Tear resistance detection equipment for garment materials

Abstract

The invention provides a garment fabric tear resistance detection device, and belongs to the technical field of garment fabric tear resistance detection equipment, and the garment fabric tear resistance detection device comprises a mounting rack, a first clamp holder, a second clamp holder, a measurement light curtain, a controller and a display. A guide rail is arranged on the mounting frame, and the first clamp holder and the second clamp holder move relatively along the extension direction of the guide rail so as to measure the tearing strength of the tongue-shaped sample; the transmitting end and the receiving end of the measuring light curtain are both arranged across the tongue-shaped sample in the width direction, the transmitting end and the receiving end are located on the two sides of at least one trouser edge in the tongue-shaped sample respectively, and the measuring light curtain moves relative to the corresponding trouser edge in the tearing direction of the tongue-shaped sample. The measuring light curtain can be used for measuring the notch position of the tongue-shaped sample in real time in the tearing process, so that the efficiency is improved, the situation that unqualified measurement data are mistakenly considered to be qualified due to inaccurate measurement can be avoided, and the accuracy of a detection result is ensured.

Description

Technical Field

[0001] This application belongs to the technical field of tear strength detection of clothing fabrics. More specifically, it relates to a tear resistance detection device for clothing fabrics. Background Art

[0002] The tear resistance performance detection of clothing fabrics is a test method used to evaluate whether the fabric is prone to rupture when subjected to external forces. It is one of the important detection indicators of textile fabrics and directly affects the quality of clothing. In the prior art, there are various methods for detecting the tear resistance performance of fabrics, such as the impact pendulum method, trouser method, trapezoid method, wing method, etc., and each has corresponding national standard specifications.

[0003] In the national standard specifications, GB / T3917.2 Determination of tear strength of tongue-shaped specimens for fabric tearing properties is a common detection standard for the tear resistance ability of fabrics, which stipulates the test methods including single-tongue specimens and double-tongue specimens. By tearing the specimen along the specified incision to a specific tearing length, the detection device records the tearing strength until the specified length is torn, and calculates the tearing strength based on the peak value on the curve drawn by the automatic plotter or through an electronic device.

[0004] During the actual detection process, due to the great differences in different clothing fabrics and the different directions of the knitting threads inside the fabric. In order to ensure the comprehensiveness and accuracy of the data, it is often necessary to conduct tear detection along different knitting thread directions on the fabric sample. However, since the knitting thread direction may affect the tearing direction, for both single-tongue specimens and double-tongue specimens, the incision of some specimens after tearing is not along the specified straight line direction, and there may be Figures 1 to 3 the situation of inclined deviation as shown. If the deviation of the incision from the specified straight line direction is large, the detection data for this time needs to be invalidated.

[0005] In the existing detection process, it is impossible to detect whether the incision direction of the tear meets the detection requirements during the detection process, and it can only be achieved by visual inspection or manual measurement after the detection is completed. If the incision deviation is small and difficult to identify with the naked eye, specimens that do not meet the detection requirements may be regarded as part of the detection results, resulting in inaccurate detection. Therefore, a detection device that can detect whether the incision meets the specified direction during the tear performance test is needed. Summary of the Invention

[0006] To solve the deficiencies of the prior art, this application provides a tear resistance detection device for clothing fabrics to solve the defect in the prior art that it is impossible to directly detect whether the incision of the tear meets the regulations.

[0007] To achieve the above object, the technical solution of the present application provides a tear resistance detection device for clothing fabrics, including a mounting frame, a first gripper, a second gripper, a controller and a display. The mounting frame is provided with a guide rail; the first gripper and the second gripper move relative to each other along the extension direction of the guide rail. A tearing tensile force sensor is provided in the first gripper or the second gripper. The first gripper or the second gripper is controlled by the controller. Both the tearing tensile force sensor and the display are connected to the controller; It further includes a measuring light curtain connected to the controller. The measuring light curtain has a transmitting end and a receiving end opposite to each other. Both the transmitting end and the receiving end span across the tongue-shaped specimen in the width direction. The transmitting end and the receiving end are respectively located on both sides of at least one of the trouser edges of the tongue-shaped specimen, and the measuring light curtain moves relative to the corresponding trouser edge along the tearing direction of the tongue-shaped specimen.

[0008] Optionally, the tongue-shaped specimen is a double-tongue specimen. The two trouser edges of the tongue-shaped specimen are a single-edge trouser edge and a double-edge trouser edge respectively. The transmitting end and the receiving end are respectively located on both sides of the single-edge trouser edge.

