A new energy automobile roof artificial leather fabric toughness detection device

Abstract

The present application relates to the technical field of detection, in particular to a new energy automobile roof artificial leather fabric toughness detection device, which comprises an integrated detection table, a tearing detection unit, a tensile detection unit and a folding resistance detection unit driven and operated by a single main control motor; the main control motor transmits power to the tearing detection unit and the folding resistance detection unit through bevel gear I, bevel gear II, transmission belt I, transmission belt II and transmission shaft, the tensile detection unit is connected with the tearing detection unit and runs synchronously with the tearing detection unit; the tearing detection unit detects the tearing of the fabric through a tearing cutter, the tensile detection unit detects the tensile of the fabric through a fabric fixing and clamping assembly and a fabric moving and clamping assembly, and the folding resistance detection unit detects the folding resistance of the fabric through a multi-stage folding assembly. The present application can complete tearing, tensile and folding resistance detection on the same device.

Description

Technical Field

[0001] This invention relates to the field of testing technology, specifically a device for testing the toughness of artificial leather fabric for the headliner of new energy vehicles. Background Technology

[0002] The artificial leather fabric for the headliner of new energy vehicles is usually made of high-performance environmentally friendly base materials, which are lightweight and have low volatile organic compound (VOC) emission characteristics, meeting the stringent standards for in-vehicle air quality. Its surface simulates the texture and breathability of genuine leather through embossing or microfiber processes, while also having excellent weather resistance, flame retardancy, stain resistance and easy cleaning ability. Combined with a delicate matte color and feel, it can not only enhance the technological and luxurious atmosphere of the cabin, but also meet the design requirements of new energy vehicles for sustainable materials and weight reduction throughout the entire life cycle.

[0003] Before leaving the factory, these types of synthetic leather fabrics need to undergo toughness testing. This "toughness" test is usually not a single indicator, but a combination of tests that simulate real-world usage scenarios. It mainly assesses the material's tensile strength, tear resistance, and flexural strength, which is crucial for ensuring product durability.

[0004] Each test, including tensile, tear, and flexural endurance, requires specialized tools. For example, tensile testing requires an electronic tensile testing machine, and flexural endurance testing requires a flexural endurance testing machine. Since each testing machine operates on different principles and types, the appropriate testing tools must be configured step-by-step and distributed during the toughness testing of synthetic leather fabrics. This results in significant testing costs and time consumption, making efficient and rapid toughness testing impossible.

[0005] In view of this, this technical solution designs a device that integrates multiple detection functions to solve the above-mentioned problems. Summary of the Invention

[0006] The purpose of this invention is to provide a device for testing the toughness of artificial leather fabric for the roof of new energy vehicles, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a toughness testing device for artificial leather fabric for the roof of a new energy vehicle, comprising an integrated testing platform, wherein the integrated testing platform is provided with a tear testing unit, a tensile testing unit and a folding resistance testing unit controlled and driven by a single main control motor; The tear testing unit, tensile testing unit, and folding resistance testing unit are used to test the tear toughness, tensile toughness, and folding resistance of the artificial leather fabric for the headliner of new energy vehicles, respectively. The main control motor is connected to the power ends of the tear detection unit and the folding resistance detection unit through a multi-stage transmission assembly, and is used to synchronously control the operation of the tear detection unit and the folding resistance detection unit. The tensile testing unit and the tear testing unit are connected and set up so that the tensile testing unit runs synchronously with the tear testing unit.

[0008] As a further aspect of the present invention: the multi-stage transmission assembly includes a bevel gear I connected to the output end of the main control motor, and a bevel gear II is perpendicularly meshed on one side of the bevel gear I; The bevel gear II has gear shafts installed on both sides at the center. One end of the gear shaft is connected to the power end of the tear detection unit, and the other end of the gear shaft is rotatably connected to the power end of the bending resistance detection unit through the transmission belt I and the pulley. The tear detection unit is also rotatably connected to the gear shaft on one side of the bevel gear II via a transmission shaft, transmission belt II, and pulley.

[0009] As a further aspect of the present invention: the tear detection unit includes a linear moving base I fixed to an integrated detection table by a support plate, a sliding base I slidably disposed in the linear moving base I, and a ball nut I installed on the upper side of the sliding base I; The ball nut I is threadedly connected to the ball screw I. The ball screw I has screw shafts installed at both ends. The screw shafts are supported and positioned on the linear motion base I by the support rod. The end of the screw shaft facing the multi-stage transmission assembly is connected to the gear shaft on the side of the bevel gear II. A rack base is installed on the top of the ball nut I. The rack base has a rack base groove that is perpendicular to the linear moving base I. The rack base groove is open at both ends and the rack base is slidably connected inside. A rack is installed on the upper side of the rack base. Two positioning collars are symmetrically installed on both sides of the top of the rack base. A slide rod I is rotatably set between the two positioning collars. A spur gear is fitted on the slide rod I at the position corresponding to the rack. The bottom of the spur gear meshes with the rack. A positioning key parallel to the axis of slide rod I is installed on the outer circumferential wall of slide rod I. A positioning slide rail is provided on the inner wall of the spur gear corresponding to the positioning key. The positioning key moves axially along the positioning slide rail. Guide rods are symmetrically installed at both ends of slide rod I. The guide rods at both ends are positioned on the linear moving base I by support rods. The end of the guide rod facing the multi-stage transmission assembly is connected to a transmission shaft.

[0010] As a further aspect of the present invention: a tear detection component is provided at the bottom end of the rack via a limiting rotation connector; The tear detection assembly includes a slide block I connected to the bottom of the limiting rotation connector. A swing slide rod is slidably connected to the center of the slide block I. A cylinder is installed on the side wall of the slide block I through a connecting plate. A piston rod is provided at the telescopic end of the cylinder. A mounting base is installed at the end of the piston rod. A tear cutter is detachably installed on one side of the mounting base. A connecting plate is installed at one end of the swing slide bar, and a support column is rotatably connected to the bottom of the connecting plate through a limiting rotating connector. The bottom of the support column is fixed to the integrated testing platform. The other end of the swing slide rod is equipped with an L-shaped connecting rod. The end of the L-shaped connecting rod extends and passes through a sleeve column. The bottom of the sleeve column is rotatably connected to the slide block II through a limiting rotary connector. A slide rod II is slidably connected at the center of the slide block II. Guide rods are installed at both ends of the slide rod II. The guide rods are all supported and positioned by positioning sleeve rods. The bottom of the positioning sleeve rods are jointly installed on the linear moving base II. A sliding base block II is installed at the bottom of the slide block II. The sliding base block II is slidably connected inside the linear moving base II.

