A device and method for testing the oil repellency of a textile

Abstract

A device and method for testing the oil repellency of textiles, belonging to the field of textile testing technology, includes a testing cabinet, a transparent sample stage, a lifting mechanism, a dripping mechanism, and a testing system. The lifting mechanism is equipped with a synchronous screw drive structure to ensure smooth lifting and lowering of the oil sample stage. The dripping mechanism includes multiple independent oil pumps, drip nozzles, and photoelectric sensors, enabling synchronous dripping in groups and real-time detection of droplet signals. The testing system is equipped with an inclined upper camera and a vertical lower camera to achieve double-sided imaging, and an external control console with an integrated main control processor, featuring dual touch-screen interfaces for testing and calibration. This invention supports continuous or skipped dripping. After dripping, the oil pumps depressurize in reverse, the mechanism returns to its original position and remains stationary for 30 seconds before double-sided imaging, automatic rating, and sequential cyclic testing of all groups, ultimately generating a test report. This invention overcomes the shortcomings of traditional equipment, such as single-channel dripping, single-sided detection, and low efficiency, achieving fully automated testing, comprehensive and repeatable test data, and is suitable for batch testing of the oil repellency of textiles.

Description

Technical Field

[0001] This invention belongs to the field of textile performance testing technology, specifically a device and method for testing the oil repellency of textiles. Background Technology

[0002] According to the national standard GB / T 19977-2014 "Textiles - Oil Repellency and Hydrocarbon Resistance Tests", when testing the oil repellency of textiles, a fixed amount of oil is dropped onto the textile using a dropper, and then the degree of wetting and wicking is determined by observation and measurement. The standard specifies that different grades of reagents need to be added sequentially to a single sample. After completing the observation and recording, multiple samples need to be used to repeat the operation to ensure the accuracy of the test results, which is time-consuming and labor-intensive.

[0003] Existing textile oil repellency testing equipment has a relatively simple structural design, mostly featuring only a single droplet structure and a single-sided imaging detection structure. This makes it difficult to perform multi-channel simultaneous droplet testing and to comprehensively collect and detect the oil droplet wetting state on both sides of the textile. It can only perform single-group, one-by-one droplet testing, resulting in low testing efficiency and limited data dimensions. This makes it difficult to meet the needs of batch, high-precision, and multi-dimensional testing of textile oil repellency, and the accuracy and comprehensiveness of the test results are significantly limited, requiring further improvement. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a testing device for the oil repellency of textiles.

[0005] The present invention adopts the following technical solution: A testing device for the oil repellency of textiles includes a testing cabinet, a transparent sample stage, a lifting mechanism, a dripping mechanism, and a testing system. A transparent sample stage is horizontally set inside the test cabinet for placing the sample to be tested. The lifting mechanism is arranged vertically on both sides of the transparent sample stage; The oil-drip mechanism is located above the transparent sample stage and is driven to move up and down by a lifting mechanism. It includes an oil sample stage, drip nozzles, oil sample bottles, an oil pump, and a photoelectric sensor. The oil sample stage is horizontally arranged and movably mounted on the lifting mechanism. There are several drip nozzles, facing downwards, mounted on the oil sample stage. There are several oil sample bottles, located on both sides of the drip nozzles on the oil sample stage. The oil pump is mounted on the oil sample stage in a one-to-one correspondence with the drip nozzles and connects the drip nozzles to the oil sample bottles. The photoelectric sensor is mounted on the bottom of the oil sample stage in a one-to-one correspondence with the drip nozzles and faces the drip nozzle outlets. The detection system includes a first vision module, a second vision module, and a control console. The first vision module is located above the transparent sample stage, mounted on the inner wall of the test cabinet, and tilted towards the top surface of the transparent sample stage. The second vision module is located at the bottom of the test cabinet and faces the bottom surface of the transparent sample stage. The control console is located on the outer side of the test cabinet and is electrically connected to the lifting mechanism, oil pump, photoelectric sensor, first vision module, and second vision module.

