Automatic detection and rating device and detection and rating method for water staining property

Abstract

The invention relates to an automatic detection and rating device and a detection and rating method for water staining property, and belongs to the technical field of fabric tests.The rating device comprises a test box and a movable sample loading mechanism arranged in the test box, a spraying mechanism comprises a containing cavity and a spraying nozzle, and the containing cavity is connected with a water inlet pipeline and an air inlet pipeline; the water inlet pipeline and the air inlet pipeline respectively penetrate out of the test box and are connected with a pump for performing on-off and flow control on the water inlet pipeline and the air inlet pipeline; the beating mechanism comprises two groups of beating parts, and the beating parts correspond to the bottoms of the two ends of the sample table respectively and comprise telescopic rods and beating tables connected to the output ends of the telescopic rods; the shooting rating mechanism comprises a shooting part and a rating part arranged at the rear end of the shooting part, and the rating part comprises a light emitting unit and a signal receiving unit; and the control system is arranged outside the test box. According to the invention, automatic spraying and detection rating of the fabric sample can be realized, and the consistency of the detection process of different batches of samples and the stability of the detection process of the same batch of samples are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of fabric testing, and in particular to an automatic water staining detection and rating device and a detection and rating method. Background Art

[0002] The water stickiness test of fabric mainly refers to the water stickiness test standard GB / T 4745-2012. The test method is to install the fabric sample on the sample rack, and place the sample rack at 45 degrees, and then spray 250ml of water on the fabric sample. After spraying, knock the sample rack, and then compare the fabric sample with the standard pattern to determine the water stickiness of the fabric sample and evaluate the waterproof performance of the fabric.

[0003] At present, the fabric water stickiness test is mainly carried out by staff through a fabric water stickiness tester. The patent with announcement number CN209656499U discloses a fabric water stickiness tester, which includes a base with an inclined surface, a vertical support rod with an iron ring, a funnel with a nozzle fixed at the bottom of the funnel, and a fixing clamp on the inclined surface of the base. The fabric water stickiness tester is mainly operated by personnel, and spray water is added manually. The fabric samples are manually taken, placed, tested and compared. Not only is the degree of automation low, but the subjectivity of personnel is also large, and the consistency and accuracy of the test results are difficult to guarantee. Summary of the invention

[0004] The object of the present invention is to provide an automatic water-wetting detection and rating device and detection and rating method, which can solve the technical problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic detection and rating device for water wetting, comprising a test box constructed as a rectangular box structure, and a sample loading mechanism arranged in the test box, the sample loading mechanism is movable, including a sample rack and a sample table rotatably connected to the sample rack; a spray mechanism, including a cavity and a spray nozzle connected to the bottom end of the cavity, the cavity is connected to a water inlet pipeline and an air inlet pipeline, the water inlet pipeline and the air inlet pipeline respectively pass through the test box, and the water inlet pipeline and the air inlet pipeline are respectively connected to pumps for on-off and flow control; a knocking mechanism, including two groups of knocking parts, the knocking parts respectively correspond to the bottom of the two ends of the sample table, and include a telescopic rod and a knocking table connected to the output end of the telescopic rod; a shooting and rating mechanism, including a shooting part corresponding to the position of the knocking mechanism and a rating part arranged at the rear end of the shooting part, the rating part includes a light emitting unit and a signal receiving unit; a control system arranged outside the test box.

[0006] In a preferred embodiment, the sample rack includes two supporting stands corresponding to two sides of the sample table, the top ends of the supporting stands are connected to bearing seats, and the two sides of the sample table are rotatably connected to the bearing seats via a rotating shaft.

[0007] In a preferred embodiment, the sample loading mechanism further comprises a driving motor fixedly connected to a side end of one of the supporting frames, and an output shaft of the driving motor is fixedly connected to one of the rotating shafts of the sample table.

[0008] In a preferred embodiment, a first water receiving trough corresponding to the fabric sample in a horizontal state is connected between the two supporting frames to receive water drops dripping after being knocked.

[0009] In a preferred embodiment, a background layer is adhered to the outer ring of the sample stage to provide a contrasting color corresponding to the color of the fabric sample, so as to ensure a clearer shooting effect of the fabric sample.

[0010] In a preferred embodiment, the spray mechanism further includes a control valve connected between the cavity and the spray nozzle, for controlling the spraying timing of the water in the cavity.

