A tensile strength testing device for automotive interior nonwoven fabrics

Abstract

The present invention relates to the technical field of non-woven fabric tensile strength testing, and specifically to a tensile strength testing device for automotive interior non-woven fabrics, comprising a test area plate, a vertical plate symmetrically fixed to the top of the test area plate, a central track fixed to the top of the two vertical plates, a positioning portion symmetrically arranged at the middle of the central track through a limit slider, a power portion arranged on the two vertical plates, a soaking portion arranged on the rear side of the central track, and an auxiliary component for cooperating with the power portion fixed to the top of the test area plate and located on the front side of the central track. The present invention uses a soaking portion to soak automotive interior non-woven fabrics to simulate the condition where the non-woven fabrics are damp, so that the test results are more diverse and closer to reality. At the same time, by sampling the same automotive interior non-woven fabric multiple times and conducting comparative tests, the tensile strength of the automotive interior non-woven fabrics to be tested can be comprehensively evaluated by the change in the tensile strength of the automotive interior non-woven fabrics to be tested under different environments.

Description

Technical Field

[0001] The invention relates to the technical field of non-woven fabric tensile strength testing, in particular to a tensile strength testing device for automobile interior non-woven fabrics. Background Art

[0002] Automotive interior nonwoven fabrics are mainly used for decoration and padding of automotive seats, door panels, ceilings, carpets and other parts. Nonwoven fabrics are very suitable for the production of automotive interior materials due to their unique performance characteristics, such as good air permeability, moisture absorption, softness and wear resistance. In order to ensure the durability, stability and product quality of automotive interior nonwoven fabrics, it is usually necessary to test their tensile strength through tensile strength testing. The actual method of tensile strength testing of automotive interior nonwoven fabrics is usually to use a universal testing machine for testing, but this type of test is costly and the equipment is complex.

[0003] In order to address the above problems, the utility model patent with publication number CN215296946U discloses a non-woven fabric tensile strength testing device. This technical solution uses a pair of winding rollers to put the non-woven fabric in a horizontal tensioned state. The first cylinder is actuated to increase the distance between the two sliders, so that the non-woven fabric is in a stretched state. A sensor is provided on the first cylinder, which can record the output power of the first cylinder in real time, thereby reliably testing the tensile strength of the non-woven fabric. The structure is compact and the test results are reliable. The non-woven fabric is fixed on the winding roller by an electric motor. The operation is convenient and the use cost is low.

[0004] Although the above technical scheme can easily test the tensile strength of the automotive interior non-woven fabric through sliders and winding rollers, when the automotive interior non-woven fabric is twisted on the winding roller, only manual position adjustment will cause the stretched part of the automotive interior non-woven fabric to be skewed or overlapped, thereby causing the tensile strength test result of the automotive interior non-woven fabric to deviate; in addition, since the automotive interior non-woven fabric is often soaked during use, the above technical scheme is used to test the automotive interior non-woven fabric for soaking. It is necessary to first remove the non-woven fabric that has completed the normal test and then twist the soaked non-woven fabric on the winding roller for testing. This test procedure is cumbersome and inefficient. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a tensile strength testing device for automotive interior non-woven fabrics, comprising a test area plate, a vertical plate is fixed symmetrically on the top of the test area plate, a central track is fixed on the top of the two vertical plates, a positioning part is symmetrically arranged on the middle part of the central track through a limiting slider, a power part is arranged on the two vertical plates, a wetting part is arranged on the rear side of the central track, and an auxiliary component for cooperating with the power part is fixed on the top of the test area plate and located on the front side of the central track; the positioning part comprises a lower clamping block hinged on the top of the limiting slider, a square positioning column is fixed on the top of the lower clamping block, an upper clamping block is slidably connected to the square positioning column, a positioning stud is connected to the middle part of the upper clamping block, and the bottom of the positioning stud is rotatably installed on the top of the lower clamping block, and a stretching component and a limiting component are arranged in sequence from front to back between the upper clamping block and the lower clamping block, and the limiting component locks the end of the non-woven fabric by extrusion, and when the limiting component is The ends of the non-woven fabric are locked and the non-woven fabric is stretched flat by a stretching component; the power unit includes an L-shaped mounting plate fixed on the opposite sides of the two vertical plates, and the vertical section of the L-shaped mounting plate and the side close to the positioning part are connected by an electric push rod to provide a data collection component, and the left end of the data collection component is rotatably mounted on the corresponding lower clamping block; compression springs are fixed on the opposite sides of the two limit sliders, and compression plates are fixed on the opposite ends of the two compression springs; the power unit also includes a pushing component arranged on the top of the test area plate, and the pushing component is used to stretch the non-woven fabric; the wetting part includes a U-shaped fixing plate fixed on the rear side of the central through track, and the front end of the longitudinal section of the U-shaped fixing plate located on the upper side is provided with a watering component that moves back and forth left and right and soaks the non-woven fabric, and a track component for turning the non-woven fabric is connected between the left and right ends of the watering component and the upper clamping block, and the track component changes the watering track of the watering component so that the non-woven fabric is fully soaked.

[0006] Preferably, the limiting component includes a longitudinal through groove arranged at the bottom of the upper clamping block, a positioning round rod is vertically arranged in the middle of the upper clamping block and corresponds to the position of the longitudinal through groove, an extrusion plate is fixed to the bottom of the positioning round rod, a spring plate is fixed to the top of the positioning round rod, and a tension spring is connected between the spring plate and the upper clamping block; a positioning square plate cooperating with the extrusion plate is fixed to the top of the lower clamping block, and an avoidance groove for avoiding the positioning square plate and the extrusion plate is arranged at the bottom of the upper clamping block.

