A kind of evaluation device for sofa fabric waterproof and oil stain resistance

Abstract

The utility model discloses a kind of for sofa fabric waterproof and oil stain's evaluation device, clear water tank and edible oil liquid tank are arranged in environmental simulation cabin in the device, accurate liquid supply system is constituted by infusion tube and injection tube, adopt servo motor driving rack and pinion mechanism to push piston and realize quantitative instillation.Fabric is fixed on bottom plate by clamp, humidity sensor inbed in bottom plate and fabric back abut, real-time monitoring liquid penetration, measure weight change caused by fabric liquid absorption by weighing sensor.Environmental simulation component includes heating pipe, semiconductor refrigerating sheet, ultrasonic humidifier and dehumidification fan, provide controllable test environment under the adjustment of PLC controller.Collection tank is used to collect surface liquid waste.The device realizes the automation and standardization of fabric protective performance test, obtains key parameters such as penetration speed and liquid absorption amount by multidimensional detection, significantly improves test precision, efficiency and result comparability.

Description

Technical Field

[0001] This utility model relates to the field of fabric performance testing technology, and in particular to a testing device for waterproof and oil-resistant sofa fabrics. Background Technology

[0002] As people's living standards continue to improve, their demands for the functionality and quality of furniture, especially sofas, are increasing. The waterproof and oil-resistant properties of sofa fabrics have become a crucial factor for consumers when making purchases. In modern home environments, sofas frequently face the risk of various liquid contaminations, such as spilled beverages and food stains. Therefore, fabrics with good protective properties can significantly extend the lifespan of sofas and reduce cleaning and maintenance costs. Currently, sofa fabric protection technologies on the market mainly include surface coating treatments, fiber modification, and fabric structure optimization. The effectiveness of these technologies needs to be verified through scientific and accurate testing methods to guide product development and quality control.

[0003] Existing methods for testing the waterproof and oil-repellent properties of fabrics primarily rely on traditional manual methods. Testers use droppers or other simple tools to apply test liquids to the fabric surface, then assess penetration through visual observation and simple time recording. This method has several limitations: First, consistency in the amount and location of liquid applied is difficult to guarantee, and the arbitrariness of manual operation leads to poor reproducibility and comparability of test results. Second, the influence of environmental conditions on test results is not effectively controlled; different temperature and humidity conditions significantly affect the protective performance of fabrics, and existing testing methods often overlook this important factor. Third, the detection methods are relatively simplistic, relying mainly on visual observation to judge penetration, lacking quantitative data support, and unable to accurately measure key performance parameters such as penetration rate and absorption volume.

[0004] To address the aforementioned technical challenges, there is an urgent need to develop a highly automated, accurate, and comprehensive testing device for evaluating the waterproof and oil-resistant properties of sofa fabrics. This device should be capable of precise quantitative liquid dispensing, provide controllable testing conditions, be equipped with a multi-dimensional detection system, and, through automated control and data acquisition and analysis, provide objective and accurate test results for assessing the protective performance of the fabrics. This will not only help fabric manufacturers improve product quality and R&D efficiency but also provide consumers with a scientific basis for selecting sofas with reliable protective performance, thus playing a significant role in promoting technological progress and product upgrades throughout the furniture industry. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a testing device for waterproofing and oil-resistant properties of sofa fabrics.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A testing device for waterproofing and oil-resistant properties of sofa fabric includes an environmental simulation chamber. The chamber contains a water tank and an edible oil tank. Both the water tank and the edible oil tank have infusion tubes at their bottoms, and injection tubes are horizontally positioned at the bottom of each infusion tube. A piston is slidably inserted inside each injection tube. A drive assembly for sliding the piston is located at the end of each injection tube. A base plate is vertically positioned on one side of the output end of each injection tube. Clips are located at the four corners of the base plate's sidewall, securing the same fabric to each clip. Two humidity sensors are embedded inside the base plate, with their sensing ends contacting the back of the fabric. The environmental simulation chamber also contains an environmental simulation component.

