CN215866262U

CN215866262U - Piezoelectric jet type automatic dropping liquid contact angle measuring instrument

Info

Publication number: CN215866262U
Application number: CN202121292984.7U
Authority: CN
Inventors: 陶维春
Original assignee: Oulanda Instrument Technology Suzhou Co ltd
Current assignee: Oulanda Instrument Technology Suzhou Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-02-18
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a piezoelectric jet type automatic dropping liquid contact angle measuring instrument, relating to the technical field of measuring instruments, and the technical scheme is as follows: the automatic sample feeding device comprises a workbench, a visual identification system is arranged on the workbench, a sample feeding system and a control system are arranged, the sample feeding system is electrically connected with the control system, the sample feeding system comprises a sample table mounting seat arranged on the workbench, a sample table arranged on the sample table mounting seat and a liquid dropping mechanism arranged on one side of the sample table, the liquid dropping mechanism comprises a mounting frame arranged on the workbench and a piezoelectric injection device arranged on the mounting frame above the sample table, an infrared positioning light source is arranged on the mounting frame towards the sample table, and the infrared positioning light source is electrically connected with the control system. The utility model can control the liquid drop to the pico liter level by the arrangement of the piezoelectric spraying device, the tiny liquid drop is close to the fog state, the trouble that the contact angle can not be tested by the tiny sample in the industry at present is solved, and the utility model has the advantages of high working efficiency and accurate test.

Description

Piezoelectric jet type automatic dropping liquid contact angle measuring instrument

Technical Field

The utility model relates to the technical field of measuring instruments, in particular to a piezoelectric jet type automatic dropping liquid contact angle measuring instrument.

Background

The contact angle measuring instrument in the prior art has the following problems no matter in a manual dropping type or an automatic dropping type:

(1) due to the tension action of the liquid, the liquid drop can not be directly transferred to the surface of a test sample, and the liquid drop can be attached to the surface of the sample after touching the surface of the sample through other mechanisms, so that the liquid drop is extruded to influence the accuracy of contact angle test;

(2) the minimum liquid volume and the control precision of a liquid dropping mechanism adopted by the traditional contact angle measuring instrument can only achieve micro-upgrade, and cannot meet the requirements of narrow test areas or extremely small surfaces of samples (such as mobile phone frames, chips, silk threads and the like which are achieved extremely in the current market);

(3) the continuous dropping liquid process of traditional type contact angle measuring apparatu is slower, influences test speed, and is not convenient for quick location, and its dropping liquid precision is difficult to guarantee.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a piezoelectric jet type automatic dropping liquid contact angle measuring instrument, which can control liquid drops to be pico-liter grade through the arrangement of a piezoelectric jet device, and the tiny liquid drops are close to fog-like, thereby solving the problem that the contact angle cannot be tested by the tiny sample in the industry at present, and simultaneously having the advantages of high working efficiency and accurate test.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides an automatic dropping liquid contact angle measuring apparatu of piezoelectricity injection formula, comprises a workbench, be provided with visual identification system, application of sample system and control system on the workstation, application of sample system and control system electric connection, the application of sample system is including setting up sample platform mount pad on the workstation, setting sample platform and the dropping liquid mechanism of setting in sample platform one side on the sample platform mount pad, dropping liquid mechanism is including setting up the mounting bracket on the workstation and being located the piezoelectric injection device that the sample bench side set up on the mounting bracket, be provided with infrared positioning light source towards the sample platform on the mounting bracket, infrared positioning light source and control system electric connection.

The utility model is further configured to: still be provided with control panel on the mounting bracket, control panel and control system electric connection, control panel includes total switch, is used for controlling infrared light source's infrared light source switch and is used for controlling the dropping liquid of dropping liquid mechanism dropping liquid and spout the button promptly.

The utility model is further configured to: the piezoelectric injection device comprises a piezoelectric ceramic valve body, wherein a nozzle is detachably connected to one end, facing the sample platform, of the piezoelectric ceramic valve body, a liquid storage barrel communicated with the interior of the piezoelectric ceramic valve body is arranged at the other end of the piezoelectric ceramic valve body, an air pipe used for connecting an external air source is communicated with one end, far away from the piezoelectric ceramic valve body, of the liquid storage barrel, and the piezoelectric ceramic valve body is electrically connected with the control system through a quick-insertion interface by a wire.

The utility model is further configured to: the backlight source is arranged on one side, located on the sample platform, of the mounting frame, the backlight source is electrically connected with the control system, and the control panel further comprises a backlight source adjusting knob used for adjusting the brightness of the backlight source.

