Visual analysis system for identifying and marking defects of biological test paper membrane solution coated lines

Abstract

The utility model discloses a visual analysis system for identifying and marking biological test paper film solution coating line defects, which comprises a base, a solution coating part and a visual part, a reciprocating motion part is arranged on the base, and the visual part further comprises a solution line defect marking waste ink jet assembly. The reciprocating motion component can move the sheet type biological membrane leftwards or rightwards, when the biological membrane moves rightwards, membrane scratching or metal spraying operation can be completed, then clear or fuzzy solution lines on the biological membrane are judged through the visual component, and the solution lines which do not conform to the membrane scratching and metal spraying standard are recorded as defects. Afterwards, the biological membrane moves rightwards to return to the solution line defect marking waste ink jet assembly, marking waste and mark identification of the defect position are completed, and it is confirmed that the defect is accurately marked. The device has the advantage of being compact, is an upgrade of a platform type film scratching and metal spraying instrument, realizes automatic film scratching and metal spraying, visual judgment and waste marking inspection, can replace manual waste judgment and marking processes for laboratory or small-batch processing, realizes automatic operation, and avoids the problems of long time consumption and poor precision of manual identification and marking.

Description

TECHNICAL FIELD

[0001] The technical scheme mainly relates to the technical fields of "visual detection technology" and "automated equipment manufacturing technology", and particularly relates to a visual analysis system for recognizing and marking defects of biological test paper film solution coating lines. BACKGROUND

[0002] In the production and manufacturing process of in vitro diagnostic immune test paper products, film drawing and gold spraying are two key steps. The film drawing and gold spraying effect directly determines the quality of the diagnostic kit. The traditional bench-type film drawing and gold spraying equipment is limited by the size of the workbench and the detection interval, and it is difficult to integrate visual and marking functions, which requires manual identification of film drawing and gold spraying effects and manual marking of defects. Some sheet materials are difficult to identify C-line and T-line in the case of solution drying, and it is also difficult to evaluate the film drawing and gold spraying effect, resulting in time waste or the emergence of defective products. The traditional production method is low in efficiency, easy to miss detection, and requires high skills of the operator. In addition, although some equipment has automatic detection function, it cannot realize real-time and accurate marking and checking of defects, which increases the difficulty of subsequent processing. In order to improve the production efficiency and product quality, it is particularly important to develop a visual analysis system for recognizing and marking defects of biological test paper film solution coating lines.

[0003] In view of the above problems, the technical scheme provides a visual analysis system for recognizing and marking defects of biological test paper film solution coating lines. Through the system, the film material after film drawing and gold spraying can be positioned and recognized in real time, and the position and defect information can be recorded. When the sheet biological film material moves to the left, the equipment will accurately mark according to the record, realizing rapid identification and processing of the film material defects.

[0004] Compared with the prior art, the present scheme has the following advantages:

[0005] 1. High-precision visual detection: through the cooperation of the linear array camera and the position recording unit, the system can accurately judge the film drawing and gold spraying effect of the wet or semi-dry state of the film material, and identify the tiny defects under high-speed operation.

[0006] 2. Defect marking and identification: the inkjet line identifier in the solution line defect marking and inkjet assembly can check the inkjet marking of the defect position and feed back whether there is an inkjet marking signal, realizing accurate tracking and management of the defect record.

[0007] 3. Automatic operation: the system uses a synchronous belt or rack-driven reciprocating motion carrier assembly to realize automatic conveying and detection of the film material, greatly improving the detection efficiency.

[0008] 4. Flexible adjustment mechanism: Z-direction and Y-direction adjustment seats in the solution coating component can realize accurate positioning of the membrane marking pen and the gold spraying head, and adapt to the coating requirements of different membrane materials.

[0009] 5. High integration of functions: Based on a small-size desktop membrane marking and gold spraying device, the device self-cleaning, defect identification and marking functions are integrated, the spatial contradiction caused by the reaction time of the visual module and the marking module is overcome by adopting the reciprocating motion mode, and the integration of the compact device and the multifunctional module is realized.