[0007] The above technical solution integrates a liquid supply system, a precise dripping mechanism, and a multi-dimensional detection system, enabling standardized and automated testing of the fabric's waterproof and oil-resistant properties, significantly improving the consistency and reproducibility of test results.

[0008] Preferably, the drive assembly includes push rods that are slidably inserted into the center of the end of the injection tube. Each push rod is coaxially connected to a piston at its adjacent end. Each push rod has a rack at the end away from the piston, and the rack meshes with the same gear.

[0009] The above technical solution employs a push rod-rack-gear transmission mechanism to precisely convert rotary motion into linear motion, achieving precise control over the piston's movement distance and speed, thereby ensuring high precision and repeatability of liquid dripping volume.

[0010] Preferably, a bracket is provided at the end of the base plate away from the fabric, a weighing sensor is provided at the bottom of the bracket, and a mounting base is fitted around the weighing sensor.

[0011] The above technical solution provides a quantitative measurement method for the amount of liquid absorbed by the fabric by using a weighing sensor to monitor the weight change caused by the absorption of liquid in the fabric in real time, thus providing accurate data support for the evaluation of the liquid absorption performance of the fabric.

[0012] Furthermore, a collection box is provided below the base plate.

[0013] The above technical solution involves setting up a collection box to collect liquid waste dripping from the fabric surface, which not only keeps the testing environment clean and tidy, but also facilitates the observation and evaluation of the liquid repellency effect on the fabric surface.

[0014] Furthermore, all infusion tubing is equipped with a one-way valve.

[0015] The above technical solution involves installing a one-way valve on the infusion tube, which effectively prevents liquid backflow and cross-contamination, ensuring the stability of the liquid supply system and the purity of the test liquid.

[0016] Preferably, the environmental simulation components include a heating element, a semiconductor cooling chip, an ultrasonic humidifier, and a dehumidifying fan located inside the environmental simulation chamber. The environmental simulation chamber is also equipped with a temperature and humidity sensor and a PLC controller.

[0017] The above technical solutions, through a complete environmental control system and PLC automation control, achieve precise adjustment of temperature and humidity in the testing environment and fully automated control of the entire process, thereby improving the standardization and ease of operation of the test.

[0018] Preferably, the gear is coaxially connected to a servo motor.

[0019] The above technical solution, employing a servo motor-driven gear system, achieves high-precision position control and speed adjustment, further enhancing the accuracy and controllability of the liquid dripping process.

[0020] The beneficial effects of this utility model are as follows: First, it achieves a high degree of automation and precise control in fabric protective performance testing. This invention utilizes a servo motor-driven rack and pinion transmission system, combined with precise adjustment by a PLC controller, to achieve high-precision control of the test liquid dripping volume, dripping speed, and dripping position, completely eliminating the arbitrariness and inconsistency inherent in traditional manual dripping methods. Simultaneously, the environmental simulation component can precisely control the temperature and humidity conditions of the testing environment, providing a stable and controllable external environment for fabric performance testing, significantly improving the reproducibility and accuracy of the test results.

[0021] Secondly, a multi-dimensional comprehensive testing system has been established to achieve a comprehensive quantitative assessment of the fabric's protective performance. The device is equipped with a dual detection system consisting of a humidity sensor and a weighing sensor, enabling simultaneous monitoring of the liquid penetration rate and the fabric's absorbency. It quantitatively assesses penetration performance by recording the time from the start of dripping to a specific increase in humidity on the back side, and accurately calculates absorbency by measuring weight changes using the weighing sensor. This provides multiple key parameters for the fabric's waterproof and oil-resistant properties, offering scientific data support for product quality control and performance improvement.

[0022] Third, a standardized testing process was established, improving testing efficiency and the comparability of results. Through fixed fabric clamping methods, standardized dripping procedures, and automated data acquisition and analysis, the consistency and comparability of test results across different batches and by different operators were ensured. The entire testing process requires no manual intervention, significantly improving testing efficiency, reducing labor costs, and avoiding the influence of human factors on test results. This provides fabric manufacturers with an efficient and reliable technical means for quality inspection and new product development.

