A high-speed rotating dynamic contact angle measuring instrument

Abstract

The utility model relates to contact angle measurement technical field especially is a kind of high-speed rotary dynamic contact angle measuring instrument, the high-speed rotary dynamic contact angle measuring instrument, including load module, drop module, measurement module;Load module includes rotating base, setting in rotating base's load platform, setting in the clamp of load platform;Clamp clamps workpiece;Drop module includes first mobile module, setting in the mounting bracket of first mobile module, setting in the drop head of mounting bracket;Drop head drops drop to workpiece;Measurement module includes second mobile module, setting in the video camera of second mobile module, setting in the light source of load platform side by. When measuring, workpiece is placed in load platform, clamp clamps workpiece.2, first mobile module drives drop head to move to workpiece above, drop head drops drop to workpiece.3, second mobile module drives video camera to move to workpiece, completes photographing detection, so that process connection is more close, help to improve test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of contact angle measurement technology, and in particular to a high-speed rotating dynamic contact angle measuring instrument. Background Technology

[0002] The main reason for contact angle measurement is to study the interaction between liquids and solids and to understand key parameters such as the wettability, surface energy, and surface properties of solid surfaces.

[0003] Contact angle measurement is typically performed using a contact angle measuring instrument. During measurement, the workpiece is placed on the measuring stage, a dripping device drips liquid onto the workpiece, the workpiece is rotated, and a camera takes a picture of the workpiece, thus achieving the contact angle measurement.

[0004] There are many instruments on the market that can be used to measure contact angle, but some contact angle measuring instruments have a loading stage that moves in the xyz direction. The workpiece moves in the xyz direction to complete actions such as loading, dripping, and taking pictures. In production practice, it has been found that the process connection of this design is not tight and the testing efficiency is low.

[0005] For example, Chinese patent application number CN201920688519.1 discloses a contact angle tension mixing tester; specifically, it discloses that "first, the sample is fixed on the sample stage and the sample is ensured to be flat. The measuring liquid is added to the sample bottle, and the sampling needle is inserted into it; the device is powered on and the device initializes the XYZ motion module; the sampling needle is rotated from the horizontal position to the vertical position; the sampling pump is started to exhaust air and allow the liquid to fill the sampling pipeline; the light source system is turned on and the light source brightness adjustment knob is used to adjust to a suitable brightness; the angle of the camera device is adjusted by the adjustment device so that it is always aimed at the sample stage to collect images; the Z-axis moves upward to stick the liquid to the sample, the camera device takes pictures, and the pictures are stored at the same time; the camera device transmits the collected image information to the computer through the signal line, and the computer system calculates the contact angle in real time; according to the required number of tests, the XYZ motion module is manually controlled to adjust and move in the XY direction; thus, pictures are taken at different positions, and finally high-throughput testing is achieved." It is evident that the workpiece under this design moves in the XYZ directions, corresponding to the completion of the corresponding process. The connection between the processes is not tight, resulting in low testing efficiency. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a high-speed rotating dynamic contact angle measuring instrument with tightly connected processes, which helps to improve testing efficiency and thus overcome the shortcomings of the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This application provides a high-speed rotating dynamic contact angle measuring instrument, including a material loading module, a dripping module, and a measuring module;

[0009] The loading module includes a rotating base, a loading platform set on the rotating base, and a clamp set on the loading platform; the clamp's chuck holds the workpiece.

[0010] The dripping module includes a first moving module, a mounting bracket disposed on the first moving module, and a dripping head disposed on the mounting bracket; the dripping head can drip liquid onto the workpiece.

[0011] The measurement module includes a second moving module, a camera mounted on the second moving module, and a light source mounted on the side of the loading platform.

[0012] Preferably, an angle adjustment device is also provided between the rotating base and the loading platform; the angle adjustment device includes a first leveling module and a second leveling module;

[0013] The first leveling module includes a first slider and a second slider, with a first adjustment ruler disposed between the first slider and the second slider;

[0014] The second leveling module includes a third slider and a fourth slider, with a second adjustment ruler positioned between the third slider and the fourth slider.

[0015] Preferably, the first moving module includes a first lead screw servo device and a first sensor disposed on the side of the first lead screw servo device; a first trigger plate is disposed on the first slide of the first lead screw servo device; the first trigger plate can trigger the first sensor.

