Conductive paste fabrication system and control method for conductive paste fabrication system

Abstract

This embodiment relates to a conductive paste production system and a control method for the conductive paste production system. By setting the amount of liquid raw materials, a fixed quantity of liquid raw materials is pumped into the paste tank. Graphite and carbon black are added, along with a dispersant. The weight is set, and the paste machine automatically draws in the dispersant. The dispersant intake error is within 0.3%. The mixer inside the paste machine simultaneously runs a sand mill for coarse grinding and a fine grinding mill for fine grinding. Based on real-time paste monitoring data, if the results exceed expectations, the formula strategy is automatically adjusted to avoid risks such as paste quality degradation or even scrap. Specifically, the sand mill rotor speed can be selected from 300 rpm / min to 500 rpm / min. Generally, grinding time is inversely proportional to the rotor speed. When the coarse grinding product's fineness is lower than the fine grinding threshold, the coarse grinding product is introduced into the fine grinding tank for fine grinding to produce the target product. This ensures both grinding fineness and grinding efficiency. The paste production scheme of this application has high production efficiency and a high yield.

Description

Technical Field

[0001] This application relates to the field of adhesive manufacturing technology, and in particular to a conductive paste production system and a control method for the conductive paste production system. Background Technology

[0002] Adhesive-making machines have a wide range of applications in industrial production, mainly in the fields of lithium battery materials, adhesives, pigments, inks, cosmetics, pharmaceuticals, and food.

[0003] Solid materials are typically received from a powder feeding device into a glue-making machine using positive pressure or gravity. Then, a magnetic pump is used to draw solvent from a storage tank into the glue-making machine through a pipeline system. A mixer is used to slowly mix the solid materials and solvent. After mixing for a certain period of time, the mixer is switched to a high-speed dispersion disc to disperse the particles and obtain the final slurry after a certain dispersion period.

[0004] Traditional adhesive mixing machines involve timed stirring and dispersion, followed by a self-circulating tank process using a sand mill to finely grind graphite, thereby improving the dispersibility and conductivity of the conductive adhesive. However, this traditional technique suffers from low production efficiency and low yield. Therefore, it is necessary to address the shortcomings of traditional adhesive mixing methods by proposing a conductive paste production system and its control method. Summary of the Invention

[0005] Therefore, it is necessary to address the shortcomings of traditional adhesive preparation methods, such as low production efficiency and low yield, and propose a conductive paste preparation system and a control method for the conductive paste preparation system.

[0006] This application provides a conductive paste fabrication system, comprising:

[0007] Liquid raw material storage tank, connected to vacuum pipeline network, nitrogen balance pipeline network and nitrogen source pipeline network;

[0008] A solid raw material dispenser is equipped with an electronic scale, which is used to measure the initial total amount of solid raw materials and the remaining mass of solid raw materials after dispensing them.

[0009] The glue-making machine is connected to the liquid raw material storage tank and the solid raw material dispenser. The glue-making machine is also connected to the vacuum pipeline network, the nitrogen balance pipeline network, and the nitrogen source pipeline network.

[0010] The dispersant storage tank is connected to the glue-making machine and is connected to a vacuum pipeline network, a nitrogen balance pipeline network, and a nitrogen source pipeline network.

[0011] A coarse grinding device includes a coarse grinding mill and a coarse grinding tank. The inlet of the coarse grinding mill is connected to the outlet of the glue-making machine, the outlet of the coarse grinding mill is connected to the inlet of the coarse grinding tank, the outlet of the coarse grinding mill is connected to the inlet of the glue-making machine, and the outlet of the coarse grinding tank is connected to the inlet of the glue-making machine. The coarse grinding tank is connected to a vacuum pipeline network, a nitrogen balance pipeline network, and a nitrogen source pipeline network.

[0012] A fine grinder, the inlet of which is connected to the outlet of the coarse grinding tank, and the fine grinder is connected to a vacuum pipeline, a nitrogen balance pipeline, and a nitrogen source pipeline;

[0013] The storage tank is connected to the outlet of the fine grinder, and the storage tank is connected to the vacuum pipeline, the nitrogen balance pipeline and the nitrogen source pipeline.

[0014] This application also provides a control method for a conductive paste manufacturing system, including:

[0015] Add the solvent into the glue-making machine;

[0016] A solid material is fed into a glue-making machine; the solid material includes one or more of graphite, carbon nanotubes, and a co-solvent.

[0017] In the glue-making machine, the solvent and solids are stirred to form a mixed agglomerate.

[0018] The dispersion disc in the glue-making machine is used to disperse the mixture of solvent and solids into clumps;

[0019] The dispersed mixed agglomerates are fed into a coarse grinding mill, and the dispersed mixed agglomerates are coarsely ground using the coarse grinding mill. The coarsely ground product is then fed into a coarse grinding tank.

[0020] The coarse grinding product is inspected for fineness. After the coarse grinding product passes the fineness inspection, the coarse grinding product in the coarse grinding tank is introduced into the ultrasonic fine grinding device.

[0021] The coarsely ground product is then finely ground using an ultrasonic fine grinding device.

[0022] The finely ground product is output as the target product.

[0023] This application relates to a conductive paste preparation system and a control method for the conductive paste preparation system. By setting the amount of liquid raw material, a quantitative amount of liquid raw material is pumped into the paste preparation tank. Graphite and carbon black are added, along with a dispersant. The weight is set, and the paste preparation machine automatically draws in the dispersant. The dispersant intake error is within 0.3%. The mixer inside the paste preparation machine simultaneously operates a sand mill for coarse grinding and a fine grinding mill for fine grinding. Based on real-time slurry monitoring data, when the effect exceeds expectations, the formula strategy is automatically adjusted to avoid risks such as slurry quality degradation or even scrapping. Specifically, since a higher mill speed results in higher grinding efficiency, increased temperature can affect particle size, which is detrimental to obtaining better particle quality. High temperatures cause particle molecular aggregation. Therefore, in the paste preparation machine, it is necessary to stir the liquid and solid raw materials, and then use a dispersion disc in the paste preparation machine to disperse the mixed clumps of liquid and solid raw materials. The initially dispersed raw material can be coarsely ground using a sand mill. Zirconia beads are selected as the grinding media in the sand mill because zirconia beads have a high specific gravity, high strength, high energy, and high grinding efficiency. The rotor speed of the sand mill can be selected from 300 rpm / min to 500 rpm / min. Generally, the grinding time is inversely proportional to the rotor speed. When the coarse grinding product has a fineness lower than the fineness threshold of the fine grinding, the coarse grinding product is introduced into the fine grinding jar for fine grinding to produce the target product. This ensures both grinding fineness and grinding efficiency. The adhesive preparation method in this application has high production efficiency and high yield. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0025] Figure 1 This is a structural connection diagram of a solid raw material dispenser for a conductive paste production system provided in one embodiment of this application.