[0011] As a further aspect of the present invention: the limiting rotation connector includes a limiting rotation column and a limiting rotation hole column, the limiting rotation column is rotatably connected to the top of the limiting rotation column, the limiting rotation column rotates inside the limiting rotation hole column, and the limiting rotation column and the limiting rotation hole column are restricted from disengaging.

[0012] As a further embodiment of the present invention: the mounting base and the tearing cutter are detachably connected by bolt pressure plate, dovetail groove insertion, T-slot locking, or positioning pin plus bolt.

[0013] As a further aspect of the present invention: the tensile testing unit includes a fabric moving clamping assembly fixed to one side of the ball nut I by a connecting plate, the fabric moving clamping assembly being suspended in the air; A fabric moving clamping assembly is positioned opposite the connecting plate on one side, and the bottom of the fabric fixing clamping assembly is fixed to the integrated testing table via a support plate. When the ball nut I moves, it synchronously drives the fabric moving clamping assembly to move, which is used to adjust the distance between the fabric moving clamping assembly and the fabric fixing clamping assembly.

[0014] As a further aspect of the present invention: the flexural strength testing unit includes a linear moving base III that is fixed to one side of the linear moving base I by a support plate and is parallel to the linear moving base I; Two sets of ball screws II are symmetrically arranged on both sides of the upper part of the linear moving base III. The opposite ends of the two sets of ball screws II are fixedly connected by a connecting shaft. The tooth grooves of the two sets of ball screws II are opposite, and each set of ball screws II is threaded with a ball nut II. Screw shafts are installed at the ends of the ball screws II that are far apart from each other. The screw shafts are positioned on the linear motion base III by a support rod, and the end of the screw shaft located on the side of the main control motor is connected to the transmission belt I by a pulley. Both sides of the ball bearing nuts II have a set of multi-stage folding components installed on the same side via a fixing rod.

[0015] As a further embodiment of the present invention: the multi-level folding assembly includes a folding plate with a right-angled trapezoidal structure placed on the side, and the side wall of the folding plate is fixedly connected to the fixing rod; Fabric clamping assembly II is provided on the vertical sidewalls of the two folding plates that are close to each other. Fabric clamping assembly II is used to clamp and fix the artificial leather fabric of the roof of new energy vehicles. Multiple triangular strips are evenly arranged on the inclined surface of the folding plate. The triangular strips are spaced apart along the inclined surface of the folding plate, and the multiple triangular strips are arranged parallel to each other.

[0016] As a further embodiment of the present invention: the fabric clamping assembly I, the fabric fixing clamping assembly, the fabric moving clamping assembly and the fabric clamping assembly II have the same structural principle; Fabric clamping assembly II includes a fixed clamping plate fixed to the vertical side wall of the folding plate, a movable clamping plate movably disposed on the upper side of the fixed clamping plate, sliders installed at both ends of the movable clamping plate facing the side wall of the folding plate, and slide rails opened on the side wall of the folding plate corresponding to the sliders, and the sliders slide along the inside of the slide rails for limiting. Bolt holes are provided at corresponding positions on the fixed clamp and the movable clamp. The bolt holes are used to fasten the bolts, which are then used to fix and clamp the artificial leather fabric of the new energy vehicle roof placed between the fixed clamp and the movable clamp.

[0017] Compared with the prior art, the beneficial effects of the present invention are: by integrating a tear testing unit, a tensile testing unit, and a folding endurance testing unit on an integrated testing platform, and by using a single main control motor in conjunction with bevel gear I, bevel gear II, transmission belt I, transmission belt II, and transmission shaft to achieve power transmission of multiple testing units, the artificial leather fabric for the headliner of new energy vehicles can complete the tear toughness, tensile toughness, and folding endurance performance tests in the same device, reducing the cost and testing time caused by configuring testing tools separately; By connecting the tensile testing unit and the tear testing unit and running synchronously with the tear testing unit, the folding resistance testing unit drives the multi-stage folding components on both sides to move relative to each other through two sets of ball screws II with opposite tooth groove directions, which improves the power utilization rate, structural compactness and testing continuity, making the device more suitable for comprehensive toughness testing of artificial leather fabrics for new energy vehicle roofs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a device for testing the toughness of artificial leather fabric for the roof of a new energy vehicle.

[0019] Figure 2 This is a two-dimensional structural diagram of a device for testing the toughness of artificial leather fabric for the roof of a new energy vehicle.

[0020] Figure 3 This is a top view schematic diagram of a device for testing the toughness of artificial leather fabric for the roof of a new energy vehicle.

[0021] Figure 4This is a schematic diagram of the limiting rotating connector in a device for testing the toughness of artificial leather fabric for the roof of a new energy vehicle.

[0022] Figure 5 for Figure 2 A magnified structural diagram of A in the diagram.

[0023] Figure 6 for Figure 1 A magnified structural diagram of B in the diagram.

[0024] Figure 7 for Figure 2 A magnified structural diagram of C.

[0025] Figure 8 for Figure 1 A magnified structural diagram of D in the diagram.

[0026] Figure 9 This is a schematic diagram of the structure of a multi-stage folding component in a device for testing the toughness of artificial leather fabric for the roof of a new energy vehicle.

