Device for detecting the tear resistance of a garment fabric

Abstract

This invention provides a tear resistance testing device for clothing fabrics, belonging to the technical field of fabric testing equipment. The device includes a horizontal plate, a left and right trouser leg plate located at the bottom of the horizontal plate, and a strength testing device. The strength testing device includes: a support assembly: the support assembly includes a base, a column, and a horizontal plate mounted on the column, the horizontal plate being used to suspend the sample trousers to be tested; a power mechanism: the power mechanism is located below the horizontal plate, including a power source and a transmission gear set driven by the power source. By suspending the sample trousers to be tested using the support assembly, and using the power mechanism to drive the swing transmission assembly, the lever causes the left and right trouser leg plates to swing back and forth relative to each other, thereby simulating the relative movement of the legs when a person walks. This process can apply dynamic, cyclic tensile force to the crotch, seams, and fabric of the trouser sample, more realistically restoring the stress state of clothing under actual wear.

Description

Technical Field

[0001] This invention belongs to the technical field of fabric testing equipment, specifically relating to a device for testing the tear resistance of clothing fabrics. Background Technology

[0002] For clothing fabrics, especially trousers and other garments involving frequent lower limb movement, tear resistance is a crucial indicator of product quality. During wear, actions such as walking and squatting subject the fabric, particularly in areas like the crotch and side seams, to complex stretching and tearing forces. Insufficient tear resistance can easily lead to garment damage, affecting its lifespan and wearing experience.

[0003] Currently, most existing fabric tear resistance testing equipment uses universal testing machines for unidirectional tensile testing, such as the trouser-type specimen method or the tongue-shaped specimen method. While these methods provide standard mechanical data, their testing procedures are typically static or quasi-static, involving tensile testing in a single direction. This makes it difficult to realistically simulate the multidimensional, cyclical, and changing complex stress states experienced by the fabric during actual wear, especially during dynamic movements like walking. Therefore, existing testing devices cannot accurately reflect the tear resistance performance of clothing under actual wearing conditions, leading to discrepancies between test results and actual conditions, and failing to meet the needs for assessing the dynamic durability of clothing. Summary of the Invention

[0004] The purpose of this invention is to provide a tear resistance testing device for clothing fabrics, aiming to solve the problem that the existing testing methods are usually static or quasi-static unidirectional tension, which is difficult to accurately reflect the tear resistance performance of clothing under actual wearing conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tear resistance testing device for clothing fabrics, comprising: a horizontal plate, a left trouser leg plate and a right trouser leg plate disposed at the bottom of the horizontal plate, and a strength testing device, wherein the strength testing device comprises: Support assembly: The support assembly includes a base, a column, and a horizontal plate mounted on the column, the horizontal plate being used to suspend the sample pants to be tested; Power mechanism: The power mechanism is located below the horizontal plate and includes a power source and a transmission gear set driven by the power source; Swing transmission assembly: The swing transmission assembly includes a lever disposed below the horizontal plate and a rotating shaft mounted on the horizontal plate. The power mechanism drives the lever to swing left and right around the rotating shaft. The left and right ends of the lever are respectively connected to the left and right pant leg plates, thereby driving the left and right pant leg plates to swing back and forth relative to each other to simulate walking action, so as to perform stretching test on the sample pants.

[0006] As a tear resistance testing device for the garment fabric of the present invention, preferably, a sensor structure is provided at the contact position between the lever and the sample pants. The sensor structure is used to monitor the pressure signal applied by the lever to the sample pants, so that the lever can continuously apply a stable tension to the sample pants.

[0007] As a tear resistance testing device for clothing fabrics of the present invention, preferably, the sensor structure includes a first connecting rod, a second connecting rod and an S-shaped pressure sensor, the first connecting rod is connected to a lever, the second connecting rod is connected to its corresponding trouser leg plate, and the S-shaped pressure sensor is disposed at the connection between the first connecting rod and the second connecting rod; The column is equipped with a control panel, which is connected to the power mechanism and to the S-type pressure sensor.

[0008] As a tear resistance testing device for clothing fabrics of the present invention, preferably, a first fisheye bearing is provided at one end of the first connecting rod facing the lever, and mounting holes for installing the first fisheye bearing are opened at both ends of the lever, and the first fisheye bearing is installed inside the mounting holes through a shaft. The left and right trouser leg panels are equipped with mounting seats at the ends facing the lever. A second fisheye bearing is provided on the second connecting rod, and the second fisheye bearing is connected to the mounting seat through a shaft.

