A nano-type contact angle measuring instrument

Abstract

The utility model relates to the technical field of touch angle measuring instrument discloses a nano type contact angle measuring instrument, including the shell, the shell inside is provided with the adjusting lever, the shell inside is provided with the light source, the shell inside is provided with the protection subassembly, the shell inside fixedly connected with the camera lens, the shell top fixedly connected with three -dimensional platform, the three -dimensional platform inside is provided with stabilizing component, the protection subassembly includes the fender, the fender outer wall sliding connection in the shell inside, the fender inside is provided with the limit slot. In the utility model, through the drive of fender to the clamping plate and the limiting plate and cooperation spring, realize the sliding of clamping plate in the shell, thereby conveniently dismouting fender, protecting the inside light source, avoid damaging when not using, solved the problem that the existing light source lacks the protection device and is easy to produce abrasion and leads to the problem of not clear irradiation, improved the security of device protection.

Description

Technical Field

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

[0002] In materials science, surface engineering, and biomedicine, accurate measurement of the wettability of material surfaces is crucial, and a nanoscale contact angle meter is the core device for achieving this measurement. It captures images of the contact angle formed by a liquid on a solid material surface and calculates the contact angle value using a specific algorithm, providing key data support for research on material surface modification, coating performance evaluation, and biocompatibility analysis. With the rapid development of nanotechnology, higher demands are placed on the accuracy, stability, and safety of the measuring instrument. The normal operation of its internal core components directly affects the reliability of the measurement results, making it irreplaceable in various scientific research experiments and industrial production testing.

[0003] Existing nanoscale contact angle measuring instruments typically consist of an optical imaging system, a platform, a liquid dispensing device, and a data processing unit. The technical principle involves using a high-definition camera to capture images of the liquid droplet's morphology after it falls onto the surface of the object being measured. Image analysis software identifies the droplet's outline, and the contact angle is calculated using theoretical models such as the Young-Laplace equation. The platform is usually manually adjusted to position the object, the liquid dispensing device uses a micro-injection pump to control the droplet volume, and the optical imaging system, composed of a light source, lens, and image sensor, works together to measure the contact angle, meeting basic measurement requirements.

[0004] However, existing nanoscale contact angle measuring instruments lack effective protection for their light source components. When the instrument is not in use, the light source is exposed to the external environment for extended periods, making it susceptible to dust accumulation, accidental impacts, or corrosion from external pollutants. This leads to wear and tear, decreased light transmittance, and other problems. This not only shortens the lifespan of the light source but also affects the optical imaging system's ability to clearly capture the droplet profile during subsequent measurements due to unstable light emission or poor light quality. Consequently, the contact angle measurement results become inaccurate, failing to meet the demands of high-precision measurements. Therefore, a nanoscale contact angle measuring instrument is proposed to address these issues. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a nano-type contact angle measuring instrument, which aims to improve the problem of unclear illumination caused by the lack of a protective device for the light source in the prior art, which is prone to wear and tear.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A nano-type contact angle measuring instrument includes a housing, an adjustment rod disposed inside the housing, a light source disposed inside the housing, a protective component disposed inside the housing, a lens fixedly connected inside the housing, a three-dimensional platform fixedly connected to the top of the housing, and a stabilizing component disposed inside the three-dimensional platform;

[0008] The protective assembly includes a protective plate, the outer wall of which is slidably connected to the inside of the outer shell. A limiting groove is formed inside the protective plate. A retaining plate is slidably connected inside the protective plate. The outer wall of the retaining plate is slidably connected to the inside of the outer shell. A limiting plate is fixedly connected to one side of the retaining plate. The outer wall of the limiting plate is slidably connected to the inside of the limiting groove. A spring is provided inside the protective plate. One end of the spring is fixedly connected to the inner wall of the limiting groove, and the other end of the spring is fixedly connected to the outer wall of the limiting plate.

[0009] As a further description of the above technical solution:

[0010] The stabilizing component includes a clamp, the bottom of which is slidably connected to the top of the three-dimensional platform.

[0011] As a further description of the above technical solution:

[0012] A motor is fixedly connected to the bottom of the three-dimensional platform, and a rotating rod is fixedly connected to the output end of the motor.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the rotating rod is slidably connected to the inside of the three-dimensional platform, and rotating wheels are rotatably connected to both sides of the rotating rod.

[0015] As a further description of the above technical solution:

[0016] A transmission rod is fixedly connected to the outer wall of the wheel, and a connecting rod is fixedly connected to one side of the clamp.