[0023] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the internal structure of a testing device for waterproof and oil-resistant sofa fabrics proposed in this utility model. Figure 2 This is a schematic diagram of the drive component structure of a testing device for waterproof and oil-resistant sofa fabrics proposed in this utility model. Figure 3 This is a schematic diagram of the fabric fixing structure of a testing device for waterproof and oil-resistant sofa fabrics proposed in this utility model. Figure 4 This is a schematic diagram of the sensor assembly installation structure of a testing device for waterproof and oil-resistant sofa fabrics proposed in this utility model.

[0025] In the diagram: 1. Environmental simulation chamber; 2. Clean water tank; 3. Edible oil tank; 4. Infusion tube; 5. One-way valve; 6. Injection tube; 7. Piston; 8. Push rod; 9. Rack; 10. Gear; 11. Servo motor; 12. Base plate; 13. Fabric; 14. Clip; 15. Collection box; 16. Bracket; 17. Weighing sensor; 18. Mounting base; 19. Humidity sensor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1, referring to Figures 1 to 4 This invention provides a testing device for waterproofing and oil-repellent properties of sofa fabrics. An environmental simulation chamber 1 constructs a controllable testing environment to achieve standardized testing of fabric samples. The environmental simulation chamber 1 is equipped with a complete liquid supply and testing system. A clean water tank 2 and an edible oil tank 3 store test water and edible oil, respectively. Both tanks are connected to infusion pipes 4 at their bottoms. One-way valves 5 are installed on the infusion pipes 4 to prevent backflow and ensure the stability and accuracy of the system's liquid supply. An injection tube 6 is connected to the end of the infusion pipe 4. A piston 7 is slidably inserted inside the injection tube 6. A drive assembly controls the precise movement of the piston 7 to achieve quantitative liquid output.

[0028] The drive assembly employs a high-precision mechanical transmission structure, including a push rod 8 slidably inserted at the center of the end of the injection tube 6. The push rod 8 is coaxially connected to the piston 7 at the adjacent end, ensuring effective transmission of thrust. A rack 9 is located at the end of the push rod 8 furthest from the piston 7. The rack 9 meshes with the same gear 10, which is coaxially connected to a servo motor 11, forming a precise transmission chain from the motor's rotational motion to the piston's linear motion. Under the precise control of the PLC controller, the servo motor 11, through the meshing transmission of the gear 10 and rack 9, pushes the push rod 8, causing the piston 7 to move within the injection tube 6, achieving precise quantitative dripping of water and edible oil. The drip volume and drip rate can be precisely adjusted according to testing requirements.

[0029] The fabric fixing and detection system is the core of the entire device. A base plate 12 is vertically mounted on one side of the output end of the injection tube 6. Clips 14 are provided at the four corners of the side wall of the base plate 12. The fabric 13 to be tested is firmly fixed above the base plate 12 by the clips 14, ensuring that the fabric 13 maintains a flat and stable tension state during the test. Two humidity sensors 19 are embedded inside the base plate 12. The sensing end of the humidity sensor 19 is in close contact with the back of the fabric 13 to monitor the changes in humidity on the back of the fabric in real time. When liquid is dripped from the front of the fabric 13, if the liquid penetrates through the fabric 13, the humidity sensor 19 can sensitively detect the increase in humidity on the back. By recording the time from the start of dripping to the increase in humidity on the back by a specific amount, the penetration rate of the liquid through the fabric 13 can be accurately determined, thereby evaluating the anti-permeability performance of the fabric 13.

[0030] The weighing detection system is implemented through a bracket 16 located at the end of the base plate 12 furthest from the fabric 13. A weighing sensor 17 is installed at the bottom of the bracket 16, and a mounting base 18 is fitted around the weighing sensor 17 to provide a stable mounting foundation. The entire fabric fixing device, including the base plate 12, clips 14, fixed fabric 13, and bracket 16, is monitored for weight by the weighing sensor 17. When liquid drips onto the fabric 13 and is absorbed, the weight of the entire test assembly increases accordingly. The weighing sensor 17 can accurately measure this weight change, and by calculating the weight increment, the amount of test liquid absorbed by the fabric 13 can be accurately determined, providing quantitative data for evaluating the liquid absorption performance of the fabric 13. A collection box 15 is installed below the base plate 12 to collect liquid waste dripping from the surface of the fabric 13. This liquid is the portion that has not been absorbed by the fabric 13 and has flowed down from the surface. The collection box 15 maintains the cleanliness of the test environment and facilitates observation of the liquid repellency effect on the surface of the fabric 13.

