Non-woven fabric tearing detection device

Abstract

The invention relates to the technical field of non-woven fabric tearing detection, in particular to a non-woven fabric tearing detection device. The slitting assembly comprises a mounting frame arranged on the rear side of the vertical plate, two rotating shafts are rotationally arranged on the vertical plate in a penetrating mode at intervals, the two ends of each rotating shaft are each provided with a guide sleeve and a full gear, the full gears on the same side are meshed with each other, and a sliding frame is arranged between the guide sleeves on the same rotating shaft in a sliding and penetrating mode. By integrating the slitting assembly special for cutting the sample cloth and utilizing contact type pushing fit between the push plate and the protruding end of the sliding frame, cooperative control over the first cutter and the second cutter is achieved, and therefore cutting and crack cutting can be synchronously conducted on the sample cloth, the sample cloth can be directly finished on the device without depending on an additional mold or tool, and the production efficiency is improved. The sample preparation process is greatly simplified, meanwhile, two rodless air cylinders are further arranged and used for tearing sample cloth, it is ensured that cutting and tearing operation can be integrally completed, and therefore the whole sample preparation process is optimized.

Description

Technical Field

[0001] The invention relates to the technical field of nonwoven fabric tear detection, in particular to a nonwoven fabric tear detection device. Background Art

[0002] Tear testing of nonwovens is a crucial step in ensuring their quality and safety. Tear strength testing assesses a nonwoven material's ability to resist tearing, which is crucial for determining whether a product will meet specific requirements in practical applications. Furthermore, tear testing provides a scientific basis for the production and use of nonwovens, helping manufacturers optimize production processes and improve product quality, while also helping consumers select nonwoven products that suit their needs.

[0003] The tongue-shaped tearing method is a commonly used method for testing the tear strength of nonwoven fabrics. When testing the tear strength of nonwoven fabrics, the sample is typically trimmed into a specific shape, partially cut, and then secured to a testing machine for tensile tear testing. This process requires additional cutting of the fabric sample using a specialized template prior to testing to ensure the sample size fits the specific testing machine fixture. This makes test preparation cumbersome and time-consuming, increasing the complexity of the process. Furthermore, the separation of cutting and testing operations can result in the sample size or shape not being compatible with the fixture, affecting the accuracy of the test results.

[0004] Therefore, it is particularly necessary to propose a nonwoven fabric tear detection device with integrated cutting function, aiming to solve the above problems, simplify the sample preparation process, improve the detection efficiency and data accuracy, thereby achieving more accurate and reliable tear performance testing, and ultimately improving the overall quality control level. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a nonwoven fabric tear detection device integrating a cutting function.

[0006] The technical solution is: a nonwoven fabric tear detection device, comprising: The bottom platform is provided with a display platform and a vertical plate, on which two rodless cylinders are installed, and the sliders of the rodless cylinders are provided with clamps; A slitting assembly for cutting sample fabrics, comprising a mounting frame arranged at the rear side of a vertical plate, two rotating shafts being rotatably provided on the vertical plate at intervals, a guide sleeve and a full gear being provided at both ends of the rotating shaft, the full gears on the same side being meshed with each other, a sliding frame being slidably provided between the guide sleeves on the same rotating shaft, a cutter being provided on each inner wall on both sides of the front end of the sliding frame, the rear ends of the sliding frames being placed in the mounting frame, and the rear ends of the sliding frames being provided with raised ends; The support frame is arranged on the upper rotating shaft, and the cutter 2 is slidably passed through the front side of the support frame. The support frame is provided with symmetrically arranged guide rods, and the guide rods are provided with a pulling component for assisting the movement of the cutter 2.

[0007] To further explain, the clamp includes positioning frames respectively arranged on the sliders of the two rodless cylinders, and a threaded rod is respectively passed through and threaded on one side of the two positioning frames. The two threaded rods are arranged relative to each other, and a splint is provided on one end of the threaded rod placed inside the positioning frame.

[0008] Further explanation, the pulling assembly includes a push plate slidably arranged between the two guide rods, the push plate is in contact with the raised end, an elastic member is arranged between the push plate and the inner wall of the support frame, a pulley is rotated at the rear end of the support frame, a pulley is wound around the pulley, and the two ends of the pull rope are respectively connected to the cutter 2 and the push plate.

