A method for preparing anticorrosion coating with high throughput

Abstract

The present application relates to the technical field of preparation of anti-corrosion coatings, and provides a method for preparing anti-corrosion coatings with high throughput, comprising the following steps: treating the surface of a sample plate to be coated, and placing the sample plate with the oxide layer removed therefrom on a test piece tooling tray; determining solution data by adding the type and component range of a corrosion inhibitor for the anti-corrosion coating to be prepared; configuring a solution according to the solution data, adding the solution to a corresponding test tube, and mixing it with a coating primer to obtain a coating solution; dripping the configured coating solution onto the surface of the sample plate to be coated by a pipette, and completing the coating by a coating robot of a high-throughput anti-corrosion coating preparation platform; transferring the coated sample plate to an ultraviolet irradiation station, and selecting different wavelengths and different times for irradiation according to different liquids to complete the heating and curing of the anti-corrosion coating; after the irradiation time is reached, the truss robot moves the entire test piece tooling tray to a fixed position to complete the preparation of the anti-corrosion coating.

Description

Technical Field

[0001] The present application relates to the technical field of anti-corrosion coating preparation, and in particular, to a method for high-throughput preparation of anti-corrosion coatings. Background Art

[0002] Anti-corrosion coating refers to a covering layer applied on the metal surface to isolate it from the surrounding medium in order to control the corrosion of the metal material. Currently, the coatings used for corrosion control can be mainly divided into sacrificial coatings, corrosion inhibition coatings, conductive coatings, barrier coatings, etc.

[0003] Among them, the corrosion-inhibiting coating mainly realizes the anti-corrosion function by compounding and mixing one corrosion inhibitor or two or more corrosion inhibitors and primer coating. However, these traditional anti-corrosion coatings have single functions, and there are many corrosion factors in each environment with their own characteristics. It is difficult for existing coatings to simultaneously meet the anti-corrosion problems under different environmental conditions.

[0004] In addition, existing studies have shown that many parameters such as the content, type, and compounding ratio of different corrosion inhibitors have a significant impact on the polymerization state and performance of the anti-corrosion coating. Screening such a variety of variables and combinations of potential corrosion inhibitors according to different service environments requires a lot of time and manpower and material resources. The existing technology mainly uses traditional manual methods to screen the proportions one by one, compound and mix them, and evaluate the performance, which has caused great trouble to the research and development of anti-corrosion coatings.

[0005] Although some patents have shown that some domestic and foreign laboratories can currently use automated anti-corrosion coating preparation equipment or robots to carry out coating preparation processes, the robot's movement / perception capabilities and intelligence levels are very limited, the movements are single, the reliability is low, and the adaptability is poor. It is difficult to achieve high-precision control and multi-task collaborative operations in complex multi-scenario material experimental tasks, and it is impossible to customize and quickly complete the selection of different types of corrosion inhibitors, the addition ratio compounding, and performance characterization according to the corrosion conditions in different environments.

[0006] The existing technology has poor design and exploration capabilities for the raw materials, preparation process, structure, etc. of the coating, and is unable to quickly determine the optimal structure for adding corrosion inhibitors to the coating, which also limits the speed of research and development of anti-corrosion coating materials; at the same time, in the coating preparation process, due to the different viscosities and fluidities of different types of corrosion inhibitor compound solutions, traditional automated preparation equipment is unable to intelligently select the preparation method based on the fluidity and viscosity of the raw materials, and has high requirements for the surface tension of the coating substrate, so the equipment has a small application range. Summary of the invention

[0007] The purpose of this application is to provide a method for high-throughput preparation of anti-corrosion coatings to solve the technical problem in the prior art that it is impossible to quickly and accurately screen the types of corrosion inhibitors and compound different types of corrosion inhibitors to meet the specific performance requirements of anti-corrosion coatings. The high-throughput preparation of anti-corrosion coatings compounded with different corrosion inhibitors is achieved at a low cost. At the same time, the robot is equipped with a visual monitoring and recognition system, which can intelligently select the brushing method or modify the substrate according to the fluidity and viscosity of different solutions, so that it is easy to prepare the coating by roller coating, and the application range is wider.

[0008] In order to achieve the above object, the present invention provides a method for preparing an anti-corrosion coating with high throughput, comprising the following steps:

[0009] Treat the surface of the sample plate to be painted, and place the sample plate with the oxide layer removed on the test piece tooling tray;

[0010] Determine the solution data by adding the type and composition range of the corrosion inhibitor to be used in the preparation of the anti-corrosion coating;

[0011] Prepare the solution according to the solution data, add the solution into the corresponding test tube using the high-throughput anti-corrosion coating preparation platform, and mix it with the coating primer to obtain the coating solution;

[0012] The prepared coating solution is dripped onto the surface of the sample plate to be coated by a pipette, and the coating is completed by the coating robot of the high-throughput anti-corrosion coating preparation platform;

[0013] The coated sample plate is transferred to the UV irradiation station. According to different liquids, different wavelengths and different irradiation times are selected to complete the heating and curing of the anti-corrosion coating;

[0014] After the irradiation time is reached, the test piece tooling tray is moved out of the UV irradiation station, and the truss manipulator moves the entire test piece tooling tray to a fixed position to complete the preparation of the anti-corrosion coating;

[0015] The high-throughput anti-corrosion coating preparation platform includes a raw material bottle feeding component, a robot motion component, a roller coating truss component and a control component;

[0016] The robot motion components include a liquid taking robot arm, a rolling coating robot arm, a cover opening robot arm and a robot visual monitoring system;

[0017] The robot visual monitoring system can determine whether ion spraying surface treatment is required based on the spreading state of the coating on the surface of the sample plate;

[0018] The liquid collection robot arm includes a gripper assembly, a pipette gun, a pipette tip holder, and a shaker. The pipette gun includes a single-row pipette gun, which can absorb different solutions at one time, or the outer pipette guns in the single-row pipette gun can independently absorb different solutions or the same solution.

