A waterproof performance detection device for leather lining fabric

Abstract

The application discloses a waterproof performance detection device for leather lining fabric and belongs to the technical field of fabric waterproof detection. The bottom of the fabric is attached to the pressing ring in the pressing assembly, the recessed part of the fabric is deepened, the purpose of fabric stretching is achieved, the driving mechanism drives the swing top material assembly to work, and then drives the multiple pressing heads at the bottom to regularly reciprocate up and down. Meanwhile, the second spring of the pressing assembly can be self-adaptingly stretched and contracted according to the reciprocating force of the pressing head, the pressing ring is always closely attached to the fabric, the fabric is prevented from being displaced in the dynamic movement process, the fabric detection area is partially immersed in the detection medium, the wet sensitive sensor continuously works, whether there is moisture penetration in the fabric is monitored in real time, the pressing head is used in cooperation with the pressing ring to simulate the repeated bending, extruding and pressing actions in the actual use of the fabric, the real stress scene of the attached fabric is simulated, the detection error is reduced, and the micro defects of the waterproof structure of the fabric can be accurately identified.

Description

Technical Field

[0001] This invention relates to the field of waterproof testing technology for fabrics, specifically a device for testing the waterproof performance of leather lining fabrics. Background Technology

[0002] Leather lining fabric, as a type of functional material that combines soft touch, moisture absorption and breathability, and structural support, is widely used in high-end footwear, luxury leather goods, functional clothing, and some medical protective equipment. Its core function is to fit the inner wall of the product, improve the comfort of use, protect the outer structure, and extend the overall service life of the product.

[0003] Existing testing equipment is prone to damage and wrinkling of the fabric due to improper clamping force during testing, or the testing accuracy is affected by unreasonable support structure, making it impossible to truly reflect the waterproof performance of the fabric in actual use. Secondly, leather linings are repeatedly subjected to dynamic forces such as bending, stretching, and compression in actual use. These dynamic conditions will cause changes in the internal fiber structure of the fabric and the formation of micro-cracks in the waterproof coating, thereby accelerating water penetration. Static testing cannot simulate the waterproof performance degradation process under such dynamic scenarios, resulting in a large deviation between the test results and the actual use effect, making it difficult to accurately identify the microscopic defects of the fabric's waterproof structure. Summary of the Invention

[0004] The purpose of this invention is to provide a waterproof performance testing device for leather lining fabrics, in order to solve the problem mentioned in the background art that leather linings are repeatedly subjected to dynamic effects such as bending, stretching, and squeezing in actual applications. This dynamic working condition will cause changes in the internal fiber structure of the fabric and micro-cracks in the waterproof coating, thereby accelerating water penetration. Static testing cannot simulate the waterproof performance degradation process under such dynamic scenarios, resulting in a large deviation between the test results and the actual use effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A waterproof performance testing device for leather lining fabric includes a base plate, a working frame and a vertical plate fixed on the base plate, the vertical plate fixed to one side of the working frame, a testing frame located at the lower part of the working frame, sliding columns fixedly connected to the front and rear sides of the testing frame, guide grooves respectively formed on the front and rear sides of the working frame corresponding to the positions of two sliding columns, the sliding columns sliding through the guide grooves, the guide grooves being composed of inclined sections and straight sections, with the sliding column currently sliding through the lowest end of the inclined section in the guide groove, pressure grooves formed at the four corners of the inner wall of the testing frame, limit detection components installed in the pressure grooves, and grooves formed at the four corners of the testing frame, the ends of the limit detection components sliding through the grooves, the four limit... A pressing component is fixed to the top of the detection component. A water immersion tank is provided below the detection frame and installed at the bottom of the inner wall of the work frame. A pushing component is fixedly connected to the side of the detection frame near the upright plate and is installed through the upright plate. An adjusting component is installed on the top of the upright plate. A movable seat is fixedly connected to one side of the adjusting component. A driving mechanism is installed on the top of the movable seat. A swinging material lifting component is fixed at the bottom of the driving mechanism. A support component is fixed at the bottom of the movable seat corresponding to the position below the swinging material lifting component. The swinging material lifting component slides through the support component. A pressing component is fixed at the center of the bottom of the support component. The bottom ends of the pressing component and the swinging material lifting component are located directly above the detection frame.

[0007] As a further embodiment of the present invention, the limiting detection component includes a pressure seat, in which a humidity sensor is provided. The pressure seat is designed in an inverted conical shape and slides within a pressure groove. A sliding rod is fixed to the extension at the top of the pressure seat. The sliding rod slides through the groove, and a first spring is sleeved on the outside of the sliding rod. The two ends of the first spring are respectively fixed to the bottom end of the sliding rod and the top of the inner wall of the groove.