[0006] Preferably, the lifting mechanism includes a support frame, guide columns, lead screws, nuts, and a drive motor. The support frame is disposed in the test cabinet and located on both sides of the transparent sample stage. The guide columns and lead screws are vertically arranged on the support frame. The nuts are fitted onto the lead screws, and the guide columns and lead screws of the oil sample stage pass through and are connected to the nuts, allowing the guide columns and lead screws to move up and down along the lead screws with the nuts. The drive motor is connected to the control console, and the bottom of the support frame is connected to the lead screws and drives them to rotate.

[0007] Preferably, the drive motor is connected to one of the two lead screws, and the lifting mechanism further includes a synchronous pulley and a synchronous belt. The synchronous pulleys are respectively disposed on the top of the two support frames and connected to the lead screws and rotate with them; the synchronous belt is sleeved on the two synchronous pulleys.

[0008] Preferably, the first vision module includes a first mounting bracket, an inclined plate, a first mounting groove, and a first camera. The mounting bracket is fixedly disposed in the test cabinet; the inclined plate is arranged inclined downward and connected to the mounting bracket; the mounting groove is formed in the inclined plate along the inclined direction; the first camera is assembled in the mounting groove and faces the transparent sample stage.

[0009] Preferably, the second vision module includes a second mounting bracket, a second mounting slot, and a second camera. The second mounting bracket is disposed at the bottom of the test cabinet; the second mounting slot is formed vertically in the second mounting bracket; and the second camera is assembled in the second mounting slot and faces the transparent sample stage.

[0010] Preferably, the control console integrates a main control processor, which is electrically connected to the lifting mechanism, oil pump, photoelectric sensor, first vision module, and second vision module. The main control processor is configured to: receive the droplet detection signal from the photoelectric sensor; control the start and stop of the oil pump and its forward and reverse operation; control the lifting mechanism to move up and down; trigger the first vision module and second vision module to complete image acquisition; and automatically control the oil droplet rating and testing process of the acquired images.

[0011] Preferably, the console is equipped with a touch display terminal, which has a built-in test page and a parameter calibration page. The test page is used to perform automatic circulating dripping tests, display the equipment operating status in real time, and generate test reports. The parameter calibration page is used to individually debug the lifting mechanism, oil pump, first vision module, second vision module, and read real-time signals from photoelectric sensors.

[0012] Preferably, the oil drip nozzles are arranged equidistantly along the longitudinal direction and divided into several groups, with each group of oil drip nozzles arranged equidistantly in the transverse direction. The oil sample bottle is connected to each group of oil drip nozzles in a one-to-one correspondence and holds different oils.

[0013] A method for testing the oil repellency of textiles, based on the aforementioned apparatus for testing the oil repellency of textiles. S1. Sample clamping: Lay the textile sample to be tested flat on the transparent sample stage inside the test cabinet; S2. Grouping Configuration: Select the first round of drip nozzle group through the console. The console will determine the order of subsequent test groups based on the selected first round of drip nozzle group. S3, Lowering the dripping liquid: The control console controls the lifting mechanism to drive the oil sample stage from the initial position to the preset dripping working position. After a 1-second delay in reaching the position, the oil pump corresponding to the selected dripping nozzle group is started. The oil pump draws oil from the oil sample bottle and drips the oil droplets onto the surface of the textile sample to be tested through the corresponding dripping nozzle. S4. Drip Control: Each photoelectric sensor detects the drip signal of the corresponding oil nozzle in real time. After a single photoelectric sensor detects the drip signal, the control console immediately controls the corresponding oil pump to run in reverse for 1-2 seconds to eliminate residual drip pressure. Once all photoelectric sensors corresponding to the oil pumps that are turned on in this round have detected the drip signal, the drip operation in this round is considered complete. S5. Reset Imaging: After this round of droplet application is completed, the console controls the lifting mechanism to move the oil sample stage back to the initial position for standby. After the reset is completed, it is left to stand for 30 seconds. After the delay, the console simultaneously triggers the first vision module and the second vision module to acquire oil droplet imaging images from the upper and lower sides of the sample and transmit them back to the console. S6. Intelligent rating: The control console analyzes the collected oil droplet images and evaluates the oil droplet wetting status of the textile according to the preset oil repellency rating standard. Based on the rating result, it determines whether to continue to start the next oil dripping nozzle group for dripping test. Steps S3-S5 are executed in a loop until all oil dripping nozzle groups have completed the dripping test. S7. Data Archiving and Output: After the entire testing process is completed, the console integrates all equipment operation data, image data, and oil droplet rating data, automatically generates a textile oil repellency performance test report, and completes storage and output. Preferably, the console configuration supports simultaneous dripping of multiple groups of drip nozzles or independent dripping of a single group. After the first round of testing is completed and the return imaging rating is completed, the system automatically starts from the next group after the last group of the first round and sequentially completes the cyclic testing of all subsequent groups.