[0019] The roller coating robot arm can, under the control of the robot visual monitoring system and the control component, determine the coating application method of roller coating, drip coating or spray coating according to the fluidity of the solution.

[0020] In an optional embodiment, the control component is electrically connected to the robot motion component and the robot visual monitoring system.

[0021] In an optional embodiment, the raw material bottle loading assembly includes a raw material bottle truss, a raw material bottle electric claw, a floating mechanism, a solution bottle tray, a positioning block, a drag chain and a clamping mechanism. An induction sensor is arranged at the lower part of the solution bottle tray, and a photoelectric switch is arranged correspondingly on the raw material bottle truss. The induction sensor and the photoelectric switch are electrically connected to the control assembly respectively.

[0022] In an optional embodiment, after the raw liquid bottle is manually placed on the solution bottle tray, the induction sensor recognizes that the raw liquid bottle has been placed therein, and the raw material bottle truss grabs the raw liquid bottle to the clamping mechanism for clamping. After clamping, the raw material bottle electric claw rotates to unscrew the bottle cap, and the raw material bottle truss returns the bottle cap to the standby position, and the control component sends a liquid collection signal to the robot motion component to collect liquid. After the liquid collection is completed, the robot motion component sends a signal to the control component again, and the raw material bottle truss tightens the bottle cap again, and the clamping mechanism releases the raw liquid bottle and puts it back in place.

[0023] In an optional embodiment, the gripper assembly, the pipette gun, the shaker, and the roller coating truss assembly are electrically connected to the control assembly, respectively.

[0024] In an optional embodiment, after manually placing the pipette tip on the pipette tip holder, the gripper assembly grips the pipette tip and takes liquid through the pipette gun, and after taking liquid, the liquid taking mechanical arm moves to the shaker and puts the liquid into the test tube, and the shaker performs a shaking action;

[0025] After shaking, the gripper assembly of the liquid collection robot arm drives the pipette gun to collect liquid. At the same time, the roller coating truss assembly clamps the tray and places it on the roller coating station. After placement, the liquid collection robot arm controls the pipette gun to drip quantitatively. After all reagents are dripped, the waste pipette tips are discarded.

[0026] In an optional embodiment, the coating truss assembly includes a coating truss, a coating electric claw, a hollow rotating platform, a laser rangefinder, a camera, a coating tray, a roller bracket and a UV curing assembly, and the coating truss, the laser rangefinder, the camera and the coating electric claw are electrically connected to the control assembly respectively.

[0027] In an optional embodiment, the coating tray and the roller are manually placed in a fixed position, the coating truss is moved above the tray to be picked up, the laser rangefinder determines the position of the coating tray, the camera scans the code to bind the coating tray, the liquid taking robot arm drops the reagent, the coating truss clamps the roller, the sensor determines whether there is a roller at the coating station, the coating electric claw clamps the roller and then performs coating, and after coating is completed, the coating electric claw places the roller at the unloading station.

[0028] In an optional embodiment, a material unloading station is provided at the lower part of the roller bracket, a through-beam sensor is provided on the material unloading station, and the through-beam sensor is electrically connected to the control component;

[0029] After the through-beam sensor detects that the roller is placed in the unloading station, the coating truss is reset, and the coating tray enters the ultraviolet curing component for irradiation and curing. After the curing time is reached, the coating tray is pushed out, and the coating electric claw clamps the coating tray, and the position of the coating tray is determined by the laser rangefinder to complete the unloading.

[0030] The ultraviolet curing component comprises an ultraviolet lamp, and the ultraviolet lamp is electrically connected to the control component.

[0031] In an optional embodiment, a high-throughput spraying mechanism is further included, and the high-throughput spraying mechanism includes a quantitative delivery mechanism, a disposable needle tube, a nozzle lifting mechanism and an atomizing nozzle;

[0032] The robot motion component can drive the quantitative conveying mechanism to install a disposable syringe and can absorb the liquid that needs to be sprayed. After absorbing the liquid, the disposable syringe can be inserted into the spray atomization area of ​​the nozzle lifting mechanism under the drive of the robot motion component, and combined with the atomization nozzle to spray the liquid onto the carrier surface.

[0033] Through the method for high-throughput preparation of anti-corrosion coatings based on photocuring technology in the present invention, relying on a high-throughput anti-corrosion coating preparation platform, high-throughput technology can be used to quickly and efficiently complete the compounding of different coating components, as well as the coating and transfer curing processes of a large number of anti-corrosion coatings with different formulas, and complete the intelligent optimization of coating formulas and experimental plans / processes, which solves the problems of complex compounding systems of resins, curing agents, fillers and other complex components in the existing coating preparation process, which is difficult to optimize and time-consuming to prepare samples. At the same time, the intelligent robot can be enabled to have the ability of multi-task collaboration, rapid conversion of multiple processes, and obstacle avoidance in a small space during the material preparation experiment, thereby realizing remote operation and real-time monitoring of the experimental process, greatly saving labor costs, and realizing automated mass production and processing of coatings.

[0034] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a schematic diagram of the structure of the high-throughput anti-corrosion coating preparation platform in this application;

[0037] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0038] Figure 3 It is a structural schematic diagram of the raw material bottle feeding component;

[0039] Figure 4 It is a structural schematic diagram of the liquid taking mechanical arm;

[0040] Figure 5 It is a structural schematic diagram of a roller coating robot arm;

[0041] Figure 6 It is a structural schematic diagram of a high-throughput spraying mechanism;

[0042] Figure 7 Schematic diagram of the coordination between the high-throughput spraying mechanism and the robot motion components.