[0026] Figure 2 This is a structural connection diagram of a vacuum storage tank for a conductive paste manufacturing system provided in one embodiment of this application.

[0027] Figure 3 This is a structural connection diagram of the glue-making machine for a conductive paste production system provided in one embodiment of this application.

[0028] Figure 4 This is a structural connection diagram of a dispersant storage tank in a conductive paste production system provided in one embodiment of this application.

[0029] Figure 5 This is a structural connection diagram of a coarse grinding device for a conductive paste preparation system provided in one embodiment of this application.

[0030] Figure 6 This is a structural connection diagram of a fine grinder for a conductive paste manufacturing system provided in one embodiment of this application.

[0031] Figure 7 This is a structural connection diagram of a fine grinder for a conductive paste manufacturing system provided in another embodiment of this application.

[0032] Figure 8 This is a structural connection diagram of a semi-finished product tank for a conductive paste manufacturing system provided in one embodiment of this application.

[0033] Figure 9 This is a structural connection diagram of a storage tank for a conductive paste production system provided in one embodiment of this application.

[0034] Figure 10 This is a flowchart illustrating a control method for a conductive paste fabrication system according to an embodiment of this application.

[0035] Figure label:

[0036] 100 - Liquid raw material storage tank; 110 - Cleaning pipeline; 120 - First magnetic pump; 130 - First filter;

[0037] 140 - Second filter; 150 - Vacuum storage tank; 160 - Third filter; 200 - Solid raw material feeder;

[0038] 210 - Electronic scale; 220 - Screw pump; 230 - Fourth filter; 240 - Fifth filter;

[0039] 250 - Back pressure device; 300 - Glue making machine; 400 - Dispersant storage tank; 500 - Coarse grinding device; 510 - Coarse grinding mill;

[0040] 520 - Coarse grinding tank; 531 - First diaphragm pump; 532 - Second diaphragm pump; 533 - Sixth filter;

[0041] 534 - Seventh filter; 535 - First coarse grinding mill; 536 - Second coarse grinding mill; 600 - Fine grinding mill;

[0042] 611 - First fine grinding jar; 612 - Second fine grinding jar; 613 - Third diaphragm pump; 614 - Fourth diaphragm pump;

[0043] 615 - First fine grinding mill; 616 - Second fine grinding mill; 700 - Storage tank; 710 - Semi-finished product tank;

[0044] 720 - Storage tank; 730 - Material pipeline network; 800 - Cleaning equipment. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0046] This application provides a conductive paste manufacturing system.

[0047] like Figures 1 to 9 As shown in one embodiment of this application, a conductive paste production system includes a liquid raw material storage tank 100, a solid raw material dispenser 200, a glue-making machine 300, a dispersant storage tank 400, a coarse grinding device 500, a fine grinding device 600, and a storage tank 700.

[0048] The liquid raw material storage tank 100 is connected to a vacuum pipeline network, a nitrogen balance pipeline network, and a nitrogen source pipeline network.

[0049] The solid raw material dispenser 200 is equipped with an electronic scale 210, which is used to measure the initial total amount of solid raw materials and the remaining mass of solid raw materials after dispensing.

[0050] The glue-making machine 300 is connected to the liquid raw material storage tank 100, and the glue-making machine 300 is connected to the solid raw material dispenser 200. The glue-making machine 300 is connected to the vacuum pipeline network, the nitrogen balance pipeline network, and the nitrogen source pipeline network.

[0051] The dispersant storage tank 400 is connected to the glue-making machine 300, and the dispersant storage tank 400 is connected to the vacuum pipeline network, the nitrogen balance pipeline network and the nitrogen source pipeline network.

[0052] The coarse grinding device 500 includes a coarse grinding mill 510 and a coarse grinding tank 520. The inlet of the coarse grinding mill 510 is connected to the outlet of the glue-making machine 300, the outlet of the coarse grinding mill 510 is connected to the inlet of the coarse grinding tank 520, the outlet of the coarse grinding mill 510 is connected to the inlet of the glue-making machine 300, and the outlet of the coarse grinding tank 520 is connected to the inlet of the glue-making machine 300. The coarse grinding tank 520 is connected to a vacuum pipeline, a nitrogen balance pipeline, and a nitrogen source pipeline.

[0053] The inlet of the fine grinder 600 is connected to the outlet of the coarse grinding jar 520, and the fine grinder 600 is connected to the vacuum pipeline, the nitrogen balance pipeline and the nitrogen source pipeline.

[0054] The storage tank 700 is connected to the outlet of the fine grinder 600, and the storage tank 700 is connected to the vacuum pipeline, the nitrogen balance pipeline and the nitrogen source pipeline.

[0055] Specifically, the liquid raw material uses NMP (N-methylpyrrolidone) and a co-solvent. Solid raw materials include one or more of graphite and carbon nanotubes. The liquid and solid raw materials are fed into the glue-forming machine 300, and the mass ratio of liquid to solid raw materials is determined based on the weighing results during the feeding process. Since higher grinding speeds result in higher grinding efficiency, increased temperature can negatively impact particle size, which is detrimental to obtaining better particle quality. High temperatures cause particle aggregation. Therefore, the liquid and solid raw materials need to be stirred in the glue-forming machine 300, and the mixture is then dispersed using a dispersion disc within the machine. The initially dispersed raw materials can then be coarsely ground using a coarse grinding mill 510. The grinding media in the coarse grinding mill 510 is zirconia beads, which have a high specific gravity, high strength, high energy, and high grinding efficiency. The rotor speed of the sand mill can be selected from 300 rpm / min to 500 rpm / min. Generally, the grinding time is inversely proportional to the rotor speed. When the coarseness of the product from coarse grinding is lower than the coarseness threshold of fine grinding, the coarse grinding product is introduced into the fine grinding jar for fine grinding to produce the target product. This ensures both grinding fineness and grinding efficiency.