[0011] Based on the above-mentioned automatic detection and rating device for water wettability, the present invention further provides an automatic detection and rating method for water wettability, comprising the following steps: Step 1, clamping: Move the sample loading mechanism to the bottom of the spray mechanism, clamp the fabric sample to be tested on the sample table, and adjust the sample table to a flipped state; Step 2, spray: Start the water inlet and air inlet pipelines of the spray mechanism to spray a preset amount of water onto the fabric sample on the sample table. After the spraying is completed, adjust the sample table to a horizontal state with the spraying surface facing downward; Step 3, tap: The sample loading mechanism is moved to the position of the knocking mechanism, and the two sets of knocking parts rise respectively to knock the bottom of the sample table, wherein the knocking interval time of the two sets of knocking parts is set at 1s-5s, and the rising speed of the knocking parts is set at 0.1m / s-0.8m / s; Step 4, Rating: Move the sample loading mechanism to the position of the rating section. The light emitting unit emits light onto the spray surface of the fabric sample. The reflected or transmitted light is transmitted to the signal receiving unit. The signal receiving unit converts the optical signal into an electrical signal and transmits it to the control system for analysis to form a rating result.

[0012] In a preferred embodiment, step 2 specifically comprises the following steps: 2.1 Adjust the control valve to the closed state, open the water inlet pipeline, and store the spray water in the cavity; 2.2 When the water inflow reaches the preset value, stop the water inflow, adjust the control valve to the open state, open the air inlet pipe, and spray water onto the fabric sample; 2.3 After spraying is completed, adjust the sample table to a horizontal state.

[0013] In a preferred embodiment, in step 3, the striking interval time of the two groups of striking parts is set to 3s, and the rising speed of the striking parts is set to 0.5m / s.

[0014] In a preferred embodiment, a photographing step is further included between step 3 and step 4, wherein a photographing unit is used to photograph the two sides of the fabric sample after the tapping, so as to facilitate original record tracing.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1) The automatic detection and rating device for water wetting provided by the present invention can realize automatic spraying and detection and rating of fabric samples through the cooperation between various mechanisms. The air intake pipeline and control valve provided in the spray mechanism can ensure that the spray speed and range are controllable, and ensure the consistency of the detection process of different batches of samples and the stability of the detection process of the same batch of samples; 2) In the automatic detection and rating method, by accurately controlling the rising speed of the retractable rod in the knocking mechanism and the interval time of knocking at both ends, the stability of the detection process and the reliability of the detection results can be ensured, and the intelligence of the detection operation can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of the automatic detection and rating device for water wetting provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the test box in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the sample platform in the embodiment of the present invention.

[0017] The meaning of each number in the figure is: 1. Test chamber; 2. Sample loading mechanism; 21. Sample table; 211. Outer ring; 212. Inner ring; 213. Rotating shaft; 22. Support stand; 23. Pressure sensor; 3. Spraying mechanism; 31. Container; 32. Spraying nozzle; 33. Water inlet pipeline; 34. Air inlet pipeline; 35. Metering pump; 36. Air pump; 37. Control valve; 4. Beating mechanism; 41. Retractable rod; 42. Beating table; 5. Control system; 6. Photographing unit; 7. Rating unit; 71. Light emitting unit; 72. Signal receiving unit; 73. Light amplifier; 8. Transmission mechanism; 9. Second water receiving tank. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] See also Figure 1-Figure 2 The present invention discloses an automatic water-wetting detection and rating device, including a test box 1, and a sample loading mechanism 2, a spraying mechanism 3, a knocking mechanism 4, and a shooting and rating mechanism arranged in the test box 1, and also includes a control system 5 arranged outside the test box 1. The test box 1 serves as the bearing structure of the entire device, and each mechanism is installed through the test box 1. At the same time, the test box 1 can also provide a closed environment for the detection and rating operation to prevent the external environmental factors such as wind speed or temperature and humidity from affecting the detection results. The control system 5 is used to interlock with each mechanism to control the automatic operation of the detection and rating operation.

[0021] In the present invention, the test box 1 is constructed as a rectangular box structure, which is convenient for the installation of other mechanisms, and at least one side of the test box 1 is provided with an openable and closable transparent door, such as a glass door, which is convenient for assembling accessories inside the box and observing the operating status inside the box.

