Contact angle measuring instrument capable of being adjusted in multiple directions
By introducing liquid injection adjustment, sample placement stage adjustment, and imaging adjustment components into the contact angle measuring instrument, the problem that existing instruments cannot be adjusted simultaneously is solved, enabling rapid alignment of the liquid injection device, sample placement stage, and camera, thereby improving measurement efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN POLYTECHNIC
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-15
AI Technical Summary
Existing contact angle measuring instruments lack the ability to simultaneously adjust the liquid injection device, sample placement stage, and image acquisition device, resulting in inconvenience in use and low measurement efficiency.
A multi-directional adjustable contact angle measuring instrument was designed, comprising an injection adjustment component, a placement stage adjustment component, and an imaging adjustment component, which can adjust the position and angle of the injection device, the sample placement stage, and the camera respectively to achieve rapid alignment.
This improves the ease of operation and measurement efficiency of the contact angle measuring instrument, meets the diverse needs of users, and enhances measurement accuracy and practicality.
Smart Images
Figure CN224247540U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of contact angle measuring instruments, specifically to a contact angle measuring instrument that can be adjusted in multiple directions. Background Technology
[0002] The contact angle is the angle formed at the solid-liquid-gas interface point on a solid horizontal plane when a liquid droplet is placed there, with the liquid phase sandwiched between the two tangents of the gas-liquid interface and the solid-liquid interface. A contact angle meter is mainly used to measure the contact angle of a liquid on a solid, that is, the wettability of a liquid on a solid, and can measure the contact angle of various liquids on various materials.
[0003] A contact angle measuring instrument mainly consists of a liquid injection device, a sample stage, and an image acquisition device. During measurement, the sample is first fixed on the sample stage, and then liquid is dripped onto the sample through the injection device. The image acquisition device then captures the contact image between the droplet and the sample, thereby obtaining the corresponding contact angle data to determine the wetting performance of the droplet on the sample. Some existing contact angle measuring instruments allow adjustment of the image acquisition device's position to align it with the sample on the sample stage; others allow adjustment of the sample stage's position to align it with both the image acquisition device and the injection device. However, currently, there is a lack of contact angle measuring instruments on the market that allow simultaneous adjustment of the injection device, sample stage, and image acquisition device. Furthermore, the adjustment methods of individual components in existing contact angle measuring instruments are insufficient; for example, the sample stage can only be adjusted forward, backward, left, and right, but not vertically. Therefore, existing contact angle measuring instruments still present many inconveniences during use, preventing users from freely adjusting them as needed and affecting measurement efficiency. Utility Model Content
[0004] To address some or all of the problems existing in the prior art, this utility model provides a multi-directional adjustable contact angle measuring instrument, including a base. The base is equipped with a liquid injection device, a sample placement stage, and a camera. The liquid injection device is located above the sample placement stage, and the camera is located to one side of the sample placement stage. The sample placement stage is used to place samples and is equipped with a temperature control component for adjusting the temperature of the sample placement stage. The base also includes a liquid injection adjustment component, a placement stage adjustment component, and an imaging adjustment component. The liquid injection adjustment component adjusts the left-right movement of the liquid injection device on the base. The placement stage adjustment component adjusts the up-down, left-right, and forward-backward movement of the sample placement stage on the base. The imaging adjustment component adjusts the forward-backward movement and vertical rotation / swing of the camera on the base.
[0005] As a further improvement of this utility model, the placement platform adjustment assembly includes a mounting base, which is detachably connected to the base. The mounting base is provided with a front and rear module of the placement platform, and a left and right module of the placement platform is provided on the output end of the front and rear module of the placement platform. A lifting module of the placement platform is provided on the output end of the left and right module of the placement platform, and the sample placement platform is connected to the output end of the lifting module of the placement platform.