[0007] Preferably, the stretching component includes a mounting groove arranged on the top of the lower clamping block and located on the front side of the positioning square plate, the mounting groove and the longitudinal through groove are hinged with connecting rods at the vertical relative positions, an oblique spring is connected between each connecting rod and the corresponding upper clamping block or lower clamping block, and a stretching plate is hinged at the position of each connecting rod away from the hinge point, and the two stretching plates are pressed against each other.

[0008] Preferably, the pushing component includes a median column fixed on the top of the test area plate, a horizontal bidirectional threaded rod is rotatably installed in the middle of the median column, the right end of the bidirectional threaded rod passes through the vertical plate on the right, a motor is installed on the right side of the vertical plate on the right through a motor box, the output end of the motor is connected to the bidirectional threaded rod, and the bidirectional threaded rod is symmetrically connected to a bent push plate for pushing the pressure plate.

[0009] Preferably, the auxiliary component includes a limit plate fixed on the top of the test area plate, a longitudinal column is slidably connected to the middle of the limit plate, a vertical baffle is fixed to the front end of the longitudinal column, a position locking structure is jointly arranged on the limit plate and the longitudinal column, a vertical mounting plate is fixed to the rear end of the longitudinal column, and two groups of step baffles for blocking the bending push plates are symmetrically fixed on the left and right ends of the rear side surface of the vertical mounting plate, and each group of step baffles is symmetrically distributed on the upper and lower sides of the bidirectional threaded rod.

[0010] Preferably, the data collection component includes a hollow column fixed at the pushing end of the electric push rod, a through rod horizontally penetrates the side wall of the hollow column away from the electric push rod, one end of the through rod located outside the hollow column is rotatably mounted on the lower clamping block, a stable seat is fixed on the top of the limiting slider, the stable seat is rotatably connected to the through rod, a sliding square plate is fixed to the end of the through rod located in the hollow column, a front extension plate is fixed to the front side of the sliding square plate, a sliding groove matching the front extension plate is provided on the front side wall of the hollow column, and a scale is fixed on the front side of the hollow column and below the sliding groove.

[0011] Preferably, the sprinkler component includes a horizontal slide rail fixed to the bottom of the longitudinal section of the U-shaped fixing plate on the upper side, the horizontal slide rail is connected to a collective mounting plate via an electric slider, a plurality of evenly distributed sprinkler heads are hinged at the bottom of the collective mounting plate, and a rubber tube is connected to the top of the sprinkler head; an output water pump is installed at the top of the longitudinal section of the U-shaped fixing plate on the upper side, and a plurality of output ends of the output water pump are connected to the rubber tube.

[0012] Preferably, the U-shaped fixing plate is located at the bottom of the upper longitudinal section and is symmetrically fixed with a lower extension plate in front and behind the collective mounting plate, a horizontal rod is fixed at the bottom of the lower extension plate, and a plurality of push rods for pushing the sprinkler head are interspersed on opposite sides of the two horizontal rods.

[0013] Preferably, the track component includes two groups of extension rods symmetrically fixed at the left and right ends of the collective mounting plate, each group of extension rods consists of two extension rods distributed front and back, and track protrusions are fixed on the opposite sides of the two extension rods; the side of the data collection component near the corresponding position of the upper clamping block is fixed with a track rod matching the track protrusion, and the track rod and the track protrusion cooperate with each other, so that the sprinkler component can drive the upper clamping block and the lower clamping block to swing back and forth and drive the non-woven fabric to flip during the left and right reciprocating motion.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention adopts a soaking part to soak the automobile interior non-woven fabric, so that the test results are more diverse and closer to reality by using the working environment of the automobile interior non-woven fabric under a damp condition. At the same time, by sampling the same automobile interior non-woven fabric multiple times and conducting comparative tests, the tensile strength of the automobile interior non-woven fabric to be tested can be comprehensively evaluated by the change in the tensile strength of the automobile interior non-woven fabric to be tested under different environments.

[0015] 2. The present invention adopts a limiting component to limit the position of the automobile interior non-woven fabric, so that the positions of the two ends of the automobile interior non-woven fabric are the same, thereby avoiding deviations in the test results due to the skewness of the automobile interior non-woven fabric during the installation process, and the stretching component can stretch the automobile interior non-woven fabric during the downward movement of the upper clamp block, thereby preventing the automobile interior non-woven fabric from overlapping and ensuring the accuracy of the test results of the automobile interior non-woven fabric. In addition, since the elastic force of the tension spring is greater than the elastic force of the oblique spring, the two stretching plates can straighten the automobile interior non-woven fabric between the extrusion plate and the stretching plate, thereby further eliminating the hidden dangers of wrinkles and overlaps of the automobile interior non-woven fabric.

[0016] 3. The present invention uses an auxiliary component to block the movement of the bending push plate with a stepped baffle, and the stepped baffle is stepped, which can make the pushing distance of the bending push plate to the pressure plate change multiple times, thereby making the elastic force of the pressure spring used to stretch the automobile interior non-woven fabric change multiple times, so as to obtain the test data of the elongation of the automobile interior non-woven fabric under different tensile forces, and avoid the deviation of the test results due to the single test data.

[0017] Fourth, the present invention adopts a sprinkler component to sprinkle water on the automobile interior non-woven fabric in a left-right moving manner, and through the cooperation of the push rod and the rotatably installed sprinkler head, the sprinkler head can swing back and forth as the collective mounting plate moves back and forth, and at the same time, the track component can synchronously drive the positioning part to swing back and forth, so that the automobile interior non-woven fabric is turned over, thereby ensuring the uniformity of water sprinkling by the sprinkler head, and then ensuring that the water fully soaks the automobile interior non-woven fabric, so that the test results of the positioning part and the power part on the automobile interior non-woven fabric in the soaked state are more accurate and effective, and this method of soaking the automobile interior non-woven fabric is both convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the first viewing angle structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention.