[0009] Further explanation is provided, and a limit plate is also included. The guide sleeve is provided with a limit plate for assisting in fixing the sample cloth, and auxiliary wheels arranged in a rotational arrangement are provided on the side of the sliding frame close to each other.

[0010] Further explanation: it also includes a cross bar, cross bars are provided on both sides of the front end of the sliding frame, a mosaic block is provided at the end of the lower cross bar, and a bracket is provided at the end of the upper cross bar. Buckle plates are slidably provided at both ends of the bracket, and two elastic parts are provided between the buckle plates and the corresponding brackets, and the buckle plates on the same side are buckled and matched with the corresponding mosaic blocks.

[0011] Further explanation: it also includes a sleeve, and a sleeve is provided on the left and right sides of the vertical plate. An extension rod is slidably inserted into the sleeve on both sides, and a Velcro is provided on the extension rod for bonding and fixing the sample cloth. The rear end of the extension rod is provided with a moving block that is slidably connected to the mounting frame.

[0012] Further explanation: it also includes a horizontal frame, which is arranged on the lower side of the front of the vertical plate. A hinged frame in a bent shape is hingedly arranged between the two ends of the horizontal frame, and a support plate for supporting the sample cloth is arranged at the end of the hinged frame.

[0013] Further explanation, it also includes an insertion rod, and both sides of the hinged frame are slidably provided with an insertion rod that is plugged into and cooperates with the vertical plate. A plate body is provided on the insertion rod, and an elastic member three is provided between the plate body and the hinged frame, and a gripping frame is provided at the end of the insertion rod.

[0014] The beneficial effects are as follows: 1. The present invention integrates a slitting assembly specifically for cutting sample cloths, and utilizes the contact-type pushing cooperation between the push plate and the raised end of the sliding frame to realize the coordinated control of the cutter one and the cutter two, so that the sample cloth can be cut and ripped synchronously, so that the sample cloth can be trimmed directly on the device without relying on additional molds or tools, which greatly simplifies the sample preparation process. At the same time, the device is further equipped with two rodless cylinders for performing the tearing operation on the sample cloth, ensuring that the cutting and tearing operations can be completed in an integrated manner, thereby optimizing the overall sample preparation process, reducing unnecessary pre-steps, and improving the consistency and accuracy of sample detection during the test process.

[0015] 2. The present invention extends both ends of the sliding frame by providing a cross bar, forming an operating end that is easy to grip, ensuring that the sliding frame is easy to operate after closing; at the same time, the ingenious combination of the gusset plate and the interlocking block ensures that the cross bar can be tightly closed, enhancing the stability and grip during operation.

[0016] 3. The specially designed extension rod of the present invention is equipped with Velcro, which can effectively fix the position of the sample fabric during the cutting process, thereby further improving the stability and accuracy of the cutting process.

[0017] 4. By utilizing the support plate and the hinged frame design thereon, the present invention realizes the lifting and pressing functions of the support plate, ensuring that the sample cloth is well supported during the tear detection process, thereby protecting the integrity of the sample cloth during the detection process and improving the reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the components such as the vertical plate, display platform and rodless cylinder of the present invention.

[0020] Figure 3 This is a three-dimensional structural cross-sectional view of the positioning frame, threaded rods, clamping plates and other components of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the sliding frame, cutter 2 and cross bar of the present invention.

[0022] Figure 5 It is a three-dimensional structural cross-sectional view of some parts of the cutting assembly of the present invention.

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the guide sleeve, full gear, sliding frame and other components after being disassembled.

[0024] Figure 7 This is a schematic diagram of the usage state of the slitting assembly and the cross bar of the present invention after being closed.

[0025] Figure 8 It is a three-dimensional structural cross-sectional view of the push plate, pulley, pull rope and other components of the present invention.

[0026] Figure 9 It is a schematic diagram of the three-dimensional structure of the sleeve, extension rod, moving block and other components of the present invention.

[0027] Figure 10 It is a three-dimensional structural diagram of the components such as the cross frame, hinged frame and support plate of the present invention.