[0009] Optionally, the tongue-shaped specimen is a single-tongue specimen. The two trouser edges of the tongue-shaped specimen are both single-tongue trouser edges. There are two groups of measuring light curtains. The two groups of measuring light curtains are respectively corresponding and symmetrically arranged with the two single-tongue trouser edges. The transmitting end and the receiving end of each group of measuring light curtains are respectively located on both sides of the corresponding single-tongue trouser edge.

[0010] Optionally, the guide rail is a horizontal guide rail. The root of the tongue-shaped specimen far from the incision is a free hanging end. The top of the mounting frame is provided with a receiving cavity for accommodating the free hanging end. The side wall of the receiving cavity blocks between the measuring light curtain and the free hanging end.

[0011] Optionally, both the first gripper and the second gripper are slidably arranged on the guide rail. The measuring light curtain is fixedly connected to the mounting frame. The first gripper and the second gripper move away from each other at a constant speed along the guide rail to tear the tongue-shaped specimen.

[0012] Optionally, the first gripper is fixedly connected to the mounting frame. The second gripper is slidably arranged on the guide rail. A driving device and a slide rail parallel to the guide rail are installed on the mounting frame. A slide plate is slidably arranged on the slide rail. The output end of the driving device is fixedly connected to the slide plate to drive the slide plate to move along the slide rail. The driving device is controlled by the controller; The measuring light curtain is fixedly installed on the slide plate. The receiving cavity is located on the slide plate. When tearing the specimen, both the slide plate and the second gripper move in the same direction along the direction away from the first gripper, and the moving speed of the slide plate is one-half of the moving speed of the second gripper.

[0013] Optionally, the driving device is a lead screw motor or a push rod motor.

[0014] The beneficial effect of the technical solution of the present application compared with the prior art lies in: The first gripper and the second gripper are used to tear a tongue-shaped specimen, and the tearing strength is measured by a tearing force sensor. The measuring light curtain moves relative to the corresponding trouser edge along the tearing direction of the tongue-shaped specimen to measure whether the torn incision conforms to the specified trend. If the width or inclination degree of the trouser edge changes by more than a predetermined value along the tearing direction, it indicates that the torn incision deviates, and the test result of this tongue-shaped specimen is invalid. The measuring light curtain can measure the incision position of the tongue-shaped specimen in real time during the tearing process without manual measurement after tearing. At the same time, it can also identify the deflection situations that are difficult to judge by visual inspection, improving the efficiency and ensuring that the unqualified measurement data will not be misjudged as qualified due to inaccurate measurement, thus ensuring the accuracy of the detection results. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 Schematic diagram of the first deviation structure of the incision of the double-tongue specimen; Figure 2 Schematic diagram of the second deviation structure of the incision of the double-tongue specimen; Figure 3 Schematic diagram of the deviation structure of the incision of the single-tongue specimen; Figure 4 Schematic diagram of the double-tongue specimen; Figure 5 Schematic diagram of the first anti-tearing detection device for measuring the clothing fabric of the double-tongue specimen; Figure 6 For Figure 5 Partial enlarged view at position A in Figure 7 Coordinate diagram of the incision position - tearing length detection of the double-tongue specimen.

[0017] Figure 8 Front view of the structure of the second anti-tearing detection device for measuring the clothing fabric of the double-tongue specimen; Figure 9 Schematic diagram of the single-tongue specimen; Figure 10 Schematic diagram of the first anti-tearing detection device for measuring the clothing fabric of the single-tongue specimen; Figure 11 For Figure 10 Partial enlarged view at position B in Figure 12 Coordinate diagram of the incision position - tearing length detection of the single-tongue specimen; Figure 13 It is a schematic structural diagram of an anti - tear detection device for clothing fabrics for measuring single - tongue specimens.