[0017] As a further description of the above technical solution:

[0018] A sliding plate is fixedly connected to the other side of the connecting rod, and the other side of the transmission rod is rotatably connected to the outer wall of the sliding plate.

[0019] As a further description of the above technical solution:

[0020] The three-dimensional platform has a limiting groove inside, and the outer wall of the slide plate is slidably connected to the limiting groove.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the card plate achieves its movement function by pulling the protective plate. When the protective plate is pulled, the card plate and the limiting plate are driven by the protective plate and cooperate with the spring to slide the card plate inside the shell, thereby facilitating the disassembly and assembly of the protective plate, protecting the internal light source and preventing damage when not in use. This solves the problem that the existing light source lacks a protective device and is prone to wear, resulting in unclear illumination, and improves the safety of the device protection.

[0023] In this invention, the fixture moves by starting a motor. When the motor is started, it drives the rotating rod and transmission rod, and works in conjunction with the connecting rod to slide the fixture on the top of the three-dimensional platform, thereby maintaining the stability of the object being measured and making the measurement more accurate. This solves the problem of not being able to quickly maintain the stability of objects of different specifications and improves the stability of the measurement. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a nano-type contact angle measuring instrument proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the adjusting rod of a nano-type contact angle measuring instrument proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the protective plate of a nano-type contact angle measuring instrument proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the fixture for a nano-type contact angle measuring instrument proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of a three-dimensional platform for a nano-type contact angle measuring instrument proposed in this utility model.

[0029] Legend:

[0030] 1. Outer shell; 2. Protective plate; 3. Adjusting rod; 4. 3D platform; 5. Lens; 6. Light source; 7. Clamping plate; 8. Spring; 9. Limiting plate; 10. Limiting groove; 11. Motor; 12. Connecting rod; 13. Fixture; 14. Slide plate; 15. Rotating rod; 16. Rotating wheel; 17. Transmission rod; 18. Limiting groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a nano-type contact angle measuring instrument, including a housing 1. The housing 1 has a hollow cuboid structure and is made of aerospace-grade aluminum alloy. This material has high strength, low density, and good corrosion resistance, providing stable protection for the precision components inside the instrument while reducing the overall weight of the instrument, facilitating movement and placement. This is common knowledge and will not be elaborated further here. An adjusting rod 3 is provided inside the housing 1. The adjusting rod 3 is used to adjust and control the height and position of the connected dropper, thereby accurately adjusting the drip angle and drip point of the measured liquid. This avoids the impact of drip position deviation on the contact angle measurement accuracy. For example, when measuring thin film samples, the adjusting rod 3 can be used to align the dropper with the center area of ​​the sample to ensure that the droplet falls accurately at the measurement position. A light source 6 is provided inside the housing 1. The light source 6 uses high-brightness LED cold light, which has the characteristics of stable light emission, low heat, and long service life, and is used to provide uniform light for contact angle measurement. A stable lighting environment is essential to avoid the temperature changes on the surface of the measured object caused by heat generation, which would affect the wetting state of the liquid on the surface of the measured object. This is common knowledge and will not be elaborated further here. The housing 1 has a protective component inside, and a lens 5 is fixedly connected inside the housing 1. The lens 5 is connected to the inner wall of the housing 1 by bolts. The lens 5 is made of high-transmittance optical glass with an anti-reflection coating on its surface. It is used to clearly capture the morphological image of the droplets on the surface of the measured object and transmit the image to the subsequent data processing unit. The design of the anti-reflection coating can reduce light reflection loss and improve image clarity. For example, when measuring tiny droplets, it can more accurately identify the edge of the droplet contour. A three-dimensional platform 4 is fixedly connected to the top of the housing 1. The three-dimensional platform 4 is made of stainless steel and has good flatness and stability. It is used to support the sample to be measured and ensure that the sample is in a horizontal state during the measurement process. This avoids abnormal droplet morphology due to platform tilt, which would affect the measurement results. The three-dimensional platform 4 has a stabilizing component inside.