[0008] As a further embodiment of the present invention, the pressing assembly includes a support frame, and the support frame is provided with clearance grooves at the positions corresponding to the four pressing seats. The tops of the four pressing seats are fixed to the bottom of the support frame. Fixed posts are fixed at the four corners of the support frame, and tie rods are fixed between two adjacent fixed posts.

[0009] As a further embodiment of the present invention, the pushing component includes a fixing frame, which is fixed to one side of the upright plate. A groove is provided on one side of the inner wall of the fixing frame, and a slider is slidably connected in the groove. The slider and the groove are both T-shaped. An electro-hydraulic push rod is fixedly connected to one side of the slider, and the other end of the electro-hydraulic push rod is fixedly connected to one side of the detection frame. A guide block is fixed to the outside of the electro-hydraulic push rod. The guide block is I-shaped and slides through the groove in the upright plate.

[0010] As a further embodiment of the present invention, the adjustment assembly includes a motor, which is mounted on the top of the upright plate. The output shaft of the motor is fixedly connected to a lead screw, and the bottom end of the lead screw is rotatably connected to the bottom of the inner wall of the upright plate through a bushing. A nut is externally threaded onto the lead screw, and one side of the nut is fixed to a movable seat.

[0011] As a further embodiment of the present invention, the oscillating top material assembly includes an oscillating swashplate, the top of which is rotatably connected to an oscillating seat and fixed to the bottom of a drive mechanism. An annular slide rail is provided at the bottom edge of the oscillating swashplate, and several baffles are slidably connected within the slide rail. A connecting cylinder is fixed to the bottom of each baffle. A ball groove is provided at the bottom of the connecting cylinder, and a ball rod is movably connected inside the ball rod. A vertical rod is fixedly connected to the bottom of the ball rod, and the bottom of the vertical rod passes through a support assembly and is fixed with a pressure head. A movable groove is provided at the center of the bottom of the oscillating swashplate.

[0012] As a further embodiment of the present invention, the support assembly includes a ring frame, which is fixed to the bottom of the movable seat. A support rod is fixed at the center of the top of the ring frame, and a ball is fixed at the top of the support rod. The ball is movably connected in the movable groove, and the upright slides through the ring frame.