[0018] Icons: 10. Double - tongue specimen; 11. Single - side trouser edge; 12. Double - side trouser edge; 13. Single - tongue specimen; 14. Single - tongue trouser edge; 15. Free - hanging end; 16. Inner side; 17. Outer side; 101. Mounting frame; 102. First gripper; 103. Second gripper; 104. Guide rail; 105. Measuring light curtain; 106. Transmitting end; 107. Receiving end; 108. Accommodation cavity; 109. Driving device; 110. Slide rail; 111. Slide plate. Detailed implementation mode

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following further elaborates on this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application. Embodiment

[0020] This embodiment provides an anti - tear detection device for clothing fabrics, based on Figure 5 and Figure 6 As shown, it includes a mounting frame 101, a first gripper 102, a second gripper 103, a controller and a display. The mounting frame 101 is provided with a guide rail 104, and the first gripper 102 and the second gripper 103 move relative to each other along the extension direction of the guide rail 104. The first gripper 102 and the second gripper 103 are respectively used to grip the two trouser - edge ends of the tongue - shaped specimen, and move away from each other along the guide rail 104 to tear the tongue - shaped specimen. A tear - force sensor is provided inside the first gripper 102 or the second gripper 103. The first gripper 102 or the second gripper 103 is controlled by the controller to move relative to the guide rail 104. Both the tear - force sensor and the display are connected to the controller (the controller, the display and the tear - force sensor are not shown in the drawings). The tear - force sensor measures the tear strength of the tongue - shaped specimen, and the controller analyzes the test data and generates a force - elongation curve to be displayed on the display. The above structures are the same as those of the existing tester for measuring the tear strength of fabrics and will not be elaborated further.

[0021] On the basis of the above structure, a measuring light curtain 105 connected to the controller is further included. The measuring light curtain 105 has a transmitting end 106 and a receiving end 107 opposite to each other, and both the transmitting end 106 and the receiving end 107 are arranged across the tongue-shaped sample in the width direction, and the transmitting end 106 and the receiving end 107 are respectively located on both sides of at least one trouser edge in the tongue-shaped sample, and the measuring light curtain 105 moves relative to the corresponding trouser edge along the tearing direction of the tongue-shaped sample, so that by measuring the position of the incision relative to the zero point of the measuring light curtain 105, or measuring the width of the trouser edge, it is possible to detect whether the incision is deviated and determine whether the test result meets the test requirements.

[0022] In detail, in this embodiment, based on Figure 4 Shown to Figure 7 As shown, the tongue-shaped sample to be tested is a double-tongue sample 10, and its two trouser edges are a single-side trouser edge 11 and a double-side trouser edge 12. The root of the double-tongue sample 10 away from the single-side trouser edge 11 and the double-side trouser edge 12 is in a free hanging state when torn, and this end is a free hanging end 15. For the double-tongue sample 10, the number of measuring light curtains 105 is one group, and its transmitting end 106 and receiving end 107 are respectively located on both sides of the single-side trouser edge 11. The first clamp 102 clamps the double-side trouser edge 12, and the second clamp 103 clamps the single-side trouser edge 11. The first clamp 102 and the second clamp 103 are away from each other to tear the tongue-shaped sample. The measuring light curtain 105 is only set on the single-sided trouser edge 11 because both sides of the single-sided trouser edge 11 are tearing cuts. During the tearing process, the forces on both sides of the single-sided trouser edge 11 are relatively symmetrical, and wrinkles and twists will not appear due to uneven force. Moreover, by measuring the inclination of the cuts on both sides of the single-sided trouser edge 11, it can be fully determined whether the cuts extend in the prescribed direction. For the double-sided trouser edge 12, its inner side edge 16 is stretched as a cut, while the outer side edge 17 is not a cut. The two sides are unevenly stressed during the tearing process, which causes wrinkles or twists on the double-sided trouser edge 12 when it is pulled, resulting in inaccurate width measurement. Therefore, there is no need to set up an additional measuring light curtain 105 on the double-sided trouser edge 12 for detection. At the same time, the guide rail 104 is a horizontal guide rail 104. During actual tearing, the free hanging end 15 will be twisted and deformed near the incision due to uneven force on both sides, and some harder fabrics may curl up, making the free hanging end 15 not in a strictly hanging state. Therefore, a accommodating cavity 108 for accommodating the free hanging end 15 is provided at the top of the mounting frame 101, and the side wall of the accommodating cavity 108 is blocked between the measuring light curtain 105 and the free hanging end 15. In this way, the free hanging end 15 will not be blocked in the light path between the transmitting end 106 and the receiving end 107 due to deformation, thereby avoiding interference with the measurement.