[0014] As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are as follows: by setting a transparent sample stage to stably support the sample, and cooperating with the lifting mechanism to precisely control the height of the dripping station, it is suitable for national standard multi-reagent and multi-repetition test conditions; by adopting multiple sets of independently matched oil sample bottles, oil pumps, dripping nozzles and photoelectric sensor structures, it can realize multi-channel synchronous and precise dripping and real-time monitoring of dripping status, replacing the traditional single-set dripping mode, and greatly improving test efficiency; the tilted first vision module simulates manual observation of oil droplet status at a 45° angle and records images, and the second vision module collects images of the penetration status of the sample bottom surface, and collects images of oil droplet wetting and wicking status on both sides of the textile from all directions, improving the accuracy of observation results while eliminating the dependence on manual observation and recording, effectively improving test accuracy, comprehensiveness and detection efficiency; An electrically controlled lifting structure with guide columns and lead screw nuts is adopted to ensure stable and precise displacement of the dripping mechanism, guaranteeing a consistent dripping height and improving test repeatability. The synchronous transmission of the two lead screws is achieved by using a synchronous pulley and a synchronous belt, ensuring that the oil sample stage is raised and lowered horizontally without deviation, and avoiding the deviation of the drip position due to the tilt of the mechanism; The tilted first camera replaces manual 45° observation of the sample, accurately capturing the surface oil repellency phenomenon and improving the integrity of surface detection data; The second camera can vertically collect images of oil penetration and wicking on the bottom surface of the sample, accurately identify the hidden penetration phenomenon at the bottom of the sample, and combine them with images captured by the first camera to further improve the accuracy of the test results and make up for the shortcomings of traditional single-sided detection. The integrated main control processor enables fully automated closed-loop control of the entire process of droplet application, sensor detection, station switching, dual-camera imaging, and oil droplet rating, replacing the traditional manual operation, observation, and recording method, greatly reducing the workload of manual labor and solving the problem of time-consuming and labor-intensive traditional testing. The equipment is equipped with a dual-function touch screen, which supports both batch standardized automatic testing and individual calibration and debugging of each component, balancing testing standardization and equipment maintenance convenience, and ensuring stable long-term test accuracy. The oil drip nozzles are grouped and matched with independent oil sample bottles, which can be adapted to the simultaneous / group dripping test of different reagents. There is no need to frequently change reagents, which greatly adapts to the national standard multi-reagent test conditions and improves test adaptability and efficiency. This testing method, through a standardized automated testing process, achieves precise dropleting, pressure relief, delayed settling, double-sided imaging acquisition, and intelligent rating cycle operation, effectively avoiding human observation errors and significantly improving the consistency, stability, and intelligence of test results. The equipment supports continuous multi-group synchronous dripping, skip-group start testing, and automatic sequential cyclic testing modes. It can flexibly select different reagents to conduct oil repellency tests on textiles, meeting the testing needs of different experiments. The test group configuration is flexible and can automatically complete the full-group sequential cyclic testing without the need for manual switching of each group, greatly improving the equipment's automated testing capabilities and testing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 The internal structure of the present invention Figure 1 ; Figure 3 The internal structure of the present invention Figure 2 ; Figure 4 for Figure 3 A magnified view of a portion of the image; Figure 5 This is a flowchart of the process of the present invention; Figure 6 This is a detailed flowchart of S4 in the workflow diagram of this invention; In the diagram: 1-Test cabinet; 2-Transparent sample stage; 3-Lifting mechanism; 31-Support frame; 32-Guide column; 33-Screw rod; 34-Nut; 35-Drive motor; 36-Synchronous pulley; 37-Synchronous belt; 4-Drip mechanism; 41-Oil sample stage; 42-Oil drip nozzle; 43-Oil sample bottle; 44-Oil pump; 45-Photoelectric sensor; 5-Detection system; 51-First vision module; 511-First mounting bracket; 512-Inclined plate; 513-First mounting slot; 514-First camera; 52-Second vision module; 521-Second mounting bracket; 522-Second mounting slot; 523-Second camera; 53-Control console; 531-Touch display terminal. Detailed Implementation