[0013] As a further embodiment of the present invention, the pressing assembly includes a pressing ring located between several pressing heads. A telescopic rod is fixedly connected to the middle of the pressing ring. The top end of the telescopic rod is fixed to the bottom of the ring frame. A second spring is sleeved on the outside of the telescopic rod. The two ends of the second spring are fixedly connected to the opposite surfaces of the ring frame and the pressing ring, respectively.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention activates the adjusting component until the pressure ring of the pressing component and the pressure head of the swinging top component descend to near the interior of the leather lining fabric. At this point, the pressure ring in the pressing component fits against the bottom of the fabric, deepening the concave areas and stretching the fabric. The drive mechanism drives the swinging swashplate to rotate via the swinging seat, causing the movable groove at the bottom of the swinging swashplate to rotate outside the ball at the top of the support rod of the support component. The ball at the top of the support rod provides stable support for the swinging swashplate, causing it to rotate and swing. During the rotation and swing of the swinging swashplate, its bottom annular slide is inclined. The stop bar in the slide slides synchronously within the inclined annular slide along the rotational swing trajectory of the swinging swashplate. The stop bar drives the connecting cylinder, ball rod, and upright rod synchronously. The movement involves the top of the cue stick moving inside the ball groove, while the upright slides within the ring frame of the support assembly. Combined with the rotational swaying trajectory of the swashplate, this drives multiple pressure heads at the bottom to perform regular up-and-down reciprocating movements. Simultaneously, the second spring of the pressure assembly can adaptively extend and retract according to the up-and-down reciprocating force of the pressure heads, ensuring that the pressure ring always fits tightly against the fabric and preventing the fabric from shifting during dynamic movement. The fabric detection area is partially immersed in the detection medium, and the moisture sensor works continuously to monitor in real time whether there is moisture penetration inside the fabric. The use of the pressure head in conjunction with the pressure ring simulates the repeated bending, squeezing, and pressing actions of the fabric in actual use, closely matching the real stress scenarios of the fabric, reducing detection errors, and accurately identifying microscopic defects in the waterproof structure of the fabric. 2. In this invention, an electro-hydraulic push rod pulls the detection frame towards the immersion tank. The sliding columns on both sides of the detection frame slide within the guide groove of the work frame. At this time, the sliding columns move horizontally along the straight section of the guide groove. When the sliding column reaches the connection between the straight section and the inclined section of the guide groove, it continues to slide downwards along the inclined section of the guide groove under the pulling force of the electro-hydraulic push rod. As the sliding column moves downwards, the detection frame gradually tilts and moves downwards until the sliding column reaches the lowest point of the inclined section of the guide groove. At this point, the recessed part of the fabric in the detection frame is immersed in the detection medium in the immersion tank, completing the detection process. After the operation, the electric hydraulic push rod extends and moves the detection frame and the detected fabric to the right. The sliding columns on the front and rear sides of the detection frame slide in opposite directions in the guide groove of the work frame. At this time, the sliding columns first slide upward along the inclined section of the guide groove. As the sliding columns move upward, the detection frame, which was originally tilted downward, gradually returns to its original position and tends to be horizontal, separating from the detection medium in the immersion tank. Until the sliding columns slide to the connection between the inclined section and the straight section of the guide groove, the detection frame returns to its initial position, which facilitates the picking and putting of fabric, realizes consistent operation during batch testing, and improves testing efficiency. 3. In this invention, by lifting the pull rod, the pull rod drives two adjacent fixed columns to move upward synchronously. The fixed columns then drive the entire support frame to move upward. The support frame, through four sliding rods, pulls the limiting detection component upward synchronously, causing the pressure seat to disengage from the pressure groove on the inner wall of the detection frame. At this time, the sliding rod slides upward within the groove of the detection frame, laying the leather lining fabric to be tested on the top detection surface of the detection frame, ensuring that the fabric covers the entire detection area. After the fabric is laid, the pull rod is released, the first spring returns to its original deformation, and pulls the sliding rod and the support frame to return to their original position synchronously. The support frame then drives the four pressure seats to move downward synchronously. The pressure base is pressed tightly against the four corners of the leather lining fabric, thus fixing the fabric at the four corners. The moisture sensor built into the pressure base is in close contact with the bottom of the fabric, which does not damage the fabric and ensures that the signal can be quickly captured when moisture penetrates. At the same time, the inverted conical design of the pressure base increases the contact area with the fabric, avoiding excessive local pressure that could damage the fabric. In addition, during the pressing process, the fabric can be recessed into the detection frame, so that the fabric can come into contact with the water in the immersion tank, improving the ease of operation for subsequent testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the pressing assembly and work frame of the present invention; Figure 4 This is a schematic diagram of the push component of the present invention; Figure 5 This is a schematic diagram of the structure where the detection frame and the pressing assembly are separated according to the present invention; Figure 6 This is a schematic diagram of the structure of the limit detection component of the present invention; Figure 7 This is a schematic diagram of the structure of the movable seat and the swing top assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the support component of the present invention; Figure 9 This is a schematic diagram of a partial cross-section of the swashplate of the present invention; Figure 10 This is a partial structural diagram of the swing top material assembly of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. Work frame; 3. Vertical plate; 4. Detection frame; 5. Sliding column; 6. Guide groove; 7. Pressing groove; 8. Groove; 9. Limit detection assembly; 901. Pressing seat; 902. Sliding rod; 903. First spring; 10. Pressing assembly; 101. Support frame; 102. Clearance groove; 103. Fixed column; 104. Pull rod; 11. Immersion tank; 12. Pushing assembly; 121. Fixed frame; 122. Sliding groove; 123. Sliding block; 124. Electro-hydraulic push rod; 125. Guide block; 13. Moving seat; 14. Adjusting assembly; 141. Motor; 142. Nut; 143. Lead screw; 15. Drive mechanism; 16. Swinging top assembly; 161. Swinging swashplate; 162. Slide rail; 163. Movable groove; 164. Stop bar; 165. Connecting cylinder; 166. Ball groove; 167. Ball rod; 168. Upright pole; 169. Press head; 17. Support assembly; 171. Ring frame; 172. Support rod; 173. Ball; 18. Pressing assembly; 181. Pressure ring; 182. Telescopic rod; 183. Second spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-10 The present invention provides a technical solution:

[0020] A waterproof performance testing device for leather lining fabric includes a base plate 1, a working frame 2 and a vertical plate 3 fixed on the base plate 1, the vertical plate 3 fixed to one side of the working frame 2, and sliding columns 5 fixedly connected to the front and rear sides of the testing frame 4 respectively. Guide grooves 6 are respectively opened on the front and rear sides of the working frame 2 corresponding to the positions of the two sliding columns 5. The sliding columns 5 slide through the guide grooves 6. The guide grooves 6 are composed of inclined sections and straight sections, and the sliding column 5 currently slides through the lowest end of the inclined section in the guide groove 6.