[0023] In this embodiment, the first gripper 102 and the second gripper 103 are both slidably disposed on the guide rail 104. The measuring light curtain 105 is fixedly connected to the mounting bracket 101. The first gripper 102 and the second gripper 103 move away from each other at a constant speed along the guide rail 104 to tear the tongue-shaped specimen. During the tearing of the specimen, the unilateral trouser edge 11 passes through the measuring path between the transmitting end 106 and the receiving end 107, realizing relative movement with the measuring light curtain 105. The measuring light curtain 105 detects the torn unilateral trouser edge 11 along the tearing length direction. The detected data is processed by the data processing device in the controller, and a side position - tearing length curve is generated on the display screen. Based on Figure 7 As shown, the side position - tearing length curve takes one end of the measuring light curtain 105 as the zero position. The abscissa is the tearing length X, that is, the moving distance of the unilateral trouser edge 11 relative to the measuring light curtain 105, and the ordinate is the coordinate values A and B of the incisions on both sides of the unilateral trouser edge 11 relative to the zero position. It has two data processing methods.

[0024] Method 1: At any tearing length X0, the absolute value of the difference between the coordinate values A0 and B0 of the incisions on both sides relative to the zero position is the width m of the unilateral trouser edge 11 at this tearing length. If the difference between m and the standard width of the unilateral trouser edge 11 exceeds the specified value, it indicates that the unilateral trouser edge 11 has been excessively narrowed or widened during the tearing process, and the test result of this time is invalidated. The width m of the unilateral trouser edge 11 at any position can be calculated in real time by the controller and displayed on the display screen. If the situation of exceeding the specified value occurs, it can also be specially displayed to prompt the operator.

[0025] Method 2: The maximum and minimum values of the coordinate values A and B of the incisions on both sides relative to the zero position along the tearing length X direction are A max and A min and B max and B min . If there is a difference between A max and A min or between B max and B min , it indicates that the corresponding incision is skewed. If the difference between A max and A min or the difference between B max and B min exceeds the specified standard value, it indicates that the incision is excessively skewed, and the test result of this time is invalidated. During the detection process, the difference between A max and A min and the difference between B max and B min can be calculated in real time by the controller and displayed on the display screen. If the situation of exceeding the specified value occurs, it can also be specially displayed to remind the operator.

[0026] The technical solution of this application can measure the incision position of the tongue-shaped specimen in real time during the tearing process by adding a measuring light curtain 105, without the need for manual measurement after tearing. At the same time, it can also identify the skew situation that is difficult to judge by visual inspection, improve efficiency, and ensure that the unqualified measurement data will not be misjudged as qualified due to inaccurate measurement, ensuring the accuracy of the detection results. Embodiment

[0027] This embodiment provides a tear resistance detection device for clothing fabrics, which is also used to detect the double-tongue specimen 10. The difference from the structure in Embodiment 1 is that based on Figure 4 and Figure 8 As shown, the first gripper 102 is fixedly connected to the mounting frame 101, and the second gripper 103 is slidably arranged on the guide rail 104. The reason is that for some testers, one gripper is fixed, and it is also a common method to tear the specimen by sliding another gripper along the guide rail 104. The first gripper 102 is used to grip the double-sided trouser edge 12, and the second gripper 103 is used to grip the single-sided trouser edge 11. At this time, when the second gripper 103 drives the single-sided trouser edge 11 to tear at a speed V1, the free hanging end 15 moves in the same direction as the second gripper 103 at half of the speed V1. Therefore, in order to ensure the normal progress of the detection, it is necessary to adjust the settings of the measuring light curtain 105 and the accommodation cavity 108.

[0028] Specifically, in this embodiment, based on Figure 8 As shown, a driving device 109 and a slide rail 110 parallel to the guide rail 104 are installed on the mounting frame 101. A slide plate 111 is slidably arranged on the slide rail 110. The output end of the driving device 109 is fixedly connected to the slide plate 111 to drive the slide plate 111 to move along the slide rail 110. The driving device 109 is controlled by a controller. The driving device 109 can adopt a lead screw motor or a push rod motor. The measuring light curtain 105 is fixedly installed on the slide plate 111, and the accommodation cavity 108 is located on the slide plate 111. When tearing the specimen, both the slide plate 111 and the second gripper 103 move in the same direction away from the first gripper 102, and the moving speed of the slide plate 111 is half of the moving speed of the second gripper 103. In this way, the position of the slide plate 111 is relatively stationary with the position of the free hanging end 15, and the free hanging end 15 can always be placed into the free hanging end 15. At the same time, the moving speed of the measuring light curtain 105 is half of the moving speed of the single-sided trouser edge 11, realizing the relative movement of the measuring light curtain 105 and the single-sided trouser edge 11 along the tearing direction. The measuring light curtain 105 detects the single-sided trouser edge 11, and the data processing method is the same as that in Embodiment 1 and will not be elaborated here. Embodiment