[0028] In the above figures: 100: sample cloth, 1: base, 10: vertical plate, 11: display platform, 12: rodless cylinder, 121: positioning frame, 122: threaded rod, 123: clamping plate, 2: slitting assembly, 20: mounting frame, 21: rotating shaft, 22: guide sleeve, 221: limit plate, 23: full gear, 24: sliding frame, 241: raised end, 25: auxiliary wheel, 26: cutter 1, 3: support Frame, 31: Cutter 2, 32: Guide rod, 33: Push plate, 34: Elastic part 1, 35: Pulley, 36: Pull rope, 4: Cross bar, 41: Engaging block, 42: Bracket, 43: Buckle plate, 44: Elastic part 2, 5: Sleeve, 51: Extension rod, 52: Moving block, 53: Velcro, 6: Cross frame, 61: Articulated frame, 62: Support plate, 63: Insert rod, 631: Holding frame, 64: Elastic part 3. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0030] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The technical solutions of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0031] Example 1: A nonwoven fabric tear detection device, such as Figures 1-8 Shown, including: The base 1 is provided with a display platform 11 and a vertical board 10. The left and right sides of the middle part of the vertical board 10 are provided with strip grooves. The vertical board 10 is located on the left side of the display platform 11. The display platform 11 is used to display the test data to ensure that the operator can monitor the test progress in real time. Two vertically arranged rodless cylinders 12 are fixedly installed on the vertical board 10. The sliders of the rodless cylinders 12 are provided with sensor modules. The sensor modules are electrically connected to the display platform 11. At the same time, there is a gap between the sliders of the rodless cylinders 12 on both sides. Clamps are provided on the sliders of the rodless cylinders 12 for clamping and fixing the sample cloth 100 for inspection. The two rodless cylinders 12 perform opposite operations in the up and down directions, thereby performing tongue-shaped tearing on the clamped sample cloth 100, thereby achieving the inspection effect; The slitting assembly 2 for cutting the sample cloth 100 includes a mounting frame 20 fixedly arranged on the rear side of the vertical plate 10. The interior of the mounting frame 20 is hollow, and two rotating shafts 21 are rotatably provided on the vertical plate 10 at intervals. The two rotating shafts 21 are distributed up and down, and a guide sleeve 22 and a full gear 23 are provided at the left and right ends of the rotating shaft 21. The two full gears 23 on the same side mesh with each other, so that the two rotating shafts 21 can rotate synchronously, and a sliding frame 24 is slidably provided between the two guide sleeves 22 on the same rotating shaft 21. The two sliding frames 24 are distributed relatively to each other up and down, and the rear end of the sliding frame 24 slides through the strip groove of the vertical plate 10 and extends into the mounting frame 20. At the same time, the sliding frame 24 can slide forward and backward along the corresponding guide sleeve 22. Due to the existence of the rotating shaft 21, the sliding frame 24 has the ability to tilt and rotate. At the same time, under the meshing action of the full gear 23, the two sliding frames 24 can realize opening and closing actions (such as Figure 4 and Figure 7 As shown), to ensure stability during opening and closing, the lower sliding frame 24 is designed to be wider than the upper sliding frame 24, ensuring smooth rotation when the two are unfolded and intertwined; a cutter 26 is provided on each inner wall of the front end of the sliding frame 24, and the blades of the two cutters 26 at the upper and lower positions are aligned to ensure consistency in the cutting path of the sample fabric 100. The rear end of the sliding frame 24 is provided with a raised end 241; The support frame 3 is fixedly arranged on the upper rotating shaft 21, the support frame 3 is located inside the installation frame 20, and the support frame 3 and the corresponding sliding frame 24 are in the same horizontal position. The front side of the support frame 3 slides through a cutter 21 extending forward, and the cutter 21 slides in the front and rear directions. At the same time, the cutter 21 can rotate synchronously with the support frame 3 and pass through the gap between the sliders of the rodless cylinder 12. A guide rod 32 with a left-right symmetrical layout is provided between the front and rear inner walls of the support frame 3, and a pulling component is provided on the guide rod 32 for assisting the movement of the cutter 21. The pulling component can cooperate with the movement of the sliding frame 24 to push the cutter 21, ensuring that while the cutter 26 is used to cut the excess fabric on both sides of the sample fabric 100, the cutter 21 can simultaneously cut the torn edge of the sample fabric 100, realizing an integrated and coherent cutting operation of the sample fabric 100, thereby simplifying the pre-test preparation work, without the need for additional tools, so that all cutting steps can be completed in the same testing device.