[0016] The present invention will be further described below through specific embodiments.

[0017] Reference Figures 1 to 6 As shown, a textile oil repellency testing device includes a testing cabinet 1, a transparent sample stage 2, a lifting mechanism 3, a dripping mechanism 4, and a testing system 5.

[0018] Test cabinet 1 serves as the supporting base for the entire unit, integrating and installing various functional structures to provide a closed and stable testing environment, preventing external airflow, dust, and light from interfering with the test results. Specifically, it is a temperature and humidity control chamber commonly used in the prior art to provide a stable testing environment for the internal space. Since this is not the focus of this invention, its structure and selection will not be further elaborated here.

[0019] The transparent sample stage 2 is horizontally fixed inside the test cabinet 1 and is used to stably place and support the textile samples to be tested. The transparent sample stage 2 is made of transparent acrylic sheet. The transparent material can meet the bottom imaging and lighting requirements without obstruction or imaging interference.

[0020] The lifting mechanism 3 is vertically arranged on the left and right sides of the transparent sample stage 2 to provide a stable lifting drive stroke for the upper dripping mechanism 4, realizing automated switching and precise positioning of the dripping station height. The lifting mechanism 3 includes a support frame 31, guide column 32, lead screw 33, nut 34 and drive motor 35. The support frame 31 is fixedly assembled inside the test cabinet 1 and located on both sides of the transparent sample stage 2, serving as the load-bearing base of the lifting structure. The guide column 32 and lead screw 33 are both fixed vertically on the support frame 31 to ensure the verticality of the lifting movement. The nut 34 is threadedly fitted onto the outside of the lead screw 33. The oil sample stage 41 is correspondingly fitted with the guide column 32 and lead screw 33 and fixedly connected to the nut 34, so that the oil sample stage 41 can move vertically along the lead screw 33 with the nut 34. The drive motor 35 is installed at the bottom of the support frame 31 and is connected to the lead screw 33 for transmission, used to drive the lead screw 33 to rotate forward and backward to realize the lifting action.

[0021] Specifically, the lifting mechanism 3 also includes synchronous pulleys 36 and synchronous belts 37. The two sets of synchronous pulleys 36 are respectively installed on the top of the lead screws 33 of the support frames on both sides and rotate synchronously with the lead screws 33. The synchronous belt 37 is sleeved on the outside of the two synchronous pulleys 36 to realize the synchronous linkage rotation of the two lead screws 33 on the left and right sides, ensuring that the lifting stroke and lifting speed on both sides are completely consistent, effectively avoiding the tilting, offset, and jamming of the oil sample stage 41, and ensuring the accuracy of the dripping operation position.