[0031] The environmental simulation component provides stable and controllable external conditions for the entire test. This includes heating elements, a semiconductor cooling chip, an ultrasonic humidifier, and a dehumidifying fan located inside the environmental simulation chamber 1. Under the coordinated control of the PLC controller, these devices can precisely adjust the temperature and humidity within the chamber 1 to simulate different usage environment conditions. The environmental simulation chamber 1 is also equipped with temperature and humidity sensors to monitor environmental parameters in real time, providing feedback signals to the PLC controller to ensure the stability and consistency of the test environment. Through the environmental simulation component, fabric 13 can be tested under different temperature and humidity conditions, comprehensively evaluating its waterproof and oil-repellent performance in various environments.

[0032] The entire testing process is carried out automatically under the unified scheduling of the PLC controller. The PLC controller controls the operation of the servo motor 11 according to the preset test program to achieve precise liquid dripping. At the same time, it collects data from the humidity sensor 19, the weighing sensor 17, and the ambient temperature and humidity sensor in real time. Through data analysis, the penetration time, liquid absorption, and performance changes of the fabric 13 under different environmental conditions can be obtained, providing a comprehensive and objective evaluation result for the waterproof and oil-resistant performance of the fabric 13.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A testing device for waterproofing and oil-repellent properties of sofa fabrics, comprising an environmental simulation chamber (1), characterized in that, The environmental simulation chamber (1) is equipped with a clean water tank (2) and an edible oil tank (3). The bottom of the edible oil tank (3) and the clean water tank (2) are equipped with infusion tubes (4). The bottom of the infusion tubes (4) is equipped with injection tubes (6) horizontally. The injection tubes (6) are equipped with pistons (7) slidably inserted inside. The ends of the injection tubes (6) are equipped with the same driving component for driving the pistons (7) to slide. The output end of the injection tubes (6) is equipped with a base plate (12) vertically on one side. The four corners of the side wall of the base plate (12) are equipped with clips (14). The clips (14) are fixed with the same fabric (13). The base plate (12) is equipped with two humidity sensors (19). The sensing end of the humidity sensor (19) abuts against the back of the fabric (13). The environmental simulation chamber (1) is also equipped with an environmental simulation component.

2. The testing device for waterproof and oil-resistant sofa fabrics according to claim 1, characterized in that, The drive assembly includes push rods (8) that are slidably inserted into the center of the end of the injection tube (6). Each push rod (8) is coaxially connected to a piston (7) at one of its adjacent ends. Each push rod (8) is provided with a rack (9) at the end away from the piston (7). The rack (9) is meshed with the same gear (10).

3. The testing device for waterproof and oil-resistant sofa fabrics according to claim 2, characterized in that, The base plate (12) is provided with a bracket (16) at the end away from the fabric (13), and a weighing sensor (17) is provided at the bottom of the bracket (16). The weighing sensor (17) is fitted with an installation base (18).

4. The testing device for waterproof and oil-resistant sofa fabrics according to claim 3, characterized in that, A collection box (15) is provided below the base plate (12).

5. The testing device for waterproof and oil-resistant sofa fabrics according to claim 4, characterized in that, Each of the infusion tubes (4) is equipped with a one-way valve (5).

6. The testing device for waterproof and oil-resistant sofa fabrics according to claim 5, characterized in that, The environmental simulation components include a heating tube, a semiconductor cooling chip, an ultrasonic humidifier, and a dehumidifying fan installed inside the environmental simulation chamber (1). The environmental simulation chamber (1) is also equipped with a temperature and humidity sensor and a PLC controller.

7. The testing device for waterproof and oil-resistant sofa fabrics according to claim 6, characterized in that, The gear (10) is coaxially connected to a servo motor (11).

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