[0021] The detection frame 4 has pressure grooves 7 at its four corners, and a limit detection component 9 is installed in each pressure groove 7. The detection frame 4 also has grooves 8 at its four corners, and the end of the limit detection component 9 slides through the groove 8. The limit detection component 9 includes a pressure base 901, in which a humidity sensor is installed. The pressure base 901 is designed as an inverted cone and slides in the pressure groove 7. A slide rod 902 is fixed to the extension at the top of the pressure base 901. The slide rod 902 slides through the groove 8, and a first spring 903 is sleeved on the outside of the slide rod 902. The two ends of the first spring 903 are fixed to the bottom end of the slide rod 902 and the top of the inner wall of the groove 8, respectively.

[0022] During operation, when the fabric is positioned, the pressing assembly 10 is released, the first spring 903 returns to its original shape, and pulls the slide rod 902 and the support frame 101 to return to their original position simultaneously. The support frame 101 drives the four pressing seats 901 to move down simultaneously until the top end face of the pressing seat 901 is tightly attached to the four corners of the leather lining fabric edge, thus achieving the four corners of the fabric being fixed. The inverted conical design of the pressing seat 901 can increase the contact area with the fabric, avoiding excessive local pressure that could damage the fabric. Moreover, during the pressing process of the pressing seat 901, the fabric can be recessed into the detection frame 4, so that the fabric can come into contact with the water in the immersion tank 11.

[0023] As a further embodiment of the present invention, a pressing component 10 is fixed to the top of the four limit detection components 9. The pressing component 10 includes a support frame 101. The support frame 101 is provided with clearance grooves 102 at the positions corresponding to the four pressing seats 901. The tops of the four pressing seats 901 are all fixed to the bottom of the support frame 101. Fixing posts 103 are fixed at the four corners of the support frame 101, and a pull rod 104 is fixed between two adjacent fixing posts 103.

[0024] During operation, by lifting the pull rod 104 of the pressing assembly 10, the pull rod 104 drives the two adjacent fixed columns 103 to move upward synchronously. The fixed columns 103 then drive the support frame 101 to move upward as a whole. The support frame 101 pulls the limit detection assembly 9 upward synchronously through the four slide rods 902, so that the pressing seat 901 is separated from the pressing groove 7 of the inner wall of the detection frame 4. At this time, the slide rods 902 slide upward in the groove 8 of the detection frame 4, which makes it easier to lay the leather lining fabric to be tested on the top detection surface of the detection frame 4.

[0025] As a further embodiment of the present invention, a water immersion tank 11 is provided below the detection frame 4. The water immersion tank 11 is installed at the bottom of the inner wall of the work frame 2. A pushing component 12 is fixedly connected to the side of the detection frame 4 near the upright plate 3. The pushing component 12 is installed through the upright plate 3. The pushing component 12 includes a fixing frame 121, which is fixed to one side of the upright plate 3. A groove 122 is provided on one side of the inner wall of the fixing frame 121. A slider 123 is slidably connected in the groove 122. The slider 123 and the groove 122 are both T-shaped. An electric hydraulic push rod 124 is fixedly connected to one side of the slider 123. The other end of the electric hydraulic push rod 124 is fixedly connected to one side of the detection frame 4. A guide block 125 is fixed to the outside of the electric hydraulic push rod 124. The guide block 125 is I-shaped and slides through the groove in the upright plate 3.

[0026] During operation, the electric hydraulic push rod 124 pulls the detection frame 4 towards the immersion tank 11. The sliding columns 5 on the front and rear sides of the detection frame 4 slide in the guide groove 6 of the work frame 2. At this time, the sliding columns 5 move horizontally along the straight section of the guide groove 6. When the sliding column 5 slides to the connection between the straight section and the inclined section of the guide groove 6, it continues to slide downward along the inclined section of the guide groove 6 under the pulling force of the electric hydraulic push rod 124. As the sliding column 5 moves downward, the detection frame 4 gradually tilts and moves downward until the sliding column 5 slides to the lowest end of the inclined section of the guide groove 6, which facilitates immersing the concave part of the fabric into the detection medium in the immersion tank 11 for detection.