[0016] Preferably, the mounting bracket includes a first frame, a second frame, and a third leveling module; the third leveling module includes a fifth slider and a sixth slider, and a third adjusting ruler is provided between the fifth slider and the sixth slider; wherein, the fifth slider is located on the second frame; and the sixth slider is located on the first frame.

[0017] Preferably, a laser displacement sensor is provided on the first frame; the laser displacement sensor can sense the workpiece.

[0018] Preferably, the second moving module is provided with a second height adjustment module; the camera is disposed in the second height adjustment module; the second moving module includes a second lead screw servo device and a second sensor disposed beside the second lead screw servo device; a second trigger plate is disposed on the second slide of the second lead screw servo device; the second trigger plate can trigger the second sensor.

[0019] Preferably, the material loading module is mounted on the base plate; the dripping module is mounted on the top plate; a support rod is provided between the top plates; a reflector is provided on one side of the support rod, and the light source is located on the reflector.

[0020] Preferably, the dripping module further includes an injection module, which includes an injector and a push rod connected to the injector; the outlet of the injector is connected to the dripping head.

[0021] Preferably, the liquid injection module, the material loading module, the liquid dripping module, and the measurement module are housed inside a cabinet, and the cabinet has a door on its side; the bottom of the cabinet is equipped with casters, and the casters are equipped with adjustable support feet.

[0022] Preferably, the loading platform is provided with at least three clamps at equal angles.

[0023] This invention has significant advantages and beneficial effects compared with existing technologies. Specifically, as shown in the above technical solution, the material loading module is used to load the workpiece, the liquid dripping module drips liquid onto the workpiece, and the measurement module performs the measurement. 1. During measurement, the workpiece is placed on the loading platform, and the fixture clamps the workpiece. 2. The first moving module drives the dripping head to move above the workpiece, and the dripping head drips liquid onto the workpiece. 3. The second moving module drives the camera to move towards the workpiece to complete the photographic inspection. The workpiece does not need to move, shortening the waiting time between each process. Therefore, the process connection under this design is more compact, which helps to improve testing efficiency. Attached Figure Description

[0024] Figure 1 This is a side view schematic diagram of an embodiment of the present utility model.

[0025] Figure 2 This is a partial structural schematic diagram of an embodiment of the present utility model.

[0026] Figure 3 This is a schematic diagram of the measurement module according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the dripping module according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the material loading module according to an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the dripping module part of an embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the overall structure of an embodiment of this utility model.

[0031] Explanation of reference numerals in the attached diagram:

[0032] 10. Cabinet; 11. Cabinet door; 12. Base plate; 13. Support rod; 14. Top plate; 15. Reflector; 16. Casters; 20. Loading module; 21. Motor; 22. Rotating base; 23. Loading platform; 24. Fixture; 25. Workpiece; 210. Angle adjustment device; 211. First leveling module; 212. First slider; 213. Second slider; 214. First adjusting ruler; 215. Second leveling module; 216. Third slider; 217. Fourth slider; 218. Second adjusting ruler; 30. Drip module; 31. First moving module; 3 2. First lead screw servo device; 33. First sensor; 34. First slide; 35. First trigger plate; 36. First connecting rod; 37. Second connecting rod; 310. Mounting bracket; 311. First frame; 312. Second frame; 313. Drop head; 314. Laser displacement sensor; 315. Third leveling module; 316. Fifth slider; 317. Sixth slider; 318. Third adjusting ruler; 40. Measurement module; 41. Second moving module; 42. Second lead screw servo device; 43. Second slide; 44. Second sensor; 45. Second trigger plate; 46. Camera; 47. Second height adjustment module; 48. Light source; 310. Injection module; 311. Push rod; 312. Injector. Detailed Implementation

[0033] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0034] Please refer to Figures 1 to 7 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is a high-speed rotating dynamic contact angle measuring instrument.

[0035] In this design, workpiece 25 is placed on the loading platform 23, and the clamp of fixture 24 holds workpiece 25. The first moving module 31 drives the dripping head 313 to move toward workpiece 25, and the dripping head 313 drips liquid onto workpiece 25; the second moving module 41 drives the camera 46 to move toward workpiece 25, and the camera takes pictures of workpiece 25 for inspection. This design makes the process connection closer and helps to improve inspection efficiency.