[0033] The protective assembly includes a protective plate 2, which is a rectangular flat plate made of transparent acrylic material. This material has good light transmittance and wear resistance, ensuring that it does not affect the transmission of light from the light source 6 during instrument use, while also protecting against external impacts. This is common knowledge and will not be elaborated further here. The outer wall of the protective plate 2 is slidably connected to the inside of the outer shell 1. The protective plate 2 slides back and forth in conjunction with the groove on the inner wall of the outer shell 1, achieving the effect of opening the protection when the instrument is in use and closing the protection when not in use. For example, before measurement, the protective plate 2 can be slid open to expose the light source 6 and lens 5; after measurement, the protective plate 2 can be slid closed for protection. The protective plate 2 has a limiting groove 10 inside, and a retaining plate 7 is slidably connected inside the protective plate 2. The retaining plate 7 is a wedge-shaped block structure with a surface designed as a bevel at a specific angle. It is used to exert a squeezing effect on the inner wall of the outer shell 1 when the protective plate 2 moves, thereby realizing the extension and retraction of the retaining plate 7, and thus completing the limiting and unlocking of the protective plate 2. The outer wall of the retaining plate 7 is slidably connected to the inside of the outer shell 1. A limiting plate 9 is fixedly connected to one side of the retaining plate 7. The outer wall of the limiting plate 9 is slidably connected to the inside of the limiting groove 10. A spring 8 is provided inside the protective plate 2. One end of the spring 8 is fixedly connected to the inner wall of the limiting groove 10, and the other end of the spring 8 is fixedly connected to the outer wall of the limiting plate 9.

[0034] Reference Figure 1 , Figure 4 and Figure 5The stabilizing component includes a clamp 13, which consists of two arc-shaped clamping arms and a connecting base. Silicone anti-slip pads are attached to the inner sides of the clamping arms. The silicone material has good flexibility and anti-slip properties, used to increase the friction between the clamping arm and the surface of the object being measured, while preventing scratches or damage to the object's surface caused by excessively hard clamping arms. The bottom of the clamp 13 is slidably connected to the top of the three-dimensional platform 4. A motor 11 is fixedly connected to the bottom of the three-dimensional platform 4, and the three-dimensional platform 4 and the motor 11 are connected by bolts. The motor 11 is a stepper motor, specifically a 17HS4401 model manufactured by Sanyo Electric Co., Ltd. of Japan. This motor 11 provides precise power output for the movement of the stabilizing component and can achieve precise rotation angle control of the rotating rod 15 through control pulse signals, thereby adjusting the clamping force and movement distance of the clamp 13. This is a feature of existing technology. The output end of the motor 11 is fixedly connected to a rotating rod 15. The outer wall of the rotating rod 15 is slidably connected to the inside of the three-dimensional platform 4. Rotating wheels 16 are rotatably connected to both sides of the rotating rod 15. A transmission rod 17 is fixedly connected to the outer wall of the rotating wheel 16. The rotating wheel 16 and the transmission rod 17 are connected by welding. The transmission rod 17 is a cuboid metal rod structure made of aluminum alloy. Aluminum alloy is both lightweight and strong, which can reduce the overall weight of the stabilizing component while transmitting power, and avoid excessive load on the three-dimensional platform 4. It is used to transmit the power transmitted by the rotating wheel 16 to the slide plate 14, which drives the slide plate 14 to slide in the limiting groove 18. A connecting rod 12 is fixedly connected to one side of the clamp 13. The slide plate 14 is fixedly connected to the other side of the connecting rod 12. The other side of the transmission rod 17 is rotatably connected to the outer wall of the slide plate 14. The three-dimensional platform 4 has a limiting groove 18 inside, and the outer wall of the slide plate 14 is slidably connected to the inside of the limiting groove 18.

[0035] Working Principle: When measuring the object, the operator first inserts their hand into the pre-set groove inside the protective plate 2, applying a pulling force through the groove to move the protective plate 2 horizontally along the opening direction of the outer shell 1. Because the surface of the clamping plate 7 is designed with a specific angled structure, during the movement of the protective plate 2, the inner wall of the groove will exert a squeezing effect on the inclined surface of the clamping plate 7, thus naturally pushing the clamping plate 7 into the outer shell 1 as it is continuously pulled. Next, the clamping plate 7 will simultaneously drive the fixedly connected limiting plate 9, causing the limiting plate 9 to move smoothly along the channel direction within the limiting groove 10 on the inner wall of the outer shell 1. During this process, the limiting plate 9 will exert a squeezing force on the spring 8 connected to one side, causing the spring 8 to gradually compress and deform until the clamping plate 7 completely disengages from the limiting of the protective plate 2, at which point the protective plate 2 can be completely removed from the outer shell 1. At this point, the light source 6 inside the outer shell 1 is no longer blocked and can emit light normally for illumination, providing a stable optical environment for subsequent measurements.