[0010] In summary, the scheme effectively solves the technical problems of defect identification and marking of membrane marking and gold spraying membrane materials through an innovative visual analysis system, improves the detection efficiency and accuracy, and provides a reliable and efficient quality control means for the production of immunochromatography test paper. SUMMARY

[0011] Therefore, the technical scheme mainly solves the following technical problems: 1) The traditional manual visual inspection is low in efficiency, is easily affected by human factors, and is difficult to identify small defects; 2) The existing sheet-type membrane material production and detection equipment lacks accurate positioning and marking functions, and cannot effectively identify and track defects and manage missing marks; 3) The existing detection method is slow in detection speed, low in accuracy, and cannot realize automation, which seriously affects the production efficiency and product quality.

[0012] The purpose of the present application is to overcome the deficiencies in the prior art and provide a visual analysis system for identifying and marking defects in solution coating lines of biological test paper membranes, which has the characteristics of multi-degree-of-freedom adjustment of solution coating components, automatic defect identification and automatic marking inspection.

[0013] To solve the above technical problems, the purpose of the present application is achieved by: a visual analysis system for identifying and marking defects in solution coating lines of biological test paper membranes, comprising a base, a solution coating component, a visual component, a solution line defect marking and waste inkjet assembly, and a controller.

[0014] The base is provided with a reciprocating motion component, which comprises a power assembly and a stage assembly. The stage assembly is fixed on the upper end of the power assembly through a sliding table. The reciprocating motion component can carry out leftward or rightward reciprocating motion of the membrane material.

[0015] The solution coating component comprises a support, a Z-direction adjustment seat and a Y-direction adjustment seat. The Y-direction adjustment seat is provided with a membrane solution coating component at the tail end. The support is fixed on the base or can be integrally arranged with the Z-direction adjustment seat. The Z-direction adjustment seat can realize automatic adjustment of the Z-direction of the solution coating component. The Y-direction adjustment seat can realize automatic adjustment of the Y-direction of the solution coating component. The solution coating component comprises a membrane marking pen assembly and a gold spraying head assembly.

[0016] The visual component is fixed on the base and arranged on the left side or the right side of the solution coating component, and can be used for detecting the X-direction film solution coating line in cooperation with the reciprocating motion component.

[0017] The solution line defect marking inkjet assembly is arranged on the left side of the solution coating component, and comprises an inkjet line identifier and a marking line inkjet assembly, which can realize the functions of marking the film material boundary position, defect marking, and identification verification.

[0018] The controller is fixed on the base and can realize data processing of information coordination of the base motion assembly, the solution coating component, the visual component, and the like.

[0019] Specifically, when the reciprocating motion component moves to the right, the solution coating component works to complete the film drawing and ink spraying of the sheet type biological film material, and then continues to move forward to reach the visual component. The visual component can identify the coating solution on the film material surface in the wet or dry state, and judge whether the film drawing and ink spraying meet the requirements in combination with the solution line width and straightness. The defect position that does not meet the requirements is recorded, and after the identification of the whole film material is completed, the reciprocating motion component starts to move reversely, reaches the solution line defect marking inkjet assembly, and then starts to spray ink according to the defect position and check the marking. Once the ink marking is missed, the reciprocating motion component is controlled to complete the defect marking again.

[0020] Further, the base is a basic support structure of the whole system, and the reciprocating motion component is arranged thereon.

[0021] Further, the power assembly is a synchronous belt or a rack drive, and the power assembly can drive the stage assembly to reciprocate along the X-axis to the left or to the right, and can be connected to a position recording unit to record the motion position of the stage assembly.

[0022] Further, the bracket comprises a sliding shaft and a sliding sleeve, and the sliding sleeve is fixed on the base. The Z-direction adjusting seat comprises a motor and a Z-axis connecting block, the sliding shaft is fixed on the Z-axis connecting block, and the motor drives the Z-axis connecting block and the optical shaft to move up and down. The upper end of the optical shaft is fixed with a Y-direction adjusting seat, and the Y-direction adjusting seat comprises a film drawing head assembly and an ink spraying head assembly.