[0056] More specifically, Figures 1 to 10 The nitrogen markings refer to the nitrogen source network, compressed air refers to the diaphragm pump gas supply network, nitrogen balance pipe refers to the nitrogen balance network, and vacuum refers to the vacuum network.

[0057] This embodiment relates to a conductive paste production system. By setting the amount of liquid raw material, a fixed quantity of liquid raw material is fed into a paste mixer 300. Solid raw materials, including graphite and carbon black, are added, along with a dispersant. The weight is set, and the paste mixer 300 automatically draws in the dispersant. The dispersant intake error is within 0.3%. Simultaneously, a mixer within the paste mixer 300 operates a coarse grinding device 500 for coarse grinding, and a fine grinding device 600 for fine grinding. Based on real-time paste monitoring data, if the results exceed expectations, the system automatically adjusts the formulation strategy to avoid risks such as paste quality degradation or even spoilage. Specifically, as higher grinding speeds result in higher grinding efficiency, increased temperature can negatively impact particle size, which is detrimental to obtaining better particle quality. High temperatures cause particle molecular aggregation. Therefore, the paste mixer 300 needs to stir both liquid and solid raw materials, and then use a dispersion disc within the paste mixer 300 to disperse the mixed clumps of liquid and solid raw materials. The initially dispersed raw material can be coarsely ground using a coarse grinding machine 510. The coarse grinding mill 510 uses zirconia beads as its grinding media. Zirconia beads have a high specific gravity, high strength, high energy, and high grinding efficiency. The rotor speed of the sand mill can be selected from 300 rpm / min to 500 rpm / min. Generally, the grinding time is inversely proportional to the rotor speed. When the coarse grinding product has a fineness lower than the fineness threshold of the fine grinding, the coarse grinding product is introduced into the fine grinding jar for fine grinding to produce the target product. This ensures both grinding fineness and grinding efficiency.

[0058] like Figures 1 to 9 As shown, in one embodiment of this application, the liquid raw material storage tank 100 is connected to the cleaning pipeline 110, and the liquid raw material storage tank 100 provides a cleaning medium to the cleaning pipeline 110. The glue-making machine 300 is connected to the cleaning pipeline 110. The cleaning pipeline 110, which is connected to the glue-making machine 300, also provides liquid raw materials to the glue-making machine 300. The coarse grinding tank 520 is connected to the cleaning pipeline 110. The fine grinding mill 600 is connected to the cleaning pipeline 110. The storage tank 700 is connected to the cleaning pipeline 110.

[0059] Specifically, in actual production, there are three situations that require cleaning of pipeline 110. The first is when the conductive slurry production equipment needs to be shut down for an extended period. In this case, the entire pipeline network is essentially empty.

[0060] The liquid cleaning process, from the glue-making machine 300, coarse grinding tank 520, fine grinding tank 600, semi-finished product tank 710, to the waste liquid ton container, is as follows: The inlet valve of the glue-making machine 300 is opened, and the cleaning solvent (NMP) is added first. The cleaning valve on the glue-making machine 300 is opened, and then the solvent is sequentially pumped through the diaphragm pump to each of the subsequent storage tanks 720 for pipeline cleaning. The glue-making machine 300's outlet valve is opened, and the cleaning solvent is pumped into the coarse grinding mill 510 by the outlet diaphragm pump. The outlet valve of the coarse grinding mill 510 is opened, and the cleaning solvent flows from the coarse grinding mill 600 into the coarse grinding mill 710. The discharge screw pump 220 of the mill 510 pumps the cleaning solvent into the coarse grinding tank 520. The industrial control equipment controls the coarse grinding tank 520 to open the discharge valve, and the discharge diaphragm pump of the coarse grinding tank 520 pumps the cleaning solvent into the fine grinding tank. The industrial control equipment controls the fine grinding tank to open the discharge valve of the fine grinder 600, and the discharge diaphragm pump of the fine grinder 600 pumps the cleaning solvent into the semi-finished product tank 710. The industrial control equipment controls the semi-finished product tank 710 to open the discharge valve, and the discharge screw pump 220 of the semi-finished product tank 710 pumps the cleaning solvent (which has now become waste liquid) into the waste liquid pipeline. The waste liquid ton is opened, and the waste liquid flows into the waste liquid ton from the waste liquid pipeline.

[0061] The fine grinding jar 600 may include a first fine grinding jar 611 and a second fine grinding jar 612.

[0062] Secondly, when it is necessary to change the batch size of the conductive paste. At this time, the entire pipeline network is basically filled with raw materials, semi-finished products, and finished products. It is then necessary to drain the raw materials, semi-finished products, and finished products from the pipeline to achieve a basically empty pipeline network.

[0063] While one semi-finished product tank 710 is being cleaned or maintained, another semi-finished product tank 710 can continue production, thereby reducing downtime and improving production efficiency. The system consists of a glue-making machine 300, a coarse grinding tank 520, a fine grinding mill 600, a semi-finished product tank 710, and finally a production storage tank 720. Pressure sensors are installed at key locations in the slurry pipeline (near the bend and in the middle of the pipeline between the discharge valve of each storage tank 720 and the inlet valve of the next storage tank 720). During normal operation, pressure changes in the pipeline (pressure sensors are located in the slurry discharge pipeline) are continuously monitored. If a significant drop in pressure or large fluctuations are detected (fluctuations within approximately 35%), it can be determined that there may be a blockage or slurry accumulation in the pipeline, requiring cleaning. When no blockage occurs, this entire pipeline primarily relies on this channel for the transport of raw materials, semi-finished products, and finished products.

