A fully automatic optical contact angle measuring instrument

Abstract

The utility model provides a full -automatic optical contact angle measuring apparatur relates to contact angle measuring apparatur technical field, include: injection briquet, the injection briquet is inserted in the inside of synchronous seat, and injection subassembly automatic ration point injection drop, can avoid the volume deviation of drop caused by manual operation, ensure that drop quantity precision is consistent, avoid the problem that drop is too much to flow or too few cannot detect, guarantee the initial condition stability of measurement, unify the drop contact area of different sample in contrast test, form starting point, improve image comparability, reduce data error, improve contact angle numerical reliability, the manual injection drop of current optical contact angle measuring apparatur needs, the difficult control liquid volume is easy to flow or cannot detect, the operation is complicated, the requirement of high proficiency, a plurality of contrast test needs to repeat manual operation, time -consuming and easy to influence data accuracy because of human difference, difficult to satisfy the problem of efficient and accurate detection demand.

Description

Technical Field

[0001] This utility model relates to the field of contact angle measuring instruments, and in particular to a fully automatic optical contact angle measuring instrument. Background Technology

[0002] Optical contact angle meters are mainly used to detect the contact angle between liquids and solid surfaces. They capture the morphology of droplets on solid surfaces through optical imaging systems and calculate the contact angle value using image analysis technology. This allows for the assessment of key properties of solid surfaces, such as hydrophilicity / hydrophobicity and surface energy. They are widely used in materials science, textiles, electronics, and medicine, helping researchers optimize material surface treatment processes, screen materials that meet specific performance requirements, and quickly detect product surface quality. They provide accurate and reliable surface performance data support for research and production in related fields, promoting the development of material applications and product quality control in various industries.

[0003] Existing optical contact angle measuring instruments still require manual operation when applying droplets on the measurement platform. Operators must hold a syringe or dropper to precisely control the liquid flow. This not only makes it difficult to consistently control the amount of droplets injected, but also easily leads to situations where too many droplets cause the liquid to flow onto the solid sample surface, damaging the preset measurement area, or too few droplets fail to drip due to surface tension, failing to form an effective detection pattern. The operation process is cumbersome, requires a high level of operator proficiency, and lacks flexibility. In addition, to ensure data reliability, 3-5 or even more control groups are usually set up for parallel measurements. Each control group test requires repeating the manual droplet application, which not only significantly increases the overall testing time but may also cause additional deviations between groups of data due to human differences in different operations, affecting the accuracy and consistency of the final measurement results. This makes it difficult to meet the needs of efficient and accurate detection and limits its practicality. Utility Model Content

[0004] This utility model relates to a fully automatic optical contact angle measuring instrument, which has an injection component. The combined use of the injection component and the measuring component can meet the requirements for contact angle measurement and achieve fully automatic measurement. The injection component has the function of automatically and quantitatively injecting droplets. This function can completely avoid the droplet volume deviation caused by hand tremors and experience differences during manual injection, ensuring that the amount of droplets injected each time is accurate and consistent. It avoids the problems of excessive droplets flowing and damaging the sample surface, or insufficient droplets failing to form an effective detection morphology. It ensures the stability of the initial measurement conditions from the source. The quantitative injection characteristic makes the droplet contact area and morphological starting height of different samples uniform in the same set of control tests. The optical images captured by the subsequent measuring component have stronger comparability, greatly reducing the data analysis error caused by the difference in droplet volume, improving the reliability of the final contact angle value, and is highly flexible and practical.

[0005] This utility model provides a fully automatic optical contact angle measuring instrument, specifically including: a measuring component, the measuring component including a mounting base, a lens lifting base, a platform lifting base and an injection lifting base, the lens lifting base, the platform lifting base and the injection lifting base are all fixedly installed on the top of the mounting base, the top of the lens lifting base is fixedly installed with a measuring lens, and the top of the platform lifting base is fixedly installed with a measuring platform, and the side of the lifting arm of the injection lifting base is provided with an injection component; The injection assembly includes a synchronizing seat, an injection block, a control rod, and a drive motor. The synchronizing seat is fixedly installed on the side of the lifting arm of the injection lifting seat, and the injection block is inserted into the interior of the synchronizing seat. The control rod is rotatably connected to the interior of the synchronizing seat, and the drive motor is fixedly installed at the bottom of the synchronizing seat.

[0006] Furthermore, the injection assembly also includes a grooved wheel mechanism, which consists of a control grooved wheel and a drive dial. The control grooved wheel is rotatably connected inside the synchronous seat, and the drive dial is rotatably connected inside the synchronous seat. The drive dial is also connected to the shaft of the drive motor via a transmission connection.

[0007] Furthermore, the bottom of the control groove wheel is provided with a drive gear, and the top of the control rod is provided with an injection gear, and the gear teeth of the injection gear and the drive gear mesh and drive each other.

[0008] Furthermore, the drive gear and the injection gear form a reduction gear mechanism, and the drive motor is a single-cycle, single-power-on type motor.