[0043] icon:

[0044] 1-raw material bottle loading assembly; 11-raw material bottle truss; 12-raw material bottle electric claw; 13-floating mechanism; 14-solution bottle tray; 15-positioning block; 16-drag chain; 17-clamping mechanism;

[0045] 2-Robot action component;

[0046] 3-Roll coating truss assembly; 31-Roll coating truss; 32-Roll coating electric claw; 33-Hollow rotating platform; 34-Laser rangefinder; 35-Camera; 36-Roll coating tray; 37-Roller bracket; 38-UV curing assembly;

[0047] 4-liquid collection robot; 41-grip assembly; 42-pipette gun; 43-pipette tip holder; 44-shaker;

[0048] 5-Roller coating robot arm;

[0049] 6-Opening robot arm;

[0050] 7-high throughput spraying mechanism; 71-quantitative delivery mechanism; 72-disposable needle tube; 73-spray head lifting mechanism; 74-atomizing nozzle. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0053] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] The method for preparing an anti-corrosion coating with high throughput in the present application comprises the following steps:

[0055] Treat the surface of the sample plate to be painted, and place the sample plate with the oxide layer removed on the test piece tooling tray;

[0056] Determine the solution data by adding the type and composition range of the corrosion inhibitor to be used in the preparation of the anti-corrosion coating;

[0057] Prepare the solution according to the solution data, add the solution into the corresponding test tube using the high-throughput anti-corrosion coating preparation platform, and mix it with the coating primer to obtain the coating solution;

[0058] The prepared coating solution is dripped onto the surface of the sample plate to be coated by a pipette, and the coating is completed by the coating robot of the high-throughput anti-corrosion coating preparation platform;

[0059] The coated sample plate is transferred to the UV irradiation station. According to different liquids, different wavelengths and different irradiation times are selected to complete the heating and curing of the anti-corrosion coating;

[0060] After the irradiation time is reached, the test piece tooling tray is moved out of the UV irradiation station, and the truss robot moves the entire test piece tooling tray to a fixed position to complete the preparation of the anti-corrosion coating.

[0061] See also Figure 1 , and combined with Figure 2-Figure 5 The high-throughput anti-corrosion coating preparation platform includes a raw material bottle loading component 1, a robot motion component 2, a roller coating truss component 3 and a control component;

[0062] The robot motion component 2 includes a liquid collection robot arm 4, a roller coating robot arm 5, a cover opening robot arm 6 and a robot visual monitoring system, and the control component is electrically connected to the robot motion component 2 and the robot visual monitoring system.

[0063] Specifically, the high-throughput anti-corrosion coating preparation platform is an integrated platform for the automated preparation of high-throughput anti-corrosion coatings. The oxide layer on the surface of the sample plate to be coated is removed by sandpaper polishing, and the sample is placed in a test piece tooling tray. Based on the coating spreading on the sample surface, the equipment independently determines whether to perform a plasma spraying surface treatment process to improve the subsequent coating effect.

[0064] Then, according to the type of corrosion inhibitor added and the composition range of the desired anti-corrosion coating to be prepared, a composition-configuration solution volume ratio table of the coating to be developed is determined.

[0065] According to the table data, the solutions of corresponding components in each test tube in the test tube device are configured, and the solutions are added to the corresponding test tubes using the high-throughput anti-corrosion coating automated preparation integrated platform, and the mixing work with the coating primer is completed. Subsequently, the configured coating solution is dripped onto the surface of the sample plate to be coated through the pipette gun 42, and the surface tension of the plate is modified according to the viscosity and fluidity of different solutions based on the robot visual monitoring system, and the coating is fully automatically applied through the coating robot in the high-throughput anti-corrosion coating automated preparation integrated platform.

[0066] Subsequently, the coated sample plate is transferred to the UV irradiation station. Through the programming of the control component, different wavelengths and different irradiation times are selected on the touch screen according to different liquids to complete the heating and curing of the anti-corrosion coating. After the irradiation time is reached, the pallet is automatically moved out of the irradiation station, and the truss robot moves the entire pallet to a fixed position to complete the preparation of the anti-corrosion coating.

[0067] The high-throughput anti-corrosion coating automated preparation integrated platform includes a raw material bottle loading component 1, a robot motion component 2, a roller coating truss component 3 and a control component. It can complete the coordination between various tasks and the rapid conversion between various processes during the coating preparation experiment; at the same time, it can realize remote operation and real-time monitoring of the experimental process to complete the automated preparation of the coating.

[0068] The raw material bottle loading component 1 includes a three-axis raw material bottle truss 11 (X, Y, Z axis), a raw material bottle electric claw 12, a floating mechanism 13 (including a connecting plate, a guide shaft and a spring), a solution bottle tray 14, a positioning block 15, a drag chain 16 and a clamping mechanism 17. An induction sensor is arranged at the lower part of the solution bottle tray 14, and a photoelectric switch is correspondingly arranged on the raw material bottle truss 11. The induction sensor and the photoelectric switch are electrically connected to the control component respectively.