[0021] Figure 3 It is a partial structural schematic diagram of the positioning part, the power part and the wetting part in the present invention.

[0022] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0023] Figure 5 It is a structural schematic diagram of the positioning part in the present invention.

[0024] Figure 6 It is a side partial cross-sectional view of the positioning portion in the present invention.

[0025] Figure 7 It is a partial structural schematic diagram of the through track, power unit and auxiliary components in the present invention after the through track on the front side is removed.

[0026] Figure 8 It is a partial cross-sectional view of the data collection component in the present invention.

[0027] Fig. 9 It is a schematic diagram of the structure of the positioning part and the wetting part in the present invention.

[0028] Fig.10 It is a partial structural schematic diagram of the positioning part and the local wetting part in the present invention.

[0029] In the figure: 1. Test area plate; 11. Vertical plate; 12. Middle through track; 121. Limiting slider; 122. Compression spring; 123. Compression plate; 13. Auxiliary component; 131. Limiting plate; 132. Longitudinal column; 133. Vertical baffle; 134. Vertical mounting plate; 135. Step baffle; 2. Positioning part; 21. Lower clamping block; 211. Square positioning column; 212. Upper clamping block; 213. Positioning stud; 22. Stretching component; 221. Mounting groove; 222. Connecting rod; 223. Stretching plate; 23. Limiting component; 231. Longitudinal through groove; 232. Positioning round rod; 233. Extrusion plate; 234. Spring plate; 235. Positioning square plate; 3. Power unit; 31. L-shaped mounting plate; 311. Electric push rod; 32. Data Collecting component; 321, hollow column; 322, through rod; 323, stable seat; 324, sliding square plate; 325, front extension plate; 326, scale; 33, pushing component; 331, center column; 332, two-way threaded rod; 333, motor; 334, bending push plate; 4, wetted part; 41, U-shaped fixing plate; 411, L-shaped through plate; 412, positioning hole; 413, horizontal mounting plate; 414, water collecting box; 42, sprinkler component; 421, horizontal slide rail; 422, collective mounting plate; 423, sprinkler head; 424, rubber tube; 425, output water pump; 426, lower extension plate; 427, horizontal rod; 428, pushing rod; 43, track component; 431, extension rod; 432, track protrusion; 433, track rod. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

[0031] See also Figure 1-Figure 2 A tensile strength testing device for automotive interior non-woven fabrics comprises a test area plate 1, a vertical plate 11 is symmetrically fixed to the top of the test area plate 1, a central track 12 is commonly fixed to the top of the two vertical plates 11, a positioning portion 2 is symmetrically arranged at the middle of the central track 12 through a limiting slider 121, a power portion 3 is commonly arranged on the two vertical plates 11, and a soaking portion 4 is arranged on the rear side of the central track 12.

[0032] The present invention clamps the automobile interior non-woven fabric first and then stretches it through the positioning part 2 and the power part 3, and the power part 3 can not only stretch the automobile interior non-woven fabric, but also straighten the automobile interior non-woven fabric before stretching, thereby ensuring that the initial data of each test is the same, and at the same time, the automobile interior non-woven fabric can be soaked with the wetting part 4 to simulate the working environment under rainy and humid conditions, so that the test results are more diverse and closer to reality. In addition, by sampling the same automobile interior non-woven fabric multiple times and conducting comparative tests, the tensile strength of the automobile interior non-woven fabric to be tested under different environments can be more accurately obtained.

[0033] Specifically, before testing the automotive interior non-woven fabric to be tested, first cut a section of standard sample and use the device to measure the elongation under different tensile forces, then cut two sections of equal length samples from the automotive interior non-woven fabric to be tested, and then install a section of non-woven fabric sample through the positioning part 2. After the installation is completed, the power part 3 is controlled to straighten the first section of the non-woven fabric sample, and then the auxiliary component 13 cooperates with the power part 3 to stretch the first section of the non-woven fabric sample multiple times, and the elongation of the first section of the non-woven fabric sample after each stretching is completed is recorded. After the test is completed, the first section of the non-woven fabric sample is taken out. The second section of the non-woven fabric sample is clamped by the positioning part 2, and the soaking part 4 is controlled to fully soak the second section of the non-woven fabric sample after the second section of the non-woven fabric sample is clamped. The soaked second section of the non-woven fabric sample is stretched multiple times with the same force as the first section of the non-woven fabric sample, and then the elongation of the second section of the non-woven fabric sample after each stretching is recorded. Finally, the tensile strength of the non-woven fabric to be tested under different environments is obtained through the extension data of the two sections of the non-woven fabric samples, and it is judged whether the tensile strength of the automotive interior non-woven fabric to be tested meets the requirements.

[0034] See also Figure 3 and Figure 5 The positioning part 2 includes a lower clamping block 21 hinged on the top of the limiting slider 121, a square positioning column 211 is fixed on the top of the lower clamping block 21, an upper clamping block 212 is slidably connected to the square positioning column 211, a positioning stud 213 is connected to the middle of the upper clamping block 212, and the bottom of the positioning stud 213 is rotatably installed on the top of the lower clamping block 21, and a stretching component 22 and a limiting component 23 are arranged between the upper clamping block 212 and the lower clamping block 21 from front to back. The limiting component 23 locks the end of the non-woven fabric by extrusion, and while the limiting component 23 locks the end of the non-woven fabric, the non-woven fabric is stretched flat by the stretching component 22.

[0035] The positioning portion 2 is used to clamp the non-woven fabric sample, so as to facilitate the subsequent stretching of the two ends of the non-woven fabric sample and ensure the stability of the non-woven fabric sample during the stretching process. At the same time, the stretching component 22 and the limiting component 23 cooperate with each other to stretch and position the non-woven fabric sample to prevent the non-woven fabric sample from being skewed after clamping, thereby ensuring the accuracy of the tensile strength test results of the non-woven fabric sample.