[0064] The industrial control equipment controls the opening of the inlet valve of the glue-making machine 300, and controls the opening of the discharge valve of the glue-making machine 300 to discharge the material. The discharge diaphragm pump of the glue-making machine 300 pumps the semi-finished product into the coarse grinding mill 510. The discharge valve of the coarse grinding mill 510 is opened, and the semi-finished product is coarsely ground and discharged by the coarse grinding mill 510. The screw pump 220 pumps the semi-finished product into the coarse grinding tank 520. The industrial control equipment controls the opening of the discharge valve of the coarse grinding tank 520, and the discharge diaphragm pump of the coarse grinding tank 520 pumps the coarsely ground semi-finished product into the fine grinding mill 600 for fine grinding. The industrial control equipment controls the opening of the discharge valve of the fine grinding mill 600, and the discharge diaphragm pump of the fine grinding mill 600 pumps the finely ground semi-finished product into the semi-finished product tank 710. The industrial control equipment controls the opening of the discharge valve of the semi-finished product tank 710, and the discharge screw pump 220 of the semi-finished product tank 710 pumps the finished product into the storage tank 720.

[0065] The following steps are then followed: The liquid cleaning process from the glue-making machine 300, coarse grinding tank 520, fine grinding mill 600, semi-finished product tank 710, to the waste liquid ton: The inlet valve of the glue-making machine 300 is opened by the industrial control equipment, and the cleaning solvent (NMP) is added first to the glue-making machine 300. The cleaning valve on the storage tank 720 of the glue-making machine 300 is opened, and then the cleaning is sequentially applied to each subsequent storage tank 720 via a diaphragm pump. The glue-making machine 300's outlet valve is opened, and the cleaning solvent is pumped into the coarse grinding mill 510 by the outlet diaphragm pump of the glue-making machine 300. The outlet valve of the coarse grinding mill 510... The cleaning solvent is pumped into the coarse grinding tank 520 by the discharge screw pump 220 of the coarse grinding mill 510. The industrial control equipment controls the coarse grinding tank 520 to open its discharge valve, and the cleaning solvent is pumped into the fine grinding tank by the discharge diaphragm pump of the coarse grinding tank 520. The industrial control equipment controls the fine grinding tank to open its discharge valve, and the cleaning solvent is pumped into the semi-finished product tank 710 by the discharge diaphragm pump of the fine grinding mill 600. The industrial control equipment controls the semi-finished product tank 710 to open its discharge valve, and the cleaning solvent (now turned into waste liquid) is pumped into the waste liquid pipeline by the discharge screw pump 220 of the semi-finished product tank 710. The waste liquid ton is opened, and the waste liquid flows into the waste liquid ton from the waste liquid pipeline.

[0066] Thirdly, blockages may occur in the pipelines during production. This is because the pipeline layout is complex, inevitably involving numerous bends and significant angle changes. These factors can impede the flow of the slurry within the pipeline, leading to accumulation. Furthermore, the slurry contains a large number of fine particles or impurities, which can easily deposit and accumulate within the pipeline.

[0067] This embodiment relates to a pipeline cleaning method. This method offers advantages such as automation, high efficiency, and environmental friendliness. After the cleaning solvent enters the waste liquid pipeline, an automated operation procedure is developed based on actual needs, enabling the automated operation of the ball pushing and collecting device within the waste liquid pipeline. For example, when the pipeline requires cleaning, the control system automatically activates the ball pushing device to push the cleaning balls into the pipeline, and simultaneously activates the ball collecting device to retrieve the cleaned balls, completing the cleaning operation. This method is suitable for cleaning various pipelines, such as slurry pipelines, cooling water pipelines, refrigeration pipelines, and steam pipelines.

[0068] like Figures 1 to 9 As shown, in one embodiment of this application, the storage tank 700 includes multiple semi-finished product tanks 710 and multiple storage tanks 720. All of the multiple semi-finished product tanks 710 are connected to the fine grinder 600. The multiple semi-finished product tanks 710 are connected to the storage tanks 720 via a material pipeline network 730. The fine grinder 600 is connected to the material pipeline network 730. A cleaning device 800 is connected to the inlet of the material pipeline network 730.

[0069] Specifically, the design of two semi-finished product tanks 710 can also improve cleaning efficiency. For example, while one semi-finished product tank 710 is being cleaned or maintained, the other semi-finished product tank 710 can continue production, thereby reducing downtime and improving production efficiency.

[0070] The industrial control equipment controls the fine grinder 600 to open the discharge valve, and the discharge diaphragm pump of the fine grinder 600 pumps the cleaning solvent into the semi-finished product tank 710. The industrial control equipment controls the semi-finished product tank 710 to open the discharge valve, and the discharge screw pump 220 of the semi-finished product tank 710 pumps the cleaning solvent (which has now become waste liquid) into the waste liquid pipeline. The waste liquid ton is opened, and the waste liquid flows into the waste liquid ton from the waste liquid pipeline.

[0071] This embodiment relates to a method for cleaning the inner cavity of a semi-finished product tank 710. Made of carbon nanomaterials, it can quickly clean dirt and impurities inside the pipeline. Simultaneously, the internal tank wall is cleaned using the production process of the semi-finished product tank 710 itself. This technical solution is applicable to the cleaning of various pipelines, such as slurry pipelines, cooling water pipelines, refrigeration pipelines, and steam pipelines. This technical solution is simple to operate, easy to implement, and easy to maintain.

[0072] like Figures 1 to 9As shown, in one embodiment of this application, the conductive paste production system further includes a first magnetic pump 120, a first filter 130, and a second filter 140. The first magnetic pump 120 is disposed in the pipeline between the liquid raw material storage tank 100 and the cleaning pipeline 110. The inlet diameter of the first magnetic pump 120 is greater than or equal to 2S. The outlet of the first magnetic pump 120 is connected to the inlet of the first filter 130. The diameter of the pipeline between the outlet of the first magnetic pump 120 and the first filter 130 is greater than or equal to 1.5S. The outlet of the first magnetic pump 120 is connected to the inlet of the second filter 140. The diameter of the pipeline between the outlet of the first magnetic pump 120 and the second filter 140 is greater than or equal to 1.5S. The outlets of both the first filter 130 and the second filter 140 are connected to the cleaning pipeline 110. The outlets of both the first filter 130 and the second filter 140 are connected to the return port of the liquid raw material storage tank 100.