The utility model is further configured to: the visual identification system comprises a pitching adjusting seat arranged on the workbench, wherein a pitching adjusting knob used for adjusting the pitching angle of the pitching adjusting seat is arranged on the pitching adjusting seat, a camera and a microscope magnifier communicated with a camera light path are sequentially arranged on the pitching adjusting seat in the direction of the sample platform, and a focal length adjusting knob used for adjusting the focal length of the microscope magnifier is further arranged on the pitching adjusting seat.

The utility model is further configured to: the sample table comprises a worktable and is characterized in that a sliding plate is arranged on the worktable, a sample table mounting seat is arranged on the sliding plate, a horizontal moving knob used for adjusting the sample table mounting seat to move along the X-axis and Y-axis directions is arranged on the sliding plate, and a sample table lifting knob is arranged on the sample table mounting seat.

The utility model is further configured to: and an air source pressure regulating valve communicated with the air pipe is arranged on the mounting rack.

The utility model is further configured to: supporting legs are in threaded connection with the bottom of the workbench at four corners of the workbench.

The utility model is further configured to: the piezoelectric spraying device is characterized in that the mounting rack is provided with a longitudinal lifting frame and a lifting adjusting knob for adjusting the lifting of the longitudinal lifting frame, and the piezoelectric spraying device is arranged on the longitudinal lifting frame.

In conclusion, the utility model has the following beneficial effects: 1. through the arrangement of the piezoelectric ceramic valve body, the firing pin is swung above the nozzle by adopting high-speed piezoelectric ceramic in the piezoelectric ceramic valve body, liquid flows into a cavity between the firing pin and the nozzle under pressure, the firing pin impacts the nozzle to directly spray liquid drops to the surface of a sample, the liquid drops can be transferred only by adjusting the piezoelectric injection device to a proper height through the lifting adjusting knob without contacting the surface of the sample, and the precision of contact angle test cannot be influenced because the liquid drops are extruded; 2. the adopted piezoelectric jet principle can control the liquid drop to the pico liter level only by replacing a proper nozzle and adjusting the air pressure through an air source pressure adjusting valve, the tiny liquid drop is close to fog, and the trouble that the contact angle cannot be tested by a tiny sample in the current industry is solved: 3. through piezoelectric injection apparatus's setting, lacked the process that the liquid drop need touch the sample surface and just can make the liquid drop transfer to the sample surface to through the setting of infrared location light source, infrared light can be beaten and form the facula so that carry out the quick adjustment location to the sample in the use, so continuous dropping liquid speed is faster, and efficiency is higher.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the dropping mechanism.

In the figure: 1. a work table; 2. supporting legs; 3. a visual recognition system; 31. a microscopic magnifier; 32. a pitching adjusting seat; 33. a camera; 34. a focus adjustment knob; 35. a pitch adjustment knob; 4. a sample application system; 411. a slide plate; 412. a sample stage mounting base; 413. a sample stage; 414. a sample stage lifting knob; 415. a horizontally moving knob; 421. a mounting frame; 422. a piezoelectric ceramic valve body; 423. a nozzle; 424. a liquid storage barrel; 425. an air tube; 426. an air source pressure regulating valve; 427. a lifting adjusting knob; 5. a control system; 6. an infrared positioning light source; 7. a backlight source; 8. a control panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides an automatic dropping liquid contact angle measuring apparatu of piezoelectric injection formula, as shown in FIG. 1-FIG. 2, includes workstation 1, be provided with visual identification system 3, application of sample system 4 and control system 5 on workstation 1, application of sample system 4 and control system 5 electric connection, application of sample system 4 is including setting up sample platform mount pad 412 on workstation 1, setting up sample platform 413 on sample platform mount pad 412 and setting up the dropping liquid mechanism in sample platform 413 one side, dropping liquid mechanism is including setting up mounting bracket 421 on workstation 1 and being located the piezoelectric injection device that sets up on mounting bracket 421 above sample platform 413, be provided with infrared location light source 6 towards sample platform 413 on mounting bracket 421, infrared location light source 6 and control system 5 electric connection, through piezoelectric injection device's setting, can control the liquid drop to the pico liter level, the tiny liquid drops are close to fog, the trouble that the contact angle cannot be tested by a tiny sample in the industry at present is solved, and the method has the advantages of high working efficiency and accurate test.