[0032] like Figure 2 and Figure 3 As shown, the clamp includes positioning frames 121 respectively arranged on the sliders of the two rodless cylinders 12, the front side of the positioning frame 121 has an opening, and a threaded rod 122 is respectively passed through and threaded on one side of the two positioning frames 121. The two threaded rods 122 are arranged relative to each other, and a clamping plate 123 is provided on one end of the threaded rod 122 placed inside the positioning frame 121.

[0033] like Figure 7 and Figure 8 As shown, the pulling assembly includes a push plate 33 slidably arranged between two guide rods 32. The overall length of the push plate 33 is greater than the width of the sliding frame 24, and the push plate 33 slides back and forth. The push plate 33 contacts and cooperates with the raised end 241. An elastic member 34 is provided between the push plate 33 and the inner wall of the support frame 3. In this embodiment, the elastic member 34 is a spring, which can provide the necessary elastic force for the reset movement of the push plate 33, and a pulley 35 is embedded and rotatably provided at the rear end of the support frame 3. A pull rope 36 is wound around the pulley 35. The two ends of the pull rope 36 are respectively connected to the cutter 2 31 and the push plate 33. Through the connection of the pull rope 36, when the push plate 33 is pushed, the cutter 2 31 can be pulled synchronously to move, thereby realizing the driving of the cutting operation of the cutter 2 31.

[0034] like Figure 4-Figure 7As shown, it also includes a limiting plate 221. The guide sleeves 22 are each provided with a limiting plate 221 for assisting in fixing the sample cloth 100. The setting of the limiting plate 221 can expand the contact area between the guide sleeve 22 and the sample cloth 100, so that when the sliding frame 24 is in the closed state, the end of the sample cloth 100 is clamped and fixed by the action of the limiting plate 221, further ensuring the stability of the cutting position of the sample cloth 100, and preventing the sample cloth 100 from wrinkling, bending or deformation during the cutting process. In addition, the sliding frames 24 are each provided with an arranged auxiliary wheel 25 on the side close to each other for assisting the movement of the sliding frame 24, thereby reducing the friction of the sliding frame 24 during movement, ensuring smooth contact between the sliding frame 24 and the sample cloth 100, and improving the stability and smoothness of the operation.

[0035] When in use, first place the device on a stable table, and then prepare the sample cloth 100 required for testing. At this time, the two sliding frames 24 are in the unfolded state, and the sliders of the rodless cylinder 12 are aligned; then the sample cloth 100 is embedded in the two positioning frames 121, and the cutter 31 is located above the sample cloth 100, and then the two threaded rods 122 are screwed to drive the corresponding clamping plate 123 close to the sample cloth 100, so that the clamping plate 123 fits with the sample cloth 100 to achieve clamping and fixing of the position of the sample cloth 100, and then the operator smoothes the sample cloth 100 to ensure that the whole is flat.

[0036] Next, the operator holds the sliding racks 24 on both sides and pushes them toward the closed state. During this process, the sliding racks 24 synchronously drive the guide sleeves 22 and the rotating shaft 21 thereon to rotate, and the upper and lower relative full gears 23 are then engaged, further stabilizing the closing operation between the sliding racks 24; when the two sliding racks 24 are fully closed, the limit plates 221 synchronously contact and clamp the sample cloth 100, and at the same time, the cutter 23 passes through the gap between the sliders of the rodless cylinder 12 and contacts the sample cloth 100, and then the operator pulls the sample cloth 100 to unfold and pulls the sliding rack 24 forward to make it move along the opposite The corresponding guide sleeve 22 slides. During this process, the cutter 1 26 synchronously cuts the excess fabric on both sides of the sample fabric 100, thereby retaining the clamped fabric portion as the test sample fabric 100. When the sliding frame 24 moves to a certain distance, the protruding end 241 at its end contacts the push plate 33, and as the sliding frame 24 moves, the push plate 33 is pushed to slide forward along the guide rod 32. Under the action of the pull rope 36, the connected cutter 2 31 is synchronously pulled to move, so that the cutter 2 31 moves backward, thereby cutting the end of the sample fabric 100 with a slit, thereby achieving the synchronous operation of overall cutting and slit cutting; After the sample cloth 100 is cut, the sliding frame 24 is restored to the expanded state and pushed back to the initial position, and then the two rodless cylinders 12 are started to move the slider up and down relative to each other to perform tongue-shaped tear detection, thereby implementing tear detection on the sample cloth 100. At the same time, the display platform 11 synchronously displays the detection data to complete the entire detection process.