[0022] like Figure 2 As shown, the spray mechanism 3 and the shooting and rating mechanism are fixedly connected to the top of the test box 1 and are distributed along the length direction of the test box 1. The sample loading mechanism 2 is connected to the bottom of the test box 1. In the present invention, the sample loading mechanism 2 is movable. By moving, it can correspond to the position of the spray mechanism 3 or the shooting and rating mechanism, so that it can switch between the spray state and the rating state. The knocking mechanism 4 is also connected to the bottom of the test box 1, and is used to knock the sample loading mechanism 2 after the spraying is completed to screen out the water droplets on the surface. The knocking mechanism 4 can correspond to the position of the shooting and rating mechanism, and can also be set at the front end of the shooting and rating mechanism.

[0023] Specifically, the sample loading mechanism 2 includes a sample table 21 for fixing the fabric sample and a sample frame for supporting the sample table 21. The sample table 21 adopts a circular sample loading clamp in the prior art. Figure 3 The schematic diagram of the circular sample loading clamp clamping the fabric sample is shown. The fabric sample is covered on the inner ring 212 of the sample loading clamp, and then the outer ring 211 for clamping is sleeved on the inner ring 212 and the outer side of the fabric sample. The sample table 21 is rotatably connected to the sample rack, and the sample table 21 can be switched between a horizontal state and a flipped state (such as at a 45° angle to the horizontal state) by rotating.

[0024] Preferably, the sample rack includes two support stands 22, the tops of the two support stands 22 are fixed with bearing seats, and the outer ring 211 of the sample table 21 is respectively fixed with rotating shafts 213 on both sides, and is rotatably connected to the bearing seats through the rotating shafts 213. In order to realize automatic flipping of the sample table 21, the sample loading mechanism 2 further includes a driving motor (not shown in the figure) fixedly connected to the side end of one of the support stands 22, and the output shaft of the driving motor is fixedly connected to one of the rotating shafts of the sample table 21, thereby driving the sample table 21 to flip. In the present invention, the height of the support stand 22 is set between 12cm and 20cm, which is convenient for installation in the test box 1, and also reserves enough space for the flipping of the sample table 21.

[0025] See also Figure 2 In order to realize automatic movement of the sample loading mechanism 2, in the present invention, the automatic detection and rating device further includes a transmission mechanism 8 for driving the movement of the sample loading mechanism 2. The transmission mechanism 8 adopts an existing linear guide structure. The transmission mechanism 8 is fixedly connected to the bottom end of the test box 1 along the length direction of the test box 1, and the two supporting frames 22 are fixedly connected to the output end of the linear guide.

[0026] Preferably, the sample loading mechanism 2 further includes a timer (not shown) and a pressure sensor 23 connected to the bottom of the support stand 22, which is used to record the spraying time to ensure that the spraying time meets the standard requirements. When the spraying mechanism 3 sprays the sample table 21, the pressure sensor 23 senses the pressure and transmits the signal to the control system 5 connected thereto, and the control system 5 controls the timer to start timing. When the spraying ends and the pressure sensor 23 does not sense the pressure change, the timing ends.

[0027] See again Figure 2The spray mechanism 3 includes a chamber 31 with a funnel-shaped structure and a spray nozzle 32 connected to the bottom of the chamber 31. The chamber 31 is fixedly connected to the top of the box body of the test box 1 through a mounting frame. In the present invention, the top of the chamber 31 is a sealed structure. The side end of the chamber 31 is connected to a water inlet pipeline 33, and the top end is connected to an air inlet pipeline 34. The water inlet pipeline 33 and the air inlet pipeline 34 pass through the test box 1 respectively. The water inlet pipeline 33 is connected to a water source outside the test box 1, and the air inlet pipeline 34 is connected to a compressed air source outside the test box 1. The water inlet pipeline 33 is connected to a metering pump 35 for on-off and flow control. The metering pump 35 can realize automatic water inlet and can accurately control the water inlet amount; the air inlet pipeline 34 is connected to an air pump 36 for on-off and flow control. The present invention sets a compressed air intake pipeline 34, which can control the flow rate of the water outlet on the one hand, so that the water in the cavity 31 can be sprayed within a preset time, and on the other hand, it can control the water outlet pressure. When the water in the cavity 31 is sprayed through the spray nozzle 32, the water outlet pressure is controlled by compressed air, and the spraying range of the spray nozzle 32 can be adjusted to ensure full coverage of the sample table 21.