On the basis, still be provided with control panel 8 on mounting bracket 421,

control panel

8 and 5 electric connection of control system, control panel 8 includes total switch, is used for controlling infrared light source's infrared light source switch and is used for controlling the dropping liquid of dropping liquid mechanism dropping liquid to spout the button promptly.

On the basis, piezoelectric injection device includes piezoceramics valve body 422, piezoceramics valve body 422 can be dismantled towards the one end of sample platform 413 and be connected with nozzle 423, and nozzle 423 is threaded connection with piezoceramics valve body 422's connected mode, can change the nozzle 423 of different specifications according to the size of different samples, piezoceramics valve body 422's the other end is provided with the stock solution bucket 424 rather than inside intercommunication, the one end intercommunication that piezoceramics valve body 422 was kept away from to stock solution bucket 424 is provided with the trachea 425 that are used for the access of outside air supply, piezoceramics valve body 422 is through inserting interface and control system 5 electric connection soon by the wire.

On the basis, a backlight source 7 is arranged on one side of the mounting frame 421, which is located on the sample stage 413, the backlight source 7 is electrically connected with the control system 5, the control panel 8 further comprises a backlight source adjusting knob for adjusting the brightness of the backlight source 7, and the backlight source 7 is used for irradiating the sample on the sample stage 413 to enhance the brightness of the sample, so that the recognition accuracy of the visual recognition system 3 can be improved.

On the basis, the vision recognition system 3 comprises a pitching adjusting seat 32 arranged on the workbench 1, a pitching adjusting knob 35 used for adjusting the pitching angle of the pitching adjusting seat 32 is arranged on the pitching adjusting seat 32, a camera 33 and a microscope magnifier 31 communicated with the light path of the camera 33 are sequentially arranged on the pitching adjusting seat 32 in the direction of the sample platform 413, the microscope magnifier 31 with larger magnification can be selected for testing the tiny sample, a focal length adjusting knob 34 used for adjusting the focal length of the microscope magnifier 31 is further arranged on the pitching adjusting seat 32, in the using process, the camera 33 is connected with a computer through a USB data line, and the contact angle of the shot liquid drop is analyzed through computer upper computer software.

On the basis, a sliding plate 411 is arranged on the workbench 1, the sample stage mounting base 412 is arranged on the sliding plate 411, the sliding plate 411 can move on the workbench 1 along the X-axis and Y-axis directions, a horizontal moving knob 415 used for adjusting the sliding plate 411 to move along the X-axis and Y-axis directions is arranged on the sliding plate 411, a sample stage lifting knob 414 is arranged on the sample stage mounting base 412, the sample stage lifting knob 414 is used for controlling the lifting of the sample stage 413, the sliding mode of the sliding plate 411 and the lifting mode of the sample stage 413 are the prior art, and details are not repeated in the embodiment.

On the basis, the mounting frame 421 is provided with an air source pressure regulating valve 426 communicated with the air pipe 425, and the air source pressure regulating valve 426 is used for regulating the size of introduced air pressure to adapt to the liquid spraying operation requirements of different samples.

On the basis, the supporting legs 2 are in threaded connection with the four corners of the bottom of the workbench 1, and the supporting legs 2 are in threaded connection, so that the height of a single supporting leg 2 can be adjusted to achieve leveling of the whole machine.

On the basis, the mounting rack 421 is provided with a longitudinal lifting frame and a lifting adjusting knob 427 for adjusting the lifting of the longitudinal lifting frame, the piezoelectric jetting device is arranged on the longitudinal lifting frame, and the height of the piezoelectric jetting device relative to the sample stage 413 can be adjusted through the arrangement of the longitudinal lifting frame and the lifting adjusting knob 427.