[0006] As a further improvement of this utility model, the left and right modules of the placement platform include module fixing seats, which are connected to the output ends of the front and rear modules of the placement platform. The module fixing seats are provided with left and right adjustment guide rails and left and right adjustment screws. The left and right adjustment screws are rotatably connected to the module fixing seats. One end of the left and right adjustment screws is provided with a left and right adjustment handwheel. A left and right adjustment slider is sleeved on the left and right adjustment screws. The left and right adjustment sliders are slidably engaged with the left and right adjustment guide rails. The lifting module of the placement platform is connected to the left and right adjustment sliders.
[0007] As a further improvement of this utility model, the liquid injection device includes a liquid injection lifting assembly and a liquid dispensing assembly. The liquid injection lifting assembly is connected to the output end of the liquid injection regulating assembly, and the liquid dispensing assembly is connected to the output end of the liquid injection lifting assembly. The liquid injection lifting assembly is used to drive the liquid dispensing assembly to move up and down.
[0008] As a further improvement of this utility model, the liquid dispensing assembly includes a liquid dispensing mounting base, on which a liquid injection pump and a liquid storage tube are provided. The liquid storage tube is detachably snapped into the liquid dispensing mounting base. A liquid dispensing needle tube is provided at the lower end of the liquid storage tube. An injection rod is provided at the output end of the liquid injection pump. The liquid injection pump can drive the injection rod to extend into or out of the liquid storage tube.
[0009] As a further improvement of this utility model, the imaging adjustment assembly includes an adjustment fixing base connected to the base, an imaging swing module on the adjustment fixing base, an imaging front and rear module on the output end of the imaging swing module, and the camera connected to the output end of the imaging front and rear module.
[0010] As a further improvement of this utility model, the camera is provided with an output connector for connecting an external control device, and the base is provided with a power connector for connecting an external power source.
[0011] As a further improvement of this utility model, the base is provided with a supplementary light, which is located on one side of the sample placement stage and is used to illuminate the sample on the sample placement stage.
[0012] As a further improvement of this utility model, the base is provided with a light source switch and a brightness adjustment switch. The light source switch is used to turn the fill light on or off, and the brightness adjustment switch is used to adjust the brightness of the fill light.
[0013] As a further improvement of this utility model, the liquid injection device, camera, liquid injection adjustment component, placement platform adjustment component, imaging adjustment component and supplementary light are respectively fitted with protective covers, and the protective covers are fixedly connected to the base.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This invention enables simultaneous adjustment of the injection device, sample placement stage, and camera, thereby improving the operational convenience of the contact angle measuring instrument, meeting diverse user needs, and enhancing measurement efficiency. In specific use, the injection adjustment component allows for left-right movement of the injection device on the base, enabling rapid alignment with the sample placement stage. The placement stage adjustment component allows for vertical, horizontal, and forward / backward movement of the sample placement stage on the base, ensuring rapid alignment of the sample with the injection device and camera. The imaging adjustment component allows for forward / backward movement and vertical rotation of the camera on the base, enabling rapid alignment with the sample placement stage. In practical use, users can operate the system as needed to achieve rapid alignment of the injection device, sample placement stage, and camera, thus improving efficiency. Attached Figure Description
[0016] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the external structure of an embodiment of this utility model;
[0018] Figure 2 This is a schematic diagram of the external structure from another perspective of an embodiment of the present invention;
[0019] Figure 3 This is a schematic diagram of the internal structure of an embodiment of this utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the left and right modules of the placement platform in an embodiment of this utility model;
[0021] Figure 5 This is a schematic diagram of the liquid injection device in an embodiment of this utility model;
[0022] Figure 6 This is a schematic diagram of the imaging adjustment component in an embodiment of the present invention. Detailed Implementation
[0023] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.
[0024] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.