[0027] Among them: integrated testing table 1, main control motor 2, bevel gear I 3, bevel gear II 4, transmission belt I 5, transmission belt II 6, transmission shaft 7, limit rotation hole column 11, fixed clamping plate 12, moving clamping plate 13, slide rail 14, slider 15, bolt hole 16, limit rotation column 17, limit rotation connecting piece 18. Tear detection unit 10, linear movement base I 100, sliding base I 101, ball nut I 102, ball screw I 103, positioning collar 104, slide rod I 105, positioning key 106, spur gear 107, rack 108, rack base groove 109, rack base 110, slide I 112, swing slide rod 113, cylinder 114, piston rod 115, mounting base 116, tear cutter 117, L-shaped connecting rod 118, sleeve 119, slide rod II 120, linear movement base II 121, slide II 122, positioning sleeve 123, sliding base II 124, fabric clamping assembly I 125, connecting plate 126; Tensile testing unit 20, fabric fixing clamping assembly 200, fabric moving clamping assembly 201, connecting plate 202; Folding resistance testing unit 30, linear moving base Ⅲ 300, ball screw Ⅱ 301, connecting shaft 302, ball nut Ⅱ 303, fixing rod 304, multi-stage folding assembly 305, folding plate 306, triangular strip 307, fabric clamping assembly Ⅱ 308. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] Please see Figures 1-3 A toughness testing device for artificial leather fabric for the roof of a new energy vehicle includes an integrated testing platform 1, on which a tear testing unit 10, a tensile testing unit 20 and a folding resistance testing unit 30 are installed and driven by a single main control motor 2. Tear testing unit 10, tensile testing unit 20, and folding resistance testing unit 30 are used to test the tear toughness, tensile toughness, and folding resistance of artificial leather fabric for the roof of new energy vehicles, respectively. The main control motor 2 is connected to the power end of the tear detection unit 10 and the flexural strength detection unit 30 through a multi-stage transmission assembly, and is used to synchronously control the operation of the tear detection unit 10 and the flexural strength detection unit 30. The tensile detection unit 20 is connected to the tear detection unit 10 and runs synchronously with the tear detection unit 10, thereby realizing the operation of a single motor and the detection mode of synchronous operation in conjunction with the integrated design of multiple detection units.

[0033] Preferably, the integrated testing station is a rectangular frame or box-type platform structure, which can be made of Q235 steel, 45 steel, cast aluminum alloy or 6061 aluminum alloy. The surface can be powder coated, anodized, blackened or galvanized to improve corrosion resistance and overall rigidity. The main control motor 2 is configured as a servo motor, stepper motor, or AC speed-regulating motor with a reducer, with a preferred power of 400W-1500W and a preferred speed of 300r / min-3000r / min. When precise control of tearing speed, stretching speed, and folding frequency is required, a servo motor with an encoder is preferred. The main control motor 2 is electrically connected to the PLC controller, touch screen, speed sensor, displacement sensor, and force acquisition module to control the detection speed, detection stroke, and number of detections, and to record the detection data. Specifically, such as Figure 8 As shown, the multi-stage transmission assembly includes a bevel gear I3 connected to the output end of the main control motor 2. A bevel gear II4 is vertically meshed on one side of the bevel gear I3. Gear shafts are installed on both sides of the center of the bevel gear II4. One end of the gear shaft is connected to the power end of the tear detection unit 10, and the other end of the gear shaft is rotatably connected to the power end of the flexural strength detection unit 30 through the transmission belt 5 and pulley. In this way, the rotational kinetic energy of the main control motor 2 is transmitted to the tear detection unit 10 and the flexural strength detection unit 30 at the same time, ensuring the effective transmission and utilization of kinetic energy.

[0034] Preferably, bevel gear I3 is keyed or connected to the output shaft of the main control motor 2 via a coupling, and bevel gear II4 meshes perpendicularly with bevel gear I3; bevel gear I3 and bevel gear II4 are preferably made of 45 steel, 40Cr steel or 20CrMnTi carburized steel, with a tooth surface hardness of HRC45-HRC62, a module of 1.5-4, and a number of teeth of 16-40.

[0035] Transmission belts I5 and II6 are preferably synchronous belts, with models such as HTD-5M, HTD-8M, S5M, or S8M available to reduce slippage and ensure synchronous transmission accuracy.

[0036] like Figure 1 , Figure 2 , Figures 5-8As shown, the tear detection unit 10 includes a linear moving base I100 fixed to an integrated detection table 1 by a support plate. A sliding block I101 is slidably disposed in the linear moving base I100. A ball nut I102 is installed on the upper side of the sliding block I101. A rack base is installed on the top of the ball nut I102. A rack base groove 109 is opened on the rack base and is perpendicular to the linear moving base I100. The rack base groove 109 is open at both ends and slidably connected to the rack base 110. A rack 108 is installed on the upper side of the rack base 110. At the same time, two positioning collars 104 are symmetrically installed on both sides of the top of the rack base. A slide rod I105 is rotatably disposed between the positioning collars 104. A spur gear 107 is fitted on the slide rod I105 corresponding to the position of the rack 108. The bottom of the slide rod 105 is engaged with the rack 108. A positioning key 106 parallel to the axis of the slide rod 105 is installed on the outer circumferential wall of the slide rod 105. A positioning slide rail is provided on the inner side of the spur gear 107 corresponding to the inner wall of the positioning key 106. The positioning key 106 moves axially along the positioning slide rail. At the same time, guide rods are symmetrically installed at both ends of the slide rod 105. The guide rods at both ends are positioned on the linear motion base 1100 by the support rods. The end of the guide rod facing the multi-stage transmission component is connected to the transmission shaft 7. The transmission shaft 7 is rotated downward through the transmission belt 26 and the pulley to the gear shaft on one side of the bevel gear 24. That is, under the transmission of the transmission belt 26 and the pulley, the transmission shaft 7 is driven to rotate, thereby controlling the slide rod 105 to rotate, which in turn drives the spur gear 107 to engage with the rack 108, and drives the rack base 110 to slide in the rack base groove 109. Meanwhile, a ball screw I103 is threadedly connected to the middle of the ball nut I102. Screw shafts are installed at both ends of the ball screw I103. Both screw shafts are supported and positioned on the linear motion base I100 by support rods. The end of the screw shaft facing the multi-stage transmission component is connected to the gear shaft on the side of the bevel gear II4, thereby transmitting the rotational kinetic energy of the main control motor 2 to the ball screw I103. At the same time, a guide device is provided on the ball nut I102 to keep the ball nut I102 moving only along the ball screw I103 in a straight line, thereby driving the rack 108 on the upper side of the ball nut I102 to move synchronously. Since the rack 108 is also moving under the rotation of the spur gear 107, the rack 108 has two directions of movement trajectory at this time. Based on this, a tear detection component is provided at the bottom end of the rack 108 via a limiting rotation connector 18. The tear detection component moves horizontally and obliquely to gradually apply tearing pressure to the artificial leather fabric of the new energy vehicle roof placed at its end (fixed on the integrated testing platform 1) and then conducts tear toughness testing. Specifically, the tear detection assembly includes a slide block I 112 connected to the bottom of the limiting rotary connector 18. A swing slide rod 113 is slidably connected to the center of the slide block I 112. A cylinder 114 is mounted on the side wall of the slide block I 112 via a connecting plate. A piston rod 115 is provided at the telescopic end of the cylinder 114. A mounting base 116 is mounted at the end of the piston rod 115. A tear cutter 117 is detachably mounted on one side of the mounting base 116. Tear detection is performed on artificial leather fabrics of different sizes and types for new energy vehicle headliners by using different types of tear cutters 117. The cylinder 114 and piston rod 115 are used to adjust the initial position of the tear cutter 117. One end of the swing slide rod 113 is equipped with a connecting plate 126. The bottom of the connecting plate 126 is rotatably connected to a support column via a limiting rotary connector 18. The bottom of the support column is fixed on the integrated testing table 1. The other end is equipped with an L-shaped connecting rod 118. The end of the L-shaped connecting rod 118 extends and retracts through a sleeve 119. The bottom of the sleeve 119 is rotatably connected to a slide block II 122 via a limiting rotary connector 18. The sliding slide rod II 120 slides at the center of the slide block II 122. Guide rods are installed at both ends of the slide rod II 120. The guide rods are all supported and positioned by positioning sleeves 123. The bottom of the positioning sleeves 123 is common. Installed on the linear moving base II121, the bottom of the slide block II122 is equipped with a sliding base II124, which is slidably connected inside the linear moving base II121. The L-shaped connecting rod 118 and the swing slide rod 113 are set by the rotation of 18 and the sliding of slide block I112 on the swing slide rod 113. When the rack 108 moves, it drives slide block II122 to slide on slide rod II120, thereby controlling the tearing cutter 117 to gradually apply pressure to tear the artificial leather fabric of the new energy vehicle roof at its end, and then conducts a tear toughness test on it. It should be noted that the principle of tear toughness testing is as follows: the two ends of the artificial leather fabric of the new energy vehicle roof to be tested are clamped in two sets of fabric clamping components I125 respectively, so that the fabric is in a taut state; after the main control motor 2 is started, through the composite transmission of bevel gear I3, bevel gear II4, transmission belt I5, transmission belt II6, etc., the tearing cutter 117 gradually approaches and acts on the edge or pre-cut of the fabric along a predetermined trajectory; the cylinder 114 drives the piston rod 115 to adjust the initial position of the tearing cutter 117, and the tearing cutter 117 generates a continuous tearing effect on the fabric; by recording the maximum force value, average force value, tearing displacement, tearing length and tearing time required during the tearing process, the tear toughness of the fabric is evaluated.