The working principle is as follows: in the working process, the camera 33, the sample table 413 and the piezoelectric injection device are adjusted to the optimal positions, a main power switch is started, an infrared light source switch is turned on, a backlight source adjusting knob is adjusted, a sample is placed on the sample table 413 and is opposite to an infrared light source, an instant injection button is pressed down, through the arrangement of a piezoelectric ceramic valve body 422, a firing pin is swung above a nozzle 423 in the piezoelectric ceramic valve body 422 through high-speed piezoelectric ceramic, liquid flows into a cavity between the firing pin and the nozzle 423 under pressure, the firing pin impacts the nozzle 423 to enable liquid drops to be directly injected to the surface of the sample, the nozzle 423 does not need to contact the surface of the sample, the piezoelectric injection device is adjusted to the proper height through a lifting adjusting knob 427 to complete liquid drop transfer, the accuracy of contact angle test cannot be influenced due to the extrusion of the liquid drops, and then the camera 33 is connected with a computer through a USB data line, the contact angle of the shot liquid drop can be analyzed through software of a computer upper computer; when a small sample needs to be tested, the liquid drop can be controlled to be pico liter grade only by replacing a proper nozzle 423 and adjusting the air pressure through an air source pressure adjusting valve 426, the tiny liquid drop is close to fog, and the trouble that the contact angle cannot be tested by the tiny sample in the industry at present is solved; therefore, the process that liquid drops need to touch the surface of a sample to transfer the liquid drops to the surface of the sample is omitted through the arrangement of the piezoelectric injection device, and the infrared light can strike the sample to form light spots to facilitate quick adjustment and positioning of the sample through the arrangement of the infrared positioning light source 6 in the using process, so that the continuous liquid dropping speed is higher, and the efficiency is higher.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides an automatic dropping liquid contact angle measuring apparatu of piezoelectricity injection formula, includes workstation (1), its characterized in that: be provided with visual identification system (3), application of sample system (4) and control system (5) on workstation (1), application of sample system (4) and control system (5) electric connection, application of sample system (4) is including setting up sample platform mount pad (412) on workstation (1), setting sample platform (413) on sample platform mount pad (412) and setting up the dropping liquid mechanism in sample platform (413) one side, dropping liquid mechanism sets up the piezoelectricity injection apparatus on mounting bracket (421) including setting up mounting bracket (421) on workstation (1) and being located sample platform (413) top, be provided with infrared location light source (6) towards sample platform (413) on mounting bracket (421), infrared location light source (6) and control system (5) electric connection.

2. A piezo jet automatic drip contact angle gauge according to claim 1, wherein: still be provided with control panel (8) on mounting bracket (421), control panel (8) and control system (5) electric connection, control panel (8) spout the button promptly including total switch, the infrared light source switch that is used for controlling infrared light source and the dropping liquid that is used for controlling dropping liquid mechanism dropping liquid.

3. A piezo jet automatic drip contact angle gauge according to claim 1, wherein: piezoelectric injection apparatus includes piezoceramics valve body (422), piezoceramics valve body (422) can be dismantled towards the one end of sample platform (413) and be connected with nozzle (423), the other end of piezoceramics valve body (422) is provided with stock solution bucket (424) rather than inside intercommunication, the one end intercommunication that piezoceramics valve body (422) were kept away from in stock solution bucket (424) is provided with trachea (425) that are used for the access of outside air supply, piezoceramics valve body (422) are through inserting interface and control system (5) electric connection soon by the wire.

4. A piezo jet automatic drip contact angle gauge according to claim 2, wherein: one side that lies in sample platform (413) on mounting bracket (421) is provided with backlight (7), backlight (7) and control system (5) electric connection, control panel (8) still include the backlight adjust knob that is used for backlight (7) brightness control.

5. A piezo jet automatic drip contact angle gauge according to claim 1, wherein: visual identification system (3) adjust seat (32) including setting up every single move on workstation (1), be provided with every single move adjust knob (35) that are used for adjusting its every single move angle on every single move adjust seat (32), every single move adjust seat (32) upward to sample platform (413) and set gradually camera (33) and with microscope magnifier (31) of camera (33) light path intercommunication, still be provided with focus adjust knob (34) that are used for microscope magnifier (31) focus to adjust on every single move adjust seat (32).

6. A piezo jet automatic drip contact angle gauge according to claim 1, wherein: the automatic sample table lifting device is characterized in that a sliding plate (411) is arranged on the working table (1), a sample table mounting seat (412) is arranged on the sliding plate (411), a horizontal moving knob (415) used for adjusting the sample table mounting seat to move along the X-axis direction and the Y-axis direction is arranged on the sliding plate (411), and a sample table lifting knob (414) is arranged on the sample table mounting seat (412).

7. A piezo jet automatic drip contact angle gauge according to claim 3, wherein: and an air source pressure regulating valve (426) communicated with an air pipe (425) is arranged on the mounting rack (421).

8. A piezo jet automatic drip contact angle gauge according to claim 1, wherein: the bottom of the workbench (1) is positioned at four corners of the workbench and is in threaded connection with supporting legs (2).

9. A piezo jet automatic drip contact angle gauge according to claim 3, wherein: the mounting rack (421) is provided with a longitudinal lifting rack and a lifting adjusting knob (427) for adjusting the lifting of the longitudinal lifting rack, and the piezoelectric injection device is arranged on the longitudinal lifting rack.