[0022] The dripping mechanism 4 is suspended directly above the transparent sample stage 2 and is driven by the lifting mechanisms 3 on both sides to move up and down. The dripping mechanism 4 specifically includes an oil sample stage 41, a dripping nozzle 42, an oil sample bottle 43, an oil pump 44, and a photoelectric sensor 45. The oil sample platform 41 is a horizontally arranged support plate that can move as a whole with the lifting mechanism 3. There are 40 oil drip nozzles 42, which are fixedly installed downwards on the oil sample platform 41 for precise dripping of test oil. The oil sample bottles 43 are arranged on both sides of the oil drip nozzles 42 to store the oil medium required for testing. The oil pump 44 is installed on the oil sample platform 41 in a one-to-one correspondence with the oil drip nozzles 42. The two ends of the oil pump 44 are connected to the oil sample bottles 43 and the oil drip nozzles 42 respectively to realize the oil extraction, transportation and dripping operation. The photoelectric sensor 45 is installed at the bottom of the oil sample platform 41 in a one-to-one correspondence with the oil drip nozzles 42. The photoelectric sensor 45 is a U-shaped groove photoelectric switch. The U-shaped groove is directly opposite the outlet position of the oil drip nozzle 42. It can detect the dripping signal of each oil drip nozzle 42 in real time and independently to realize precise monitoring of the dripping status of a single channel.

[0023] Furthermore, the 40 oil nozzles 42 are arranged longitudinally at equal intervals and divided into 8 independent test groups. Within the same group, 5 oil nozzles 42 are evenly distributed laterally at equal intervals to ensure that the dripping position of each group is uniform and regular. Each group is independently matched with a corresponding oil sample bottle 43. Different oil sample bottles 43 can independently store test oils of different grades and types, realizing independent dripping test of groups and multi-type oil compatibility test.

[0024] The detection system 5 is integrated into the test cabinet 1 and includes a first vision module 51, a second vision module 52, and a control console 53. The first vision module 51 is mounted on the inner wall of the test cabinet 1 and tilted towards the top surface of the transparent sample stage 2. It can capture the wetting, spreading, and diffusion of oil droplets on the upper surface of the sample from an tilted perspective, eliminating blind spots in the imaging. The second vision module 52 is fixed to the bottom of the test cabinet 1 and vertically faces the bottom surface of the transparent sample stage 2. It is used to capture the oil penetration and wicking state at the bottom of the sample, realizing omnidirectional imaging detection of both the upper and lower surfaces of the sample.

[0025] The first vision module 51 specifically includes a first mounting bracket 511, an inclined plate 512, a first mounting groove 513, and a first camera 514. The first mounting bracket 511 is fixed inside the test cabinet 1. The inclined plate 512 is fixedly connected to the mounting bracket at a 45° downward tilt. The first mounting groove 513 is formed and set along the tilt direction of the inclined plate 512. The first camera 514 is embedded and fixed inside the first mounting groove 513 and its position in the first mounting groove 513 can be adjusted. The lens is stably facing the transparent sample stage 2, maintaining a fixed tilt shooting angle to ensure a uniform imaging perspective and stable data on the upper surface.

[0026] The second vision module 52 specifically includes a second mounting bracket 521, a second mounting slot 522, and a second camera 523. The second mounting bracket 521 is fixedly installed at the bottom of the test cabinet 1. The second mounting slot 522 is formed vertically inside the second mounting bracket 521. The second camera 523 is vertically and liftably embedded in the second mounting slot 522, with the lens facing the bottom surface of the transparent sample stage 2 to achieve vertical and distortion-free imaging at the bottom.

[0027] The control console 53 is fixedly installed on the outer side of the test cabinet 1, serving as the centralized control terminal for this device. It is electrically connected to the lifting mechanism 3, all oil pumps 44, all photoelectric sensors 45, the first vision module 51, and the second vision module 52, completing the signal acquisition and motion control of the entire machine. The control console 53 integrates a main control processor, which acts as the core of the overall control system. It is configured to receive droplet detection signals from the photoelectric sensors 45 in real time, precisely control the start / stop and forward / reverse operation of each oil pump 44, control the lifting mechanism 3 to complete precise lifting and lowering, synchronously trigger the dual vision modules to complete image acquisition, and realize intelligent oil droplet rating and automated logic control of the entire testing process based on the acquired images. The drive motor 35 of the lifting mechanism 3 is controlled by the main control processor, which uniformly controls its start / stop and speed adjustment to achieve automated and precise execution of the lifting action.