[0023] Further, the ink spraying head assembly comprises a solution pipe holder and a pneumatic ink spraying head, and the pneumatic ink spraying head is provided with a self-cleaning opening.

[0024] Further, the visual component includes a linear array camera, which can judge the quality of the solution-coated line on the single-direction forward film, and cooperate with the platform power assembly to complete the quality defect positioning record of the line; when the carrier assembly reverses, the controller outputs the quality defect positioning record of the solution line in reverse through the film edge positioning information, and the solution line defect marking inkjet assembly marks the defect with a visible color line.

[0025] Further, the visual component also includes a position recording unit connected with the power assembly through a synchronous belt or a gear, and the linear array camera can judge the quality of the solution-coated line on the forward running film, and cooperate with the position information of the position recording unit and the power assembly to complete the defect positioning record.

[0026] Further, the inkjet line identifier can identify the inkjet marking line of the defect on the backward moving film, and compare the defect information with the controller to confirm whether all solution line defects are marked in place.

[0027] Further, the marking line inkjet assembly is one of a pen or an inkjet, or both, which can achieve visible color marking of the boundary position or the defect position.

[0028] Further, the marking line inkjet assembly includes at least two inkjet ports, which can separately complete the boundary position marking and the defect marking.

[0029] Further, the gold spraying head assembly includes a self-cleaning interface located at the upper part of the gold spraying head assembly, which can fully atomize the solution just entering the gold spraying head assembly and discharge it from the bottom, achieving the purpose of automatically cleaning the inside of the gold spraying head assembly from top to bottom.

[0030] Compared with the prior art, the present application has the following advantages: 1. Improve the accuracy of identification: the scribing quality visual analysis system of the utility model can accurately judge the scribing and gold spraying effect on the film material through the cooperation of the line array camera and the position recording unit of the visual component, effectively identify the defects in the wet or dry state, and improve the accuracy of defect identification. 2. Enhance the operation flexibility: the power assembly of the system adopts synchronous belt or rack drive, which can drive the stage to reciprocate along the X axis forward or backward, and then make the compact layout of each functional module on the table device, and adapt to different sizes and shapes of film materials. 3. Improve the automation level: the scribing quality visual analysis system of the utility model has the defect marking and marking identification function, and through the inkjet line identifier of the solution line defect marking and waste inkjet assembly, the automatic inkjet marking and detection of the defect position are realized, and the automation level of the production process is improved. 4. Optimize the equipment structure: through the design of Z direction adjusting seat and Y direction adjusting seat, the scribing pen assembly and the gold spraying head assembly can be accurately adjusted, and the stability of the equipment and the convenience of the operation are improved. 5. Enhance the self-cleaning ability: the gold spraying head assembly is provided with self-cleaning openings, which can reduce the blockage and pollution in the gold spraying process, improve the product quality, and prolong the service life of the equipment. 6. Improve the production efficiency: the scribing quality visual analysis system of the utility model can detect and mark the defects on the film material in real time, reduce the time and cost of manual inspection, and improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 It is a structural schematic view of the visual analysis system of the utility model;

[0033] Figure 2 It is a structural schematic view of the reciprocating motion component of the utility model;

[0034] Figure 3 It is a structural schematic view of the solution coating component of the utility model;

[0035] Figure 4 It is a structural schematic view of the gold spraying head assembly of the utility model;

[0036] Figure 5 It is a structural schematic view of the solution line defect marking and waste inkjet assembly of the utility model.

[0037] The reference signs in the drawings are as follows: 10, base; 20, solution coating part; 21, support; 22, Z-direction adjusting seat; 221, sliding rod; 222, motor; 223, motor fixing seat; 224, sliding sleeve; 23, Y-direction adjusting seat; 231, support frame; 232, film marking pen assembly; 233, gold spraying head assembly; 2331, solution pipe; 2332, air inlet pipe; 2333, self-cleaning interface; 234, motor; 235, synchronous belt; 30, visual part; 40, reciprocating motion part; 41, power assembly; 411, motor; 412, synchronous pulley; 413, motor fixing plate 413; 42, stage assembly; 421, stage; 422, synchronous belt; 423, sliding table; 50, line defect marking and waste inkjet assembly; 51, marking line inkjet assembly; 52, inkjet line identifier; 53, Z-direction fine adjustment knob; 54, Y-direction fine adjustment knob; 55, Z-direction sliding table air cylinder; 56, Y-direction slot; 60, controller. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0039] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0040] In addition, "and / or" throughout the text includes three solutions, for example, A and / or B includes A technical solution, B technical solution, and A and B simultaneously meet the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0041] As shown in the drawings, Figure 1 Figure 5 The present application provides a technical solution: a biological test paper film solution coating line defect identification and marking visual analysis system, comprising a base 10, a solution coating part 20, a visual part 30, a solution line defect marking and waste inkjet assembly 50, and a controller 60:

[0042] In the present embodiment, as shown in the drawings, Figure 2 ​As shown, the base 10 is provided with a reciprocating component 40, which comprises a power assembly 41 and a carrier assembly 42, the carrier assembly 42 being fixed on the upper end of the power assembly 41 through a sliding table 423, the reciprocating component 40 can carry the left or right reciprocating movement of the film material, the carrier assembly 42 is provided with a carrier 421, a synchronous belt 422 and the sliding table 423, the carrier assembly 42 is fixed on the upper end of the power assembly 41 through the sliding table 423, and the sliding table 423 can reduce the friction of the carrier assembly 42 movement;

[0043] Specifically, the carrier 421 is used to fix the sheet film material and drive the film material to reciprocate; the synchronous belt 422 is fixed at the bottom end of the carrier 421 and is used to cooperate with the power assembly 41 to complete the reciprocating movement; the sliding table 423 realizes the relative sliding between the base 10 and the carrier assembly 42 through a sliding block;

[0044] Specifically, the power assembly 41 is fixed on the base 10, and the power assembly 41 comprises a motor 411, a synchronous pulley 412 and a motor fixing plate 413, the motor 411 is fixed on the base 10 through the motor fixing plate 413, and the motor 411 drives the synchronous pulley 412 to move when rotating, and generates relative movement with the synchronous belt 422 fixed on the carrier assembly 42, thereby driving the carrier assembly 42 to reciprocate left or right.

[0045] In this embodiment, as shown in the figure, Figure 3 The solution coating component 20 comprises a support 21, a Z-direction adjusting seat 22 and a Y-direction adjusting seat 23, the support 21 is fixed on the base 10 and can also be integrally arranged with the Z-direction adjusting seat, the Z-direction adjusting seat can realize the automatic adjustment of the Z-direction of the solution coating component, the Y-direction adjusting seat can realize the automatic adjustment of the Y-direction of the solution coating component, and the solution coating component comprises a film marking pen assembly and a gold spraying head assembly; the Z-direction adjusting seat 22 comprises a sliding rod 221, a motor 222, a motor fixing seat 223 and a sliding sleeve 224, the lower part of the sliding rod 221 is fixed in the sliding sleeve 224, when the motor 222 rotates, the sliding sleeve 224 moves up and down, driving the Y-direction adjusting seat 23 at the upper part of the sliding rod 221 to move up and down, and in addition, the motor fixing seat 223 is further provided with a limit sensor which can limit the rotation of the motor 222;

[0046] Specifically, the Y-direction adjusting seat 23 comprises a support frame 231, a film marking pen assembly 232, a gold spraying head assembly 233, a motor 234 and a synchronous belt 235, the synchronous belt 235 is fixed on the support frame 231, the Y-direction adjusting seat 23 is provided at the tail end with a film material solution coating component, the film material solution coating component comprises the film marking pen assembly and the gold spraying head assembly, and the film marking pen assembly 232 and the gold spraying head assembly 233 move synchronously with the synchronous belt 235;