[0069] After the original liquid bottle is manually placed on the solution bottle tray 14, the induction sensor recognizes that the original liquid bottle has been placed, and the raw material bottle truss 11 grabs the original liquid bottle to the clamping mechanism 17 for clamping. After clamping, the raw material bottle electric claw 12 rotates to unscrew the bottle cap, and the raw material bottle truss 11 returns the bottle cap to the standby position. The control component sends a liquid collection signal to the robot motion component 2 to collect liquid. After the liquid collection is completed, the robot motion component 2 sends a signal to the control component again, and the raw material bottle truss 11 tightens the bottle cap again, and the clamping mechanism 17 loosens the original liquid bottle and puts it back in place. The number of turns to unscrew or tighten the bottle cap is written in the program during the debugging stage, and no recognition feedback is required; the bottle clamping and loosening are written in the program during the debugging stage, with fixed positions, actions and beats.

[0070] The liquid collection robot 4 includes a gripper assembly 41, a liquid transfer gun 42, a liquid transfer tip holder 43 and a shaker 44. The gripper assembly 41, the liquid transfer gun 42, the shaker 44 and the roller coating truss assembly 3 are electrically connected to the control assembly respectively.

[0071] After the pipette tips are manually placed in the pipette tip holder 43 (they need to be fully placed, this step requires manual inspection), when the stock liquid bottle truss starts to take the bottle, the corresponding sensor below detects that the stock liquid bottle is taken out. At this time, the PLC of the control component sends a take-out signal to the robot, and the gripper component 41 starts to grip the pipette tip. After the gripping is completed, it waits until the cap of the stock liquid bottle is unscrewed, and the truss returns to the standby position. The photoelectric switch corresponding to the X-axis of the truss detects that the truss has reached the standby position, and the PLC sends a signal to the robot, and the robot will perform the liquid taking action process, and the liquid taking robot arm 4 drives the pipette gun 42 to the timing of the liquid taking point. The robot sends a signal to the PLC, and the pipette 42 takes the liquid. When the taken volume is reached, the pipette 42 sends a signal to the PLC. The PLC sends a signal to the robot to perform the shaking action process and to the stock solution bottle truss to tighten the bottle cap and put it back in place. The robot reaches the position of the shaker 44, and the robot sends a signal to the PLC, and the pipette 42 discharges the liquid into the test tube. When the solution is discharged, the pipette 42 sends a signal to the PLC. At this time, the robot reaches the standby position set by the program, and the robot sends a signal to the PLC, and the shaker 44 shakes the liquid. The number of shaking circles and the frequency have been set in the program. After the set number of circles, the shaking is completed, and the PLC sends a signal to the robot and the roller coating truss 31. The robot takes the liquid. When the robot reaches the liquid taking position, it sends a signal to the PLC, and the pipette gun 42 takes the liquid. After the liquid taking is completed, the pipette gun 42 sends a signal to the PLC, and the robot takes the next step. At the same time, the roller coating truss 31 clamps the roller coating tray 36 and places it in the roller coating position. After the placement is completed, the roller coating truss 31 retreats to the standby position, and the photoelectric switch corresponding to the axis of the roller coating truss 31 detects that the truss has reached the standby position, and sends a signal to the robot to drip the reagent solution. The robot reaches the taught position After completing the position, a signal is sent to the PLC to control the pipette gun 42 to perform quantitative dripping of reagents. After dripping the reagents, the pipette gun 42 sends a signal again, and the robot proceeds to the next position. This cycle continues until all the tasks of dripping reagents are completed. After completing the process, the robot sends a signal to the PLC to open the waste plug plate. The robot reaches the designated position for discarding the waste pipette tip and sends a signal to the PLC. The pipette gun 42 pushes the pipette tip out. After pushing the pipette tip out, a signal is sent to the PLC, and a delay of a few seconds is made to ensure that the pipette tip falls completely into the waste box, and the robot returns to the standby position.

[0072] The coating truss assembly 3 includes a three-axis coating truss 31 (X, Y, Z axis), a coating electric claw 32, a hollow rotating platform 33, a laser rangefinder 34, a camera 35, a coating tray 36, a roller bracket 37 and an ultraviolet curing assembly 38. The coating truss 31, the laser rangefinder 34, the camera 35 and the coating electric claw 32 are electrically connected to the control assembly respectively.

[0073] The coating tray 36 and the roller are manually placed in a fixed position, the coating truss 31 is moved above the tray to be taken, and the laser rangefinder 34 starts to measure the distance to determine the height of the tray. The height data is transmitted to the PLC for processing to determine the position of the tray.

[0074] The camera 35 scans the code to bind the roller coating tray 36, and the scanned information is transmitted to the Ipad. After the scanning is completed, the roller coating tray 36 is grabbed and placed in the roller coating station. The robot's liquid collection arm 4 drips the reagent. After the robot completes the action, it returns to the standby position and transmits the signal to the PLC. The roller coating truss 31 clamps the roller. There are 8 rollers in total, and there are sensors at the bottom. The sensors are used to determine whether there are rollers at the 8 positions. The clamping hand of the roller coating truss 31 flips 180° and rotates the roller coating electric claw 32 to the bottom to clamp the roller. After clamping, roller coating is performed. The number and position of rolling coating are written into the program during the debugging phase. After the number of rolling coating is reached, the clamping hand puts the roller into the roller unloading station.

[0075] The unloading station is arranged at the lower part of the roller bracket 37, and includes a group of through-beam sensors, which can detect whether the roller is put in. When the roller is put in, the roller truss 31 returns to the standby position, and the tray enters the ultraviolet lamp for curing. When the set curing time is reached, the tray is pushed out, and at the same time, the gripping hand of the roller truss 31 is turned 180°, and the tray gripping hand is rotated downward to grip the tray. When it reaches the unloading position of the roller tray 36, the laser rangefinder measures the distance to determine the height below, and the height data is transmitted to the PLC for processing to determine the tray position and complete the unloading. After all the above processes are completed for all trays in turn, the experiment ends and the experimental data is automatically uploaded to the iPad.