[0009] Furthermore, the control rod has threads on its outer surface, and the control rod is screwed into the inside of the injection block via the threaded rod.

[0010] Furthermore, the side of the synchronization seat is provided with an instrument slot, which is located directly below the outer block of the injection pressure block, and a syringe is installed inside the instrument slot.

[0011] This invention provides a fully automatic optical contact angle measuring instrument, which has the following advantages: The combined use of the injection and measurement components enables contact angle measurement and fully automated measurement. The injection component features automatic, quantitative droplet dispensing. This function completely eliminates droplet volume deviations caused by hand tremors and experience differences during manual dispensing, ensuring consistent and accurate droplet volume for each dispensing. This avoids issues such as excessive droplet flow damaging the sample surface or insufficient droplets failing to form an effective detection morphology, thus guaranteeing the stability of initial measurement conditions from the outset. The quantitative dispensing characteristic ensures uniform droplet contact area and morphological starting height for different samples in the same set of control tests. This results in stronger comparability of the optical images captured by the subsequent measurement component, significantly reducing data analysis errors caused by differences in droplet volume, improving the reliability of the final contact angle value, and enhancing the flexibility and practicality of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0013] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0014] In the attached diagram: Figure 1 A schematic diagram of the structure of this utility model is shown.

[0015] Figure 2 A schematic diagram of the internal structure of this utility model is shown.

[0016] Figure 3 This utility model is shown Figure 2 Enlarged structural diagram of part A in the middle.

[0017] Figure 4 A schematic diagram of the disassembled injection assembly of this utility model is shown.

[0018] Figure 5 This utility model is shown Figure 2 A schematic diagram of the structure at the bottom of the injection component.

[0019] List of reference numerals 1. Measuring components; 101. Mounting base; 102. Lens lifting base; 103. Platform lifting base; 104. Injection lifting base; 2. Injection assembly; 201. Synchronizing seat; 2011. Instrument slot; 202. Injection block; 203. Control lever; 2031. Injection gear; 204. Drive motor; 205. Control wheel; 2051. Drive gear; 206. Drive dial; 3. Syringe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please refer to Figures 1 to 5 Example 1: This utility model proposes a fully automatic optical contact angle measuring instrument, including: a measuring component 1, which includes a mounting base 101, a lens lifting base 102, a platform lifting base 103, and an injection lifting base 104. The lens lifting base 102, the platform lifting base 103, and the injection lifting base 104 are all fixedly installed on the top of the mounting base 101. A measuring lens is fixedly installed on the top of the lens lifting base 102, and a measuring platform is fixedly installed on the top of the platform lifting base 103. The specific structure and working principle of the lifting base are existing mature technologies and will not be described in detail here. An injection component 2 is provided on the side of the lifting arm of the injection lifting base 104. The injection assembly 2 includes a synchronizing seat 201, an injection block 202, a control lever 203, and a drive motor 204. The synchronizing seat 201 is fixedly installed on the side of the lifting arm of the injection lifting seat 104, and the injection block 202 is inserted into the inside of the synchronizing seat 201. The control lever 203 is rotatably connected to the inside of the synchronizing seat 201, and the drive motor 204 is fixedly installed at the bottom of the synchronizing seat 201.

[0022] The injection assembly 2 also includes a Geneva mechanism, which consists of a control Geneva 205 and a drive dial 206. The control Geneva 205 is rotatably connected inside the synchronous seat 201, and the drive dial 206 is rotatably connected inside the synchronous seat 201. The drive dial 206 is also connected to the shaft of the drive motor 204. The Geneva mechanism (also known as the Malta mechanism) is a common intermittent motion mechanism. Its core function is to accurately convert the continuous rotational motion of the driving member into the intermittent and periodic rotational motion of the driven member (Generatter). Its specific structure and working principle are existing mature technologies and will not be elaborated here.

[0023] The synchronization seat 201 has an instrument slot 2011 on its side, which is located directly below the outer block of the injection block 202. The syringe 3 is installed inside the instrument slot 2011. In use, the measuring component 1 can measure the contact angle between the droplet injected by the injection component 2 and the measuring platform. It is convenient and flexible to use. The lens lifting seat 102 can adjust the height of the measuring lens, the platform lifting seat 103 can adjust the height of the measuring platform, and the injection lifting seat 104 can drive the injection component 2 to lift and lower to realize the function of droplet injection. After adjusting the measuring lens and the measuring platform to a suitable position, the contact angle can be measured by the measuring lens after the droplet is injected. It is convenient and flexible to use.