[0036] This application provides a high-speed rotating dynamic contact angle measuring instrument, including a material loading module 20, a liquid dripping module 30, and a measuring module 40. The material loading module 20 includes a rotating base 22, a material loading platform 23 disposed on the rotating base 22, and a clamp 24 disposed on the material loading platform 23; the clamp 24 holds a workpiece 25. The liquid dripping module 30 includes a first moving module 31, a mounting bracket 310 disposed on the first moving module 31, and a liquid dripping head 313 disposed on the mounting bracket 310; the liquid dripping head 313 can drip liquid onto the workpiece 25. The measuring module 40 includes a second moving module 41, a camera 46 disposed on the second moving module 41, and a light source 48 disposed beside the material loading platform 23. The workpiece 25 is placed on the material loading module 20, and the liquid dripping module 30 drips detection liquid onto the workpiece 25; the measuring module 40 takes pictures of the workpiece 25 for detection. The preferred working steps are as follows: 1. A robot or worker places the workpiece 25 on the loading platform 23, and the clamp of the fixture 24 holds the workpiece 25. 2. The first moving module 31 drives the mounting bracket 310 to move above the workpiece 25, and the dripping head 313 drips liquid onto the workpiece 25. 3. The first moving module 31 drives the camera 46 to move, and the camera 46 takes pictures of the workpiece 25 and the liquid droplets. 4. The rotating base 22 rotates, causing the liquid to spread on the workpiece 25. 5. The workpiece 25 stops rotating, and the camera 46 takes a second picture of the workpiece 25 and the liquid. The two sets of data are compared to detect the result. Therefore, after the workpiece 25 is placed on the loading platform 23, the cooperation between the dripping module 30 and the measurement module 40 makes the connection between processes closer, which helps to improve detection efficiency. At the same time, the structure of this design is simpler, and the equipment cost is also lower.

[0037] Preferably, an angle adjustment device 210 is further provided between the rotating base 22 and the loading platform 23; the angle adjustment device 210 includes a first leveling module 211 and a second leveling module 215. The angle adjustment device 210 is used to adjust the levelness of the loading platform 23, so that the loading platform 23 can be in a horizontal state.

[0038] The first leveling module 211 includes a first slider 212 and a second slider 213, with a first adjusting ruler 214 positioned between them. The first slider 212 and the second slider 213 can slide relative to each other. The first adjusting ruler 214 is used to adjust the amount of movement between the first slider 212 and the second slider 213. After adjustment, the first slider 212 and the second slider 213 are locked. The first adjusting ruler 214 is preferably a micrometer. The first slider 212 and the second slider 213 have arc-shaped surfaces, allowing adjustment of the elevation angle in the x-axis direction through relative sliding of the first slider 212 and the second slider 213.

[0039] The second leveling module 215 includes a third slider 216 and a fourth slider 217, with a second adjusting ruler 218 positioned between them. The third slider 216 and the fourth slider 217 can slide relative to each other. The first adjusting ruler 214 is used to adjust the amount of movement between the third slider 216 and the fourth slider 217. After adjustment, the third slider 216 and the fourth slider 217 are locked. The second adjusting ruler 218 is preferably a micrometer. The third slider 216 and the fourth slider 217 have arc-shaped surfaces, and their relative sliding allows adjustment of the elevation angle in the y-axis direction. Therefore, the loading platform 23 can be quickly leveled with the cooperation of the first leveling module 211 and the second leveling module 215, featuring a simple structure and convenient operation. A leveling module is a device used to adjust and maintain the flatness of an object, commonly used in various mechanical equipment and automation systems to ensure stable operation and precise control of the equipment. The main function of the leveling module is to adjust the posture of an object to make it level, thereby eliminating the effects caused by unevenness.

[0040] Preferably, the first moving module 31 includes a first lead screw servo device 32 and a first sensor 33 disposed beside the first lead screw servo device 32; a first trigger plate 35 is disposed on the first slide 34 of the first lead screw servo device 32; the first trigger plate 35 can trigger the first sensor 33. A laser displacement sensor 314 is disposed on the first frame 311; the laser displacement sensor 314 can sense the workpiece 25. The rotating base 22 is driven to rotate by a high-precision DD motor. The first lead screw servo device 32 drives the dripping module 30 to move back and forth through the first slide 34. The first trigger plate 35 and the first sensor 33 cooperate to control the amount of movement of the dripping module 30. At the same time, the laser displacement sensor 314 on the mounting bracket 310 can accurately position the workpiece 25, ensuring that the dripping head 313 accurately drips liquid onto the workpiece 25.