[0037] To ensure that tear detection results are quantifiable, the device can be configured with the following conventional tools or detection elements: A force sensor, preferably installed between the mounting base 116 and the piston rod 115, or installed at the bottom of the fabric clamping assembly I 125, is used to collect tear force. A displacement sensor, preferably a draw rope displacement sensor, a magnetic scale, an optical scale, or an encoder, is used to collect the displacement of the tearing cutter. Pressure regulating valves and air pressure gauges are used to control the output pressure of the cylinder; PLC controller, touch screen and data acquisition card are used to control the detection action and record the detection data; Pre-cut template or scribing template is used to form an initial cut of uniform length on a fabric sample; Vernier calipers, steel rulers, or thickness gauges are used to measure the size and thickness of samples.

[0038] Specifically, such as Figure 4 As shown, the limiting rotation connector 18 includes a limiting rotation column 17. The top of the limiting rotation column 17 is internally connected to a limiting rotation hole column 11. By rotating the limiting rotation column 17 inside the limiting rotation hole column 11, the two can be prevented from separating. The limiting rotation column 17 and the limiting rotation hole column 11 located at the bottom of the connecting plate 126, the rack 108, and the bottom of the sleeve column 119 are respectively connected to the corresponding structures. Details are not described here, but can be understood by referring to the schematic diagrams at the corresponding positions.

[0039] The mounting base 116 and the tearing cutter 117 are preferably connected by a bolt pressure plate, dovetail groove plug, T-slot locking, or positioning pin plus bolt detachable connection.

[0040] A preferred structure is as follows: a tool mounting groove is provided at the front end of the mounting base 116, the width of which is adapted to the width of the handle of the tearing cutter 117; after the handle of the tearing cutter 117 is inserted into the tool mounting groove, it is pressed and fixed from the side wall of the mounting base by two or more fastening bolts.

[0041] The mounting base 116 can also be provided with a positioning pin hole, and the tearing cutter 117 is provided with a corresponding positioning hole. After the positioning pin passes through the positioning pin hole, it positions the tearing cutter. The fastening bolt is used to lock it, thereby preventing the tearing cutter from shifting or loosening during the tearing process.

[0042] Another preferred structure is as follows: a dovetail groove is provided on the mounting base 116, and a dovetail slider is provided on the handle of the tearing cutter 117. After the tearing cutter 117 is inserted from the side of the mounting base, it is fixed by the end pressure plate and locking bolt. This structure facilitates quick replacement of different types of cutters.

[0043] The mounting base 116 is preferably made of 45 steel, 40Cr steel or 7075 aluminum alloy; when aluminum alloy is used, a steel bushing or steel pressure plate can be embedded in the tool mounting groove to improve wear resistance.

[0044] The tear cutter 117 can be equipped with different blade types depending on the testing requirements, including straight blade cutter, pointed blade cutter, rounded blade cutter, V-shaped blade cutter and hook-shaped tear cutter.

[0045] Preferably, a straight-blade cutter is used to simulate tearing of fabric along a straight cut; a pointed-blade cutter is used to form an initial puncture and test the puncture resistance to tearing; a V-shaped cutter is used to simulate tearing under concentrated stress conditions; a rounded-blade cutter is used to reduce the instantaneous cutting impact and make the tearing process smoother; and a hook-shaped tearing cutter is used for hook-type tear detection.