[0036] Specifically, first, the two ends of the non-woven fabric sample are limited by two limiting components 23, and then the positioning stud 213 is controlled to drive the upper clamp block 212 to move downward. During the downward movement of the upper clamp block 212, the stretching component 22 will stretch the non-woven fabric sample forward. After the stretching is completed, the non-woven fabric sample will be flat. When the upper clamp block 212 moves downward to fit with the top of the lower clamp block 21, the two will clamp the non-woven fabric sample.

[0037] See also Figure 5-Figure 6 The limiting component 23 includes a longitudinal through slot 231 arranged at the bottom of the upper clamping block 212, a positioning round rod 232 is vertically arranged in the middle of the upper clamping block 212 and corresponds to the longitudinal through slot 231, an extrusion plate 233 is fixed to the bottom of the positioning round rod 232, a spring plate 234 is fixed to the top of the positioning round rod 232, and a tension spring is connected between the spring plate 234 and the upper clamping block 212; a positioning square plate 235 matching the extrusion plate 233 is fixed to the top of the lower clamping block 21, and a positioning square plate 235 matching the extrusion plate 233 is arranged at the bottom of the upper clamping block 212 There is an avoidance groove for avoiding the positioning square plate 235 and the extrusion plate 233; the stretching component 22 includes a mounting groove 221 arranged on the top of the lower clamping block 21 and located on the front side of the positioning square plate 235, and the vertical relative positions of the mounting groove 221 and the longitudinal through groove 231 are hinged with connecting rods 222, and an oblique spring is connected between each connecting rod 222 and the corresponding upper clamping block 212 or lower clamping block 21, and each connecting rod 222 is hinged with a stretching plate 223 at a position away from the hinge point, and the two stretching plates 223 press against each other.

[0038] The limiting component 23 is used to limit the position of the non-woven fabric sample so that the positions of the two ends of the non-woven fabric sample are the same, thereby avoiding the situation where the non-woven fabric sample is skewed during the installation process and the tensile force applied to the non-woven fabric sample each time is different, thereby ensuring the accuracy and effectiveness of the test results, and the non-woven fabric sample can be pre-clamped with a tension spring so that the stretching component 22 will not change the position of the non-woven fabric sample when stretching the non-woven fabric sample, and the stretching component 22 can stretch the non-woven fabric sample during the downward movement of the upper clamping block 212, thereby preventing the non-woven fabric samples from overlapping, and the tensile strength of the overlapping non-woven fabric samples will change, thereby affecting the accuracy and effectiveness of the test results of the non-woven fabric samples.

[0039] Specifically, the operator first pulls up the spring plate 234 to move the extrusion plate 233 upward, and then places one end of the non-woven fabric sample under the extrusion plate 233 and fits one side of it against the positioning square plate 235, and then stops pulling up the spring plate 234, and the extrusion plate 233 will squeeze and limit the non-woven fabric sample downward, and then the operator places the non-woven fabric sample between the two stretching plates 223, and as the upper clamping block 212 moves downward, the two stretching plates 223 will continue to stretch and flatten the non-woven fabric sample due to the elastic force of the oblique springs, thereby eliminating the hidden danger of overlapping of the non-woven fabric samples, and because the elastic force of the tension spring is greater than the elastic force of the oblique spring, the two stretching plates 223 can straighten the non-woven fabric sample between the extrusion plate 233 and the stretching plate 223, thereby further eliminating the hidden dangers of wrinkles and overlaps during the installation of the non-woven fabric samples.

[0040] See also Figure 2 , Figure 3 and Figure 7 The power unit 3 includes an L-shaped mounting plate 31 fixed on the opposite sides of the two vertical plates 11. The vertical section of the L-shaped mounting plate 31 and the side close to the positioning part 2 are connected by an electric push rod 311 to be provided with a data collection component 32. The left end of the data collection component 32 is rotatably mounted on the corresponding lower clamping block 21. The opposite sides of the two limit sliders 121 are fixed with compression springs 122, and the opposite ends of the two compression springs 122 are fixed with compression plates 123. The power unit 3 also includes a pressure plate 123 arranged on the top of the test area plate 1 The pushing component 33 includes a median column 331 fixed on the top of the test area plate 1, a horizontal bidirectional threaded rod 332 is rotatably installed in the middle of the median column 331, the right end of the bidirectional threaded rod 332 passes through the vertical plate 11 on the right, and a motor 333 is installed on the right side of the vertical plate 11 on the right through a motor box, the output end of the motor 333 is connected to the bidirectional threaded rod 332, and the bidirectional threaded rod 332 is symmetrically connected with a bent push plate 334 for pushing the pressure plate 123.

[0041] The power unit 3 can not only control the positioning unit 2 to straighten the non-woven fabric sample horizontally, but also cooperate with the positioning unit 2 to stretch the non-woven fabric sample through the pushing component 33 to test the elongation of each section of the non-woven fabric sample under the same tensile force. The pushing component 33 is used to press the pressure plate 123 to stretch the non-woven fabric through the elastic force of the pressure spring 122. At the same time, the data collection component 32 can quickly measure the elongation of the non-woven fabric sample after stretching.

[0042] Specifically, after the positioning part 2 has clamped the non-woven fabric sample, the positioning part 2 is pulled outward by the electric push rod 311, so that the non-woven fabric sample is in a straightened state, and then the motor 333 is controlled to drive the bidirectional threaded rod 332 to rotate. As the bidirectional threaded rod 332 rotates, the two bending push plates 334 will move outward and press the pressure plate 123, so that the pressure spring 122 is compressed, and the pressure spring 122 transmits the elastic force to the limit slider 121, thereby driving the two positioning parts 2 to stretch the non-woven fabric sample, and the data collection component 32 collects data on the elongation of the non-woven fabric sample.