[0027] As the detection frame 4 gradually tilts and moves downward, the electro-hydraulic push rod 124 moves downward synchronously with the detection frame 4, and drives the slider 123 to slide down inside the slide groove 122. At the same time, the I-shaped guide block 125 outside the electro-hydraulic push rod 124 slides synchronously in the groove of the vertical plate 3, ensuring that the electro-hydraulic push rod 124 and the detection frame 4 always maintain a horizontal position during the extension and retraction process.

[0028] As a further embodiment of the present invention, an adjustment assembly 14 is installed on the top of the upright plate 3. The adjustment assembly 14 includes a motor 141. The motor 141 is installed on the top of the upright plate 3. The output shaft of the motor 141 is fixedly connected to a lead screw 143. The bottom end of the lead screw 143 is rotatably connected to the bottom of the inner wall of the upright plate 3 through a bushing. The lead screw 143 is externally threaded with a nut 142. One side of the nut 142 is fixed to the movable seat 13.

[0029] When in operation, the motor 141 of the adjustment component 14 is started. The output shaft of the motor 141 drives the lead screw 143 to rotate. The lead screw 143 is threadedly engaged with the nut 142. The nut 142 drives the movable seat 13 to move up and down along the side wall of the vertical plate 3.

[0030] As a further embodiment of the present invention, the movable seat 13 has a C-shaped structure and a drive mechanism 15 is mounted on its top. A swinging top-feeding assembly 16 is fixed to the bottom end of the drive mechanism 15. A support assembly 17 is fixed to the bottom of the movable seat 13 at a position below the swinging top-feeding assembly 16. The swinging top-feeding assembly 16 slides through the support assembly 17. The swinging top-feeding assembly 16 includes a swinging swashplate 161. A swinging seat rotatably connected to the top of the swinging swashplate 161 is fixed to the bottom end of the drive mechanism 15. The drive mechanism 15 is specifically a rotary motor. An opening is formed at the bottom edge of the swinging swashplate 161. There is an annular slide 162, and several baffles 164 are slidably connected inside the slide 162. The cross-sectional shape of the slide 162 is T-shaped. Two corresponding baffles 164 are slidably connected to both sides of the inner wall of the slide 162 to ensure that the baffles 164 will not fall off when moving inside the slide 162. A connecting cylinder 165 is fixed to the bottom of the baffles 164. A ball groove 166 is opened at the bottom end of the connecting cylinder 165 and a ball rod 167 is movably connected inside. A vertical rod 168 is fixedly connected to the bottom end of the ball rod 167. The bottom end of the vertical rod 168 passes through the support assembly 17 and is fixed with a pressure head 169.

[0031] During operation, as the swash plate 161 rotates, the annular slide 162 at its bottom is inclined. The baffle 164 inside the slide 162 slides synchronously within the inclined annular slide 162, following the rotational trajectory of the swash plate 161. The baffle 164 drives the connecting cylinder 165, the ball rod 167, and the upright 168 to move synchronously. The top of the ball rod 167 moves inside the ball groove 166, and the upright 168 slides within the support assembly 17. Combined with the rotational trajectory of the swash plate 161, this drives the multiple pressure heads 169 at the bottom to perform regular up-and-down reciprocating movements, thereby simulating the repeated bending, squeezing, and pressing actions of the fabric in actual use.

[0032] The support assembly 17 includes a ring frame 171, which is fixed to the bottom of the movable seat 13. A support rod 172 is fixed at the center of the top of the ring frame 171, and a ball 173 is fixed at the top of the support rod 172. A movable groove 163 is provided at the center of the bottom of the swaying plate 161, and the ball 173 is movably connected in the movable groove 163. The upright rod 168 slides through the ring frame 171.

[0033] During operation, the drive mechanism 15 drives the swashplate 161 to rotate via the swashplate seat, causing the movable groove 163 at the bottom of the swashplate 161 to rotate outside the ball 173 at the top of the support rod 172 of the support assembly 17. The ball 173 at the top of the support rod 172 provides stable support for the swashplate 161, causing the swashplate 161 to perform a rotating swashplate motion.

[0034] As a further embodiment of the present invention, a pressing component 18 is fixed at the center of the bottom of the support component 17, and the bottom ends of the pressing component 18 and the swinging top component 16 are located directly above the detection frame 4. The pressing component 18 includes a pressing ring 181, which is located between a plurality of pressing heads 169. A telescopic rod 182 is fixedly connected to the middle of the pressing ring 181, and the top end of the telescopic rod 182 is fixed to the bottom of the ring frame 171. A second spring 183 is sleeved on the outside of the telescopic rod 182, and the two ends of the second spring 183 are fixedly connected to the opposite surfaces of the ring frame 171 and the pressing ring 181, respectively.