[0046] Furthermore, the artificial leather fabric for the new energy vehicle roof, which is to be tested for tearing, is positioned by two sets of symmetrically distributed fabric clamping components I125 located on one side of the tear cutter 117. The fabric clamping components I125 are symmetrically distributed on both sides and fixed at the bottom on the integrated testing platform 1. The integrated testing platform 1 between the two has through holes running vertically to provide vertical placement space for the fabric. Before testing, the fabric clamping components I125 clamp the two ends of the fabric respectively, straighten it and fix it. Then the tear cutter 117 gradually applies tearing pressure along one end of the fabric.

[0047] In this embodiment of the invention, the tensile testing unit 20 includes a fabric moving clamping assembly 201 fixed to one side of the ball nut I102 via a connecting plate 202. The fabric moving clamping assembly 201 is suspended in the air, and a set of fabric fixing clamping assemblies 200 are arranged opposite to the side of the fabric moving clamping assembly 201 facing the connecting plate 126. The bottom of the fabric fixing clamping assembly 200 is fixed to the integrated testing table 1 via a support plate. When the ball nut I102 moves, it synchronously drives the fabric moving clamping assembly 201 to move, thereby adjusting the distance between it and the fabric fixing clamping assembly 200. Then, the fabric to be tested for tensile strength is placed between the fabric fixing clamping assembly 200 and the fabric moving clamping assembly 201. In this way, the fabric is tested for tensile strength by means of the movement of the fabric moving clamping assembly 201. By directly setting the fabric moving clamping assembly 201 on the ball nut I102, the rotational kinetic energy of the main control motor 2 can be indirectly utilized, thereby improving the conversion and utilization rate of kinetic energy. Among them, the fabric fixing clamping component 200 and the fabric moving clamping component 201 fix and clamp the fabric in a way that is consistent with the fabric clamping component I125. It should be noted that the principle of tensile toughness testing is as follows: One end of the artificial leather fabric for the new energy vehicle roof is fixed to the fabric fixing clamping assembly 200, and the other end is fixed to the fabric moving clamping assembly 201; the main control motor 2 drives the ball screw I103 to rotate, causing the ball nut I102 to move in a straight line, and through the connecting plate 202, it moves the fabric moving clamping assembly 201 away from the fabric fixing clamping assembly 200; as the distance between the two clamping assemblies increases, the fabric is subjected to axial tension. By collecting the tensile force, tensile displacement, elongation, breaking force or maximum tensile force of the fabric during the stretching process, the tensile toughness of the fabric can be evaluated.

[0048] To improve detection accuracy, tension and compression sensors can be installed on the fabric fixing clamping assembly 200 or the fabric moving clamping assembly 201, and displacement sensors can be installed at the end of the ball screw I103 or at the moving clamping assembly.

[0049] Standard configurations may also include a PLC controller, servo driver, data acquisition module, touch screen, thickness gauge, cutting knife, gauge ruler, and clamping anti-slip pad; details will not be elaborated here.

[0050] In a preferred embodiment of the present invention, the bending resistance testing unit 30 includes a linear moving base 300 fixed to one side of the linear moving base 1100 and parallel to the linear moving base 1100 by a support plate. Two sets of ball screws 2301 are symmetrically arranged on both sides of the upper part of the linear moving base 300. The opposite ends of the ball screws 2301 are fixedly connected by a connecting shaft 302. The tooth grooves of the two sets of ball screws 2301 are opposite, and each set is threaded with a ball nut 2303. The ball nut 2303 is also provided with a guide device for limiting its rotation. Screw shafts are installed at the ends of the ball screws 2301 that are far apart from each other. The screw shafts are positioned on the linear moving base 300 by a support rod and are located at the main control motor. The end of the lead screw shaft on one side is connected to the transmission belt I5 via a pulley, thereby transferring the kinetic energy of the main control motor 2 to the ball screw II 301. Then, by means of the reverse setting of the tooth grooves of the ball screw II 301 on both sides, the relative movement of the ball nuts II 303 on both sides is controlled simultaneously. On the same side of the ball nuts II 303 on both sides, a set of multi-level folding components 305 is installed through the fixing rod 304. The artificial leather fabric of the new energy vehicle roof is clamped between the multi-level folding components 305 on both sides by the fabric clamping component 308. Then, by means of the multi-level folding function of the multi-level folding components 305, the artificial leather fabric of the new energy vehicle roof between the two sides is continuously folded when the multi-level folding components 305 on both sides approach each other, thereby testing its folding toughness. Among them, such as Figure 9As shown, the multi-stage folding assembly 305 includes a side-mounted right-angled trapezoidal folding plate 306. The sidewall of the folding plate 306 is fixedly connected to the fixing rod 304. A fabric clamping assembly 308 is provided on the vertical sidewalls of the two folding plates 306 that are close to each other. The fabric clamping assembly 308 has the same structure as the fabric clamping assembly I125 and is used to clamp and fix the artificial leather fabric of the new energy vehicle roof. At the same time, multiple triangular strips 307 are evenly arranged on the inclined surface of the folding plate 306. By fixing the two ends of the artificial leather fabric of the new energy vehicle roof through the fabric clamping assembly 308, and then by the continuous approach of the two folding plates 306 and the shape of the folding plate 306, the artificial leather fabric of the new energy vehicle roof between the two is gradually squeezed and folded by the triangular strips 307. This process is repeated to perform multi-stage folding of the artificial leather fabric of the new energy vehicle roof, thereby conducting a folding toughness test. It should be noted that the principle of the folding toughness test is as follows: The artificial leather fabric of the new energy vehicle roof is clamped at both ends in two sets of fabric clamping components II 308; the main control motor 2 drives the two sets of ball screws II 301 to rotate synchronously through the transmission belt I 5. Since the spiral directions of the two sets of ball screws II are opposite, the ball nuts II 303 on both sides can move synchronously towards each other or away from each other; when the ball nuts II 303 on both sides move towards each other, the fixing rod 304 drives the multi-stage folding components 305 on both sides to gradually approach each other, and the inclined surface of the folding plate 306 and the triangular strips 307 on it apply continuous compression to the fabric, causing the fabric to bend in multiple stages; by controlling the multi-stage folding components 306 on both sides to repeatedly approach and move away from each other, the fabric can be repeatedly folded, and the number of folds, folding angle, crack occurrence, coating peeling, and crease recovery can be recorded to evaluate the folding toughness of the fabric.

[0051] The flexural strength tester can be configured with a counter, proximity switch, encoder, displacement sensor, image acquisition camera, light source, crack observation magnifying glass or microscopic observation device.