[0073] Specifically, by feeding liquid and solid raw materials into the glue-making machine 300, the mass ratio of liquid to solid raw materials is determined based on the weighing results during the process of feeding liquid and solid raw materials.

[0074] As the grinding speed increases, the grinding efficiency will be higher. However, the temperature rise will have a certain impact on the particles, which is not conducive to obtaining better particles. High temperature causes particle molecules to aggregate. Therefore, in the glue making machine 300, it is necessary to stir the liquid and solid raw materials, and then use the dispersion plate in the glue making machine 300 to disperse the mixed clumps of liquid and solid raw materials.

[0075] The initially dispersed raw materials can be coarsely ground using a coarse grinding mill 510. The grinding media for the coarse grinding mill 510 is zirconia beads, which have a high specific gravity, high strength, high energy, and high grinding efficiency. The rotor speed of the sand mill can be selected from 300 rpm / min to 500 rpm / min. Generally, the grinding time is inversely proportional to the rotor speed.

[0076] The function of the sixth filter 533 is to remove the slag flowing into the coarse grinding tank 520.

[0077] The seventh filter 534 has 100 pores per square meter, which breaks down large clumps of mixed material into smaller particles for filtration.

[0078] This embodiment relates to a grinding method. When the coarseness of the coarsely ground product is lower than the coarseness threshold of the finely ground product, the coarsely ground product is introduced into the fine grinder 600 and finely ground to produce the target product. This ensures both grinding precision and grinding efficiency.

[0079] like Figures 1 to 9As shown, in one embodiment of this application, the conductive paste manufacturing system further includes a vacuum storage tank 150 and a third filter 160. An external vacuum source is connected to the outlet of the third filter 160. The inlet of the third filter 160 is connected to the outlet of the vacuum storage tank 150. The inlet of the vacuum storage tank 150 is connected to a vacuum pipeline network.

[0080] Specifically, when the slurry formulation mixing is completed, the vacuuming action is selected depending on whether the formulation is selected. If not, the formulation is ended directly; otherwise, the slurry vacuuming is triggered. This process will perform different actions depending on the vacuum level inside the tank. When the vacuum level is higher than -80 kPa, the vacuuming action is initiated, and the vacuum pipeline valve automatically opens to remove air bubbles from the tank, improving the yield of the finished product. When the vacuum level has reached the set vacuum level and stabilized, the formulation is also ended; otherwise, the vacuuming task continues.

[0081] After this, nitrogen gas is introduced. In the glue-making machine 300, the bubbles are pushed out of the colloid by the pressure of the nitrogen gas, thereby realizing the removal of bubbles from the colloid semi-finished product.

[0082] In fact, this degassing process also applies after coarse and fine grinding. However, to improve grinding efficiency, the degassing process should also be performed in the glue-making tank. It is worth mentioning that in rapid glue-making processes, the degassing process can also be performed only after fine grinding and before the finished product is produced.

[0083] This embodiment involves the process of removing air bubbles. Introducing nitrogen helps remove air bubbles from the semi-finished product, ensuring the quality of the final product.

[0084] like Figures 1 to 9 As shown, in one embodiment of this application, the conductive paste production system further includes a screw pump 220, a fourth filter 230, a fifth filter 240, and a back pressure device 250. The screw pump 220 is disposed in the pipeline between the dispersant storage tank 400 and the glue-making machine 300. The inlet diameter of the screw pump 220 is greater than or equal to 1.5S and less than or equal to 2S. The outlet of the screw pump 220 is connected to the inlet of the fourth filter 230. The diameter of the pipeline between the outlet of the screw pump 220 and the fourth filter 230 is greater than or equal to 1.5S. The outlet of the screw pump 220 is connected to the inlet of the fifth filter 240. The diameter of the pipeline between the outlet of the screw pump 220 and the fifth filter 240 is greater than or equal to 1.5S. The outlets of both the fourth filter 230 and the fifth filter 240 are connected to the return port of the dispersant storage tank 400. The outlets of the fourth filter 230 and the fifth filter 240 are both connected to the inlet of the back pressure unit 250. The outlet of the back pressure unit 250 is connected to the glue-making machine 300.

[0085] Specifically, by receiving the mass ratio of solid and liquid raw materials, data such as the weight ratio of liquid to solid raw materials (10:1), stirring time (120-150 min), stirring speed (10-35 rpm), dispersion time (120-150 min), dispersion speed (1000-2000 rpm), slurry temperature (25-35℃), and vacuum degree (-80--90 kPa) are set.

[0086] More specifically, a high-precision mass flow meter is installed on the liquid raw material storage tank 100 to detect the weight of the liquid raw material in the tank in real time. When the glue-making machine 300 requests liquid raw material filling from the liquid raw material storage tank 100 during formula operation, the valves and magnetic pumps of the outlet pipeline system of the liquid raw material storage tank 100 will automatically open. The liquid raw material in the liquid raw material storage tank 100 is pumped into the glue-making machine 300 through a weight reduction metering method. When the remaining liquid weight is less than 5kg, the motor is slowed down in advance. At low speed, the motor frequency is generally controlled at 35Hz to achieve early deceleration of the metering process, effectively reducing the impact of residual liquid on metering accuracy during motor deceleration. Generally, we need to control the accuracy error within ±0.2%. After the metering is completed, the final metering data is fed back in a closed loop to adjust the strategy in time and effectively control the liquid addition accuracy.

[0087] It is worth mentioning that, in order to ensure that the air in the pipeline does not affect the mass measurement of the liquid raw material, the back pressure valve value of the liquid raw material inlet port of the glue-making machine 300 needs to be received during the initial filling of the liquid raw material to ensure that the liquid raw material fills the pipeline between the first magnetic pump 120 and the glue-making machine 300.