[0028] Furthermore, the spray mechanism 3 also includes a control valve 37 connected between the chamber 31 and the spray nozzle 32. During the water intake process, the control valve 37 is in a closed state, so that the water is stored in the chamber 31. When the water intake reaches a preset value, the water intake is stopped, and the metering pump 35 feeds back the signal to the control system 5 connected thereto. The control system 5 starts the control valve 37 and the air pump 36, and the compressed air enters to spray the water through the spray nozzle 32. Compared with the traditional method in which the staff pours water into the funnel while spraying, this method can better ensure the consistency of the pouring speed, thereby ensuring the stability and accuracy of the test results.

[0029] Continue to see Figure 2The knocking mechanism 4 includes two groups of knocking parts, which can be connected to the bottom of the box body of the test box 1, or can be connected to both sides of the linear guide seat. The two groups of knocking parts correspond to the bottoms of the two ends of the sample table 21, respectively, and are used to knock the two ends of the sample table 21 to screen out the water droplets on the fabric sample. Specifically, the knocking part includes a telescopic rod 41 and a knocking table 42 fixedly connected to the output end of the telescopic rod 41. In the present invention, the telescopic rod 41 adopts the existing automatic telescopic rod structure, which can realize automatic linear telescopic movement with adjustable speed. Exemplarily, an electric push rod structure can be adopted, and the knocking table 42 is made of stainless steel to prevent rust. Driven by the telescopic rod 41, the knocking table 42 can be raised and lowered, and touch and knock the bottom of the outer ring 211 of the sample table 21. The knocking force and the interval time of knocking at both ends are adjusted by the control system 5 for the motion control of the telescopic rod 41. Preferably, the rising speed of the telescopic rod 41 is set between 0.1m / s-0.8m / s. If the rising speed is too fast, the sample table 21 is easily knocked crooked. If the rising speed is too slow, it is difficult to remove the water droplets on the fabric sample. The interval time of knocking at both ends should not be too short, otherwise it is easy to cause the vibration wave to overlap, affecting the effect of removing water droplets. The interval time is preferably set at 1s-5s; more preferably, the rising speed of the telescopic rod is set at 0.5m / s, and the knocking interval time at both ends is set at 3s.

[0030] It should be noted that when knocking, the sample table 21 needs to be in a horizontal state, and the spraying surface is downward. In order to prevent water from flowing horizontally during the knocking process and the spraying process, in the present invention, a first water receiving trough (not shown in the figure) corresponding to the position of the fabric sample in the horizontal state is also connected between the two support frames 22. It should be noted that the first water receiving trough should correspond to the position of the inner ring 212 as much as possible in the width direction to prevent interference with the movement of the telescopic rod 41; and the first water receiving trough should be set as close to the bottom position of the support frame 22 as possible to prevent interference with the flipping of the sample table 21. In order to further receive excess moisture, preferably, a second water receiving trough 9 is provided at the bottom of the test box 1 and on both sides of the conveying mechanism 8, and the second water receiving trough 9 extends from the position of the spraying mechanism 3 to the position of the knocking mechanism 4. The second water receiving trough 9 is constructed as a cavity structure with a leaking platform on the top, and a plurality of holes are provided on the leaking platform to allow the screened moisture to flow into the cavity in time. Drainage pipelines can be installed at the bottom of the first water receiving trough and the second water receiving trough 9, and the drainage pipeline extends from the bottom of the test box 1.

[0031] like Figure 2As shown, the photographing and rating mechanism includes a photographing part 6 and a rating part 7. The photographing part 6 is fixedly connected to the top of the box body of the test box 1 and corresponds to the position of the knocking mechanism 4. The photographing part 6 is used to photograph and retain the state of the fabric sample after the knocking is completed, so as to facilitate tracing. The photographing part 6 can use existing photo or video shooting equipment. When the sample table 21 reaches the position of the photographing part 6, the retractable rod 41 drives the knocking table 42 to rise at a constant speed and hit the sample table 21. The retractable rods 41 on both sides rise respectively. After the collision is completed, the photographing part 6 takes photos of the front and back of the sample. In the present invention, the clamping outer ring 211 of the sample table 21 is adhered with a background layer, and the corresponding contrasting background color can be adhered according to the color of the fabric sample to ensure a clearer shooting effect of the fabric sample, such as Figure 3 As shown, the corresponding outer ring 211 wall should have sufficient thickness to achieve better contrast shooting effect.