[0076] Compared with the existing manual coating preparation and painting process, the present invention can use high-throughput technology to complete the compounding of different types of coating formulas in large quantities at the same time, reducing the labor cost and time cost of screening coating formulas. Through the mutual cooperation between the mechanical arms, the process steps of coating, transfer and coating curing of metal sheet materials of different types and sizes can be automatically, quickly and efficiently completed. The construction and processing of the anti-corrosion coating on the surface of the material is completed through automatic control, avoiding the thickness error caused by manual operation, and speeding up the quantitative processing time of the coating.

[0077] The following is an explanation of the process for a specific application:

[0078] Metal sheet materials of different sizes with a length, width and height of 20 mm×20 mm×3 mm or 10 mm×10 mm×3 mm are polished with sandpaper or chemically treated to remove the oxide layer and other stains on the surface, and then the metal sheet materials to be painted are grabbed by the roller coating robot arm 5 and placed on the empty tray of the test piece. The reagent bottle opening robot arm 6 can automatically open the reagent bottle by cooperating with the reagent bottle tooling and the reagent bottle clamping position, and cooperate with the liquid taking robot arm to automatically complete the compounding of multiple different coating components in different proportions at one time by using high-throughput technology; then the liquid taking robot arm uses the servo pipette gun 42 to complete the absorption of the required coating solution, and the servo motor, piston, detection sensor, etc. inside the servo pipette gun 42 are used to realize automatic quantitative and accurate liquid extraction and titration. Then, the mixed solution can be quantitatively absorbed and dropped on the test piece to be coated, and then the brushing robot arm grabs the roller coating rod of the required size at the brushing roller tooling to complete the brushing work of the surface coating of the metal sheet material.

[0079] Because the test piece is placed on a test piece tray with a positioning groove, there is a positioning pin at the bottom of the test piece tray, which can cooperate with the tooling of the ultraviolet irradiation station to realize the positioning of the tray; therefore, the coated metal sheet material can be moved from the titration position to under the ultraviolet lamp, and the ultraviolet irradiation time and wavelength can be set according to different types of solutions through PLC programming combined with the touch screen to complete the photocuring process of the anti-corrosion coating. After the irradiation time is reached, the tray will automatically move out of the irradiation station, and the roller coating electric claw 32 of the roller coating truss 31 will move the entire tray to a fixed position for standby use.

[0080] The integrated platform for automated preparation of high-throughput anti-corrosion coating materials consists of an external frame and internal equipment. The overall dimensions (length × width × height) are 2240 × 1600 × 2230 mm. The external frame includes three glass lift doors, one at the front, one at the back and one at the side. The lift doors are driven by electric cylinders. The two lower lift doors open separately. The overall external frame is supported by four Fomar wheels, which can realize the overall movement of the equipment.

[0081] The internal equipment includes a liquid collection robot arm, a pipette assembly component, a pipette tip holder 43, a pipette tip waste drop port, a reagent bottle opening robot arm, a reagent bottle clamping position, a reagent bottle tooling, a test tube solution mixing device, a full test piece tray, an empty test piece tray, a brushing robot arm, a brushing roller tooling, a waste brush roller drop port, a waste brush roller storage bucket, a cooling fan, an ultraviolet irradiation station and a cooling fan.

[0082] A total of 9 stock liquid bottles are set up in the whole device, which are placed in the marked tooling. After the test setting is completed, the system can automatically calculate the type of stock liquid required for this test and the volume of each stock liquid, and give prompts on the touch screen: each stock liquid bottle is placed in the position of the tooling, and the operator places the stock liquid bottle in the corresponding tooling according to the prompts; when taking the stock liquid bottle, the raw material bottle truss 11 takes the stock liquid bottle from the tooling according to the set position, places it in the lid opening station, and completes the lid opening. After taking the liquid, screw the lid on, and the raw material bottle electric claw 12 will put the stock liquid bottle back into the tooling. The reagent bottle tooling described therein can complete the placement of 9 reagent bottles with a diameter of 57mm and a height of 100mm at the same time. There is a spacing of about 90mm between each reagent bottle, and each reagent bottle is independent of each other.

[0083] The test tube solution mixing device is 270mm long and 212mm wide. The bottom is equipped with a test tube mixing shaker 44 to accelerate the mixing of the solution. It can accommodate 40 test tubes of φ18×100mm at the same time, and can automatically complete the mixing of the corrosion inhibitor and the paint primer in conjunction with the liquid taking robot arm. The mixing work is achieved by the rotation of the motor to drive the eccentric shaft, so that the tray moves in a circular motion; the shaking frequency can be achieved by adjusting the motor speed.

[0084] After the solution in the test tube is mixed, 9 solution bottles are placed in the stock solution bottle tray, and the reagent bottle opening robot arm will clamp the solution bottle, and then place it in the bottle body clamping device. After being placed, the clamping block clamps the bottle body, and then the opening robot arm 6 clamps the bottle cap to rotate counterclockwise and move up, and the bottle cap is opened. The opening robot arm 6 clamps the bottle cap to avoid other positions, and the liquid taking robot arm 4 takes the liquid. After the liquid is taken, the opening robot arm 6 puts the bottle cap back, rotates clockwise and moves down, and tightens the bottle cap. After tightening, the bottle body clamping device is opened, and the raw material bottle electric claw 12 puts the solution bottle back to its original position. The opening is completed by the opening robot arm 6 clamping the bottle cap and rotating it counterclockwise, and the opening robot arm 6 has a floating mechanism 13, which can move in the Z-axis direction while rotating counterclockwise, so as to achieve the synchronous movement of counterclockwise rotation and upward movement or clockwise rotation and downward movement. And the position of the solution bottle tray 14 is fixed, and the bottle body clamping device is also fixed. After the teaching is completed, the position will not change. All picking positions are completed in the early teaching, written into the program, and the position and program are fixed.