[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0026] like Figure 1-6 As shown, a multi-directional adjustable contact angle measuring instrument includes a base 1, on which a liquid injection device 2, a sample placement stage 3, and a camera 4 are mounted. The liquid injection device 2 is located above the sample placement stage 3 and is used to inject liquid droplets into the sample on the sample placement stage 3. The camera 4 is located on one side of the sample placement stage 3 and is used to acquire contact image information between the liquid droplets and the sample placement stage 3. The sample placement stage 3 is used to place the sample. A temperature control component 5 is provided on the sample placement stage 3 to adjust the temperature of the sample placement stage 3, thereby meeting the measurement requirements of different temperature environments. The temperature control component 5 is equipped with heating and cooling modules. Through an external control system, the operation of the temperature control component 5 can be controlled to heat or cool the sample on the sample placement stage 3, meeting the measurement requirements of simulating different temperature environments. During operation, the sample is placed on the sample placement stage 3, and the sample is heated or cooled by the temperature control component 5 according to the measurement requirements. Then, liquid droplets are injected into the sample through the liquid injection device 2, and the contact between the liquid droplets and the sample is observed by the camera 4, thereby measuring the corresponding contact angle.
[0027] The base 1 is also equipped with an injection adjustment assembly 6, a placement stage adjustment assembly 7, and an imaging adjustment assembly 8. The injection adjustment assembly 6 is used to adjust the left-right movement of the injection device 2 on the base 1; the placement stage adjustment assembly 7 is used to adjust the up-down, left-right, and back-forward movement of the sample placement stage 3 on the base 1; and the imaging adjustment assembly 8 is used to adjust the back-forward movement and up-down rotation of the camera 4 on the base 1. During measurement, the injection adjustment assembly 6 can adjust the left-right movement of the injection device 2 on the base 1, allowing the injection device 2 to quickly align with the sample placement stage 3; the placement stage adjustment assembly 7 can adjust the up-down, left-right, and back-forward movement of the sample placement stage on the base 1, allowing the sample on the sample placement stage 3 to quickly align with the injection device 2 and the camera 4; and the imaging adjustment assembly 8 can adjust the back-forward movement and up-down rotation of the camera 4 on the base 1, allowing the camera 4 to quickly align with the sample placement stage 3. In actual use, the user can operate the assembly as needed to quickly align the injection device 2, sample placement stage 3, and camera 4, improving efficiency. This contact angle measuring instrument can simultaneously adjust the liquid injection device 2, the sample placement stage, and the camera 4, improving the ease of operation of the contact angle measuring instrument, meeting the diverse needs of users, and improving measurement efficiency.
[0028] A supplementary light 9 is also installed on the base 1. The supplementary light 9 is located on one side of the sample placement stage 3 and is used to illuminate the sample on the sample placement stage 3. By illuminating the sample on the sample placement stage 3 with the supplementary light 9, the camera 4 can easily obtain a clear image of the droplet contacting the sample, thus improving the accuracy of the measurement. The base 1 is equipped with a light source switch 10 and a brightness adjustment switch 11. The light source switch 10 is used to turn the supplementary light 9 on or off, and the brightness adjustment switch 11 is used to adjust the brightness of the supplementary light 9. Pressing the light source switch 10 controls the on or off of the supplementary light 9, and rotating the brightness adjustment switch 11 adjusts the brightness of the supplementary light 9, thereby meeting the measurement needs under different ambient light conditions and improving practicality.
[0029] The camera 4 is equipped with an output connector 12, which is used to connect an external control device. This external control device facilitates the transmission of images captured by the camera 4 and also allows for the control of the contact angle measuring instrument via preset control programs. For example, the external control device can control the dispensing of liquid from the injection device 2. The base 1 is equipped with a power connector 13, which is used to connect an external power source to power the contact angle measuring instrument.
[0030] In this embodiment, protective covers 14 are respectively fitted around the liquid injection device 2, camera 4, liquid injection adjustment component 6, placement stage adjustment component 7, imaging adjustment component 8, and supplementary light 9. The protective covers 14 are fixedly connected to the base 1 by screws. By setting the protective covers 14, the liquid injection device 2, camera 4, liquid injection adjustment component 6, placement stage adjustment component 7, imaging adjustment component 8, and supplementary light 9 can be encapsulated inside the base 1. On the one hand, this improves the aesthetic appearance of the contact angle measuring instrument, and on the other hand, it reduces the entry of dust and other foreign objects into the contact angle measuring instrument, thus extending its service life.