[0037] Example 2: Based on Example 1, Figure 4 and Figure 7 As shown, it also includes a cross bar 4, and cross bars 4 are provided on both sides of the left and right sides of the front end of the sliding frame 24. The end of the lower cross bar 4 is provided with an engaging block 41, and the end of the upper cross bar 4 is provided with a bracket 42. The left and right ends of the bracket 42 are slidably provided with a buckle plate 43, and an elastic member 2 44 is provided between the buckle plate 43 and the corresponding bracket 42. In this embodiment, the elastic member 2 44 is a compression spring, which ensures that the buckle plates 43 on both sides are always in a gathered state, and the buckle plates 43 on the same side are buckled and matched with the corresponding engaging blocks 41, so that the two cross bars 4 facing each other can be firmly combined together, further strengthening the position stability of the sliding frame 24 after closing. When in use, by holding the cross bar 4, a convenient gripping point is provided when moving the sliding frame 24, thereby enhancing the control ability of the sliding frame 24 and facilitating subsequent operation steps.

[0038] like Figure 9 As shown, it also includes a sleeve 5, and a sleeve 5 is provided on the left and right sides of the vertical plate 10. An extension rod 51 is slidably inserted into the sleeve 5 on both sides, and a Velcro 53 for bonding and fixing the sample cloth 100 is provided on the extension rod 51. The rear end of the extension rod 51 is provided with a moving block 52 that is slidably connected to the installation frame 20.

[0039] By pulling the extension rods 51 on both sides forward so that they extend out of the sleeve 5, the extension rods 51 can serve as support carriers on both sides of the bottom of the sample cloth 100. Due to the presence of the Velcro 53, the position of the sample cloth 100 can be firmly bonded and fixed to ensure that it remains flat, so that the sample cloth 100 can maintain an ideal flat state during the cutting process. This not only makes the subsequent cutting operation more stable, but also reduces the steps of manual stretching and flattening the sample cloth 100, thereby reducing the operational burden.

[0040] like Figure 1 and Figure 10 As shown, it also includes a horizontal frame 6, which is fixedly provided on the lower front side of the vertical plate 10, and a hinged frame 61 in a bent shape is hingedly provided between the left and right ends of the horizontal frame 6, and a support plate 62 for supporting the sample cloth 100 is provided at the end of the hinged frame 61, to ensure that the sample cloth 100 can be fully supported during the detection process, especially the unclamped part, to avoid collapse due to lack of support, thereby preventing the problem of uneven force on the sample cloth 100, so as to ensure the accuracy of the detection result.