[0035] During operation, the movable seat 13 moves up and down along the side wall of the upright plate 3 until the pressing assembly 18 and the swinging top assembly 16 descend to be close to the interior of the leather lining fabric. This facilitates the adjustment of the height of the pressing assembly 18 and the swinging top assembly 16 for dynamic simulation. The pressing ring 181 in the pressing assembly 18 fits against the bottom of the fabric, deepening the concave areas and stretching the fabric. Combined with the elastic support of the second spring 183, it provides a buffering force to the pressing ring 181, preventing excessive downward pressure from damaging the fabric. At the same time, the second spring 183 of the pressing assembly 18 can adaptively extend and retract according to the reciprocating force of the pressing head 169, ensuring that the pressing ring 181 is always tightly fitted to the fabric and preventing the fabric from shifting during dynamic movement.

[0036] Working principle of this invention:

[0037] By controlling the operation of the push component 12, the detection frame 4 is moved to the rightmost position, and the pull rod 104 of the pressing component 10 is raised. The pull rod 104 drives the two adjacent fixed columns 103 to move upward synchronously. The fixed columns 103 then drive the support frame 101 to move upward as a whole. The support frame 101 pulls the limiting detection component 9 upward synchronously through the four sliding rods 902, so that the pressure seat 901 is disengaged from the pressure groove 7 on the inner wall of the detection frame 4. At this time, the sliding rods 902 slide upward in the groove 8 of the detection frame 4, and the first spring 903 is stretched and stores elasticity. Then, the leather lining fabric to be tested is laid on the top detection surface of the detection frame 4 to ensure that the fabric covers the entire detection area. After the fabric is laid, the pull rod 104 is released, and the first spring 903 is stretched and stores elasticity. 03. After restoring the deformation, pull the slide bar 902 and the support frame 101 to reset downwards in sync. The support frame 101 drives the four pressure seats 901 to move downwards in sync until the top end face of the pressure seat 901 is tightly attached to the four corners of the leather lining fabric edge, thereby achieving the four corner limit fixation of the fabric. The detection end face of the moisture sensor built into the pressure seat 901 is tightly attached to the bottom of the fabric, which does not damage the fabric and ensures that the signal can be quickly captured when moisture penetrates in the future. At the same time, the inverted conical design of the pressure seat 901 can increase the contact area with the fabric, avoid excessive local pressure that may cause the fabric to break. Moreover, during the process of the pressure seat 901 pressing the fabric, the fabric can be recessed into the detection frame 4, so that the fabric can come into contact with the water in the immersion tank 11.

[0038] The electric hydraulic push rod 124 of the push assembly 12 is activated, pulling the detection frame 4 towards the immersion tank 11. The sliding columns 5 on both sides of the detection frame 4 slide within the guide groove 6 of the work frame 2. At this time, the sliding columns 5 move horizontally along the straight section of the guide groove 6. When the sliding column 5 slides to the connection between the straight section and the inclined section of the guide groove 6, it continues to slide downward along the inclined section of the guide groove 6 under the pulling force of the electric hydraulic push rod 124. As the sliding column 5 moves downward, the detection frame 4 gradually tilts and moves downward until the sliding column 5 slides to the lowest end of the inclined section of the guide groove 6. At this time, the recessed part of the fabric in the detection frame 4 is immersed in the detection medium in the immersion tank 11. At the same time, as the detection frame 4 gradually tilts and moves downward, the electric hydraulic push rod 124 moves downward synchronously with the detection frame 4 and drives the slider 123 to slide down inside the slide groove 122. Meanwhile, the I-shaped guide block 125 outside the electric hydraulic push rod 124 slides synchronously in the groove of the upright plate 3, ensuring that the electric hydraulic push rod 124 and the detection frame 4 always maintain a horizontal position during the extension and retraction process.

[0039] After the fabric is immersed in the test medium, it enters the static waterproof test stage. At this time, the humidity sensor is working throughout the process, monitoring in real time whether there is moisture penetration inside the leather lining fabric. At this time, a single static test is completed.

[0040] During the dynamic waterproof test, the motor 141 of the adjustment component 14 is started. The output shaft of the motor 141 drives the lead screw 143 to rotate. The lead screw 143 is threadedly engaged with the nut 142. The nut 142 drives the moving seat 13 to move up and down along the vertical plate 3 until the pressure ring 181 of the pressure component 18 and the pressure head 169 of the swing top component 16 descend to the inside of the leather lining fabric. At this time, the pressure ring 181 in the pressure component 18 fits against the bottom of the fabric, deepening the concave area of ​​the fabric and achieving the purpose of stretching the fabric. With the elastic support of the second spring 183, a buffer force is given to the pressure ring 181 to prevent the pressure ring 181 from being too high and damaging the fabric.