[0085] The reagent bottle opening robot arm 6 is composed of a three-axis truss Z-axis, a rotating gripper mounting plate, a three-axis truss X-axis support plate, an opening truss guard plate, an opening truss guard plate, an opening truss guard plate, a drag chain 16 bracket, a linear module, a drag chain 16, a 120°C small countersunk rivet nut (M3×8.5), a rotating gripper assembly component, a rotating gripper guide rail adapter plate, a rotating gripper floating plate, a guide rod mounting block, a guide rail limit block, and a spring stopper. It is a truss robot arm composed of a servo linear module, and is equipped with a raw material bottle electric gripper 12 to complete bottle grabbing and opening. At the same time, two high-precision ball linear guides are installed inside the linear module to complete the precise positioning of the roller coating robot arm 5 and the reagent opening robot arm; the driving method adopts a ball screw, and the screw nut is pre-tightened to ensure that there is basically zero side clearance in the positive and negative directions; the power part adopts a servo motor matched with a high-precision encoder; the truss robot structure is welded with steel and finely processed on a CNC machine tool to ensure processing accuracy; combined with the above-mentioned quality control and assembly control, the truss robot precision positioning accuracy requirement of ±0.1mm is achieved.

[0086] The bottom of the liquid collection robot arm is equipped with a pipette with 5 single pipetting channels. The pipette consists of three pipette mounting plates, a robot link flange, a pipette shield, a hexagonal cylindrical head screw, a standard elastic washer, a hexagonal flat round head screw, and a pipeline package bracket. The maximum pipetting volume of a single channel is 5mL. Five pipette tips can be installed under the pipette, and each pipette tip is used independently. The pipette tip tooling is 320mm long and 200mm wide, and can accommodate 50 pipette tips with a volume of 5mL. The interior is composed of a pipette holder bottom plate, a PIT placement plate, a TIP holder side plate, a pipette tip placement middle plate, a hexagonal cylindrical head screw, and a hexagonal flat round head screw, and can complete the aspiration of at least five different solutions at one time.

[0087] The liquid taking robot 4 quantitatively takes liquid using a servo pipette 42. The servo pipette 42 is a device that can automatically and quantitatively absorb and discharge liquids in cooperation with a robot. It realizes the functions of accurate liquid taking and titration through internal servo motors, pistons, detection sensors, etc. The quantitative pipetting can be transmitted to the PLC control system through the iPad. The PLC controls the servo motor inside the pipette 42 to meet the pipetting requirements of different capacities and different types of solutions. The solution bottles are placed in the tray manually in the early stage. 9 solution bottles can be placed. The types of solutions in 9 positions are input on the iPad. After the setting is completed, the selection of different types of solutions can be realized.

[0088] In order to comply with the concept of high-throughput technology and realize the diversification of solution configuration concentration echelon changes and type changes, while retaining the function of the ordinary single-row pipette 42 to absorb different solutions at one time, additional functions different from the ordinary single-row pipette 42 are added, that is, the leftmost gun head under the pipette can independently complete the absorption of different solutions and repeated absorption of the same solution and the dripping function of different test tubes, making the absorption process more flexible. While ensuring work efficiency, it also ensures the selection of coating formula solutions with different concentration echelons of the same solution in the same row of test tubes, which is in line with the design concept of high-throughput coating preparation.

[0089] The roller coating tray 36 tooling tray is 200mm long and 120mm wide, which can meet the placement of two specifications of test pieces, including 8 trays for 10×10mm test pieces (the number of test pieces that can be placed: 20) and 8 trays for 20×20mm test pieces (the number of test pieces that can be placed: 10).

[0090] The paint brush roller tooling is 100 mm long and 51 mm wide, and there are 2 of them, which can store a total of 8 paint brush rollers with an outer diameter of φ19 mm.

[0091] The roller coating electric claw 32 is mainly composed of a drag chain 16, a linear module, a 120°C small countersunk rivet nut (M3×8.5), a shield link plate, a Y-axis mounting seat for a painting truss, a gripper adapter, a QR code distance measurement bracket, a vertical drag chain 16 mounting plate, a horizontal drag chain 16 mounting plate, a Y-axis drag chain 16 mounting plate, a painting truss Z-axis mounting plate, a painting Y-axis module mounting plate, a painting truss mounting plate, a shield, a drag chain 16 slot, a laser distance measurement sensor mounting plate, and a code scanning camera 35. Similarly, two high Precision ball linear guides ensure the rigidity of the moving parts; ball screws are used for driving, and the screw nuts are pre-tightened to ensure that there is basically zero side clearance in the positive and negative directions; the power part uses a servo motor matched with a high-precision encoder; the truss manipulator structure is welded with steel and finely processed on a CNC machine to ensure processing accuracy; combined with the above-mentioned quality control and assembly control, the roller coating electric claw 32 can achieve the positioning accuracy requirement of ±0.1mm, and accurately complete the pallet grabbing, brush roller grabbing, and brushing work. Among them, brush roller rods of different sizes are placed on the brush roller tooling, and the corresponding brush roller can be selected according to the size of the sample to be brushed by inputting instructions through the iPad. The barcode scanning camera 35 can scan the QR code on each carrier and record the sample status in the program, such as: sample coating status, number of coating layers, etc.