[0043] See also Figure 2 and Figure 7 , an auxiliary component 13 for cooperating with the power unit 3 is fixed on the top of the test area plate 1 and located in front of the middle through track 12, the auxiliary component 13 includes a limit plate 131 fixed on the top of the test area plate 1, a longitudinal column 132 is slidably connected in the middle of the limit plate 131, a vertical baffle 133 is fixed at the front end of the longitudinal column 132, a position locking structure is jointly provided on the limit plate 131 and the longitudinal column 132, a vertical mounting plate 134 is fixed at the rear end of the longitudinal column 132, and two groups of step baffles 135 for blocking the bending push plate 334 are symmetrically fixed at the left and right ends of the rear side of the vertical mounting plate 134, and each group of step baffles 135 are symmetrically distributed on the upper and lower sides of the bidirectional threaded rod 332; the locking structure includes a locking hole arranged on the limit plate 131, and a plurality of matching holes with the same number of steps of the step baffle 135 are arranged on the longitudinal column 132, and a positioning pin is jointly connected to the locking hole and the matching hole at the corresponding position.

[0044] The auxiliary component 13 is used to block the movement of the bending push plate 334 through the step baffle 135, and the step baffle 135 is stepped, which can make the bending push plate 334 change the pushing distance of the pressure plate 123 multiple times, thereby making the elastic force of the pressure spring 122 used to stretch the non-woven fabric sample change multiple times, so as to obtain the test data of the elongation of the non-woven fabric sample under different tensile forces, avoid the deviation of the test results due to the single test data, and ensure that the magnitude of the tensile force is the same each time each non-woven fabric sample and the standard sample are stretched, thereby ensuring the accuracy of the test results.

[0045] Specifically, when the two-way threaded rod 332 drives the two bending push plates 334 to move outward, the step baffle 135 will block the bending push plates 334. When the data recording of the data collection component 32 is completed, the positioning pin is pulled out, the longitudinal column 132 is pulled forward, and then the positioning pin is inserted again. During the whole process, the step baffle 135 will move forward. At this time, the two-way threaded rod 332 is controlled again to drive the two bending push plates 334 to move outward until the two bending push plates 334 are blocked by the step baffle 135 again, and the elongation of the non-woven fabric sample is recorded again through the data collection component 32, so as to obtain the elongation of the non-woven fabric sample under the action of different tensile forces, and because the multiple tensile forces when stretching each section of the non-woven fabric sample are controlled by the step baffle 135 and are equal, it is convenient to quickly compare the elongation of the non-woven fabric sample to be tested with the elongation of the standard sample, and then it is convenient to evaluate the tensile strength of the non-woven fabric sample through the elongation comparison result.

[0046] See also Figure 3 , Figure 7 and Figure 8 The data collection component 32 includes a hollow column 321 fixed at the pushing end of the electric push rod 311, and a through rod 322 is horizontally penetrated through the side wall of the hollow column 321 away from the electric push rod 311, and the end of the through rod 322 located outside the hollow column 321 is rotatably installed on the lower clamping block 21, and a stable seat 323 is fixed on the top of the limiting slider 121, and the stable seat 323 is rotatably connected to the through rod 322, and a sliding square plate 324 is fixed to the end of the through rod 322 located in the hollow column 321, and a front extension plate 325 is fixed to the front side of the sliding square plate 324, and a sliding groove matching the front extension plate 325 is provided on the front side wall of the hollow column 321, and a scale 326 is fixed on the front side of the hollow column 321 and below the sliding groove.

[0047] The data collection component 32 is used to measure and record the elongation of the non-woven fabric sample. Specifically, since the non-woven fabric sample will stretch the two positioning parts 2 after being straightened, the sliding square plate 324 will fit in the initial position of the scale 326. When the compression spring 122 is compressed and pushes the two positioning parts 2 to stretch the non-woven fabric sample, the sum of the movement distances of the two positioning parts 2 compared to the initial positions is the elongation of the non-woven fabric sample. The readings of the alignment front extension plates 325 on the two scales 326 are read, and the readings are added to obtain the elongation of the non-woven fabric sample when the compression spring 122 stretches the non-woven fabric sample, thereby facilitating the evaluation of the tensile strength of the non-woven fabric sample by directly comparing the elongation data.

[0048] If the non-woven fabric sample breaks when the compression spring 122 transmits the elastic force to the limit slider 121, thereby driving the two positioning parts 2 to stretch the non-woven fabric sample, it indicates that the tensile strength of the automotive interior non-woven fabric sample to be tested is poor and does not meet the standard. If the selected non-woven fabric samples at both ends are stretched by different tensile forces, the elongation of each stretch is greater than the elongation of the standard sample under the same tensile force and is outside the allowable error range, it indicates that the tensile strength of the automotive interior non-woven fabric sample to be tested is poor and does not meet the standard. If the elongation of each stretch is less than the elongation of the standard sample under the same tensile force or greater than the elongation of the standard sample and is within the allowable error range, it indicates that the tensile strength of the automotive interior non-woven fabric sample to be tested meets the standard.

[0049] The elongation of the non-woven fabric sample each time it is stretched in a soaked state must be greater than the elongation each time it is stretched in a water-free environment. However, if the difference in the elongation of the non-woven fabric sample each time it is stretched in a water-free environment and in a soaked state is not large, it indicates that soaking the non-woven fabric will not significantly reduce the tensile strength of the automotive interior non-woven fabric to be tested. If the difference in the elongation of the non-woven fabric sample each time it is stretched in a water-free environment and in a soaked state is large, it indicates that soaking the non-woven fabric will significantly reduce the tensile strength of the automotive interior non-woven fabric to be tested.