[0088] This embodiment relates to a conductive paste production system. Based on real-time paste monitoring data, when unexpected results occur, the system automatically adjusts the formulation strategy to avoid risks such as paste quality degradation or even scrap. The mass of the added solid raw materials is determined based on the initial solid raw material mass measured by the electronic scale 210 and the remaining solid raw material mass after addition. The mass of the added liquid raw materials is determined based on the mass distribution relationship between solid and liquid raw materials and the added solid raw material mass. The mass of the liquid raw materials introduced into the glue-making machine 300 is statistically analyzed using a mass flow meter to ensure that the liquid raw material mass meets preset requirements. In the solid raw material system, a high-precision electronic scale 210 is installed in the solid raw material silo. During glue-making process, a solid raw material request is sent to the solid raw material system. The solid raw material silo adds powder to the glue-making machine 300 through a metering and weight reduction method. Valves and screw motors in the pipeline operate automatically. This application achieves high precision in raw material addition.

[0089] like Figures 1 to 9As shown, in one embodiment of this application, the conductive paste production system further includes a first diaphragm pump 531, a second diaphragm pump 532, a sixth filter 533, a seventh filter 534, a first coarse grinder 535, and a second coarse grinder 536. The first diaphragm pump 531, the second diaphragm pump 532, the sixth filter 533, and the seventh filter 534 are connected to a gas supply network. The power source for the diaphragm pumps is a high-pressure gas source. The first diaphragm pump 531, the first coarse grinder 535, and the sixth filter 533 are sequentially connected to form a first branch. The second diaphragm pump 532, the second coarse grinder 536, and the seventh filter 534 are sequentially connected to form a second branch. The first branch and the second branch have the same structure. The inlet of the first branch and the inlet of the second branch are both connected to the outlet of the glue-making machine 300. The outlet of the first branch and the outlet of the second branch are both connected to the inlet of the coarse grinding tank 520. The outlets of the first branch and the second branch are both connected to the inlet of the glue-making machine 300. The outlet of the coarse grinding tank 520 is connected to the return port of the glue-making machine 300.

[0090] Specifically, by feeding liquid and solid raw materials into the glue-making machine 300, the mass ratio of liquid to solid raw materials is determined based on the weighing results during the process of feeding liquid and solid raw materials.

[0091] As the rotation speed of the coarse mill 510 increases, the grinding efficiency will be higher. However, the increased temperature will have a certain impact on the particles, which is not conducive to obtaining better particles. High temperature causes particle molecules to aggregate. Therefore, in the glue-making machine 300, it is necessary to stir the liquid and solid raw materials, and then use the dispersion disc in the glue-making machine 300 to disperse the mixed clumps of liquid and solid raw materials.

[0092] The initially dispersed raw materials can be coarsely ground using a coarse grinding mill 510. The grinding media for the coarse grinding mill 510 is zirconia beads, which have a high specific gravity, high strength, high energy, and high grinding efficiency. The rotor speed of the sand mill can be selected from 300 rpm / min to 500 rpm / min. Generally, the grinding time is inversely proportional to the rotor speed.

[0093] This embodiment relates to a grinding system for a conductive paste production system. When the coarseness of the coarsely ground product is lower than the coarseness threshold of the finely ground product, the coarsely ground product is introduced into a fine grinding jar and finely ground to produce the target product. This ensures both grinding precision and grinding efficiency.

[0094] It is worth mentioning that a cooling water loop is also set up in the entire loop.

[0095] Cooling water temperature: The upper limit of the cooling water temperature can be set to 40-50℃. The cooling water temperature directly affects the working temperature in the grinding chamber, thus affecting the grinding efficiency.

[0096] like Figures 1 to 9 As shown, in one embodiment of this application, the fine grinder 600 includes a first fine grinding jar 611, a second fine grinding jar 612, a third diaphragm pump 613, and a fourth diaphragm pump 614. Both the first fine grinding jar 611 and the second fine grinding jar 612 are ultrasonic fine grinding devices. The return port of the first fine grinding jar 611 is connected to the return port of the second fine grinding jar 612. The discharge port of the first fine grinding jar 611 is connected to the discharge port of the second fine grinding jar 612. The inlet of the third diaphragm pump 613 and the inlet of the fourth diaphragm pump 614 are both connected to the return port of the first fine grinding jar 611. The discharge ports of the third diaphragm pump 613 and the fourth diaphragm pump 614 are both connected to the storage tank 700.

[0097] Specifically, during ultrasonic processing, the entire amplitude transformer and tool do not vibrate at high frequencies up and down; this is completely different from the concept of low-frequency or power-frequency vibration. Ultrasonic waves propagate primarily as longitudinal waves within the metal rod, causing individual points within the rod to reciprocate in place along the direction of wave propagation in a sinusoidal manner. These vibrations are then transmitted at the speed of sound to the tool end face, causing the tool end face to vibrate ultrasonically.

[0098] The calculation formulas for the relevant parameters of the tool end face are as follows: Instantaneous displacement calculation formula: S = Asinωt; Maximum displacement calculation formula: Smax = A

[0099] The formula for calculating instantaneous velocity is: V = ωAcosωt

[0100] The formula for calculating maximum speed is: Vmax = ωA

[0101] The formula for instantaneous acceleration is: a = ω²Asinωt

[0102] The formula for calculating maximum acceleration is: a_max = ω^2A

[0103] In the above calculation formula: A is the amplitude of ultrasound, ω is the angular frequency of ultrasound, ω is 2πf, f is the frequency, and t is the time.

[0104] Given an ultrasonic amplitude A = 0.002 mm and a frequency f = 20000 Hz, the maximum velocity and maximum acceleration of the tool end face can be calculated.

[0105] The formula for calculating the maximum speed at the tool end face is: Vmax = ωA = 2πfA = 251.3 mm / s

[0106] The formula for calculating the maximum acceleration of the tool end face is: a_max = ω²A = 31582880 mm / s² = 3233 g. Therefore, the maximum acceleration of the tool end face in the ultrasonic fine grinding device is more than 3000 times the gravitational acceleration g (g ≈ 9.81 m / s²). When the amplitude A = 0.05 m, the maximum velocity and maximum acceleration of the tool end face will increase to 25 times the above values. It can be understood that the maximum acceleration value at this time will be more than 80,000 times the gravitational acceleration g. Considering the strength of the tool end face material, the amplitude A = 0.05 m is the maximum threshold. Therefore, when resonance occurs, the fineness threshold of the product is 0.05 m.