[0092] Traditional coating preparation automation equipment has a single coating method and is only suitable for coating fixed types of solutions, with a single application scenario. In order to increase the breadth of use of the equipment and diversify its functions, a robot autonomous monitoring and judgment system has been added to the equipment. The robot can automatically judge and select the mixing conditions according to the fluidity of the solution during the mixing process, and consciously judge the coating method of rolling or dripping based on the mixing intensity and time. This function ensures a more uniform coating while expanding the breadth of the equipment's use.

[0093] During the whole sample coating process, after the liquid is dripped onto the test piece by the liquid taking mechanical arm 4, the roller coating electric claw 32 takes out the coating roller from the coating roller bracket, presses the coating roller onto the test piece according to the set position, and moves according to the set path to complete the coating work. At the same time, the test piece is placed on a test piece tray with a positioning groove. There are positioning pins under the test piece tray, which can cooperate with the tooling of the ultraviolet irradiation station to realize the positioning of the tray; the tray tooling is installed on a servo linear module, and the linear module can set the stop position to move the test piece from the titration position to the bottom of the ultraviolet lamp.

[0094] The UV irradiation station is 150mm long and 100mm wide, and can meet the requirements of two types of sample irradiation at the same time: one is 10mmx10mm sample, irradiating 25 samples at the same time; the other is 20mmx20mm sample, irradiating 10 sample test pieces at the same time. The UV irradiation time and wavelength are set through PLC programming and touch screen according to the requirements of different coating formula solutions. There are two wavelengths of UV irradiation, namely 365nm and 270nm. The light intensity is continuously controlled by analog quantity, and the maximum light intensity is 2000MW / cm2 to ensure the complete curing of the coating. After the irradiation time reaches the coating to complete the light curing, the tray relies on the positioning pin at the bottom to automatically move out of the irradiation station, and the truss robot moves the entire tray to a fixed position.

[0095] In the equipment, the UV curing device can be used alone. Therefore, in addition to cooperating to complete the light curing process of the coating after brushing, it can also be used as equipment for coating aging resistance testing by switching the light source, cooperating or independently. Generally, the weathering test of natural aging of coatings lasts for a long time. By this means, artificial accelerated weathering test can be achieved, giving the entire equipment an additional new function in addition to the function of completing coating preparation.

[0096] Among them, the liquid collection robot has 5 sets of servo pipettes 42 placed on its hands. The amount of liquid sucked and discharged each time is controlled by the pipettes 42, and the solution addition ratio in different reagent bottles is completed intelligently and accurately. The maximum capacity of the pipette 42 is 5mL, and the accuracy can reach 0.1mL. Using high-throughput technology to quickly and efficiently complete the compounding of different coating solutions, the entire device can complete the construction and processing of anti-corrosion coatings through automatic control, avoiding errors in manual operation, and realizing automated mass production and processing of coatings.

[0097] When the robot vision monitoring system determines that spraying is required, the robot motion component 2 drives the high-throughput spraying mechanism 7 to spray the liquid on the sample carrier.

[0098] Specifically, see Figure 6-Figure 7 The high-throughput spraying mechanism 7 includes a quantitative delivery mechanism 71, a disposable needle tube 72, a nozzle lifting mechanism 73 and an atomizing nozzle 74;

[0099] The robot motion component 2 can drive the quantitative conveying mechanism 71 to install the disposable needle tube 72, and can absorb the liquid that needs to be sprayed. After absorbing the liquid, the disposable needle tube 72 can be inserted into the spray atomization area of ​​the nozzle lifting mechanism 73 under the drive of the robot motion component 2, and combined with the atomization nozzle 74 to spray the liquid onto the carrier surface.

[0100] In the specific process, the robot motion component 2 drives the quantitative conveying mechanism 71 to install a disposable syringe 72 to the liquid preparation area to absorb the liquid to be sprayed; then the robot inserts the disposable syringe 72 after the liquid is absorbed into the spray atomization area of ​​the nozzle lifting mechanism 73.

[0101] Compressed air is introduced into the atomizing nozzle 74. After the air pressure is stabilized, the quantitative delivery mechanism 71 pushes out the liquid in the disposable needle tube 72 slowly and uniformly, mixes with the air, and is atomized and sprayed onto the surface of the carrier.

[0102] Then the robot motion component 2 moves together with the nozzle lifting mechanism 73 to move the atomizing nozzle 74 along the surface of the carrier so that the atomized liquid covers the entire surface of the carrier. After the spraying is completed, the robot motion component 2 moves to the waste syringe recycling area and automatically pushes out the used syringe.

[0103] The liquid spraying operation carried out after the judgment can evenly cover the surface of complex shapes, avoiding the problem of uneven coating that may be caused by manual brushing or rolling. It is particularly suitable for the coating needs of irregular objects or small area samples.

[0104] At the same time, spraying is easy to operate and fast, suitable for large-scale production and batch coating. Compared with other traditional coating methods, spraying can usually improve work efficiency and save time. From the coating level, spraying can be applied to various substrates, has low requirements on the substrate surface, strong adaptability, and can effectively meet the needs of different surfaces and coatings. In the spraying process, the thickness of the coating can be adjusted at any time according to different functional requirements; at the same time, spraying technology can minimize the waste of paint, especially in high-throughput automated spraying process, the amount of paint used is more accurate than manual painting, and the conversion rate of paint is higher.