[0029] This embodiment provides a tear resistance detection device for clothing fabrics, which is used to detect Figure 9The shown single-tongue specimen 13 has single-tongue trouser edges 14 on both sides. The difference between the anti-tearing detection device for the clothing fabric in this embodiment and that in Embodiment 1 is only that there are two groups of measurement light curtains 105. The two groups of measurement light curtains 105 correspond to and are symmetrically arranged with the two single-tongue trouser edges 14 respectively, that is, the two groups of measurement light curtains 105 are symmetrically arranged on both sides of the free-hanging end 15. The transmitting end 106 and the receiving end 107 of each group of measurement light curtains 105 are respectively located on both sides of the corresponding single-tongue trouser edge 14.

[0030] In this embodiment, the first gripper 102 and the second gripper 103 move away from each other at a constant speed along the guide rail 104 to tear the tongue-shaped specimen. During the tearing of the specimen, the two single-tongue trouser edges 14 respectively pass through the measurement paths between the transmitting end 106 and the receiving end 107 of the two groups of measurement light curtains 105, realizing the relative movement with the corresponding measurement light curtains 105. The two groups of measurement light curtains 105 respectively detect the two torn single-tongue trouser edges 14 along the tearing length direction. Since the two groups of measurement light curtains 105 are symmetrically arranged, the widths of the two single-tongue trouser edges 14 at the same tearing position can be measured simultaneously during the tearing process.

[0031] For the single-tongue specimen 13, the reason for measuring the two single-tongue trouser edges 14 respectively through the two groups of measurement light curtains 105 instead of only measuring one single-tongue trouser edge 14 is that during the tearing process, there is only one cut in the single-tongue trouser edge 14, and its inner side edge 16 is stretched as the cut is stressed, while the outer side edge 17 is not the cut, and the two sides are unevenly stressed during the tearing process, which causes the single-tongue trouser edge 14 to wrinkle or twist during pulling, resulting in inaccurate width measurement. However, since the two single-tongue trouser edges 14 are symmetric to each other and the tongue-shaped specimen meets the standard of uniform material, therefore, by measuring the widths of the two single-tongue trouser edges 14 at the same tearing position respectively through the two groups of measurement light curtains 105 and calculating the width difference between the two single-tongue trouser edges 14 at the same tearing position, it is possible to determine whether the cut has deviated.

[0032] Specifically, based on Figure 12As shown, the detected data is processed by the data processing device in the controller, and two side position - tear length curves of the single - tongue trouser hem 14 are respectively generated on the display screen. The side position - tear length curve takes one end of the measuring light curtain 105 as the zero - point position. The abscissa is the tear length X, that is, the moving distance of the single - tongue trouser hem 14 relative to the measuring light curtain 105, and the ordinate is the coordinate value of the side of the single - tongue trouser hem 14 relative to the zero - point position. For the left single - tongue trouser hem 14, the coordinate values of both sides at any tear - length position X1 are C1 and C2 respectively, then the width p of the left single - tongue trouser hem 14 at the tear - length position X1 is the absolute value of the difference between C1 and C2. For the right single - tongue trouser hem 14, the coordinate values of both sides at the same tear - length position X1 are D1 and D2 respectively, then the width q of the right single - tongue trouser hem 14 at the tear - length position X1 is the absolute value of the difference between D1 and D2. The data processing device in the controller compares the magnitudes of p and q. If the absolute value of the difference between p and q at a certain tear - length position exceeds the specified value, it indicates that the surface cutting position has deviated excessively at this point, and the result of this test is invalidated.

[0033] During the detection process, the values of p and q and the absolute value of the difference between p and q can be calculated in real - time by the controller and displayed on the display screen, or an absolute - value - of - the - difference - between - p - and - q - tear - length curve can be generated as an aid. If the situation of exceeding the specified value occurs, it can also be specially displayed to remind the operator. Embodiment

[0034] This embodiment provides a tear - resistance detection device for clothing fabrics to achieve the same way as in Embodiment 2, where one gripper is fixed and the other gripper slides along the guide rail 104 to tear the specimen. The difference between this embodiment and Embodiment 2 is that this embodiment is used to detect the single - tongue specimen 13.