[0009] As a tear resistance testing device for clothing fabrics of the present invention, preferably, the bottom of the rotating shaft is rotatably mounted in the middle position of the lever, and a drive shaft is rotatably mounted inside the rotating shaft, and the drive shaft is connected to a transmission gear set; The lever is equipped with a telescopic drive structure. The transmission gear set drives the drive shaft to rotate, which in turn drives the telescopic drive structure to move. The telescopic drive structure can adjust the lever to swing left and right.

[0010] As a tear resistance testing device for clothing fabrics of the present invention, preferably, the telescopic drive structure includes a bevel gear set and a lead screw nut structure installed inside the lever, the end of the drive shaft is connected to the input end of the bevel gear set, and the output end of the bevel gear set is connected to the input end of the lead screw nut structure; The lever has a groove inside, and a slider slides inside the groove. A screw and nut structure is connected to the slider, and the screw and nut structure drives the slider inside the lever to move away from the axis of rotation, thereby adjusting the swing amplitude of the lever.

[0011] As a tear resistance testing device for clothing fabrics of the present invention, preferably, the bevel gear set includes an active bevel gear and a driven bevel gear rotatably installed inside the lever, the active bevel gear meshing with the driven bevel gear, the drive shaft rotatably extending into one end of the lever and connecting to the active bevel gear, and the driven bevel gear connecting to the lead screw nut structure.

[0012] As a tear resistance testing device for clothing fabrics of the present invention, preferably, the lead screw and nut structure includes a lead screw rotatably installed inside the slide groove, the lead screw being connected to a driven bevel gear, a nut being threaded onto the lead screw, and the nut being rotatably connected to the slider.

[0013] As a tear resistance testing device for clothing fabrics of the present invention, preferably, the transmission gear set includes a driving gear and a driven gear rotatably mounted on a horizontal plate, the driving gear meshing with the driven gear, the power source being a drive motor mounted at the bottom of the horizontal plate, the drive shaft being connected to the driven gear, and the output end of the drive motor being connected to the driving gear.

[0014] As a tear resistance testing device for clothing fabrics of the present invention, preferably, L-shaped plates are installed on the column at intervals on the left and right, and the horizontal plate is installed at the bottom of the L-shaped plates.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The tear resistance testing device for this garment fabric suspends the sample trousers under test using a support assembly and utilizes a power mechanism to drive a swing transmission assembly, causing the levers to swing the left and right trouser leg panels back and forth relative to each other, thereby simulating the relative movement of the legs when a person walks. This process applies dynamic and cyclic tensile forces to the crotch, seams, and fabric of the trouser sample, more realistically reproducing the stress state experienced by the garment in actual wear.

[0016] 2. The tear resistance testing device for this garment fabric, through the setting of a sensor structure, can monitor and provide feedback on tensile force in real time, ensuring that a stable tension can be applied to the sample pants, thereby improving the accuracy and reliability of the test results.

[0017] 3. The tear resistance testing device for this garment fabric, by setting a telescopic drive structure, can adjust the swing amplitude of the lever, thereby simulating different walking states and meeting the testing needs of different styles and uses of garments, thus expanding the applicability of the device. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of a specific embodiment of the present invention; Figure 2 This is a side view of the horizontal plate and the swing transmission assembly in a specific embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA; Figure 4 for Figure 3 Enlarged structural diagram at point B; Figure 5 for Figure 1 A magnified structural diagram at point C.

[0019] In the diagram: 1. Horizontal plate; 10. Left trouser leg plate; 11. Right trouser leg plate; 2. Strength testing device; 3. Support assembly; 31. Base; 32. Column; 33. L-shaped plate; 4. Power mechanism; 41. Driving gear; 42. Driven gear; 43. Drive motor; 5. Swing transmission assembly; 51. Lever; 52. Rotating shaft; 53. Drive shaft; 54. Slider; 55. Driving bevel gear; 56. Driven bevel gear; 57. Lead screw; 571. Nut; 6. Sensor structure; 61. First connecting rod; 62. Second connecting rod; 63. S-shaped pressure sensor; 64. First fisheye bearing; 65. Second fisheye bearing. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-5 The present invention provides the following technical solution: a tear resistance testing device for clothing fabric, including a horizontal plate 1, a left trouser leg plate 10, a right trouser leg plate 11 and a strength testing device 2. The strength testing device 2 is the core part, used to perform the testing action, and specifically includes a support assembly 3, a power mechanism 4 and a swing transmission assembly 5.