[0047] Specifically, the gold spray head assembly 233 includes a solution tube 2331, an air inlet tube 2332, and a self-cleaning interface 2333. The solution tube 2331 is located at the top of the gold spray head assembly and is sealed to the air inlet tube 2332. When air is introduced through the air inlet, the bottom nozzle descends, and the solution is atomized and discharged from the nozzle, ensuring the gold spraying effect. During the gold spraying process, the liquid flowing out of the solution tube 2331 is pressurized and atomized by the air inlet tube 2332 to complete the gold spraying process. When changing the coating solution, the inside of the gold spray head assembly 233 needs to be cleaned. Simultaneous activation of the solution tube 2331, air inlet tube 2332, and self-cleaning interface 2333, or simultaneous activation of the solution tube 2331 and self-cleaning interface 2333, can complete the atomization and filling of the cleaning solution inside the gold spray head assembly 233, reducing manual disassembly and assembly time. At the same time, it can also achieve rapid cleaning from top to bottom when the gold spray head is clogged. The self-cleaning interface is located at the top of the gold spray head assembly, which can fully atomize the solution that just enters the gold spray head assembly and discharge it from the bottom, achieving the purpose of automatically cleaning the inside of the gold spray head assembly from top to bottom.

[0048] In this embodiment, as Figure 1 As shown, the vision component 30 is fixed on the base 10 and positioned on the left or right side of the solution coating component 20. It can be used to detect the quality of the solution coating lines of the membrane material in the X direction. It also includes a solution line defect marking inkjet assembly 50. The vision component 30 includes a line scan camera 32 and a position recording unit 31. The line scan camera 32 can judge the quality of the solution coating lines on the membrane material moving forward, and cooperate with the platform power component 41 to complete the recording of the quality defect location of the lines. When the stage assembly 42 moves in the reverse direction, the controller 60 outputs the quality defect location record of the solution lines in the reverse direction through the membrane material edge positioning information. The line defect marking inkjet assembly 50 marks the defects with visible color lines. The position recording unit 31 is connected to the power component 41 through a synchronous belt or rack. Therefore, when the sheet membrane material on the stage assembly 42 moves, it will drive the position recording unit 31. The line scan camera 32 can judge the quality of the solution coating lines on the membrane material moving forward. The position recording unit 31 and the position information of the power component 41 complete the recording of the defect location in the controller 60.

[0049] Specifically, the position recording unit 31 is connected to the power assembly 41 via a synchronous belt, which can record the motion position signal of the platform assembly 42 or the membrane material on it, and transmit the signal to the controller.

[0050] In this embodiment, as Figure 5As shown, the solution line defect marking waste inkjet assembly is located on the left side of the solution coating component, and comprises an inkjet line identifier and a marking line inkjet assembly, which can realize the functions of marking the boundary position of the film material, defect marking, and identification verification. The solution line defect marking waste inkjet assembly 50 is arranged on the left side or the right side of the solution coating component 20 to meet the reaction time requirement between the visual component 30 and the solution line defect marking waste inkjet assembly 50.

[0051] Specifically, the solution line defect marking waste inkjet assembly 50 comprises a marking line inkjet assembly 51 and an inkjet line identifier 52. The marking line inkjet assembly 51 marks the defect position on the film material in the rear movement. The inkjet line identifier 52 is arranged on the left side or the right side of the marking line inkjet assembly, and can detect whether there is inkjet marking. If there is a defect position missing marking, a signal is fed back to the controller to control the reciprocating movement component 40 to move back to the lower part of the marking line inkjet assembly 51 to complete the inkjet marking of the defect position.

[0052] Specifically, the marking line inkjet assembly is one of a pen or an inkjet, or both, which can realize the naked-eye visible color marking of the boundary position or the defect position. The marking line inkjet assembly comprises at least two inkjet ports, which can separately complete the boundary position marking and the defect marking.

[0053] Specifically, the solution line defect marking waste inkjet assembly 50 further comprises a Z-direction fine adjustment knob 53, a Y-direction fine adjustment knob 54, a Z-direction sliding table air cylinder 55, and a Y-direction slot 56. The Z-direction sliding table air cylinder 55 is fixed on the base 10 through a fixing block, and can realize the coarse adjustment of the Z-direction position of the solution line defect marking waste inkjet assembly 50. The Y-direction slot 56 meets the coarse adjustment of the Y-direction of the solution line defect marking waste inkjet assembly 50. The Z-direction fine adjustment knob 53 and the Y-direction fine adjustment knob 54 can realize the fine adjustment of the position of the marking line inkjet assembly 51 and the inkjet line identifier 52 through the dovetail groove structure.