[0050] See also Figure 3 , Fig. 9 and Fig.10 The soaking part 4 includes a U-shaped fixing plate 41 fixed to the rear side of the central through rail 12. The front end of the longitudinal section of the U-shaped fixing plate 41 located on the upper side is provided with a sprinkling component 42 which moves back and forth left and right and soaks the non-woven fabric. A track component 43 for turning the non-woven fabric is connected between the left and right ends of the sprinkling component 42 and the upper clamping block 212. The track component 43 changes the sprinkling track of the sprinkling component 42 so that the non-woven fabric is fully soaked.

[0051] The soaking part 4 is used to soak the non-woven fabric sample, so as to perform tensile strength tests on the non-woven fabric samples under different environments, and further comprehensively evaluate the tensile strength of the automotive interior non-woven fabric to be tested, and the water sprinkling component 42 that reciprocates left and right can make the water fully soak the non-woven fabric sample, and at the same time cooperate with the track component 43 to make the non-woven fabric sample flip, thereby further ensuring that the water fully soaks the non-woven fabric sample.

[0052] Specifically, when the second section of the non-woven fabric sample is clamped by the positioning part 2, the water sprinkling component 42 is first controlled to move back and forth to sprinkle water, and the positioning part 2 is driven to swing back and forth through the track component 43, so that the second section of the non-woven fabric sample is turned over, and then the water sprinkled by the water sprinkling component 42 can fully soak the second section of the non-woven fabric sample, so as to ensure the accuracy and effectiveness of the test data.

[0053] See also Figure 9-10 The sprinkler component 42 includes a horizontal slide rail 421 fixed to the bottom of the longitudinal section of the U-shaped fixing plate 41 on the upper side, and a collective mounting plate 422 is connected to the horizontal slide rail 421 through an electric slider. A plurality of evenly distributed sprinkler heads 423 are hinged at the bottom of the collective mounting plate 422, and a rubber tube 424 is connected to the top of the sprinkler head 423; an output water pump 425 is installed at the top of the longitudinal section of the U-shaped fixing plate 41 on the upper side, and a plurality of output ends of the output water pump 425 are connected to the rubber tube 424; a lower extension plate 426 is fixed symmetrically to the front and rear of the U-shaped fixing plate 41 at the bottom of the longitudinal section on the upper side and the collective mounting plate 422, and a horizontal rod 427 is fixed to the bottom of the lower extension plate 426, and a plurality of push rods 428 for pushing the sprinkler head 423 are interspersed on the opposite sides of the two horizontal rods 427.

[0054] The watering component 42 is used to sprinkle water on the non-woven fabric sample in a left-right moving manner, and through the cooperation of the push rod 428 and the rotatably installed watering head 423, the watering head 423 can swing back and forth as the collective mounting plate 422 reciprocates left and right, thereby ensuring the uniformity of water sprinkling by the watering head 423, and then ensuring that the water fully soaks the non-woven fabric sample, making the test results of the non-woven fabric sample in the soaked state more accurate and effective.

[0055] Specifically, when the second section of the non-woven fabric sample is in a straightened state due to the electric push rod 311 pulling the positioning part 2 outward, the electric slider is first controlled to drive the collective mounting plate 422 to reciprocate left and right. At this time, the output water pump 425 is controlled to pass water to each rubber tube 424, and finally water is sprayed out from the sprinkler head 423 and falls on the second section of the non-woven fabric sample. When the sprinkler head 423 contacts the front and rear distributed push rods 428 in turn, the sprinkler head 423 will swing back and forth, so that the water is evenly sprinkled on the second section of the non-woven fabric sample.

[0056] Continue reading Figure 9-10 The track component 43 includes two groups of extension rods 431 symmetrically fixed on the left and right ends of the collective mounting plate 422, each group of extension rods 431 is composed of two extension rods 431 distributed front and back, and the opposite sides of the two extension rods 431 are fixed with track protrusions 432; the side of the upper clamping block 212 close to the corresponding position of the data collection component 32 is fixed with a track rod 433 matching the track protrusion 432, and the track rod 433 cooperates with the track protrusion 432, so that the sprinkler component 42 can drive the upper clamping block 212 and the lower clamping block 21 to swing back and forth and drive the non-woven fabric to flip during the reciprocating motion of the sprinkler component 42.

[0057] The track component 43 is used to synchronously drive the positioning part 2 to swing back and forth with the power of the electric slider, which can make the non-woven fabric sample flip over so that the water on its surface flows to the unwetted part, thereby ensuring that the non-woven fabric sample is fully soaked while saving water, and can also cooperate with the movement of the sprinkler head 423 to make the water fall more evenly on the non-woven fabric sample.

[0058] Specifically, when the electric slider drives the collective mounting plate 422 to reciprocate left and right, the track protrusion 432 will drive the track rod 433 to swing back and forth, thereby causing the upper clamping block 212 and the lower clamping block 21 to swing back and forth, and drive the second section of the non-woven fabric sample to flip over. As the sprinkler head 423 sprays water downward, the sprayed water fully contacts the second section of the non-woven fabric sample, thereby ensuring that the second section of the non-woven fabric sample is fully soaked.

