the pull plate 125. The L-shaped connecting rod 135 is connected to the moving plate 125, which moves the L-shaped connecting rod 135 synchronously. The L-shaped connecting rod 135 then moves the insulating block 133 smoothly within the detection chamber 131. The insulating block 133 has a conductive ring 134 inside. The conductive ring 134 slides along the resistor rod 132 with the insulating block 133, so that the effective length of the resistor rod 132 connected to the circuit changes with the displacement, thereby causing a corresponding change in the electrical signal. The displacement change during the textile testing process is detected based on the change in the electrical signal.

[0025] The controller 14 is fixedly installed on one corner of the upper surface of the test bench 3. The clamping mechanism 7, the longitudinal positioning detection mechanism 9, the dust suction mechanism 10, the rotation mechanism 11, the tensile testing mechanism 12 and the distance detection mechanism 13 are all electrically connected to the controller 14.

[0026] The operating principle of this invention is described as follows: First, the operator takes a sample of the textile. When taking the sample, it is necessary to clearly distinguish between the warp and weft directions and select a square sample for later use. After the sampling is completed, the textile sample is placed on the upper surface of the tray 4 and the frame 5. The sample is initially positioned by using the shape of the frame 5. Then, the operator starts the first electric push rod 72 through the controller 14. When its moving end extends, it drives the pressure plate 75 to move down until it contacts the tray 4, realizing the pressing operation of the middle part of the textile. During this process, the pressure sensor 73 detects the squeezing force between the pressure plate 75 and the tray 4 in real time and transmits the detection signal to the controller 14. The controller 14 adjusts the extension amount of the first electric push rod 72 according to the signal to ensure that the textile is firmly pressed and positioned, while avoiding deformation of the warp and weft lines of the textile due to excessive pressure, thus ensuring the accuracy of subsequent tensile strength testing. After the pre-pressing operation is completed, the vacuum cleaner 101 is started by the controller 14. The vacuum cleaner 101 thoroughly removes textile fiber debris, lint, residual scraps from sampling, dust, and environmental floating impurities from the strip detection groove 91 through the suction pipe 102, creating a clean environment for subsequent testing and preventing impurities from obstructing or interfering with the laser beam and affecting the parallelism judgment. Then, the controller 14 starts the laser positioning device 93, which emits a straight laser beam and illuminates the surface of the textile. At this time, the staff can observe the magnified laser beam through the convex lens 94 to determine whether the beam is parallel to the warp line of the textile. If it is not parallel, the staff controls the first electric push rod 72 to retract through the controller 14, so that the pressure plate 75 is separated from the tray 4, and the placement of the textile is readjusted until the beam is observed to be completely parallel to the warp line. After confirming parallelism, the pressing and positioning operation of the textile is completed. The operator starts the second motor 123 through the controller 14. The second motor 123 drives the screw 124 to rotate, which drives the slider 122 to move in the slide rail 121. At the same time, it drives the U-shaped support plate 127 to move closer to the textile until one side edge of the textile moves into the U-shaped support plate 127. Then, the operator starts the second electric push rod 128 through the controller 14. Its moving end drives the clamping plate 129 to move down, pressing and fixing the edge of the textile on that side. Since the initial position of the U-shaped support plate 127 is consistent with the warp direction of the textile, the warp tensile test can be carried out directly. After the above-mentioned pressing operation is completed, the operator restarts the second motor 123 in reverse through the controller 14. The second motor 123 drives the screw 124 to rotate, which drives the slider 122 to move within the slide rail 121. This causes the U-shaped support plate 127 and the clamping plate 129 to apply a warp tension to the edge of the textile. During this process, the tension sensor 126 between the pulling plate 125 and the U-shaped support plate 127 detects the tension in real time and transmits the detection signal to the controller 14. This continues until the textile is pulled to the point of breakage and the tension value at this time is recorded. This completes the warp tensile strength test of the textile. (When the textile is pulled to the point of breakage, the value detected by the tension sensor 126 drops sharply. At this time, the controller 14 immediately stops the second motor 123 to prevent the U-shaped support plate 127 and the clamping plate 129 from moving continuously.) During the longitudinal tensile test, the pull plate 125 at the top of the slider 122 synchronously drives the L-shaped connecting rod 135 to move. The L-shaped connecting rod 135 then drives the insulating block 133 to move smoothly within the testing chamber 131. The insulating block 133 has a conductive ring 134 inside. The conductive ring 134 slides along the resistance rod 132 with the insulating block 133, causing the effective length of the resistance rod 132 connected to the circuit to change with displacement. After the resistance rod 132 and the conductive ring 134 are connected to the measuring circuit, according to Ohm's law, the electrical... The current in the circuit changes accordingly with the change of the connected resistance. After the current signal is amplified and filtered, it is transmitted to the controller 14. The current change amplitude is proportional to the moving distance of the slider 122 and the pulling plate 125 (for example, when the slider 122 moves the pulling plate 125 by 5mm, the circuit current increases from the initial 10mA to 15mA, and when the moving distance reaches 10mm, the current increases to 20mA simultaneously). Thus, the real-time elongation of the textile during the warp stretching process can be accurately obtained. After the warp tensile test is completed, the staff controls the second electric push rod 128 to retract through the controller 14, so that the clamping plate 129 and the U-shaped support plate 127 release the clamping of the warp edge of the textile. Then the controller 14 starts the first motor 111, which drives the rotating shaft 112 to rotate. The rotating shaft 112 drives the slide rail 121 to rotate as a whole through the fixed rod 113, thereby adjusting the movement trajectory of the pull plate 125 in the fan-shaped opening 8, so that the U-shaped support plate 127 above the pull plate 125 deflects smoothly in the clockwise direction. During this process, the infrared sensor 15 at the bottom of the slide rail 121 continuously emits infrared signals. When the sensor rotates with the slide rail 121 to the preset 45° position, the infrared signal is reflected by the reflector 16 at the corresponding position and received by the infrared sensor 15, forming a stable feedback loop. After receiving the reflected signal, the infrared sensor 15 immediately outputs an electrical signal indicating that the position is in place to the controller 14. After receiving the signal, the controller 14 immediately stops the first motor 111, realizing the precise docking of the U-shaped pallet 127 and the clamping plate 129 in the 45° oblique direction. After positioning, controller 14 controls the second electric push rod 128 to extend, so that clamping plate 129 and U-shaped support plate 127 cooperate to stably clamp the 45° oblique edge of the textile. Then, the second motor 123 is started to complete the 45° oblique tensile test. After the 45° test is completed, controller 14 drives the first motor 111 again to drive slide rail 121 to continue to rotate clockwise by the corresponding angle, so that clamping plate 129 and U-shaped support plate 127 are accurately aligned with the weft edge of the textile and clamped. Then the weft tensile test can be carried out smoothly. Finally, the complete tensile performance test in the warp, 45° oblique and weft directions is realized (by optimizing the process of independent testing of warp, 45° oblique and weft directions by multiple complete samples of the same batch, replacing the original method of continuous tensile test of single sample, without changing the structure of the device, the test data in each direction is guaranteed to be true and valid, and the design goal of accurate tensile test in three directions is achieved).