[0041] Next, the drive mechanism 15 is started. The drive mechanism 15 drives the swashplate 161 to rotate through the swashplate seat, so that the movable groove 163 at the bottom of the swashplate 161 rotates outside the ball 173 at the top of the support rod 172 of the support assembly 17. The ball 173 at the top of the support rod 172 provides stable support for the swashplate 161, so that the swashplate 161 performs a rotating swashplate motion. When the swash plate 161 rotates, its bottom annular slide 162 is inclined. The baffle 164 in the slide 162 slides synchronously within the inclined annular slide 162 along the rotational trajectory of the swash plate 161. The baffle 164 drives the connecting cylinder 165, the ball rod 167, and the upright 168 to move synchronously, and the top of the ball rod 167 moves inside the ball groove 166. The upright 168 slides within the annular frame 171 of the support assembly 17. Combined with the rotational trajectory of the swash plate 161, this drives the multiple pressure heads 169 at the bottom to make regular up-and-down reciprocating movements, thereby simulating the repeated bending, squeezing, and pressing actions of the fabric in actual use, and conforming to the real stress scenario of the fabric. At the same time, the second spring 183 of the pressing assembly 18 can adaptively extend and retract according to the up-and-down reciprocating force of the pressure head 169 to ensure that the pressure ring 181 is always tightly attached to the fabric and prevents the fabric from shifting during dynamic movement.

[0042] During the dynamic working condition simulation, the fabric detection area is partially immersed in the detection medium. The humidity sensor works continuously to monitor whether there is moisture penetration inside the fabric in real time. If the fabric's waterproof performance is insufficient, moisture will quickly penetrate through cracks. After the humidity sensor captures the moisture signal, it immediately converts it into an electrical signal and feeds it back to the control terminal. After the detection work is completed, the motor 141 reverses to drive the lead screw 143 to rotate. The lead screw 143 is threadedly engaged with the nut 142, which drives the moving seat 13 to move upward along the vertical plate 3. This, in turn, drives the swing top material assembly 16 and the pressure assembly 18 to rise synchronously until the pressure head 169 and the pressure ring 181 are completely separated from the top of the leather lining fabric. Then, the electric hydraulic push rod 124 is activated to extend it and drive the detection frame 4 and the detected fabric to move to the right. The sliding columns 5 on the front and rear sides of the detection frame 4 slide in opposite directions synchronously in the guide groove 6 of the work frame 2. At this time, the slide column 5 first slides upward along the inclined section of the guide groove 6. As the slide column 5 moves upward, the detection frame 4, which was originally tilted downward, gradually returns to its original position and tends to be horizontal, thus detaching from the detection medium in the immersion tank 11. When the slide column 5 slides to the connection between the inclined section and the straight section of the guide groove 6, it continues to move horizontally in the opposite direction along the straight section of the guide groove 6 under the thrust of the electric hydraulic push rod 124 until the slide column 5 slides to the initial position of the straight section of the guide groove 6. The detection frame 4 is then completely reset to a horizontal and static state, and the tested leather lining fabric is then removed.

Claims

1. A waterproof performance testing device for leather lining fabric, comprising a base plate (1), characterized in that: A work frame (2) and a vertical plate (3) are fixed on the base plate (1). The vertical plate (3) is fixed on one side of the work frame (2). A detection frame (4) is provided at the lower position inside the work frame (2). Sliding columns (5) are fixedly connected to the front and rear sides of the detection frame (4). Guide grooves (6) are opened on the front and rear sides of the work frame (2) corresponding to the positions of the two sliding columns (5). The sliding columns (5) slide through the guide grooves (6). The guide grooves (6) are composed of inclined sections and straight sections. The sliding column (5) slides through the lowest end of the inclined section in the guide grooves (6). Pressure grooves (7) are opened at the four corners of the inner wall of the detection frame (4). Limit detection components (9) are installed in the pressure grooves (7). Grooves (8) are opened at the four corners of the detection frame (4). The ends of the limit detection components (9) slide through the grooves (8). Pressing components (10) are fixed on the top of the four limit detection components (9). (4) is provided with a water immersion tank (11) installed at the bottom of the inner wall of the work frame (2). The detection frame (4) is fixedly connected to a push component (12) on the side near the upright plate (3). The push component (12) is installed through the upright plate (3). The top of the upright plate (3) is provided with an adjustment component (14). A movable seat (13) is fixedly connected to one side of the adjustment component (14). A drive mechanism (15) is installed on the top of the movable seat (13). A swing top material component (16) is fixed at the bottom of the drive mechanism (15). A support component (17) is fixed at the bottom of the movable seat (13) corresponding to the position below the swing top material component (16). The swing top material component (16) slides through the support component (17). A pressing component (18) is fixed at the center of the bottom of the support component (17). The bottom of the pressing component (18) and the swing top material component (16) are located directly above the detection frame (4).