[0031] like Figure 3 As shown, the placement stage adjustment assembly 7 includes a mounting base 71, which is detachably connected to the base 1 via screws. This detachable connection facilitates the replacement of the placement stage adjustment assembly 7, allowing for the use of larger or smaller components to meet different application needs and improve versatility. The mounting base 71 is equipped with a front-to-back module 72, and the output end of the front-to-back module 72 is equipped with a left-to-right module 73. The output end of the left-to-right module 73 is equipped with a lifting module 74, and the sample placement stage 3 is connected to the output end of the lifting module 74. During use, the front-to-back module 72 allows for the adjustment of the left-to-right module 73, the lifting module 74, and the sample placement stage 3's forward and backward movement; the left-to-right module 73 allows for the adjustment of the lifting module 74 and the sample placement stage 3's left-to-right movement; and the lifting module 74 allows for the adjustment of the sample placement stage 3's lifting movement. Therefore, the cooperation of the front and rear modules 72, the left and right modules 73, and the lifting module 74 of the placement platform allows for the free movement of the sample placement platform 3 in three-dimensional space, improving the convenience of adjustment.
[0032] Specifically, such as Figure 4 As shown, the left and right modules 73 of the placement platform include a module fixing base 731, which is connected to the output end of the front and rear modules 72 of the placement platform. The module fixing base 731 is provided with an adjusting guide rail 732 and an adjusting screw 733. The adjusting screw 733 is rotatably connected to the module fixing base 731. One end of the adjusting screw 733 is provided with an adjusting handwheel 734. An adjusting slider 735 is sleeved on the adjusting screw 733 and is slidably engaged with the adjusting guide rail 732. The lifting module 74 of the placement platform is fixedly connected to the adjusting slider 735. When it is necessary to adjust the left and right movement of the sample placement platform 3, rotating the adjusting handwheel 734 can drive the adjusting screw 733 to rotate. The rotation of the adjusting screw 733 can drive the adjusting slider 735 to slide on the adjusting guide rail 732, thereby driving the lifting module 74 of the placement platform and the sample placement platform 3 to move left and right, thus achieving the purpose of adjusting the left and right movement of the sample placement platform 3.
[0033] The front and rear modules 72 and the lifting module 74 of the placement platform have the same structure as the left and right modules 73 of the placement platform, all of which adopt a lead screw and slider structure. Their specific structures will not be described in detail herein. In other embodiments, the front and rear modules 72, the left and right modules 73, and the lifting module 74 of the placement platform may also adopt other structures or devices capable of adjusting linear motion; the present invention does not limit their structures.
[0034] like Figure 5 As shown, the liquid injection device 2 includes a liquid injection lifting assembly 21 and a liquid dispensing assembly 22. The liquid injection lifting assembly 21 is fixedly connected to the output end of the liquid injection adjustment assembly 6, and the liquid dispensing assembly 22 is connected to the output end of the liquid injection lifting assembly 21. The liquid injection lifting assembly 21 can drive the liquid dispensing assembly 22 to move up and down. The liquid dispensing assembly 22 is used to hold the measuring liquid and can also drip the liquid onto the sample on the sample placement stage 3. The structure of the liquid injection adjustment assembly 6 is the same as that of the left and right modules 73 of the placement stage, both of which adopt a screw and slider structure. The liquid injection adjustment assembly 6 can adjust the left and right movement of the base 1 of the liquid injection lifting assembly 21 and the liquid dispensing assembly 22. Before measurement, the liquid is first filled into the liquid dispensing assembly 22. During measurement, after the position is adjusted by the liquid injection adjustment assembly 6, the liquid injection lifting assembly 21 drives the liquid dispensing assembly 22 to descend, so that the liquid dispensing assembly 22 descends to a height that matches the sample on the sample placement stage 3. Then, the liquid is output through the liquid dispensing assembly 22 and dripped onto the sample.