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A textile tensile strength testing device, comprising a base (1), wherein support columns (2) are fixedly provided at the four corners of the top of the base (1), and the upper ends of the four support columns (2) are fixedly provided with the same testing platform (3), characterized in that, Also includes: A tray (4) is fixedly set at the center of the upper surface of the test bench (3). A support frame (5) is provided around the tray (4). Multiple evenly distributed support rods (6) are fixed between the inner side wall of the support frame (5) and the circumferential wall of the tray (4). A pressing mechanism (7) that cooperates with the tray (4) is provided on the upper surface of the test bench (3). A fan-shaped opening (8) is opened on the upper surface of the test bench (3) and on one side of the tray (4). The warp positioning detection mechanism (9) is located inside the pressing mechanism (7) and is used to detect the warp lines on the surface of the textile between the tray (4) and the pressing mechanism (7). A vacuuming mechanism (10) is disposed on top of the pressing mechanism (7), and the suction end of the vacuuming mechanism (10) extends to one side of the radial positioning detection mechanism (9); A rotating mechanism (11) is provided between the base (1) and the test platform (3). A tensile testing mechanism (12) is provided on one side of the rotating mechanism (11). The clamping end of the tensile testing mechanism (12) extends into the interior of the fan-shaped opening (8). The distance detection mechanism (13) is disposed on the side wall of the tensile testing mechanism (12), and the distance detection mechanism (13) is used to detect the elongation of the textile. The controller (14) is fixedly installed on one corner of the upper surface of the test bench (3). The pressing mechanism (7), the longitudinal positioning detection mechanism (9), the dust suction mechanism (10), the rotating mechanism (11), the tensile testing mechanism (12) and the distance detection mechanism (13) are all electrically connected to the controller (14).