[0028] Furthermore, the control console 53 is equipped with a touch display terminal 531, which has built-in independent test pages and parameter calibration pages. The test page is used to perform automatic circulating drip test tasks of the whole machine, and displays the operating status and test progress of each component of the equipment in real time. After the test, it automatically generates and stores the test report. The parameter calibration page is used for equipment debugging and maintenance. It can independently debug the lifting mechanism 3, each oil pump 44, the first vision module 51, and the second vision module 52, and read the working signals and status of all photoelectric sensors 45 in real time to achieve single-point accurate calibration.

[0029] This embodiment also discloses a method for testing the oil repellency of textiles. This method is performed based on the aforementioned textile oil repellency testing device, and the specific implementation process is as follows: S1. Sample clamping: After starting the test cabinet 1 and stabilizing its internal temperature and humidity, lay the pre-conditioned and humidified textile sample to be tested flat, without wrinkles or stretching, on the transparent sample stage 2 inside the test cabinet 1. Ensure that the sample test area is completely flat to provide a standard test base for subsequent drop and imaging detection. After ensuring that the reagents in each oil sample bottle 43 are sufficient, close the door of the test cabinet 1.

[0030] S2. Group Configuration: The operator configures the first round of tests through the test page of the touch display terminal 531 on the console 53. The device supports two test start modes: continuous multi-group synchronous dripping mode and skip-group single-group independent dripping mode. The operator can select multiple groups of dripping nozzles 42 in any continuous range as the first round of synchronous test groups according to the test requirements, or skip the previous groups and directly select any single group as the first round of test groups. The console 53 automatically locks the first round of test groups according to the operator's selection and generates the subsequent sequential test group order.

[0031] S3, Lowering the Droplet: After configuration, start the test program. The control console 53 outputs a control signal to drive the lifting mechanism 3 to run. The lifting mechanism 3 drives the oil sample stage 41 to move smoothly from the initial standby position and accurately move it to the preset standard droplet working position. After the mechanism is in place and stable, delay for 1 second to eliminate mechanical shaking error. Then, all oil pumps 44 corresponding to the first selected group are automatically started. The oil pump 44 draws the test oil from the corresponding oil sample bottle 43 and drips the oil droplets stably through the corresponding oil dripping nozzle 42, so that the oil droplets accurately fall on the surface of the preset test area of ​​the textile sample.

[0032] S4. Drip Control: During the test, each photoelectric sensor 45 independently monitors the dripping status of its corresponding drip nozzle 42 in real time. When any photoelectric sensor 45 detects a dripping signal, it immediately sends the signal back to the main control processor. The main control processor then controls the corresponding oil pump 44 to run in reverse for 1 to 2 seconds to eliminate residual pressure inside the pipeline by reversing the pressure and prevent residual oil from dripping late and causing test errors. After all the photoelectric sensors 45 corresponding to all the oil pumps 44 that are in operation in this round have successfully detected the dripping signal, the main control processor determines that the dripping operation of this group is complete.

[0033] S5. Reset Imaging: After the droplet operation is completed, the control console 53 controls the lifting mechanism 3 to drive the oil sample stage 41 to smoothly return to the initial standby position. After the mechanism is fully reset, the system automatically starts a 30-second delay to allow the oil droplets on the sample surface to fully spread, wet, and penetrate, simulating the natural test state and ensuring the authenticity and reliability of the detection effect. After the 30-second delay ends, the control console 53 simultaneously triggers the first vision module 51 and the second vision module 52 to capture images of the wetting, spreading, penetration, and wicking state of the oil droplets on the sample surface from the tilted view on the upper side of the sample and the vertical view on the lower side, respectively. All image data are transmitted back to the control console 53 in real time.

[0034] S6. Intelligent Rating: The console 53 has a built-in preset oil repellency rating standard for textiles. The main control processor performs image analysis, feature extraction, and status determination on the collected double-sided image data, and automatically completes the oil repellency performance rating of the sample. After the rating is completed, the system automatically determines whether to continue to the next group of tests, and executes the follow-up logic according to the first round configuration rules: After the first round of tests is completed, the system automatically starts the next group after the last group of the first round, and starts the subsequent group dripping test in order, repeating the entire process of S3-S5 until all 42 groups of oil drip nozzles preset by the equipment have completed the test.