[0107] More specifically, based on the structural strength of the tool end face, we know that a max = 8000g, and thus obtain the relationship between ω and A. Based on the resonant frequency of the material to be ground, we can know the threshold of A. The threshold of amplitude A is the fineness threshold of the material to be ground.

[0108] This embodiment relates to ultrasonic grinding technology using a fine grinding jar. High grinding precision: Ultrasonic grinding equipment can precisely control the grinding effect. Users can adjust grinding parameters through the control system to obtain the desired grinding effect, thereby improving the grinding efficiency. The fine grinding jar allows for continuous material processing and discharge, greatly improving production efficiency.

[0109] like Figures 1 to 9 As shown, in one embodiment of this application, the fine grinder 600 includes a first fine grinder 615 and a second fine grinder 616. The third diaphragm pump 613 and the first fine grinder 615 are sequentially connected to form a third branch. The fourth diaphragm pump 614 and the second fine grinder 616 are sequentially connected to form a fourth branch. The third and fourth branches have the same structure. The first fine grinding tank 611 and the second fine grinding tank 612 are storage tanks 720. The inlet of the third branch is the inlet of the third diaphragm pump 613. The inlet of the fourth branch is the inlet of the fourth diaphragm pump 614. The outlets of both the third and fourth branches are connected to the outlet of the first fine grinding tank 611. The outlets of both the third and fourth branches are connected to the outlet of the second fine grinding tank 612.

[0110] Specifically, power on the ultrasonic fine grinding device is turned on, amplitude is set to 0.05mm, frequency to 20000Hz, the commonly used material-to-liquid ratio is 0.6, and the running time is set to 30 minutes. Material is discharged from the coarse grinding jar 520 into the ultrasonic grinding equipment for fine grinding. The condition of the material is checked. If the desired processing effect is achieved, the equipment is stopped and the main power is turned off. If the desired processing effect is not achieved, the fine grinding jar is returned to the glue-making machine 300 to restart the coarse grinding jar 520 for another round of fine grinding.

[0111] This embodiment relates to a system that, when the coarseness of the coarsely ground product is lower than the coarseness threshold of the finely ground product, introduces the coarsely ground product into a fine grinding jar and performs fine grinding to produce the target product. This system can ensure both grinding precision and grinding efficiency.

[0112] The key point of this embodiment lies in utilizing the advantages of both the ultrasonic fine grinding device and the coarse grinding mill, combining them in a grinding and dispersing system for dispersed mixed agglomerates. This ensures both grinding fineness and grinding efficiency. Figure 10 As shown, in one embodiment of this application, a control method for a conductive paste fabrication system is provided, comprising:

[0113] S100, add the solvent into the glue-making machine.

[0114] S200, a solid material is fed into a glue-forming machine. The solid material includes one or more of graphite, carbon nanotubes, and a co-solvent.

[0115] S300, in a glue-making machine, stirs solvent and solids to form a mixed mass.

[0116] The S400 uses a dispersion disc in a glue-making machine to disperse a mixture of solvent and solids.

[0117] S500: The dispersed mixed agglomerates are fed into a coarse grinding mill, which coarsely grinds the dispersed mixed agglomerates and then feeds the coarsely ground product into a coarse grinding tank.

[0118] S600 performs a coarse grinding product fineness test. After the coarse grinding product fineness test is qualified, the coarse grinding product in the coarse grinding tank is introduced into the ultrasonic fine grinding device.

[0119] The S700 uses an ultrasonic fine grinding device to finely grind the coarsely ground product.

[0120] The S800 outputs the finely ground product as the target product.

[0121] Specifically, liquid and solid raw materials are fed into the glue-making machine. During the feeding process, the mass ratio of liquid to solid raw materials is determined based on the weighing results. Since higher rotation speeds in the coarse grinding mill increase grinding efficiency, increased temperature can negatively impact particle size, hindering the acquisition of better particle quality. High temperatures cause particle aggregation. Therefore, the liquid and solid raw materials need to be stirred in the glue-making machine, and the mixture is then dispersed using a dispersing disc. The initially dispersed materials can then be coarsely ground using a sand mill. Zirconia beads are chosen as the grinding media in the coarse sand mill due to their high density, strength, energy, and grinding efficiency. The rotor speed of the sand mill can be selected from 300 rpm to 500 rpm. Generally, grinding time is inversely proportional to the rotor speed.

[0122] This embodiment relates to a control method for a conductive paste preparation system. By setting the solvent quantity, a fixed amount of solvent is dispensed into the paste preparation tank. Graphite and carbon nanotubes are added, along with a dispersant. The weight is set, and the paste preparation machine automatically draws in the dispersant. The dispersant intake error is within 0.3%. The mixer inside the paste preparation machine simultaneously operates a coarse grinding mill and a fine grinding mill for fine grinding. Based on real-time paste monitoring data, if the results exceed expectations, the formula strategy is automatically adjusted to avoid risks such as paste quality degradation or even scrapping. Specifically, as higher mill speeds result in higher grinding efficiency, increased temperature can negatively impact particle size, which is detrimental to obtaining better particle quality. High temperatures cause particle molecular aggregation. Therefore, in the paste preparation machine, it is necessary to stir the solvent and solids, and then use a dispersion disc within the paste preparation machine to disperse the mixture of solvent and solids. The initially dispersed raw materials can be coarsely ground using a sand mill. Zirconia beads are selected as the grinding media in the coarse grinding sand mill because they have a high specific gravity, high strength, high energy, and high grinding efficiency. The rotor speed of the coarse grinding mill can be selected from 300 rpm / min to 500 rpm / min. Generally, the grinding time is inversely proportional to the rotor speed. When the coarseness of the coarse grinding product is lower than the coarseness threshold of the fine grinding, the coarse grinding product is introduced into the fine grinding jar for fine grinding to produce the target product. This ensures both grinding fineness and grinding efficiency.