[0035] Based on Figure 9 and Figure 13As shown in the figure, the difference between the structure of this embodiment and that of Embodiment 2 lies in that there are two sets of measuring light curtains 105, both of which are fixedly installed on the top of the sliding plate 111, and the two sets of measuring light curtains 105 are symmetrically arranged on both sides of the accommodating cavity 108. When the second gripper 103 drives one of the single-tongue trouser edges 14 to tear at a speed of V1, the free hanging end 15 moves in the same direction as the second gripper 103 at half of the speed V1. When tearing the specimen, both the sliding plate 111 and the second gripper 103 move in the same direction along the direction away from the first gripper 102, and the moving speed of the sliding plate 111 is half of the moving speed V1 of the second gripper 103. In this way, the position of the sliding plate 111 is relatively stationary with respect to the position of the free hanging end 15, and the free hanging end 15 can always be placed into the free hanging end 15. At the same time, both of the two measuring light curtains 105 move relative to the corresponding single-tongue trouser edge 14 at a magnitude of half of the moving speed V1 of the second gripper 103, so as to realize the detection of the width of the single-tongue trouser edge 14 by the measuring light curtain 105. The specific data processing method of this embodiment is the same as that in Embodiment 3 and will not be elaborated here.

[0036] The foregoing are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A tear resistance detection device for clothing fabrics, comprising a mounting frame, a first clamp, a second clamp, a controller and a display, wherein the mounting frame is provided with a guide rail; the first clamp and the second clamp move relative to each other along the extension direction of the guide rail, the first clamp or the second clamp has a tear force sensor therein, the first clamp or the second clamp is controlled by the controller, and the tear force sensor and the display are both connected to the controller; Features: It also includes a measuring light curtain connected to the controller, the measuring light curtain has a transmitting end and a receiving end opposite to each other, the transmitting end and the receiving end are both arranged across the tongue-shaped sample along the width direction, the transmitting end and the receiving end are respectively located on both sides of at least one trouser edge in the tongue-shaped sample, and the measuring light curtain moves relative to the corresponding trouser edge along the tearing direction of the tongue-shaped sample.

2. The tear resistance testing device for clothing fabrics according to claim 1, characterized in that: The tongue-shaped sample is a double-tongue sample, and the two trouser edges of the tongue-shaped sample are a single-side trouser edge and a double-side trouser edge respectively, and the transmitting end and the receiving end are respectively located at two sides of the single-side trouser edge.

3. The tear resistance testing device for clothing fabrics according to claim 1, characterized in that: The tongue-shaped specimen is a single-tongue specimen, and both trouser edges of the tongue-shaped specimen are single-tongue trouser edges. There are two groups of measuring light curtains, and the two groups of measuring light curtains correspond to the two single-tongue trouser edges and are symmetrically arranged. The transmitting end and the receiving end of each group of measuring light curtains are respectively located on both sides of the corresponding single-tongue trouser edges.

4. The tear resistance testing device for clothing fabrics according to claim 2 or 3, characterized in that: The guide rail is a horizontal guide rail, the root of the tongue-shaped specimen away from the incision is a free hanging end, the top of the mounting frame is provided with a receiving cavity for receiving the free hanging end, and the side wall of the receiving cavity is blocked between the measuring light curtain and the free hanging end.

5. The tear resistance testing device for clothing fabrics according to claim 4, characterized in that: The first clamp and the second clamp are both slidably arranged on the guide rail, the measuring light curtain is fixedly connected to the mounting frame, and the first clamp and the second clamp move in opposite directions at a constant speed along the guide rail to tear the tongue-shaped sample.

6. The tear resistance testing device for clothing fabrics according to claim 4, characterized in that: The first clamp is fixedly connected to the mounting frame, the second clamp is slidably arranged on the guide rail, a driving device and a slide rail parallel to the guide rail are installed on the mounting frame, a slide plate is slidably arranged on the slide rail, an output end of the driving device is fixedly connected to the slide plate to drive the slide plate to move along the slide rail, and the driving device is controlled by the controller; The measuring light curtain is fixedly mounted on the slide, the accommodating cavity is located on the slide, and when the sample is torn, the slide and the second clamp both move in the same direction away from the first clamp, and the movement speed of the slide is half of the movement speed of the second clamp.

7. The tear resistance testing device for clothing fabrics according to claim 6, characterized in that: The driving device is a screw motor or a push rod motor.

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