[0059] In this embodiment, if Fig. 9 As shown, in order to improve the utilization rate of water resources, an L-shaped through-plate 411 is longitudinally penetrated on the vertical section of the U-shaped fixing plate 41, the vertical section of the L-shaped through-plate 411 is located at the rear side of the U-shaped fixing plate 41 and a clearance hole is provided in the middle thereof, the vertical section of the U-shaped fixing plate 41 is provided with a positioning hole 412 that matches the clearance hole, a horizontal mounting plate 413 is fixed to the front end of the L-shaped through-plate 411, and a water collecting box 414 is slidably installed on the horizontal mounting plate 413. The water collecting box 414 can not only collect the excess water spilled, but also avoid the test area plate 1 from accumulating too much water, which may affect the maintenance of the waterless environment during the subsequent test process due to the evaporation of water, thereby preventing the accuracy of the tensile strength test results of non-woven fabrics under different environments from being affected.

[0060] The working steps of the present invention are as follows: the first step is to cut a section of standard sample and use the device to measure the elongation under different tensile forces before testing the automotive interior non-woven fabric to be tested, and then cut two sections of samples with the same length as the standard sample from the automotive interior non-woven fabric to be tested, and then use two limiting components 23 to limit the two ends of the first section of the non-woven fabric sample, and then control the positioning stud 213 to drive the upper clamping block 212 to move downward. During the downward movement of the upper clamping block 212, the flattening component 22 will stretch the first section of the non-woven fabric sample forward and make the first section of the non-woven fabric sample flat. When the upper clamping block 212 moves downward to fit with the top of the lower clamping block 21, the two will clamp the first section of the non-woven fabric sample.

[0061] In the second step, after the positioning part 2 has clamped the first section of the non-woven fabric sample, the positioning part 2 is pulled outward by the electric push rod 311, so that the first section of the non-woven fabric sample is in a straightened state, and then the motor 333 is controlled to drive the bidirectional threaded rod 332 to rotate. As the bidirectional threaded rod 332 rotates, the two bending push plates 334 will move outward and press the pressure plate 123, so that the pressure spring 122 is compressed, and the pressure spring 122 transmits the elastic force to the limit slider 121, thereby driving the two positioning parts 2 to stretch the first section of the non-woven fabric sample, and the data collection component 32 is used to collect data on the elongation of the first section of the non-woven fabric sample.

[0062] The third step, when the bidirectional threaded rod 332 drives the two bending push plates 334 to move outward, the step baffle 135 will block the bending push plates 334. After the data recording of the data collection component 32 is completed, the positioning pin is pulled out, the longitudinal column 132 is pulled forward, and then the positioning pin is inserted again. During this process, the step baffle 135 will move forward. At this time, the bidirectional threaded rod 332 is controlled again to drive the two bending push plates 334 to move outward until the two bending push plates 334 are blocked by the step baffle 135 again, and the elongation of the first section of the non-woven fabric sample is recorded again through the data collection component 32. After repeated many times, the elongation of the first section of the non-woven fabric sample under different tensile forces can be obtained, thereby evaluating the tensile strength of the automotive interior non-woven fabric.

[0063] In the fourth step, after the test of the first section of the non-woven fabric sample is completed, the operator pushes the positioning part 2 back to its original position and controls all components to return to their original positions, and clamps and installs the second section of the non-woven fabric sample through the positioning part 2, and then controls the electric push rod 311 to pull the positioning part 2 outward, so that the second section of the non-woven fabric sample is in a straightened state, first control the electric slider to drive the assembly mounting plate 422 to reciprocate left and right, and at this time control the output water pump 425 to pass water to each rubber tube 424, and finally water is sprayed out from the sprinkler head 423 and falls on the second section of the non-woven fabric sample, when the sprinkler head 423 contacts the front and rear distributed push rods 428 in turn, the sprinkler head 423 will swing back and forth, so that the water is evenly sprinkled on the second section of the non-woven fabric sample.

[0064] The fifth step is to stop the movement of the electric slider after the second section of the non-woven fabric sample is fully soaked, and then repeat the test of the first section of the non-woven fabric sample in the first three steps to test the second section of the non-woven fabric sample, so as to obtain the tensile elongation of the automotive interior non-woven fabric in the soaked state.

[0065] Finally, the elongation of the automotive interior non-woven fabric in a water-free environment and in a soaked state under different tensile forces is compared with the elongation of the standard sample under the same tensile force, so as to determine whether the tensile strength of the automotive interior non-woven fabric to be tested meets the standard. If the non-woven fabric sample breaks during the process in which the compressed spring 122 transmits the elastic force to the limit slider 121, thereby driving the two positioning parts 2 to stretch the non-woven fabric sample, it indicates that the tensile strength of the automotive interior non-woven fabric sample to be tested is poor and does not meet the standard. If the selected non-woven fabric samples at both ends are stretched by different tensile forces, the elongation of each stretch is greater than the elongation of the standard sample under the same tensile force and is outside the allowable error range, it indicates that the tensile strength of the automotive interior non-woven fabric sample to be tested is poor and does not meet the standard. If the elongation of each stretch is less than the elongation of the standard sample under the same tensile force or greater than the elongation of the standard sample under the same tensile force and is within the allowable error range, it indicates that the tensile strength of the automotive interior non-woven fabric sample to be tested meets the standard.

[0066] The elongation of the non-woven fabric sample each time it is stretched in a soaked state must be greater than the elongation each time it is stretched in a water-free environment. However, if the difference in the elongation of the non-woven fabric sample each time it is stretched in a water-free environment and in a soaked state is not large, it indicates that soaking the non-woven fabric will not significantly reduce the tensile strength of the automotive interior non-woven fabric to be tested. If the difference in the elongation of the non-woven fabric sample each time it is stretched in a water-free environment and in a soaked state is large, it indicates that soaking the non-woven fabric will significantly reduce the tensile strength of the automotive interior non-woven fabric to be tested.