[0022] The support assembly 3 is used to support and fix the sample pants to be tested. The support assembly 3 includes a base 31 and a column 32 vertically fixed on the base 31. L-shaped plates 33 are installed on the column 32 at intervals on the left and right. A horizontal plate 1 is installed at the bottom of the L-shaped plate 33. The sample pants to be tested (e.g., a pair of pants) are fixed on the horizontal plate 33 by clamping or suspending their waist, so that they hang down naturally. The two pant legs correspond to the positions of the left pant leg plate 10 and the right pant leg plate 11, respectively.

[0023] The power mechanism 4 is located below the horizontal plate 1. The mechanism includes a drive motor 43 as a power source and a transmission gear set driven by the drive motor 43. The transmission gear set includes a driving gear 41 and a driven gear 42 that mesh with each other. The output end of the drive motor 43 is connected to the driving gear 41.

[0024] The swing transmission assembly 5 is key to achieving the simulated walking motion. It includes a lever 51 and a rotating shaft 52. The lever 51 is located below the horizontal plate 1, and the top of the rotating shaft 52 is installed inside the horizontal plate 1. The bottom of the rotating shaft 52 is rotatably connected to the middle of the lever 51 via a bearing. The power mechanism 4 drives the lever 51, enabling it to swing left and right around the rotating shaft 52.

[0025] The left and right ends of lever 51 are connected to the left trouser leg plate 10 and the right trouser leg plate 11 respectively through sensor structure 6. The swinging of lever 51 causes the left trouser leg plate 10 and the right trouser leg plate 11 to swing back and forth relative to each other. This movement simulates the alternating forward and backward extension and pushing motion of the two legs when the human body walks, thereby generating periodic stretching and tearing effects on the sample trousers suspended on the horizontal plate 33, especially at the crotch and leg seams, thus achieving dynamic detection.

[0026] The sensor structure 6 is used to monitor the tension or pressure signal applied by the lever 51 to the sample pants through the pant leg plate in real time, and feed the signal back to the control panel to ensure that the lever 51 can continuously apply a preset and stable tension to the sample pants, and avoid unstable detection force due to material relaxation or motion inertia. The sensor structure 6 is set at the connection between the lever 51 and the sample pants.

[0027] Please see Figure 3 and Figure 5 The sensor structure 6 includes a first link 61, a second link 62, and an S-shaped pressure sensor 63. One end of the first link 61 is connected to the end of the lever 51, and one end of the second link 62 is connected to the corresponding leg panel (left leg panel 10 or right leg panel 11). The S-shaped pressure sensor 63 is precisely connected between the first link 61 and the second link 62. When the lever 51 swings, the force is transmitted to the leg panel through the first link 61, the S-shaped pressure sensor 63, and the second link 62. The S-shaped pressure sensor 63 can accurately measure the magnitude of this force. A control panel (not shown in the figure) is provided on the column 32. This control panel is electrically connected to the drive motor 43 and signal-connected to the S-shaped pressure sensor 63. The control panel receives the signal from the S-shaped pressure sensor 63 and adjusts the output of the drive motor 43 in real time according to the preset tension value, thereby forming a closed-loop control to ensure that the tension applied to the sample pants remains constant.

[0028] To ensure flexibility of movement and accuracy of measurement, a joint bearing structure is used at the connection point. A first fisheye bearing 64 is installed at the end of the first connecting rod 61 facing the lever 51. Mounting holes are provided at both ends of the lever 51, and the first fisheye bearing 64 is mounted in the mounting holes via a shaft, forming a universal joint. Similarly, mounting seats are installed at the ends of the left and right trouser leg plates 10 and 11 facing the lever 51, and a second fisheye bearing 65 is installed on the second connecting rod 62, which is connected to the mounting seat via a shaft. This connection method allows the connecting rod to swing slightly in multiple directions, avoiding additional stress caused by motion interference and ensuring the accuracy of sensor readings.

[0029] The rotating shaft 52 has a hollow internal structure, in which a drive shaft 53 is rotatably mounted. The top end of the drive shaft 53 is connected to the driven gear 42 of the transmission gear set. The lever 51 has a telescopic drive structure inside, which, driven by the drive shaft 53, can cause the lever 51 to swing left and right.