[0032] The rating unit 7 is arranged at the rear end of the shooting unit 6, and includes a light emitting unit 71 and a signal receiving unit 72. The light emitting unit 71 is fixedly connected to the top of the box body of the test box 1, and the signal receiving unit 72 is arranged in two groups, which are respectively connected to the top of the box body of the test box 1 and the linear guide rail seat. When the sample table 21 moves to the bottom of the light emitting unit 71, the light emitting unit 71 emits a fixed light to the fabric sample, and the reflected or transmitted light is received by the two signal receiving units 72. The signal receiving unit 72 converts the light signal into an electrical signal and transmits it to the control system 5 for rating result analysis. Preferably, the shooting rating mechanism also includes a light amplifier 73 arranged between the light emitting unit 71 and the sample table 21, and the light amplifier 73 can ensure that the light covers the entire sample.

[0033] It can be understood that in the present invention, each action process of the automatic water-wetting detection and rating device is controlled by the control system 5. The control system 5 may specifically include a control chip or a single-chip microcomputer that can control multiple mechanisms according to a predetermined program so that each mechanism can start, stop or perform other actions according to a preset process.

[0034] The following further describes in detail the method of using the above-mentioned automatic water-wetting detection and rating device to perform detection and rating in conjunction with the embodiments. It should also be understood that the following embodiments are only used to further illustrate the present invention and cannot be construed as limiting the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] The present embodiment discloses a method for automatically detecting and rating water wettability, comprising the following steps: Step 1, clamping: 1.1 Move the sample loading mechanism 2 to the bottom of the spraying mechanism 3; 1.2 Clamp the fabric sample to be tested on the sample table 21, start the drive motor, and adjust the sample table 21 to a flipped state at an angle of 45° to the horizontal plane; Step 2, spray: 2.1 Adjust the control valve 37 of the spray mechanism 3 to the closed state, open the water inlet pipe 33, and store the spray water in the chamber 31; 2.2 When the water intake reaches the preset value, the water intake is stopped, and the control valve 37 is adjusted to the open state, and the air intake pipeline 34 is opened, and the water is sprayed onto the fabric sample on the sample table 21 by the push of compressed air; 2.3 After the spraying is completed, adjust the sample table 21 to a horizontal state with the spraying surface facing downward; Step 3, tap: 3.1 The sample table 21 is moved to the position of the knocking mechanism 4 by the conveying mechanism 8; 3.2 The two groups of knocking parts rise respectively, and knock the bottom of the sample platform 21 through the knocking platform 42, wherein the knocking interval time of the two groups of knocking parts is set to 1s, and the rising speed of the two knocking platforms 42 is set to 0.8m / s; Step 4, shoot: The photographing unit 6 photographs the fabric sample after the tapping. After the photographing is completed, the fabric sample is turned over 180 degrees so that the spraying surface faces upward and photographed again. Step 5, Rating: 5.1 The sample table 21 is moved to the position of the rating section 7 by the conveying mechanism 8; 5.2 Preliminary evaluation: The light emitting unit 71 emits a fixed light to the spray surface of the fabric sample, and the light is used to cover the entire fabric sample through the light amplifier 73. The reflected or transmitted light is transmitted to the two signal receiving units 72. The signal receiving units 72 convert the optical signal into an electrical signal, process it, and transmit it to the control system 5. The control system 5 forms a preliminary evaluation result through analysis; 5.3 Re-rating: Turn the fabric sample 180° with the spray side facing downward, and irradiate the sprayed back of the fabric sample again according to the steps in 5.2, and compare the irradiation analysis results with the blank sample that has not been sprayed. If the comparison results are consistent, it is judged that the fabric sample is not soaked, and the rating is based on the initial rating result; if the comparison results are inconsistent, it is judged that the sprayed back of the fabric sample is soaked, and the rating is increased by half a level based on the initial rating result.

[0037] Embodiment 2:

[0038] The automatic detection and rating method for water stickiness provided in Example 2 is basically the same as that in Example 1, except that in step 3.2 of Example 2, the tapping interval time of the two groups of tapping parts is set at 3s, and the rising speed of the two tapping platforms 42 is set at 0.5m / s.

[0039] Embodiment 3:

[0040] The automatic detection and rating method for water stickiness provided in Example 3 is basically the same as that in Example 1, except that in step 3.2 of Example 3, the striking interval time of the two groups of striking parts is set at 3s, and the rising speed of the two striking platforms 42 is set at 0.3m / s.