[0041] An angle adjustment device 210 is also provided between the rotating base 22 and the loading platform 23, and the clamp 24 is installed on the loading platform 23. The first leveling module 211 and the second leveling module 215 form a 90° angle in two directions to adjust the levelness of the loading platform 23, ensuring that the end face runout during rotation does not exceed 0.01mm. The dripping module 30 can realize dripping measurement of each point of the sample in polar coordinates, and can also use the laser sensor next to the side head to assist in adjusting the end face runout of the sample. The center of the camera, the center of the workpiece 25, and the center of the light source 48 are aligned and horizontally mounted on the base plate 12. The camera group is also mounted on a second moving module 41, which is controlled by software to move simultaneously with the dripping head 313 to maintain the focal length, which is more efficient. During measurement, the camera 46 can observe the forward roll angle and the dripping angle of the material during rotation. The liquid will drip into the gap between the workpiece 25 and the probe, and then the rotating base 22 will rotate at 200r / min. The surface properties of the sample under dynamic working conditions are calculated by observing the shape of water droplets in the gap.

[0042] Preferably, the mounting bracket 310 includes a first frame 311, a second frame 312, and a third leveling module 315; the third leveling module 315 includes a fifth slider 316 and a sixth slider 317, with a third adjusting ruler 318 disposed between the fifth slider 316 and the sixth slider 317; wherein, the fifth slider 316 is disposed on the second frame 312; and the sixth slider 317 is disposed on the first frame 311. A first connecting rod 36 is disposed on the first frame 311, and a second connecting rod 37 is disposed on the second frame 312. The first connecting rod 36 and the second connecting rod 37 can improve the firmness and stability of the assembly. The fifth slider 316 and the sixth slider 317 are provided with arc-shaped surfaces. By adjusting the sliding amount between them, the drip head 313 is made to be in a horizontal state. After the drip head 313 is leveled, the fifth slider 316 and the sixth slider 317 are locked. The drip head 313 is disposed on the second frame 312. During adjustment, rotating the third adjusting ruler 318 applies an upward force to the second frame 312 and a downward force to the first frame 311. After the drip head 313 is leveled, the fifth slider 316 and the sixth slider 317 are locked. The specific working principle can be referred to the first leveling module 211 or the second leveling module 215, the difference being the direction of adjustment.

[0043] Preferably, the second moving module 41 is provided with a second height adjustment module 47; the camera 46 is disposed on the second height adjustment module 47; the second moving module 41 includes a second lead screw servo device 42 and a second sensor 44 disposed beside the second lead screw servo device 42; a second trigger plate 45 is disposed on the second slide 43 of the second lead screw servo device 42; the second trigger plate 45 can trigger the second sensor 44. The second lead screw servo device 42 drives the camera to move through the second slide 43. The second trigger plate 45 and the second sensor 44 work together to accurately position the camera. The second height adjustment module 47 is an adjustable support, the accuracy of which is controlled by a fourth adjusting ruler. The fourth adjusting ruler is a micrometer. Specifically, the second height adjustment module 47 can be one of a lead screw adjustment support, a hydraulic adjustment support, or a rack and pinion adjustment support. The first sensor 33 and the second sensor 44 are electrical sensors.

[0044] Among them, the lead screw servo device is a transmission device that combines a servo motor 21 and a lead screw. It is mainly used to convert the rotational motion of the servo motor 21 into linear motion and to achieve precise position control and stable motion output.

[0045] Preferably, the material-carrying module 20 is mounted on the base plate 12; the dripping module 30 is mounted on the top plate 14; a support rod 13 is provided between the top plates 14; a light source 48 is mounted on one side of the support rod 13, and a reflector plate 15 is mounted on the reflector plate 15. The support rod 13 is preferably a stainless steel rod or a chrome-plated rod. The support rod 13 serves an assembly function, making assembly more convenient. The light source 48 is an LED lamp. The reflector plate 15 directs the light towards the workpiece 25, resulting in better illumination.

[0046] Preferably, the dripping module further includes an injection module 320, which includes an injector 312 and a push rod 311 connected to the injector 312; the outlet of the injector 312 is connected to the dripping head 313 via a flexible tube. The injector 312 is a machine capable of injecting liquid into other materials, and the injection volume is precisely controlled by adjusting the flow rate and pressure of the liquid. The push rod 311 is driven by a lead screw servo module, which can precisely control the injection volume.