[0052] A counter is used to record the number of folding cycles; an image acquisition camera is used to observe cracks, whitening, wrinkling, or coating peeling on the fabric surface; a displacement sensor is used to detect the proximity of the two folding plates; and a PLC controller is used to set the folding frequency and number of cycles.

[0053] As a preferred embodiment of the present invention, the fabric clamping assembly I125, the fabric fixing clamping assembly 200, the fabric moving clamping assembly 201, and the fabric clamping assembly 308 have the same structural principle. Here, the fabric clamping assembly 308 is used as an example for description. The fabric clamping assembly 308 includes a fixed clamping plate 12 fixed on the vertical side wall of the folding plate 306. A movable clamping plate 13 is movably arranged on the upper side of the fixed clamping plate 12. Slider blocks 15 are installed at both ends of the movable clamping plate 13 facing the side wall of the folding plate 306. A slide rail 14 is opened on the side wall of the folding plate 306 corresponding to the slider 15. The slider 15 slides along the inner limit of the slide rail 14. At the same time, bolt holes 16 are provided at corresponding positions on the fixed clamping plate 12 and the movable clamping plate 13. The bolt holes 16 are used to fasten the bolts to fix and clamp the fabric placed between the fixed clamping plate 12 and the movable clamping plate 13. It should be noted that the distribution angles of the fixing plates 12 and 13 at the fabric fixing clamping assembly 200, the fabric moving clamping assembly 201, and the fabric clamping assembly I 125 are different from those at the fabric clamping assembly 308. The specific angles depend on the distribution of the fabric to be tested, and will not be elaborated here. Please refer to the corresponding schematic diagram or actual situation for specific settings.

[0054] In a preferred embodiment of the present invention, triangular strips 307 are spaced apart along the inclined surface of the folding plate 306, and multiple triangular strips 307 are arranged parallel to each other, with their length direction preferably consistent with the width direction of the fabric. The number of triangular strips 307 is preferably 3 to 15, and the cross-section of the triangular strips 307 can be an isosceles triangle, a rounded triangle, or a trapezoidal protrusion structure; a rounded triangle cross-section is preferred to avoid sharp edges scratching the surface of the artificial leather fabric.

[0055] The triangular strip 307 is preferably made of nylon, polyoxymethylene (POM), polyurethane, rubber, aluminum alloy, stainless steel, or a metal material with an elastic coating. For artificial leather fabrics that are prone to indentation, POM, nylon, or rubber-coated triangular strips are preferred; for equipment requiring high lifespan and high rigidity, aluminum alloy or stainless steel triangular strips are preferred, with a polyurethane cushioning layer covering their surface.

[0056] Its folding principle is as follows: when the two folding plates 306 approach each other, the inclined surface of the folding plate 306 first forms a guiding pressure on the fabric, and then multiple triangular strips 307 contact the fabric in turn, causing the fabric to generate continuous bending points at different positions; the multiple bending points work together to transform the fabric from a single fold line bend to a multi-level fold bend, thus more closely resembling the complex stress state of the artificial leather on the vehicle roof during installation, pressing, thermal expansion and contraction and long-term use.

[0057] In one embodiment of the present invention, the ball screw I103 and the ball nut I102 form a linear drive pair. When the ball screw I103 rotates, the balls circulate between the ball nut I102 and the screw's helical groove, converting rotational motion into linear movement of the ball nut I102. Since rolling friction is less than sliding friction, this structure can improve transmission efficiency and movement accuracy.

[0058] The ball screw I103 is preferably supported at both ends by bearing housings, which are equipped with deep groove ball bearings, angular contact ball bearings or thrust bearings.

[0059] A fixed-end bearing housing is preferred near the power input end, while a support-end bearing housing is preferred away from the power input end, in order to limit the axial movement of the lead screw and ensure rotational stability.

[0060] Two sets of ball screws II301 are configured, with opposite helical directions. The two sets of ball screws II301 are coaxially fixedly connected via connecting shaft 302. When the transmission belt I5 drives one set of ball screws II304 to rotate, the other set of ball screws II301 rotates synchronously. Because the helical directions of the two sets of ball screws II301 are opposite, the ball nuts II303 on both sides can move synchronously towards each other or away from each other.

[0061] The function of this structure is twofold: firstly, it ensures the synchronous movement of the multi-level folding components 305 on both sides, making the fabric more evenly stressed; secondly, it enables the clamping structures on both sides to move closer or further apart at equal distances through a single power input, improving the stability and repeatability of folding resistance testing. The ball nut II 303 can be connected to the fixed rod 304 via a fixed seat. The fixed seat is preferably installed by bolt fixing and positioning pin positioning to facilitate maintenance and replacement. The ball nut II 303 is also equipped with an anti-rotation guide device, preferably a linear guide pair or a double guide rod structure, to ensure that the ball nut II 303 moves only along the lead screw axis and does not rotate with the lead screw.

[0062] In a preferred embodiment of the present invention, the fixed clamping plate 12 is preferably made of steel plate, aluminum alloy plate or stainless steel plate, and the thickness is preferably 5mm-20mm; the movable clamping plate 13 is preferably 5mm-15mm thick.

[0063] The clamping surface can be equipped with anti-slip texture, rubber pad, silicone pad, sanding pad or micro-tooth structure.

[0064] The fastening bolts are preferably M4-M12 bolts, and the number is preferably 2-6. To ensure uniform clamping force, the multiple bolt holes 16 are preferably evenly spaced along the length of the fixing plate.

[0065] The working principle of the present invention is as follows: (1) According to the test items, the artificial leather fabric of the new energy vehicle roof is clamped in the corresponding position; when the tear test is performed, the two ends of the artificial leather fabric of the new energy vehicle roof are clamped in two sets of fabric clamping components I125 respectively, and the artificial leather fabric of the new energy vehicle roof is in a tensile state; when the tensile test is performed, one end of the artificial leather fabric of the new energy vehicle roof is fixed to the fabric fixing clamping component 200, and the other end is fixed to the fabric moving clamping component 201; when the folding resistance test is performed, the two ends of the artificial leather fabric of the new energy vehicle roof are clamped in two sets of fabric clamping components II308 respectively.