[0041] Embodiment 4:

[0042] The automatic detection and rating method for water stickiness provided in Example 4 is basically the same as that in Example 1, except that in step 3.2 of Example 4, the tapping interval time of the two groups of tapping parts is set at 5s, and the rising speed of the two tapping platforms 42 is set at 0.1m / s.

[0043] Comparative Example 1: The automatic detection and rating method for water stickiness provided in Comparative Example 1 is basically the same as that in Example 1, except that in step 3.2 of Comparative Example 1, the tapping interval time of the two groups of tapping parts is set at 3s, and the rising speed of the two tapping platforms 42 is lower than the set range, set at 0.08m / s.

[0044] Comparative Example 2: The automatic detection and rating method for water stickiness provided in Comparative Example 2 is basically the same as that in Example 1, except that in step 3.2 of Comparative Example 2, the tapping interval time of the two groups of tapping parts is lower than the set range, set at 0.8s, and the rising speed of the two tapping platforms 42 is set at 0.3m / s.

[0045] In combination with the detection and rating methods provided in Examples 1 to 4 and Comparative Examples 1 and 2, multiple rounds of rating tests will be performed in combination with different fabric samples: 1. First round of testing Examples 1 to 4 and Comparative Examples 1 and 2 all use the following two fabric samples for testing and rating: Sample 1: Single-layer woven fabric, weight 200g / m 2 ; Sample 2: Laminated woven fabric, reverse side laminated, weight 211g / m 2 .

[0046] The rising speed of the telescopic rod 41 and the tapping interval time of the two tapping platforms 42 in Examples 1 to 4 and Comparative Examples 1 and 2 are shown in Table 1. In addition, the results of the detection and rating by the staff using the traditional device are used as the comparison benchmark. In order to reduce the influence of subjective factors and ensure the relative accuracy of the comparison benchmark, at least five staff members are used to conduct the test in the same working environment: Table 1 Parameter settings of the striking mechanism

[0047] The test and rating results of each embodiment and comparative example are shown in Table 2: Table 2 Detection rating data

[0048] By comparing the above test and rating results, it can be seen that the test results of Examples 2 and 3 are most similar to the reference example, the test results of other examples are relatively similar to the reference example, while the test results of the two comparative examples are quite different from those of the reference example. The rising speed of the knocking table of Comparative Example 1 is lower than the set range, and the knocking interval time of the two groups of knocking parts of Comparative Example 2 is lower than the set range. Therefore, the difference in the test results of the two comparative examples is related to the incomplete removal of water droplets on the fabric samples during the knocking process.

[0049] Second round of testing Next, the knocking parameters of Example 2 and Example 3 are used to further verify the test results using other samples. Similarly, the test results of five workers in the same working environment are still used as the comparison benchmark: Sample 3: 60% polyester / 40% cotton knitted fabric Sample 4: Pure cotton knitted fabric Sample 5: Pure viscose woven fabric Sample 6: 60% viscose / 40% cotton woven fabric The test and rating results of each sample are shown in Table 3: Table 3 Detection rating data Unit: Level

[0050] It can be seen from the above detection and rating results that the detection and rating results of Example 6 using the tapping parameters of Example 2 are highly consistent with the results of the reference example.

[0051] 3. The third round of testing In this round of testing, sample 1 is used again to test the stability of each embodiment. The testing method is: each embodiment uses sample 1 of the same material to perform at least 5 rounds of testing, and the consistency between the test rating results is compared. The test results are shown in Table 4: Table 4 Detection rating data Unit: Level

[0052] It can be seen from the above detection and rating results that, by adopting the automatic water-wetting detection and rating device provided by the present invention, the detection results of different batches are highly consistent, and the deviation of the rating results is within half a level.