[0041] like Figure 1 and Figure 10 As shown, it also includes an insertion rod 63. The left and right sides of the articulated frame 61 are slidably penetrated with an insertion rod 63 that is plugged into the vertical plate 10, so that when the articulated frame 61 is rotated and lifted, the insertion rod 63 is inserted into the vertical plate 10 to fix the rotation position of the articulated frame 61. A plate body is provided on the insertion rod 63, and an elastic member three 64 is provided between the plate body and the articulated frame 61. In this embodiment, the elastic member three 64 is a spring. Under the elastic force of the elastic member three 64, the insertion rod 63 can automatically reset and firmly lock the position, and a grip frame 631 is provided at the end of the insertion rod 63 to facilitate adjustment and fixation by the operator.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A nonwoven fabric tear detection device, comprising: A base (1), wherein a display platform (11) and a vertical plate (10) are provided on the base (1), two rodless cylinders (12) are installed on the vertical plate (10), and the sliders of the rodless cylinders (12) are both provided with clamps; The invention is characterized in that it further comprises: a slitting assembly (2) for cutting a sample cloth (100), the slitting assembly (2) comprising a mounting frame (20) arranged at the rear side of the vertical plate (10), two rotating shafts (21) being intermittently rotatably provided on the vertical plate (10), a guide sleeve (22) and a full gear (23) being provided at both ends of the rotating shaft (21), the full gears (23) on the same side being meshed with each other, a sliding frame (24) being slidably provided between the guide sleeves (22) on the same rotating shaft (21), a cutter (26) being provided on both sides of the inner wall of the front end of the sliding frame (24), the rear end of the sliding frame (24) being placed in the mounting frame (20), and a protruding end (241) being provided at the rear end of the sliding frame (24); A support frame (3) is arranged on the upper rotating shaft (21), and a second cutter (31) is slidably provided on the front side of the support frame (3). A symmetrically arranged guide rod (32) is provided on the support frame (3), and a pulling component for assisting the movement of the second cutter (31) is provided on the guide rod (32).

2. The nonwoven fabric tear detection device according to claim 1, wherein: The clamp comprises positioning frames (121) respectively arranged on the sliders of the two rodless cylinders (12), a threaded rod (122) passing through and threadedly arranged on one side of each of the two positioning frames (121), the two threaded rods (122) being arranged relative to each other, and a clamping plate (123) is provided on one end of each of the threaded rods (122) placed inside the positioning frame (121).

3. The nonwoven fabric tear detection device according to claim 2, wherein: The pulling assembly includes a push plate (33) slidably arranged between the two guide rods (32), the push plate (33) contacts and cooperates with the protruding end (241), an elastic member (34) is provided between the push plate (33) and the inner wall of the support frame (3), a pulley (35) is rotated at the rear end of the support frame (3), a pull rope (36) is wound around the pulley (35), and the two ends of the pull rope (36) are respectively connected to the cutter (31) and the push plate (33).

4. The nonwoven fabric tear detection device according to claim 3, wherein: It also includes a limiting plate (221), each of the guide sleeves (22) is provided with a limiting plate (221) for assisting in fixing the sample cloth (100), and each of the sliding frames (24) is provided with auxiliary wheels (25) arranged in a rotational arrangement on the sides close to each other.

5. The nonwoven fabric tear detection device according to claim 4, wherein: The sliding frame (24) further comprises a cross bar (4), both sides of the front end of the sliding frame (24) are provided with cross bars (4), the ends of the lower cross bars (4) are provided with a chiming block (41), the ends of the upper cross bars (4) are provided with a bracket (42), both ends of the bracket (42) are slidably provided with a buckle plate (43), a second elastic member (44) is provided between the buckle plate (43) and the corresponding bracket (42), and the buckle plate (43) on the same side is buckled and matched with the corresponding chiming block (41).

6. The nonwoven fabric tear detection device according to claim 5, characterized in that: The vertical plate (10) further comprises a sleeve (5), wherein the sleeve (5) is provided on both the left and right sides of the vertical plate (10), and an extension rod (51) is slidably inserted into each of the sleeves (5) on both sides, and a Velcro (53) for bonding and fixing the sample cloth (100) is sleeved on the extension rod (51), and a moving block (52) slidably connected to the installation frame (20) is provided at the rear end of each extension rod (51).

7. The nonwoven fabric tear detection device according to claim 6, wherein: It also includes a horizontal frame (6), the horizontal frame (6) is provided on the lower side of the front of the vertical plate (10), a hinged frame (61) in a bent shape is hingedly provided between the two ends of the horizontal frame (6), and a support plate (62) for supporting the sample cloth (100) is provided at the end of the hinged frame (61).

8. The nonwoven fabric tear detection device according to claim 7, wherein: It also includes an insertion rod (63), and both sides of the hinged frame (61) are slidably provided with an insertion rod (63) that is plugged into and cooperates with the vertical plate (10), and a plate body is provided on the insertion rod (63), and an elastic member three (64) is provided between the plate body and the hinged frame (61), and a holding frame (631) is provided at the end of the insertion rod (63).

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