[0030] The telescopic drive structure includes a bevel gear set and a lead screw and nut structure installed inside the lever 51. The end of the drive shaft 53 extends into the lever 51 and connects to the driving bevel gear 55. The driving bevel gear 55 meshes with the driven bevel gear 56 to form a bevel gear set, used to change the transmission direction. The driven bevel gear 56 is connected to the lead screw 57. The lead screw 57 is rotatably mounted in a groove opened inside the lever 51, and a nut 571 is threaded onto it. The nut 571 is rotatably connected to a slider 54 that is slidably disposed in the groove.

[0031] Please see Figure 1-3 During operation, the rotation of the driven gear 42 drives the drive shaft 53 to rotate. The drive shaft 53 drives the lead screw 57 to rotate via the driving bevel gear 55 and the driven bevel gear 56. The rotation of the lead screw 57 drives the nut 571 to move axially along the lead screw 57. The nut 571 then pushes the slider 54 to slide in the groove. The movement of the slider 54 in the groove gives the lever 51 a radial driving force, enabling the lever 51 to rotate around the pivot 52. The left and right swing of the lever 51 is achieved by the forward and reverse rotation of the drive motor 43.

[0032] Meanwhile, since the relative position of the slider 54 and the pivot point (i.e., the pivot 52) ​​of the lever 51 has changed, the effective lever arm length of the lever 51 has actually changed, which in turn changes the swing arc of the lever 51. The farther the slider 54 is from the pivot 52, the larger the swing arc of the lever 51. The swing arc of the lever 51 is controlled by the moving distance of the slider 54.

[0033] Please see Figure 1-5Working principle: Before testing begins, the operator fixes the waist of the sample pants to be tested onto the horizontal plate 33, allowing the pants to hang naturally. The left pant leg is placed on the left pant leg plate 10, and the right pant leg is placed on the right pant leg plate 11, ensuring the pants are in a suitable initial stretch state. The operator then sets the required testing parameters through the control panel.

[0034] After the test is started, the drive motor 43 begins to operate, and its output end drives the drive gear 41 to rotate. The drive gear 41 drives the driven gear 42, which meshes with it, to rotate. The rotation of the driven gear 42 drives the drive shaft 53 to rotate, and the drive shaft 53 drives the lead screw 57 to rotate through the transmission of the drive bevel gear 55 and the driven bevel gear 56. The rotation of the lead screw 57 drives the nut 571 to move along the axial direction of the lead screw 57, and the nut 571 in turn pushes the slider 54 to slide in the groove. The sliding of the slider 54 provides the driving force for the lever 51 to swing, pushing the lever 51 to swing around the pivot 52. Through the forward and reverse control of the drive motor 43, the slider 54 slides back and forth in the groove, thereby driving the lever 51 to swing back and forth.

[0035] Meanwhile, since the relative position of the swing center (i.e., the pivot 52) ​​of the slider 54 and the lever 51 can be adjusted by the lead screw and nut structure, when the initial position of the slider 54 in the groove changes, the effective lever arm length of the lever 51 also changes accordingly, thereby realizing the adjustment of the swing amplitude of the lever 51. In this way, the operator can precisely control the position of the slider 54 by controlling the number of rotations or the angle of the drive motor 43, and thus adjust the swing amplitude of the trouser leg plate to simulate walking movements with different amplitudes.

[0036] When lever 51 swings left and right, its two ends transmit power to the left trouser leg 10 and the right trouser leg 11 through the first connecting rod 61, the S-shaped pressure sensor 63, and the second connecting rod 62, causing the two trouser leg plates to move back and forth relative to each other. This movement accurately simulates the alternating stepping motion of the legs when the human body walks, applying dynamic and cyclical tensile force to the crotch, seams, and fabric of the sample trousers.