[0067] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A tensile strength test device for automobile interior nonwoven fabrics, comprising a test area plate, a vertical plate fixed symmetrically on the top of the test area plate, and a central through track fixed on the top of the two vertical plates, characterized in that: The middle part of the through track is symmetrically provided with a positioning part through a limit slider, the two vertical plates are jointly provided with a power part, the rear side of the through track is provided with a wetted part, and the top of the test area plate and located on the front side of the through track is fixed with an auxiliary component for cooperating with the power part; The positioning part includes a lower clamping block hinged on the top of the limiting sliding block, a square positioning column is fixed on the top of the lower clamping block, an upper clamping block is slidably connected to the square positioning column, a positioning stud is connected to the middle of the upper clamping block, the bottom of the positioning stud is rotatably mounted on the top of the lower clamping block, and a stretching component and a limiting component are sequentially arranged between the upper clamping block and the lower clamping block from front to back; the power part includes an L-shaped mounting plate fixed to the opposite sides of the two vertical plates, a data collection component is arranged on the vertical section of the L-shaped mounting plate and the side close to the positioning part through an electric push rod, and the left end of the data collection component is rotatably mounted on the corresponding lower clamping block; The limiting component includes a longitudinal through slot arranged at the bottom of the upper clamping block, a positioning round rod is vertically arranged in the middle of the upper clamping block and corresponds to the longitudinal through slot, an extrusion plate is fixed at the bottom of the positioning round rod, a spring plate is fixed at the top of the positioning round rod, and a tension spring is connected between the spring plate and the upper clamping block; a positioning square plate matching the extrusion plate is fixed at the top of the lower clamping block, and an avoidance groove for avoiding the positioning square plate and the extrusion plate is arranged at the bottom of the upper clamping block; The stretching component includes a mounting groove arranged on the top of the lower clamping block and located on the front side of the positioning square plate, the mounting groove and the longitudinal through groove are both hinged with connecting rods at the vertical relative positions, an oblique spring is connected between each connecting rod and the corresponding upper clamping block or lower clamping block, and a stretching plate is hinged at a position of each connecting rod away from the hinge point, and the two stretching plates are pressed against each other; The opposite sides of the two limit sliders are fixed with compression springs, and the opposite ends of the two compression springs are fixed with compression plates; the power unit also includes a pushing component arranged on the top of the test area plate, and the pushing component is used to press the compression plate and stretch the non-woven fabric through the elastic force of the compression spring; the soaking unit includes a U-shaped fixing plate fixed to the rear side of the central through track, and the front end of the longitudinal section of the U-shaped fixing plate located on the upper side is provided with a watering component that reciprocates left and right, and a track component for controlling the flipping of the non-woven fabric is connected between the left and right ends of the watering component and the upper clamping block; The water sprinkling component comprises a horizontal slide rail fixed to the bottom of the longitudinal section of the U-shaped fixing plate located on the upper side, a collection mounting plate is connected to the horizontal slide rail via an electric slider, a plurality of evenly distributed sprinkler heads are hinged at the bottom of the collection mounting plate, and a rubber tube is connected to the top of the sprinkler head; an output water pump is installed at the top of the longitudinal section of the U-shaped fixing plate located on the upper side, and a plurality of output ends of the output water pump are connected to the rubber tube; The U-shaped fixing plate is located at the bottom of the upper longitudinal section and is symmetrically fixed with a lower extension plate in front and behind the collective installation plate. A horizontal rod is fixed at the bottom of the lower extension plate. A plurality of push rods for pushing the sprinkler head are interspersed on opposite sides of the two horizontal rods. The track component includes two groups of extension rods symmetrically fixed on the left and right ends of the collective mounting plate, each group of extension rods consists of two extension rods distributed front and back, and track protrusions are fixed on the opposite sides of the two extension rods; the side of the data collection component near the corresponding position of the upper clamping block is fixed with a track rod that matches the track protrusion, and the track rod and the track protrusion cooperate with each other, so that the sprinkler component can drive the upper clamping block and the lower clamping block to swing back and forth during the reciprocating movement of the sprinkler component, and drive the non-woven fabric to flip.

2. The tensile strength testing device for automotive interior nonwoven fabrics according to claim 1, characterized in that: The pushing component includes a median column fixed on the top of the test area plate, a horizontal bidirectional threaded rod is rotatably installed in the middle of the median column, the right end of the bidirectional threaded rod passes through the vertical plate on the right, a motor is installed on the right side of the vertical plate on the right through a motor box, the output end of the motor is connected to the bidirectional threaded rod, and the bidirectional threaded rod is symmetrically connected to a bent push plate for pushing the pressure plate.

3. The tensile strength testing device for automotive interior nonwoven fabrics according to claim 2, characterized in that: The auxiliary component includes a limit plate fixed on the top of the test area plate, a longitudinal column is slidably connected to the middle of the limit plate, a vertical baffle is fixed to the front end of the longitudinal column, a position locking structure is jointly arranged on the limit plate and the longitudinal column, a vertical mounting plate is fixed to the rear end of the longitudinal column, and two groups of step baffles for blocking the bending push plates are symmetrically fixed on the left and right ends of the rear side of the vertical mounting plate, and each group of step baffles is symmetrically distributed on the upper and lower sides of the bidirectional threaded rod.

4. The tensile strength testing device for automotive interior nonwoven fabrics according to claim 1, characterized in that: The data collection component includes a hollow column fixed at the pushing end of the electric push rod, a through rod horizontally penetrates the side wall of the hollow column away from the electric push rod, the end of the through rod located outside the hollow column is rotatably installed on the lower clamping block, a stable seat is fixed on the top of the limiting slider, the stable seat and the through rod are rotatably connected, a sliding square plate is fixed at one end of the through rod located in the hollow column, a front extension plate is fixed on the front side of the sliding square plate, a sliding groove matching the front extension plate is provided on the front side wall of the hollow column, and a scale is fixed on the front side of the hollow column and below the sliding groove.

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