[0066] (2) Start the main control motor 2. The main control motor 2 drives the bevel gear I3 to rotate. The bevel gear I3 drives the bevel gear II4 that meshes with it perpendicularly to rotate. The bevel gear II4 transmits the rotational kinetic energy to the tear detection unit 10 and the folding resistance detection unit 30 through the gear shaft.

[0067] (3) The gear shaft on one side of the bevel gear II4 drives the ball screw I103 to rotate. The ball nut I102 moves linearly along the ball screw I103 under the restriction of the guide device, and drives the rack 108 to move synchronously. At the same time, the transmission shaft 7 drives the slide rod I105 to rotate through the transmission belt II6 and the pulley. The slide rod I105 drives the spur gear 107 to rotate through the positioning key 106. The spur gear 107 meshes with the rack 108, so that the rack base 110 slides in the rack base groove 109. The bottom of the rack 108 is limited by the rotating... The connecting component 18 drives the slide block I 112 and the swing slide rod 113 to move. The swing slide rod 113 drives the L-shaped connecting rod 118, the sleeve column 119 and the slide block II 122 to move in coordination, thereby controlling the tearing cutter 117 on the mounting base 116 to gradually approach the artificial leather fabric of the new energy vehicle roof. The cylinder 114 adjusts the initial position of the tearing cutter 117 through the piston rod 115, so that the tearing cutter 117 produces a continuous tearing effect on the edge or pre-cut of the artificial leather fabric of the new energy vehicle roof, thereby completing the tear toughness test.

[0068] (4) When the ball nut I102 moves linearly along the ball screw I103, it drives the fabric moving clamping assembly 201 to move synchronously through the connecting plate 202, so that the fabric moving clamping assembly 201 gradually moves away from the fabric fixing clamping assembly 200; as the distance between the fabric moving clamping assembly 201 and the fabric fixing clamping assembly 200 increases, the new energy vehicle roof artificial leather fabric fixed between the two is subjected to axial tension, thereby completing the tensile toughness test.

[0069] (5) The gear shaft on the other side of the bevel gear II4 drives the ball screw II301 to rotate through the transmission belt I5 and the pulley. The two sets of ball screws II301 rotate synchronously through the connecting shaft 302. Since the tooth grooves of the two sets of ball screws II301 are opposite, the ball nuts II303 on both sides move synchronously towards each other under the restriction of the guide device. The ball nuts II303 on both sides drive the multi-stage folding components 305 on both sides to gradually approach each other through the fixing rod 304. The inclined surface of the folding plate 306 on both sides and the triangular strip 307 apply continuous compression to the artificial leather fabric of the new energy vehicle roof, causing the artificial leather fabric of the new energy vehicle roof to bend in multiple stages, thereby completing the test of folding strength performance.

[0070] (6) During the tear test, record the maximum force, average force, tear displacement, tear length and tear time required during the tearing process; during the tensile test, record the tensile force, tensile displacement, elongation, breaking force or maximum tensile force; during the folding test, record the number of folds, folding angle, crack occurrence, coating peeling and crease recovery, thereby evaluating the comprehensive toughness of the artificial leather fabric for the roof of new energy vehicles.

[0071] It should be understood that in this application, all rotating, sliding, meshing, belt-driven and other moving parts are well lubricated and not prone to slippage or wear, and each part is provided with a corresponding protective shell. However, in the accompanying drawings of this application, the connection state of each moving part is not shown. It should also be understood that all parts in this application are made of metal or plastic materials with suitable strength in the relevant field to ensure that their structural rigidity meets the actual requirements.

[0072] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A device for testing the toughness of artificial leather fabric for the headliner of new energy vehicles, characterized in that: It includes an integrated testing station (1), which is equipped with a tear testing unit (10), a tensile testing unit (20) and a flexural strength testing unit (30) controlled and driven by a single main control motor (2). The tear testing unit (10), the tensile testing unit (20), and the folding resistance testing unit (30) are respectively used to test the tear toughness, tensile toughness, and folding resistance of the artificial leather fabric for the roof of new energy vehicles. The main control motor (2) is connected to the power end of the tear detection unit (10) and the folding resistance detection unit (30) respectively through a multi-stage transmission assembly, and is used to synchronously control the operation of the tear detection unit (10) and the folding resistance detection unit (30); The tensile testing unit (20) is connected to the tear testing unit (10), and the tensile testing unit (20) operates synchronously with the tear testing unit (10).

2. The device for testing the toughness of artificial leather fabric for the headliner of a new energy vehicle according to claim 1, characterized in that: The multi-stage transmission assembly includes a bevel gear I (3) connected to the output end of the main control motor (2), and a bevel gear II (4) is vertically meshed on one side of the bevel gear I (3). The bevel gear II (4) has a toothed shaft installed on both sides at the center. One side of the toothed shaft is connected to the power end of the tear detection unit (10), and the other side of the toothed shaft is rotatably connected to the power end of the bending resistance detection unit (30) through the transmission belt I (5) and pulley. The tear detection unit (10) is also rotatably connected to the gear shaft on one side of the bevel gear II (4) via the transmission shaft (7), the transmission belt II (6) and the pulley.

3. The device for testing the toughness of artificial leather fabric for the headliner of a new energy vehicle according to claim 2, characterized in that: The tear detection unit (10) includes a linear moving base I (100) fixed on the integrated detection table (1) by a support plate. A sliding base I (101) is slidably disposed in the linear moving base I (100), and a ball nut I (102) is installed on the upper side of the sliding base I (101). The ball nut I (102) is threadedly connected to a ball screw I (103) in the middle. The ball screw I (103) has screw shafts installed at both ends. The screw shafts are supported and positioned on the linear moving base I (100) by a support rod. The end of the screw shaft facing the multi-stage transmission assembly is connected to the gear shaft on the side of the bevel gear II (4). The ball nut I (102) is mounted on a rack base. The rack base has a rack base groove (109) that is perpendicular to the linear moving base I (100). The rack base groove (109) is open at both ends and is slidably connected to the rack base (110). A rack (108) is mounted on the upper side of the rack base (110). Two positioning collars (104) are symmetrically installed on both sides of the top of the rack base. A slide rod I (105) is rotatably arranged between the two positioning collars (104). A spur gear (107) is fitted on the slide rod I (105) corresponding to the position of the rack (108). The bottom of the spur gear (107) meshes with the rack (108). A positioning key (106) parallel to the axis of the slide rod I (105) is installed on the outer circumferential wall of the slide rod I (105). A positioning slide rail is provided on the inner side of the spur gear (107) corresponding to the inner wall of the positioning key (106). The positioning key (106) moves axially along the positioning slide rail. Guide rods are symmetrically installed at both ends of the slide rod I (105). The guide rods at both ends are positioned on the linear moving base I (100) by support rods. The end of the guide rod facing the multi-stage transmission assembly is connected to the transmission shaft (7).