[0037] During the testing process, the S-type pressure sensor 63 collects the tension value applied to the sample pants in real time and feeds the signal back to the control panel. The control panel compares the feedback value with a preset constant tension value and adjusts the speed or output torque of the drive motor 43 in real time, forming a closed-loop control to ensure that the tension on the sample pants remains stable throughout the testing process. When the test reaches the preset number of cycles or the sample pants tear, the drive motor 43 stops running, and the test is complete. The operator can evaluate the tear resistance of the sample pants fabric by observing the tearing condition of the sample pants or recording the tension change curve during the testing process.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tear resistance testing device for clothing fabrics, comprising: A horizontal board, a left trouser leg panel and a right trouser leg panel disposed at the bottom of the horizontal board, and a strength testing device, characterized in that the strength testing device comprises: Support assembly: The support assembly includes a base, a column, and a horizontal plate mounted on the column, the horizontal plate being used to suspend the sample pants to be tested; Power mechanism: The power mechanism is located below the horizontal plate and includes a power source and a transmission gear set driven by the power source; Swing transmission assembly: The swing transmission assembly includes a lever disposed below the horizontal plate and a rotating shaft mounted on the horizontal plate. The power mechanism drives the lever to swing left and right around the rotating shaft. The left and right ends of the lever are respectively connected to the left and right pant leg plates, thereby driving the left and right pant leg plates to swing back and forth relative to each other to simulate walking action, so as to perform stretching test on the sample pants.

2. The tear resistance testing device for clothing fabrics according to claim 1, characterized in that: A sensor structure is provided at the contact position between the lever and the sample pants. The sensor structure is used to monitor the pressure signal applied by the lever to the sample pants, so that the lever can continuously apply a stable tension to the sample pants.

3. The tear resistance testing device for clothing fabrics according to claim 2, characterized in that: The sensor structure includes a first link, a second link, and an S-shaped pressure sensor. The first link is connected to a lever, the second link is connected to its corresponding trouser leg plate, and the S-shaped pressure sensor is located at the connection between the first link and the second link. The column is equipped with a control panel, which is connected to the power mechanism and to the S-type pressure sensor.

4. The tear resistance testing device for clothing fabrics according to claim 3, characterized in that: The first connecting rod is provided with a first fisheye bearing at one end facing the lever, and mounting holes for installing the first fisheye bearing are opened at both ends of the lever. The first fisheye bearing is installed inside the mounting holes through a shaft. The left and right trouser leg panels are equipped with mounting seats at the ends facing the lever. A second fisheye bearing is provided on the second connecting rod, and the second fisheye bearing is connected to the mounting seat through a shaft.

5. The tear resistance testing device for clothing fabrics according to claim 1, characterized in that: The bottom of the rotating shaft is rotatably mounted in the middle position of the lever, and a drive shaft is rotatably mounted inside the rotating shaft. The drive shaft is connected to a transmission gear set. The lever is equipped with a telescopic drive structure. The transmission gear set drives the drive shaft to rotate, which in turn drives the telescopic drive structure to move. The telescopic drive structure can adjust the lever to swing left and right.

6. The tear resistance testing device for clothing fabrics according to claim 5, characterized in that: The telescopic drive structure includes a bevel gear set and a lead screw and nut structure installed inside the lever. The end of the drive shaft is connected to the input end of the bevel gear set, and the output end of the bevel gear set is connected to the input end of the lead screw and nut structure. The lever has a groove inside, and a slider slides inside the groove. A screw and nut structure is connected to the slider, and the screw and nut structure drives the slider inside the lever to move away from the axis of rotation, thereby adjusting the swing amplitude of the lever.

7. The tear resistance testing device for clothing fabrics according to claim 6, characterized in that: The bevel gear set includes a driving bevel gear and a driven bevel gear rotatably mounted inside the lever. The driving bevel gear meshes with the driven bevel gear. The drive shaft rotatably extends into one end of the lever and connects to the driving bevel gear. The driven bevel gear is connected to the lead screw nut structure.

8. The tear resistance testing device for clothing fabrics according to claim 7, characterized in that: The lead screw and nut structure includes a lead screw rotatably mounted inside a slide groove, the lead screw being connected to a driven bevel gear, a nut being threaded onto the lead screw, and the nut being rotatably connected to a slider.

9. The tear resistance testing device for clothing fabrics according to claim 5, characterized in that: The transmission gear set includes a driving gear and a driven gear rotatably mounted on the horizontal plate. The driving gear meshes with the driven gear. The power source is a drive motor mounted on the bottom of the horizontal plate. The drive shaft is connected to the driven gear, and the output end of the drive motor is connected to the driving gear.

10. The tear resistance testing device for clothing fabrics according to claim 1, characterized in that: The column is equipped with L-shaped plates spaced apart on the left and right, and the horizontal plate is installed at the bottom of the L-shaped plates.

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