[0054] Specifically, if the film material is only used for identification and judgment, the solution line defect marking waste inkjet assembly 50 can also be conveniently cancelled.

[0055] In the embodiment, the controller 60 is fixed on the base 10, and can realize the data processing of coordinating the information of the movement assembly 41, the solution coating component 20, and the visual component 30.

[0056] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made according to the application concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A visual analysis system for identifying and marking defects in the solution coating lines of biological test strips, comprising a base, a solution coating component, a vision component, a solution line defect marking inkjet assembly, and a controller, characterized in that... : The base is provided with a reciprocating component, which comprises a power assembly and a carrier assembly. The carrier assembly is fixed on the upper end of the power assembly through a sliding table. The reciprocating component can carry the film material to move left or right. The solution coating component comprises a bracket, a Z-direction adjusting seat and a Y-direction adjusting seat. The Y-direction adjusting seat is provided with a film solution coating component at the tail end. The bracket is fixed on the base or integrated with the Z-direction adjusting seat. The Z-direction adjusting seat can automatically adjust the Z-direction of the solution coating component. The Y-direction adjusting seat can automatically adjust the Y-direction of the solution coating component. The solution coating component comprises a film marking pen assembly and a gold spraying head assembly. The visual component is fixed on the base and arranged on the left or right side of the solution coating component. It can cooperate with the reciprocating component to detect the X-direction film solution coating line. The solution line defect marking and inkjet component is arranged on the left side of the solution coating component and comprises an inkjet line identifier and a marking line inkjet component. The controller is fixed on the base.

2. The visual analytical system for identifying and marking the defective lines of the solution coated bio test strip membrane as claimed in claim 1, wherein, The power assembly is a synchronous belt or a rack drive. The power assembly can drive the carrier assembly to move left or right along the X-axis. It can also be connected to a position recording unit to record the moving position of the carrier assembly.

3. A visual analytical system for identifying and marking defective lines of a solution coated bioassay membrane according to claim 1, wherein, The visual component comprises a line array camera. The line array camera can judge the quality of the solution coating line on the single-direction high-speed forward film material. The line array camera is connected to the position recording unit to complete the quality defect positioning record of the line. When the carrier assembly reverses and retreats, the controller reverses the quality defect positioning record of the solution line through the film edge positioning information and outputs it. The solution line defect marking and inkjet component marks the defect with a visible color line.

4. A visual analytical system for identifying and marking defective lines of a solution coated bioassay membrane according to claim 1, wherein, The visual component also comprises a position recording unit. The position recording unit is connected to the power assembly through a synchronous belt or a rack. The line array camera can judge the quality of the solution coating line on the film material running forward. The line array camera completes the defect positioning record in cooperation with the position information of the position recording unit.

5. A visual analytical system for identifying and marking defective lines in a solution coated bioassay membrane according to claim 1, wherein, The inkjet line identifier is arranged on the left or right side of the marking line inkjet component. The inkjet line identifier can identify the inkjet marking line on the film material moving after inkjet. It compares the defect information of the controller to confirm whether all solution line defects are marked in place.

6. A visual analytical system for identifying and marking defective lines in a solution coated bioassay membrane according to claim 1, wherein, The marking line inkjet component is one of a pen or an inkjet. It can mark the boundary position or the defect position with a visible color.

7. A visual analytical system for identifying and marking defective lines in a solution coated bioassay membrane according to claim 6, wherein the system further comprises a computer program for analyzing the image of the solution coated bioassay membrane. It comprises at least two inkjet ports, which can separately complete the boundary position marking and the defect marking.

8. A visual analytical system for identifying and marking defective lines of a solution coated bioassay membrane according to claim 1, wherein, The gold spraying head assembly comprises a self-cleaning interface. The self-cleaning interface is located on the upper part of the gold spraying head assembly. It can fully atomize the solution entering the gold spraying head assembly and discharge it from the bottom, achieving the purpose of automatically cleaning the inside of the gold spraying head assembly from top to bottom.

Images