4. The device for testing the toughness of artificial leather fabric for new energy vehicle headliners according to claim 3, characterized in that: The bottom end of the rack (108) is provided with a tear detection component via a limiting rotation connector (18); The tear detection assembly includes a slide block I (112) connected to the bottom of the limiting rotary connector (18), a swing slide rod (113) slidably connected at the center of the slide block I (112), a cylinder (114) mounted on the side wall of the slide block I (112) via a connecting plate, a piston rod (115) provided at the telescopic end of the cylinder (114), a mounting base (116) mounted at the end of the piston rod (115), and a tear cutter (117) detachably mounted on one side of the mounting base (116). A connecting plate (126) is installed at one end of the swing slide bar (113). A support column is rotatably connected to the bottom of the connecting plate (126) through the limiting rotating connector (18). The bottom of the support column is fixed on the integrated testing table (1). The other end of the swing slide rod (113) is equipped with an L-shaped connecting rod (118), the end of the L-shaped connecting rod (118) extends through a sleeve post (119), and the bottom of the sleeve post (119) is rotatably connected to the slide block II (122) through the limiting rotating connector (18). The sliding block II (122) is slidably connected to the center of the sliding block II (122). Guide rods are installed at both ends of the sliding block II (120). The guide rods are all supported and positioned by the positioning sleeve (123). The bottom of the positioning sleeve (123) is installed on the linear moving base II (121). A sliding base block II (124) is installed at the bottom of the sliding block II (122). The sliding base block II (124) is slidably connected inside the linear moving base II (121).

5. The device for testing the toughness of artificial leather fabric for the headliner of a new energy vehicle according to claim 4, characterized in that: The limiting rotation connector (18) includes a limiting rotation column (17) and a limiting rotation hole column (11). The limiting rotation column (17) is rotatably connected to the limiting rotation hole column (11) inside the top. The limiting rotation column (17) rotates inside the limiting rotation hole column (11), and the limiting rotation column (17) and the limiting rotation hole column (11) are restricted from disengaging.

6. The device for testing the toughness of artificial leather fabric for the headliner of a new energy vehicle according to claim 4, characterized in that: The mounting base (116) and the tearing cutter (117) are detachably connected by bolt pressure plate, dovetail groove plug, T-slot locking or positioning pin plus bolt.

7. The device for testing the toughness of artificial leather fabric for the headliner of a new energy vehicle according to claim 3, characterized in that: The tensile testing unit (20) includes a fabric moving clamping assembly (201) fixed to one side of the ball nut I (102) by a connecting plate (202), and the fabric moving clamping assembly (201) is suspended in the air; The fabric moving clamping assembly (201) is provided with a fabric fixing clamping assembly (200) facing the side of the connecting plate (126). The bottom of the fabric fixing clamping assembly (200) is fixed on the integrated testing table (1) by a support plate. When the ball nut I (102) moves, it synchronously drives the fabric moving clamping assembly (201) to move, which is used to adjust the distance between the fabric moving clamping assembly (201) and the fabric fixing clamping assembly (200).

8. The device for testing the toughness of artificial leather fabric for the roof of a new energy vehicle according to claim 2, characterized in that: The bending resistance testing unit (30) includes a linear moving base III (300) which is fixed to one side of the linear moving base I (100) by a support plate and is parallel to the linear moving base I (100). Two sets of ball screws II (301) are symmetrically arranged on both sides of the upper part of the linear moving base III (300). The opposite ends of the two sets of ball screws II (301) are fixedly connected by a connecting shaft (302). The tooth grooves of the two sets of ball screws II (301) are opposite, and a ball nut II (303) is threaded on each of the two sets of ball screws II (301). The ball screws II (301) on both sides are equipped with screw shafts at their far ends. The screw shafts are positioned on the linear motion base III (300) by a support rod, and the end of the screw shaft located on the side of the main control motor (2) is connected to the transmission belt I (5) by a pulley. Both sides of the ball nut II (303) are equipped with a set of multi-stage folding components (305) on the same side via a fixing rod (304).

9. The device for testing the toughness of artificial leather fabric for the headliner of a new energy vehicle according to claim 8, characterized in that: The multi-level folding assembly (305) includes a folding plate (306) with a right-angled trapezoidal structure placed on the side, and the side wall of the folding plate (306) is fixedly connected to the fixing rod (304); Fabric clamping assembly II (308) is provided on the vertical sidewalls of the two folding plates (306) that are close to each other. The fabric clamping assembly II (308) is used to clamp and fix the artificial leather fabric of the roof of the new energy vehicle. The folding plate (306) has a plurality of triangular strips (307) evenly arranged on its inclined surface. The triangular strips (307) are spaced apart along the inclined surface of the folding plate (306), and the plurality of triangular strips (307) are arranged parallel to each other.

10. The device for testing the toughness of artificial leather fabric for the headliner of a new energy vehicle according to claim 9, characterized in that: The fabric clamping assembly I (125), the fabric fixing clamping assembly (200), the fabric moving clamping assembly (201), and the fabric clamping assembly II (308) have the same structural principle; The fabric clamping assembly II (308) includes a fixed clamping plate (12) fixed on the vertical side wall of the folding plate (306), a movable clamping plate (13) is movably arranged on the upper side of the fixed clamping plate (12), and sliders (15) are installed at both ends of the movable clamping plate (13) facing the side wall of the folding plate (306). A slide rail (14) is provided on the side wall of the folding plate (306) corresponding to the slider (15), and the slider (15) slides along the inside of the slide rail (14) for a limited position. Bolt holes (16) are provided at corresponding positions on the fixed clamping plate (12) and the movable clamping plate (13). The bolt holes (16) are used in conjunction with fastening bolts to fix and clamp the artificial leather fabric of the new energy vehicle roof placed between the fixed clamping plate (12) and the movable clamping plate (13).

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