[0035] The liquid injection lifting assembly 21 adopts the existing motor screw module, and its structure will not be described in detail here. In other embodiments, the liquid injection lifting assembly 21 may also adopt other devices or structures that can drive the liquid dispensing assembly 22 to move up and down, such as a cylinder structure, etc., and this utility model does not limit this.
[0036] In this embodiment, the liquid dispensing assembly 22 includes a liquid dispensing mounting base 221, which is fixedly connected to the output end of the liquid injection lifting assembly 21. The liquid dispensing mounting base 221 is equipped with a liquid injection pump 222 and a liquid storage tube 223. The liquid storage tube 223 is detachably snapped into the liquid dispensing mounting base 221. The liquid storage tube 223 is used to hold the measuring liquid. The detachable connection between the liquid storage tube 223 and the liquid dispensing mounting base 221 facilitates the removal of the liquid storage tube 223 from the liquid dispensing mounting base 221, thereby allowing for convenient adjustment of the measuring liquid. A liquid dispensing needle tube 224 is provided at the lower end of the liquid storage tube 223. An injection rod 225 is provided at the output end of the liquid injection pump 222, which can drive the injection rod 225 to extend into or out of the liquid storage tube 223. In operation, when the liquid injection lifting assembly 21 drives the liquid outlet mounting base 221 to descend, the liquid outlet needle 224 descends to a height that matches the sample on the sample placement stage 3. Then, the liquid injection pump 222 drives the injection rod 225 to extend into the liquid storage tube 223. The injection rod 225 squeezes the liquid in the liquid storage tube 223 out of the liquid outlet needle 224, thus dripping the liquid onto the sample on the sample placement stage 3, achieving the dripping function. When the liquid in the liquid storage tube 223 is used up, the liquid injection pump 222 drives the injection rod 225 to extend out of the liquid storage tube 223. The liquid storage tube 223 is then removed from the liquid outlet mounting base 221, and after the liquid storage tube 223 is filled with measuring liquid, it is reinstalled onto the liquid outlet mounting base 221.
[0037] like Figure 6 As shown, the imaging adjustment assembly 8 includes an adjustment base 81, which is fixedly mounted on the base 1. An imaging swing module 82 is mounted on the adjustment base 81, and an imaging front-to-back module 83 is mounted on the output end of the imaging swing module 82. The camera 4 is fixedly mounted on the output end of the imaging front-to-back module 83. When adjustment is required, the imaging front-to-back module 83 can be used to adjust the camera 4 to move back and forth, and the imaging swing module 82 can be used to drive the imaging front-to-back module 83 and the camera 4 to rotate and swing up and down.
[0038] The imaging front and rear modules 83 have the same structure as the left and right modules 73 of the placement stage, and their structure will not be described in detail here. The imaging swing module 82 includes a swing base 821 and a swing upper slider 822. The upper end face of the swing base 821 is arc-shaped, and the lower end face of the swing upper slider 822 is adapted to the shape of the upper end face of the swing base 821, and the swing upper slider 822 is slidably engaged with the swing base 821. The swing base 821 is provided with a rotating adjustment screw 823. One end of the rotating adjustment screw 823 extends into the swing base 821 and is connected to the swing upper slider 822. Rotating the rotating adjustment screw 823 can drive the swing upper slider 822 to slide on the swing base 821. Due to the arc surface fit between the swing base 821 and the swing upper slider 822, the swing upper slider 822 will rotate up and down during the sliding process on the swing base 821, thereby driving the swing front and rear modules and the camera 4 to rotate up and down, thereby achieving the purpose of adjusting the orientation height of the camera 4.
[0039] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.