[0024] The control wheel 205 has a drive gear 2051 at its bottom and an injection gear 2031 at its top. The injection gear 2031 and the drive gear 2051 mesh together to form a reduction gear mechanism. The drive motor 204 is a single-turn motor. In use, the injection assembly 2 has the function of automatically and quantitatively injecting liquid droplets. The operation is fast. When the drive motor 204 rotates, it can drive the drive dial 206 to rotate. When the drive dial 206 rotates, it can intermittently drive the control wheel 205 to rotate at a fixed angle. When the control wheel 205 rotates, the drive gear 2051 can drive the injection gear 2031 to drive the control lever. The control rod 203 rotates, and its external body is threaded. The control rod 203 is screwed into the injection block 202 through the thread. When the control rod 203 rotates, it can drive the injection block 202 to move through the thread. When the injection block 202 moves, it can press the plunger of the syringe 3 to realize the function of injecting droplets. Since the rotation angle of the control wheel 205 is fixed each time, the downward distance of the injection block 202 is also fixed each time, thus realizing the function of automatic and quantitative injection of droplets. The drive motor 204 is a single-turn motor with a single power-on, that is, the drive motor 204 can inject one droplet each time it is powered on. The number of times the drive motor 204 is powered on can be controlled to set up multiple control groups for measurement to ensure the accuracy of the measurement results. The working principle of this embodiment is as follows: The measuring component 1 can measure the contact angle between the droplet injected by the injection component 2 and the measuring platform, which is convenient and flexible to use. The lens lifting seat 102 can adjust the height of the measuring lens, the platform lifting seat 103 can adjust the height of the measuring platform, and the injection lifting seat 104 can drive the injection component 2 to lift and lower to realize the function of droplet injection. After adjusting the measuring lens and the measuring platform to a suitable position, the contact angle can be measured through the measuring lens after the droplet is injected. The injection component 2 has the function of automatic and quantitative droplet injection, and the operation is fast. When the drive motor 204 rotates, it can drive the drive dial 206 to rotate. When the drive dial 206 rotates, it can intermittently drive the control groove wheel 205 at a fixed angle. The control wheel 205 rotates, and when the control wheel 205 rotates, the drive gear 2051 drives the injection gear 2031 to rotate the control rod 203. When the control rod 203 rotates, it drives the injection block 202 to move through the rod thread. When the injection block 202 moves, it can press the pressure rod of the syringe 3 to realize the function of injecting droplets. Since the rotation angle of the control wheel 205 is fixed each time, the downward movement distance of the injection block 202 is also fixed, thus realizing the function of automatic and quantitative injection of droplets. The drive motor 204 is a single-turn motor with a single power-on, that is, the drive motor 204 can inject one droplet each time it is powered on. The number of times the drive motor 204 is powered on can be controlled to set up multiple control groups for measurement to ensure the accuracy of the measurement results.

Claims

1. A fully automatic optical contact angle measuring instrument, characterized in that, include: The measuring component (1) includes a mounting base (101), a lens lifting base (102), a platform lifting base (103), and an injection lifting base (104). The lens lifting base (102), the platform lifting base (103), and the injection lifting base (104) are all fixedly installed on the top of the mounting base (101). A measuring lens is fixedly installed on the top of the lens lifting base (102), and a measuring platform is fixedly installed on the top of the platform lifting base (103). An injection component (2) is provided on the side of the lifting arm of the injection lifting base (104). The injection assembly (2) includes a synchronizing seat (201), an injection block (202), a control rod (203), and a drive motor (204). The synchronizing seat (201) is fixedly installed on the side of the lifting arm of the injection lifting seat (104), and the injection block (202) is inserted into the inside of the synchronizing seat (201). The control rod (203) is rotatably connected to the inside of the synchronizing seat (201), and the drive motor (204) is fixedly installed at the bottom of the synchronizing seat (201).

2. The fully automatic optical contact angle measuring instrument according to claim 1, characterized in that, The injection assembly (2) also includes a Geneva mechanism, which consists of a control Geneva wheel (205) and a drive dial (206). The control Geneva wheel (205) is rotatably connected inside the synchronous seat (201), and the drive dial (206) is rotatably connected inside the synchronous seat (201). The drive dial (206) is also connected to the shaft of the drive motor (204).

3. The fully automatic optical contact angle measuring instrument according to claim 2, characterized in that, The bottom of the control groove wheel (205) is provided with a drive gear (2051), and the top of the control rod (203) is provided with an injection gear (2031), and the gear teeth of the injection gear (2031) and the drive gear (2051) mesh and drive.

4. The fully automatic optical contact angle measuring instrument according to claim 3, characterized in that, The drive gear (2051) and injection gear (2031) form a reduction gear mechanism, and the drive motor (204) is a single-turn motor that rotates once powered on.

5. A fully automatic optical contact angle measuring instrument according to claim 4, characterized in that, The control rod (203) has threads on its outer surface, and the control rod (203) is screwed into the inside of the injection block (202) through the thread.

6. The fully automatic optical contact angle measuring instrument according to claim 5, characterized in that, The side of the synchronization seat (201) is provided with an instrument slot (2011), and the instrument slot (2011) is located directly below the outer block of the injection block (202), and a syringe (3) is installed inside the instrument slot (2011).

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