[0047] Preferably, the liquid injection module 320, the material loading module 20, the dripping module 30, and the measuring module 40 are housed inside the cabinet 10, and the cabinet 10 has a cabinet door 11 on its side; the bottom of the cabinet 10 is equipped with casters 16, and the casters 16 are equipped with adjustable support feet. The cabinet 10 can be a stainless steel cabinet. The cabinet door 11 facilitates inspection and maintenance. The casters 16 facilitate the transfer of equipment. The support feet can be unscrewed from the support frame to support the cabinet 10, which is very convenient.

[0048] Preferably, the loading platform 23 is provided with at least three clamps at equal angles to firmly clamp the workpiece 25 and ensure that the workpiece 25 will not come loose.

[0049] In summary, the key design features of this invention are: the clamp 24 on the loading platform 23 holds the workpiece 25; the dripping head 313 is mounted on the first moving module 31; and the camera 46 is mounted on the second moving module 41. The first moving module 31 drives the dripping head 313 to drip liquid onto the workpiece 25, and the second moving module 41 drives the camera 46 to move toward the workpiece 25 and take pictures of the workpiece 25 for inspection. This makes the process connection closer and helps to improve inspection efficiency.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A high-speed rotating dynamic contact angle measuring instrument, characterized in that: Includes a material loading module, a dripping module, and a measurement module; The material loading module includes a rotating base, a loading platform disposed on the rotating base, and a clamp disposed on the loading platform; the clamp's chuck holds the workpiece. The dripping module includes a first movable module, a mounting bracket disposed on the first movable module, and a dripping head disposed on the mounting bracket; the dripping head can drip liquid onto the workpiece. The measurement module includes a second moving module, a camera mounted on the second moving module, and a light source mounted on the side of the loading platform.

2. The high-speed rotating dynamic contact angle measuring instrument according to claim 1, characterized in that: An angle adjustment device is also provided between the rotating base and the loading platform; the angle adjustment device includes a first leveling module and a second leveling module; The first leveling module includes a first slider and a second slider, with a first adjustment ruler disposed between the first slider and the second slider; The second leveling module includes a third slider and a fourth slider, with a second adjustment ruler positioned between the third slider and the fourth slider.

3. The high-speed rotating dynamic contact angle measuring instrument according to claim 1, characterized in that: The first moving module includes a first lead screw servo device and a first sensor disposed on the side of the first lead screw servo device; a first trigger plate is disposed on the first slide of the first lead screw servo device; the first trigger plate can trigger the first sensor.

4. The high-speed rotating dynamic contact angle measuring instrument according to claim 1, characterized in that: The mounting bracket includes a first frame, a second frame, and a third leveling module; the third leveling module includes a fifth slider and a sixth slider, with a third adjusting ruler disposed between the fifth slider and the sixth slider; wherein, the fifth slider is disposed on the second frame; and the sixth slider is disposed on the first frame.

5. A high-speed rotating dynamic contact angle measuring instrument according to claim 4, characterized in that: The first frame is equipped with a laser displacement sensor; the laser displacement sensor can sense the workpiece.

6. A high-speed rotating dynamic contact angle measuring instrument according to claim 1, characterized in that: The second moving module is provided with a second height adjustment module; the camera is provided in the second height adjustment module; the second moving module includes a second lead screw servo device and a second sensor provided on the side of the second lead screw servo device; a second trigger plate is provided on the second slide of the second lead screw servo device; the second trigger plate can trigger the second sensor.

7. A high-speed rotating dynamic contact angle measuring instrument according to claim 1, characterized in that: The material loading module is mounted on the base plate; the dripping module is mounted on the top plate; a support rod is provided between the top plates; a reflector is provided on one side of the support rod, and the light source is located on the reflector.

8. A high-speed rotating dynamic contact angle measuring instrument according to claim 7, characterized in that: The dripping module also includes an injection module, which includes an injector and a push rod connected to the injector; the outlet of the injector is connected to the dripping head.

9. A high-speed rotating dynamic contact angle measuring instrument according to claim 8, characterized in that: The liquid injection module, material loading module, liquid dripping module, and measurement module are installed inside the cabinet, which has a door on the side. The bottom of the cabinet is equipped with casters, and the casters are equipped with adjustable support feet.

10. A high-speed rotating dynamic contact angle measuring instrument according to claim 8, characterized in that: The loading platform is equipped with at least three clamps at equal angles.

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