[0053] Based on the results of each round of inspection and rating, it can be seen that the tapping process has a greater impact on the accuracy of the inspection results. In the tapping process, when the rising speed of the telescopic rod of the telescopic frame is set to 0.1m / s-0.8m / s, and the interval time of tapping at both ends is set to 1s-5s, the test results are relatively close to the comparison benchmark. When the rising speed of the telescopic rod of the telescopic frame is set to 0.5m / s, and the interval time of tapping at both ends is set to 3s, the test results are closest to the comparison benchmark.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic water-wetting detection and rating device, characterized in that: include: The test box (1) is constructed as a rectangular box structure; And arranged in the test chamber (1): A sample loading mechanism (2), wherein the sample loading mechanism (2) is movable and comprises a sample rack and a sample table (21) rotatably connected to the sample rack; The spray mechanism (3) comprises a chamber (31) and a spray nozzle (32) connected to the bottom end of the chamber (31); the chamber (31) is connected to a water inlet pipeline (33) and an air inlet pipeline (34); the water inlet pipeline (33) and the air inlet pipeline (34) respectively pass through the test box (1); the water inlet pipeline (33) and the air inlet pipeline (34) are respectively connected to pumps for switching on and off and controlling the flow rate thereof; The knocking mechanism (4) comprises two sets of knocking parts, the knocking parts respectively corresponding to the bottoms of both ends of the sample platform (21), and comprising a telescopic rod (41) and a knocking platform (42) connected to the output end of the telescopic rod (41); A photographing and rating mechanism, comprising a photographing portion (6) corresponding to the position of the striking mechanism (4) and a rating portion (7) arranged at the rear end of the photographing portion (6), wherein the rating portion (7) comprises a light emitting unit (71) and a signal receiving unit (72); A control system (5) is arranged outside the test box (1).

2. The automatic detection and rating device for water wetting according to claim 1 is characterized in that: The sample rack comprises two supporting frames (22) corresponding to two sides of the sample table (21), the top ends of the supporting frames (22) are connected to bearing seats, and the two sides of the sample table (21) are rotatably connected to the bearing seats via rotating shafts (213).

3. The automatic detection and rating device for water wetting according to claim 2, characterized in that: The sample loading mechanism (2) further comprises a driving motor fixedly connected to a side end of one of the supporting frames (22), and an output shaft of the driving motor is fixedly connected to one of the rotating shafts (213) of the sample table (21).

4. The automatic detection and rating device for water wetting according to claim 2, characterized in that: A first water receiving trough corresponding to the fabric sample in a horizontal state is also connected between the two supporting frames (22).

5. The automatic water-wetting detection and rating device according to claim 1, characterized in that: A background layer is adhered to the outer ring (211) of the sample stage (21).

6. The automatic water-wetting detection and rating device according to claim 1, characterized in that: The spray mechanism (3) also includes a control valve (37) connected between the chamber (31) and the spray nozzle (32).

7. A detection and rating method based on the automatic detection and rating device for water wettability according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1, clamping: The sample loading mechanism (2) is moved to the bottom of the spray mechanism (3), the fabric sample to be tested is clamped on the sample table (21), and the sample table (21) is adjusted to a flipped state; Step 2, spray: The water inlet pipeline (33) and the air inlet pipeline (34) of the spray mechanism (3) are started to spray a preset amount of water onto the fabric sample on the sample table (21); after the spraying is completed, the sample table (21) is adjusted to a horizontal state with the spraying surface facing downward; Step 3, tap: The sample loading mechanism (2) is moved to the position of the knocking mechanism (4), and the two sets of knocking parts are respectively raised to knock the bottom of the sample table (21), wherein the knocking interval time of the two sets of knocking parts is set to 1s-5s, and the rising speed of the knocking parts is set to 0.1m / s-0.8m / s; Step 4, Rating: The sample loading mechanism (2) is moved to the position of the rating section (7), the light emitting unit (71) emits light to the spray surface of the fabric sample, the reflected or transmitted light is transmitted to the signal receiving unit (72), the signal receiving unit (72) converts the light signal into an electrical signal and transmits it to the control system (5) for analysis, thereby forming a rating result.

8. The method for automatic detection and rating of water wetting according to claim 7, characterized in that: Step 2 specifically includes the following steps: 2.1 Adjust the control valve (37) to the closed state, open the water inlet pipe (33), and store the spray water in the chamber (31); 2.2 When the water inflow reaches a preset value, the water inflow is stopped, and the control valve (37) is adjusted to an open state, and the air inlet pipe (34) is opened to spray water onto the fabric sample; 2.3 After spraying is completed, adjust the sample table (21) to a horizontal state.

9. The method for automatic detection and rating of water wettability according to claim 7, characterized in that: In step 3, the striking interval between the two sets of striking parts is set at 3s, and the rising speed of the striking parts is set at 0.5m / s.

10. The method for automatic detection and rating of water wettability according to claim 7, characterized in that: A photographing step is also included between step 3 and step 4, in which a photographing unit (6) is used to photograph the two sides of the fabric sample after the tapping.

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