Claims
1. A contact angle measuring instrument adjustable in multiple directions, characterized in that: The device includes a base, on which a liquid injection device, a sample placement platform, and a camera are provided. The liquid injection device is located above the sample placement platform, and the camera is located on one side of the sample placement platform. The sample placement platform is used to place samples, and a temperature control component is provided on the sample placement platform to adjust the temperature of the sample placement platform. The base is also provided with a liquid injection adjustment component, a placement stage adjustment component, and an imaging adjustment component. The liquid injection adjustment component is used to adjust the liquid injection device to move left and right on the base. The placement stage adjustment component is used to adjust the sample placement stage to move up and down, left and right, and forward and backward on the base. The imaging adjustment component is used to adjust the camera to move forward and backward and rotate up and down on the base.
2. The multi-directional adjustable contact angle measuring instrument according to claim 1, characterized in that: The placement platform adjustment assembly includes a mounting base, which is detachably connected to the base. The mounting base is provided with a front and rear module of the placement platform. The output end of the front and rear module of the placement platform is provided with a left and right module of the placement platform. The output end of the left and right module of the placement platform is provided with a lifting module of the placement platform. The sample placement platform is connected to the output end of the lifting module of the placement platform.
3. The multi-directional adjustable contact angle measuring instrument according to claim 2, characterized in that: The left and right modules of the placement platform include module fixing seats, which are connected to the output ends of the front and rear modules of the placement platform. The module fixing seats are provided with left and right adjustment guide rails and left and right adjustment screws. The left and right adjustment screws are rotatably connected to the module fixing seats. One end of the left and right adjustment screws is provided with a left and right adjustment handwheel. A left and right adjustment slider is sleeved on the left and right adjustment screws. The left and right adjustment sliders are slidably engaged with the left and right adjustment guide rails. The lifting module of the placement platform is connected to the left and right adjustment sliders.
4. The multi-directional adjustable contact angle measuring instrument according to claim 1, characterized in that: The injection device includes an injection lifting assembly and an outlet assembly. The injection lifting assembly is connected to the output end of the injection adjustment assembly, and the outlet assembly is connected to the output end of the injection lifting assembly. The injection lifting assembly is used to drive the outlet assembly to move up and down.
5. The multi-directional adjustable contact angle measuring instrument according to claim 4, characterized in that: The liquid dispensing assembly includes a liquid dispensing mounting base, on which a liquid injection pump and a liquid storage tube are provided. The liquid storage tube is detachably snapped into the liquid dispensing mounting base. The lower end of the liquid storage tube is provided with a liquid dispensing needle tube. The output end of the liquid injection pump is provided with a liquid injection rod. The liquid injection pump can drive the liquid injection rod to extend into or out of the liquid storage tube.
6. The multi-directional adjustable contact angle measuring instrument according to claim 1, characterized in that: The imaging adjustment assembly includes an adjustment base connected to the base. The adjustment base is provided with an imaging swing module. The output end of the imaging swing module is provided with a front and rear imaging module. The camera is connected to the output end of the front and rear imaging module.
7. The multi-directional adjustable contact angle measuring instrument according to claim 1, characterized in that: The camera is equipped with an output connector for connecting to an external control device, and the base is equipped with a power connector for connecting to an external power source.
8. The multi-directional adjustable contact angle measuring instrument according to any one of claims 1-7, characterized in that: The base is equipped with a supplementary light, which is located on one side of the sample placement stage and is used to illuminate the sample on the sample placement stage.
9. The multi-directional adjustable contact angle measuring instrument according to claim 8, characterized in that: The base is equipped with a light source switch and a brightness adjustment switch. The light source switch is used to turn the fill light on or off, and the brightness adjustment switch is used to adjust the brightness of the fill light.
10. The multi-directional adjustable contact angle measuring instrument according to claim 8, characterized in that: The liquid injection device, camera, liquid injection adjustment component, placement platform adjustment component, imaging adjustment component, and supplementary light are each covered with a protective cover, which is fixedly connected to the base.