[0105] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0106] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for preparing an anti-corrosion coating with high throughput, characterized in that: The following steps are involved: Treat the surface of the sample plate to be painted, and place the sample plate with the oxide layer removed on the test piece tooling tray; Determine the solution data by adding the type and composition range of the corrosion inhibitor to be used in the preparation of the anti-corrosion coating; Prepare the solution according to the solution data, add the solution into the corresponding test tube using the high-throughput anti-corrosion coating preparation platform, and mix it with the coating primer to obtain the coating solution; The prepared coating solution is dripped onto the surface of the sample plate to be coated by a pipette, and the coating is completed by the coating robot of the high-throughput anti-corrosion coating preparation platform; The coated sample plate is transferred to the UV irradiation station. According to different liquids, different wavelengths and different irradiation times are selected to complete the heating and curing of the anti-corrosion coating; After the irradiation time is reached, the test piece tooling tray is moved out of the UV irradiation station, and the truss manipulator moves the entire test piece tooling tray to a fixed position to complete the preparation of the anti-corrosion coating; The high-throughput anti-corrosion coating preparation platform includes a raw material bottle feeding component, a robot motion component, a roller coating truss component and a control component; The robot motion components include a liquid taking robot arm, a roller coating robot arm, a cover opening robot arm and a robot visual monitoring system; The robot visual monitoring system can determine whether ion spraying surface treatment is required based on the spreading state of the coating on the surface of the sample plate; The liquid collection robot arm includes a gripper assembly, a pipette gun, a pipette tip holder, and a shaker. The pipette gun includes a single-row pipette gun, which can absorb different solutions at one time, or the outer pipette guns in the single-row pipette gun can independently absorb different solutions or the same solution. The roller coating robot arm can, under the control of the robot visual monitoring system and the control component, determine the coating application method of roller coating, drip coating or spray coating according to the fluidity of the solution; The coating truss assembly includes a coating truss, a coating electric claw, a hollow rotating platform, a laser rangefinder, a camera, a coating tray, a roller bracket and an ultraviolet curing assembly, and the coating truss, the laser rangefinder, the camera and the coating electric claw are electrically connected to the control assembly respectively; The coating tray and roller are placed in a fixed position manually, the coating truss moves to the top of the tray to be picked up, the laser rangefinder determines the position of the coating tray, the camera scans the code to bind the coating tray, the liquid taking robot arm drops the reagent, the coating truss clamps the roller, the sensor determines whether there is a roller at the coating station, the coating electric claw clamps the roller and then coating is performed. After coating is completed, the coating electric claw places the roller at the unloading station.

2. The method for high-throughput preparation of anti-corrosion coating according to claim 1, characterized in that: The control component is electrically connected to the robot motion component and the robot visual monitoring system.

3. The method for high-throughput preparation of anti-corrosion coating according to claim 2, characterized in that: The raw material bottle loading assembly includes a raw material bottle truss, a raw material bottle electric claw, a floating mechanism, a solution bottle tray, a positioning block, a drag chain and a clamping mechanism. An induction sensor is arranged at the lower part of the solution bottle tray, and a photoelectric switch is arranged correspondingly on the raw material bottle truss. The induction sensor and the photoelectric switch are electrically connected to the control assembly respectively.

4. The method for high-throughput preparation of anti-corrosion coating according to claim 3, characterized in that: After the raw liquid bottle is manually placed on the solution bottle tray, the induction sensor recognizes that the raw liquid bottle has been placed, and the raw material bottle truss grabs the raw liquid bottle to the clamping mechanism for clamping. After clamping, the raw material bottle electric claw rotates to unscrew the bottle cap, and the raw material bottle truss returns the bottle cap to the standby position, and the control component sends a liquid collection signal to the robot action component to collect liquid. After the liquid collection is completed, the robot action component sends a signal to the control component again, and the raw material bottle truss tightens the bottle cap again, and the clamping mechanism releases the raw liquid bottle and puts it back in place.

5. The method for high-throughput preparation of anti-corrosion coating according to claim 2, characterized in that: The gripper assembly, the pipetting gun, the shaker and the roller coating truss assembly are electrically connected to the control assembly respectively.

6. The method for high-throughput preparation of anti-corrosion coating according to claim 5, characterized in that: After the pipette tip is manually placed on the pipette tip holder, the gripper assembly grips the pipette tip and takes liquid through the pipette gun. After taking liquid, the liquid taking mechanical arm moves to the shaker and puts the liquid into the test tube, and the shaker performs a shaking action; After shaking, the gripper assembly of the liquid collection robot arm drives the pipette gun to collect liquid. At the same time, the roller coating truss assembly clamps the tray and places it on the roller coating station. After placement, the liquid collection robot arm controls the pipette gun to drip quantitatively. After all reagents are dripped, the waste pipette tips are discarded.

7. The high-throughput method for preparing an anti-corrosion coating according to claim 1, characterized in that: The unloading station is arranged at the lower part of the roller bracket, and a beam sensor is arranged on the unloading station, and the beam sensor is electrically connected to the control component; After the through-beam sensor detects that the roller is placed in the unloading station, the coating truss is reset, and the coating tray enters the ultraviolet curing component for irradiation and curing. After the curing time is reached, the coating tray is pushed out, and the coating electric claw clamps the coating tray, and the position of the coating tray is determined by the laser rangefinder to complete the unloading. The ultraviolet curing component comprises an ultraviolet lamp, and the ultraviolet lamp is electrically connected to the control component.

8. The high-throughput method for preparing an anti-corrosion coating according to claim 1, characterized in that: It also includes a high-throughput spraying mechanism, which includes a quantitative delivery mechanism, a disposable needle tube, a nozzle lifting mechanism and an atomizing nozzle; The robot motion component can drive the quantitative conveying mechanism to install a disposable syringe and can absorb the liquid that needs to be sprayed. After absorbing the liquid, the disposable syringe can be inserted into the spray atomization area of ​​the nozzle lifting mechanism under the drive of the robot motion component, and combined with the atomization nozzle to spray the liquid onto the carrier surface.

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