2. The waterproof performance testing device for leather lining fabric according to claim 1, characterized in that: The limiting detection component (9) includes a pressure seat (901), in which a humidity sensor is provided. The pressure seat (901) is designed as an inverted cone and slides in the pressure groove (7). A slide rod (902) is fixed to the extension at the top of the pressure seat (901). The slide rod (902) slides through the groove (8), and a first spring (903) is sleeved on the outside of the slide rod (902). The two ends of the first spring (903) are respectively fixed to the bottom end of the slide rod (902) and the top of the inner wall of the groove (8).

3. The waterproof performance testing device for leather lining fabric according to claim 1, characterized in that: The pressing assembly (10) includes a support frame (101). The support frame (101) has clearance grooves (102) respectively at the positions of the four pressing seats (901). The tops of the four pressing seats (901) are fixed to the bottom of the support frame (101). Fixed posts (103) are fixed at the four corners of the support frame (101), and tie rods (104) are fixed between two adjacent fixed posts (103).

4. The waterproof performance testing device for leather lining fabric according to claim 1, characterized in that: The pushing component (12) includes a fixing frame (121), which is fixed to one side of the upright plate (3). A groove (122) is provided on one side of the inner wall of the fixing frame (121). A slider (123) is slidably connected in the groove (122). The cross-sectional shape of the slider (123) and the groove (122) is T-shaped. An electric hydraulic push rod (124) is fixedly connected to one side of the slider (123). The other end of the electric hydraulic push rod (124) is fixedly connected to one side of the detection frame (4). A guide block (125) is fixed to the outside of the electric hydraulic push rod (124). The guide block (125) is I-shaped and slides through the groove in the upright plate (3).

5. The waterproof performance testing device for leather lining fabric according to claim 1, characterized in that: The adjustment assembly (14) includes a motor (141), which is mounted on the top of the upright plate (3). The output shaft of the motor (141) is fixedly connected to a lead screw (143). The bottom end of the lead screw (143) is rotatably connected to the bottom of the inner wall of the upright plate (3) through a bushing. The lead screw (143) is externally threaded with a nut (142), and one side of the nut (142) is fixed to the moving seat (13).

6. The waterproof performance testing device for leather lining fabric according to claim 1, characterized in that: The swing top material assembly (16) includes a swing swashplate (161), the top of which is rotatably connected to a swing seat and fixed to the bottom of the drive mechanism (15). An annular slide (162) is provided at the bottom edge of the swing swashplate (161). Several baffles (164) are slidably connected in the slide (162). A connecting cylinder (165) is fixed at the bottom of the baffle (164). A ball groove (166) is provided at the bottom of the connecting cylinder (165) and a ball rod (167) is movably connected inside. A vertical rod (168) is fixedly connected at the bottom of the ball rod (167). The bottom of the vertical rod (168) passes through the support assembly (17) and is fixed with a pressure head (169). A movable groove (163) is provided at the center of the bottom of the swing swashplate (161).

7. The waterproof performance testing device for leather lining fabric according to claim 6, characterized in that: The support assembly (17) includes a ring frame (171), which is fixed to the bottom of the movable seat (13). A support rod (172) is fixed at the center of the top of the ring frame (171), and a ball (173) is fixed at the top of the support rod (172). The ball (173) is movably connected in the movable groove (163), and the upright (168) slides through the ring frame (171).

8. The waterproof performance testing device for leather lining fabric according to claim 7, characterized in that: The pressing assembly (18) includes a pressing ring (181) located between several pressing heads (169). A telescopic rod (182) is fixedly connected to the middle of the pressing ring (181). The top end of the telescopic rod (182) is fixed to the bottom of the ring frame (171). A second spring (183) is sleeved on the outside of the telescopic rod (182). The two ends of the second spring (183) are fixedly connected to the opposite surfaces of the ring frame (171) and the pressing ring (181), respectively.

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