2. The textile tensile strength testing device according to claim 1, characterized in that, The clamping mechanism (7) includes an L-shaped support rod (71) fixedly installed on the upper surface of the test bench (3). A first electric push rod (72) is fixedly installed on the top of the L-shaped support rod (71). A pressure sensor (73) is fixedly installed at the moving end of the first electric push rod (72). A U-shaped connecting plate (74) is fixedly installed at the detection end of the pressure sensor (73). A pressure plate (75) is fixedly installed at the bottom of the U-shaped connecting plate (74).

3. The textile tensile strength testing device according to claim 2, characterized in that, The radial positioning detection mechanism (9) includes a strip-shaped detection groove (91) disposed on the lower surface of the pressure plate (75), a mounting plate (92) is fixedly disposed on the top of the strip-shaped detection groove (91), a laser positioning instrument (93) is fixedly disposed on the lower surface of the mounting plate (92), and convex lens pieces (94) are fixedly embedded on both sides of the upper surface of the mounting plate (92).

4. The textile tensile strength testing device according to claim 3, characterized in that, The vacuuming mechanism (10) includes a vacuum cleaner (101) fixedly mounted on the top of the L-shaped support rod (71). The suction end of the vacuum cleaner (101) is fixedly provided with a suction pipe (102). The end of the suction pipe (102) away from the vacuum cleaner (101) extends to one side of the strip detection groove (91).

5. The textile tensile strength testing device according to claim 1, characterized in that, The rotating mechanism (11) includes a first motor (111) fixedly installed at the top center of the base (1), and a rotating shaft (112) is fixedly provided at the output end of the first motor (111), and a fixing rod (113) is fixedly provided on the shaft wall of the rotating shaft (112).

6. The textile tensile strength testing device according to claim 5, characterized in that, The tensile testing mechanism (12) includes a slide rail (121) fixedly disposed at the end of the fixed rod (113). A slider (122) is provided inside the slide rail (121). A second motor (123) is fixedly disposed on one side of the slide rail (121). A screw (124) is rotatably disposed inside the slide rail (121) and threadedly connected to the slider (122). One end of the screw (124) is fixedly connected to the output end of the second motor (123). A pulling plate (125) is fixedly disposed on the top of the slider (122). A tension sensor (126) is fixedly disposed on the upper side wall of the pulling plate (125). A U-shaped support plate (127) is fixedly disposed on the detection end of the tension sensor (126). A second electric push rod (128) is fixedly disposed on the top of the U-shaped support plate (127). The moving end of the second electric push rod (128) extends into the interior of the U-shaped support plate (127) and is fixedly disposed with a clamping plate (129).

7. The textile tensile strength testing device according to claim 6, characterized in that, The distance detection mechanism (13) includes a detection chamber (131) fixedly disposed on the side wall of the slide rail (121). A resistance rod (132) is fixedly disposed inside the detection chamber (131). An insulating block (133) is slidably disposed inside the detection chamber (131). A conductive ring (134) is fixedly disposed inside the insulating block (133) and slidably connected to the resistance rod (132). An L-shaped connecting rod (135) is fixedly disposed on the top of the insulating block (133) and fixedly connected to the side wall of the pull plate (125).

8. The textile tensile strength testing device according to claim 6, characterized in that, An infrared sensor (15) is fixedly installed at the bottom of the slide rail (121), and three reflectors (16) are fixedly installed at the top of the base (1) and below the fan-shaped opening (8). The three reflectors (16) are distributed in an arc shape with the first motor (111) as the center.

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