[0035] S7. Data Archiving and Output: After all group cycle tests are completed, the console 53 integrates sensor detection data, double-sided image data, and oil droplet rating results for each group, automatically compiles and generates a complete textile oil repellency performance test report, completes data archiving, storage and output, and realizes fully automated testing.

[0036] In summary, the overall device of this invention features a compact structure and clear assembly logic. By combining multiple independent dripping structures with a double-sided staggered visual acquisition structure, it effectively solves the problems of single dripping method, limited detection angle, and low testing efficiency in traditional textile oil repellency testing equipment. The synchronous transmission structure of the lifting mechanism ensures stable testing conditions, and the main control processor enables fully automated closed-loop control of the entire process, including dripping sensor feedback, mechanism displacement, double-sided imaging acquisition, intelligent rating, and group sequential cyclic testing. It also considers the needs of equipment calibration and batch standardized testing. The testing process is standardized, the test data is comprehensive in dimensions, and the repeatability and accuracy are high, greatly improving the automation level and overall testing efficiency of textile oil repellency performance testing. It possesses excellent equipment practicality and industry application value.

[0037] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present invention should still fall within the scope of the patent of the present invention.

Claims

1. A device for testing the oil repellency of textiles, characterized in that: Includes a test cabinet, a transparent sample stage, a lifting mechanism, a dripping mechanism, and a detection system. A transparent sample stage is horizontally set inside the test cabinet for placing the sample to be tested. The lifting mechanism is arranged vertically on both sides of the transparent sample stage; The oil dripping mechanism is located above the transparent sample stage and is driven to move up and down by the lifting mechanism. It includes an oil sample stage, oil drip nozzles, an oil sample bottle, an oil pump, and a photoelectric sensor. The oil sample stage is horizontally arranged and movably mounted on the lifting mechanism. There are several oil drip nozzles, which are positioned downwards on the oil sample stage. Several oil sample bottles are set up, located on both sides of the oil nozzle on the oil sample stage; the oil pump is set up on the oil sample stage in a one-to-one correspondence with the oil nozzle, and is connected between the oil nozzle and the oil sample bottle; the photoelectric sensor is set up at the bottom of the oil sample stage in a one-to-one correspondence with the oil nozzle and is opposite to the oil nozzle outlet. The detection system includes a first vision module, a second vision module, and a control console. The first vision module is located above the transparent sample stage, mounted on the inner wall of the test cabinet, and tilted towards the top surface of the transparent sample stage. The second vision module is located at the bottom of the test cabinet and faces the bottom surface of the transparent sample stage. The control console is located on the outer side of the test cabinet and is electrically connected to the lifting mechanism, oil pump, photoelectric sensor, first vision module, and second vision module.

2. The textile oil repellency testing device according to claim 1, characterized in that: The lifting mechanism includes a support frame, guide columns, lead screws, nuts, and a drive motor. The support frame is installed in the test cabinet and located on both sides of the transparent sample stage. The guide columns and lead screws are vertically arranged on the support frame. The nuts are fitted onto the lead screws, and the guide columns and lead screws on the back of the oil sample stage pass through and are connected to the nuts, allowing the guide columns and lead screws to move up and down with the nuts. The drive motor is connected to the control console, and the bottom of the support frame is connected to the lead screws to drive their rotation.

3. The textile oil repellency testing device according to claim 2, characterized in that: The drive motor is connected to one of the two lead screws. The lifting mechanism also includes a synchronous pulley and a synchronous belt. The synchronous pulley is respectively disposed on the top of the two support frames and connected to the lead screw, and rotates with it. The timing belt is fitted onto the two timing pulleys.

4. The textile oil repellency testing device according to claim 1, characterized in that: The first vision module includes a first mounting bracket, an inclined plate, a first mounting slot, and a first camera. The mounting bracket is fixedly installed in the test cabinet. The inclined plate is arranged inclined downwards and connected to the mounting bracket. The mounting slot is formed in the inclined plate along the inclined direction. The first camera is assembled in the mounting slot and faces the transparent sample stage.