[0036] Then, the motor 11 at the bottom of the device is started. After the motor 11 is powered on, it outputs torque, which drives the rotating rod 15 connected to it to rotate clockwise around its own axis. When the rotating rod 15 rotates, the rotating wheel 16 installed at its end will rotate synchronously. During the rotation, the rotating wheel 16 forms a rolling engagement with the end of the transmission rod 17, thereby driving the transmission rod 17 to move linearly in the horizontal direction. When the transmission rod 17 moves, it pushes the slide plate 14 connected to it, so that the slide plate 14 slides smoothly along the groove trajectory inside the limiting groove 18 on the side of the three-dimensional platform 4. The sliding of the slide plate 14 will cause the connecting rod 12, which is hinged to it, to deflect at an angle. The connecting rod 12 further pulls the two clamping arms of the clamp 13, so that the clamp 13 gradually opens to a suitable angle. At this time, the operator can place the sample to be measured stably at the top center of the three-dimensional platform 4.

[0037] After placement, motor 11 is restarted, causing it to drive rotating rod 15 to rotate in the opposite direction. Through the reverse linkage of rotating rod 15, rotating wheel 16, and transmission rod 17, the sliding plate 14 is pulled to slide in the limiting groove 18 in the opposite direction. This, in turn, drives connecting rod 12 to pull the clamping arm of clamp 13 inward until clamp 13 is tightly attached to the outer wall of the object being measured, firmly clamping and fixing the object to ensure its stability during measurement. Afterward, the operator manually rotates the adjusting rod 3 on the side of the device according to the measurement requirements. Through the dropper connected to the outer wall of adjusting rod 3, an appropriate amount of measuring liquid is precisely added to the surface of the object. Once the liquid has formed a stable droplet on the surface of the object, the contact angle is measured using the light source 6 inside the outer casing 1 in conjunction with the optical system. After the measurement is completed, the operator reinstalls the previously removed protective plate 2 back into the opening of the outer casing 1 to effectively protect the internal light source 6 and optical components, completing the entire measurement process.

Claims

1. A nanotouchmeter comprising a housing (1), characterized in that: An adjustment rod (3) is provided inside the outer shell (1), a light source (6) is provided inside the outer shell (1), a protective component is provided inside the outer shell (1), a lens (5) is fixedly connected inside the outer shell (1), a three-dimensional platform (4) is fixedly connected to the top of the outer shell (1), and a stabilizing component is provided inside the three-dimensional platform (4). The protective assembly includes a protective plate (2), the outer wall of which is slidably connected to the inside of the outer shell (1). A limiting groove (10) is opened inside the protective plate (2). A retaining plate (7) is slidably connected inside the protective plate (2). The outer wall of the retaining plate (7) is slidably connected to the inside of the outer shell (1). A limiting plate (9) is fixedly connected to one side of the retaining plate (7). The outer wall of the limiting plate (9) is slidably connected to the inside of the limiting groove (10). A spring (8) is provided inside the protective plate (2). One end of the spring (8) is fixedly connected to the inner wall of the limiting groove (10), and the other end of the spring (8) is fixedly connected to the outer wall of the limiting plate (9).

2. The nano-type contact angle measuring instrument according to claim 1, wherein: The stabilizing component includes a clamp (13) whose bottom is slidably connected to the top of the three-dimensional platform (4).

3. The nano-type contact angle measuring instrument according to claim 2, characterized in that: The bottom of the three-dimensional platform (4) is fixedly connected to a motor (11), and the output end of the motor (11) is fixedly connected to a rotating rod (15).

4. The nano-type contact angle measuring instrument according to claim 3, characterized in that: The outer wall of the rotating rod (15) is slidably connected to the interior of the three-dimensional platform (4), and rotating wheels (16) are rotatably connected to both sides of the rotating rod (15).

5. A nano-type contact angle measuring instrument according to claim 4, characterized in that: A transmission rod (17) is fixedly connected to the outer wall of the wheel (16), and a connecting rod (12) is fixedly connected to one side of the clamp (13).

6. The nano-type contact angle measuring instrument according to claim 5, characterized in that: The connecting rod (12) is fixedly connected to the slide plate (14) on the other side, and the transmission rod (17) is rotatably connected to the outer wall of the slide plate (14) on the other side.

7. A nano-type contact angle measuring instrument according to claim 6, characterized in that: The three-dimensional platform (4) has a limiting groove (18) inside, and the outer wall of the slide plate (14) is slidably connected to the limiting groove (18).

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