5. The textile oil repellency testing device according to claim 1, characterized in that: The second vision module includes a second mounting bracket, a second mounting slot, and a second camera. The second mounting bracket is disposed at the bottom of the test cabinet. The second mounting slot is formed vertically in the second mounting bracket. The second camera is assembled in the second mounting slot and faces the transparent sample stage.

6. The textile oil repellency testing device according to claim 1, characterized in that: The control console integrates a main control processor, which is electrically connected to the lifting mechanism, oil pump, photoelectric sensor, first vision module, and second vision module. The main control processor is configured to: receive the droplet detection signal from the photoelectric sensor; control the start and stop of the oil pump and its forward and reverse operation; control the lifting mechanism to move up and down; trigger the first vision module and second vision module to complete image acquisition; and automatically control the oil droplet rating and testing process of the acquired images.

7. The textile oil repellency testing device according to claim 6, characterized in that: The console is equipped with a touch display terminal, which has a built-in test page and a parameter calibration page. The test page is used to perform automatic circulating dripping tests, display the equipment's operating status in real time, and generate test reports. The parameter calibration page is used to individually debug the lifting mechanism, oil pump, first vision module, second vision module, and read real-time signals from photoelectric sensors.

8. The textile oil repellency testing device according to claim 1, characterized in that: The oil drip nozzles are arranged longitudinally at equal intervals and divided into several groups. Each group of oil drip nozzles is arranged laterally at equal intervals. The oil sample bottle is connected to each group of oil drip nozzles in a one-to-one correspondence and holds different oils.

9. A method for testing the oil repellency of textiles, based on the textile oil repellency testing device according to any one of claims 1-8, characterized in that: S1. Sample clamping: Lay the textile sample to be tested flat on the transparent sample stage inside the test cabinet; S2. Grouping Configuration: Select the first round of drip nozzle group through the console. The console will determine the order of subsequent test groups based on the selected first round of drip nozzle group. S3, Lowering the dripping liquid: The control console controls the lifting mechanism to drive the oil sample stage from the initial position to the preset dripping working position. After a 1-second delay in reaching the position, the oil pump corresponding to the selected dripping nozzle group is started. The oil pump draws oil from the oil sample bottle and drips the oil droplets onto the surface of the textile sample to be tested through the corresponding dripping nozzle. S4. Drip Control: Each photoelectric sensor detects the drip signal of the corresponding oil nozzle in real time. After a single photoelectric sensor detects the drip signal, the control console immediately controls the corresponding oil pump to run in reverse for 1-2 seconds to eliminate residual drip pressure. Once all photoelectric sensors corresponding to the oil pumps that are turned on in this round have detected the drip signal, the drip operation in this round is considered complete. S5. Reset Imaging: After this round of droplet application is completed, the console controls the lifting mechanism to move the oil sample stage back to the initial position for standby. After the reset is completed, it is left to stand for 30 seconds. After the delay, the console simultaneously triggers the first vision module and the second vision module to acquire oil droplet imaging images from the upper and lower sides of the sample and transmit them back to the console. S6. Intelligent rating: The control console analyzes the collected oil droplet images and rates the oil droplet wetting status of textiles according to the preset oil repellency rating standards. Based on the rating results, determine whether to continue to start the next dripping nozzle group for dripping test, and repeat steps S3-S5 until all dripping nozzle groups have completed the dripping test. S7. Data Archiving and Output: After all testing processes are completed, the console integrates the entire equipment operation data, image data, and oil droplet rating data, automatically generates a textile oil repellency performance test report, and completes storage and output.

10. A method for testing the oil repellency of textiles according to claim 9, characterized in that: The console configuration supports simultaneous dripping of multiple groups of nozzles or independent dripping of a single group. After the first round of testing is completed and the imaging rating is completed, the system automatically starts from the next group after the last group in the first round and sequentially completes the cyclic testing of all subsequent groups.

Images