[0123] The adhesive preparation method described in this application has high production efficiency and a high yield. The technical features of the above embodiments can be combined arbitrarily, and the execution order of the method steps is not limited. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; however, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this patent application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A conductive paste manufacturing system, characterized in that, include: Liquid raw material storage tank, connected to vacuum pipeline network, nitrogen balance pipeline network and nitrogen source pipeline network; A solid raw material dispenser is equipped with an electronic scale, which is used to measure the initial total amount of solid raw materials and the remaining mass of solid raw materials after dispensing them. The glue-making machine is connected to the liquid raw material storage tank and the solid raw material dispenser. The glue-making machine is also connected to the vacuum pipeline network, the nitrogen balance pipeline network, and the nitrogen source pipeline network. The dispersant storage tank is connected to the glue-making machine and is connected to a vacuum pipeline network, a nitrogen balance pipeline network, and a nitrogen source pipeline network. A coarse grinding device includes a coarse grinding mill and a coarse grinding tank. The inlet of the coarse grinding mill is connected to the outlet of the glue-making machine, the outlet of the coarse grinding mill is connected to the inlet of the coarse grinding tank, the outlet of the coarse grinding mill is connected to the inlet of the glue-making machine, and the outlet of the coarse grinding tank is connected to the inlet of the glue-making machine. The coarse grinding tank is connected to a vacuum pipeline network, a nitrogen balance pipeline network, and a nitrogen source pipeline network. A fine grinder, the inlet of which is connected to the outlet of the coarse grinding tank, and the fine grinder is connected to a vacuum pipeline, a nitrogen balance pipeline, and a nitrogen source pipeline; A storage tank is connected to the outlet of the fine grinder, and the storage tank is connected to a vacuum pipeline, a nitrogen balance pipeline, and a nitrogen source pipeline. The fine grinder includes a first fine grinding jar, a second fine grinding jar, a third diaphragm pump, and a fourth diaphragm pump; Both the first and second fine grinding jars are ultrasonic grinding devices; The return port of the first fine grinding jar is connected to the return port of the second fine grinding jar; The discharge port of the first fine grinding jar and the discharge port of the second fine grinding jar are connected; The feed inlet of the third diaphragm pump and the feed inlet of the fourth diaphragm pump are both connected to the return port of the first fine grinding tank. The discharge ports of the third diaphragm pump and the fourth diaphragm pump are both connected to the storage tank. The liquid raw material uses N-methylpyrrolidone and a co-solvent, and the solid raw material includes one or more of graphite and carbon nanotubes. The liquid and solid raw materials are fed into the glue-making machine, and the mass ratio of the liquid and solid raw materials is determined based on the weighing results during the process of feeding the liquid and solid raw materials. In the glue-making machine, liquid and solid raw materials need to be stirred. Then, the dispersion disc in the glue-making machine is used to disperse the mixture of liquid and solid raw materials. The initially dispersed raw materials are then coarsely ground using a coarse grinding mill. Zirconia beads are selected as the grinding media in the coarse grinding mill. When the coarse grinding product has a fineness lower than the fineness threshold of the fine grinding, the coarse grinding product is introduced into a fine grinding tank for fine grinding to produce the target product. After the cleaning solvent enters the waste liquid pipeline, an automated operation process is written according to actual needs to realize the automated operation of the ball pushing and collecting device in the waste liquid pipeline. When the pipeline needs to be cleaned, the control system automatically starts the ball pushing device to push the cleaning ball into the pipeline, and at the same time starts the ball collecting device to collect the cleaned ball, thus completing the cleaning operation. A high-precision mass flow meter is installed on the liquid raw material storage tank to detect the weight of the liquid raw material in the tank in real time. When the glue making machine requests liquid raw material filling from the liquid raw material storage tank during formula operation, the valves and magnetic pumps of the outlet pipeline system of the liquid raw material storage tank will be automatically opened. The liquid raw material storage tank will pump the preset liquid raw material into the glue making machine through weight reduction metering. When the remaining liquid weight is less than 5kg, the motor will be slowed down in advance to realize the early deceleration of the metering process. After the metering is completed, the final metering data will be fed back in a closed loop to adjust the strategy in time.

2. The conductive paste fabrication system according to claim 1, characterized in that, The liquid raw material storage tank is connected to the cleaning pipeline, and the liquid raw material storage tank provides the cleaning medium to the cleaning pipeline; The glue-making machine is connected to the cleaning pipeline; the cleaning pipeline connected to the glue-making machine also provides liquid raw materials to the glue-making machine; The coarse grinding tank is connected to the cleaning pipeline; The fine grinder is connected to the cleaning pipeline; The storage tank is connected to the cleaning pipeline.

3. The conductive paste fabrication system according to claim 2, characterized in that, The storage tank includes a material pipeline network, multiple semi-finished product tanks, and multiple storage tanks; All of the aforementioned semi-finished product tanks are connected to the fine grinder; Multiple semi-finished product tanks are connected to the storage tanks via a material pipeline network; The fine grinder is connected to the material pipeline network; The inlet of the material pipeline is connected to a cleaning device.

4. The conductive paste preparation system according to claim 3, characterized in that, The conductive paste production system also includes a first magnetic pump, a first filter, and a second filter; The first magnetic pump is installed in the pipeline between the liquid raw material storage tank and the cleaning pipeline; The inlet pipe diameter of the first magnetic pump is greater than or equal to 2S; The outlet of the first magnetic pump is connected to the inlet of the first filter; The diameter of the pipe between the outlet of the first magnetic pump and the first filter is greater than or equal to 1.5S; The outlet of the first magnetic pump is connected to the inlet of the second filter; The diameter of the pipe between the outlet of the first magnetic pump and the second filter is greater than or equal to 1.5S; The outlets of the first filter and the second filter are both connected to the cleaning pipeline; The outlets of the first filter and the second filter are both connected to the return port of the liquid raw material storage tank.

5. The conductive paste preparation system according to claim 4, characterized in that, The conductive paste production system also includes a vacuum storage tank and a third filter; The external vacuum source is connected to the air outlet of the third filter; The inlet of the third filter is connected to the outlet of the vacuum tank; The vacuum storage tank is connected to a vacuum pipeline network at its inlet.

6. The conductive paste preparation system according to claim 5, characterized in that, The conductive paste production system also includes a screw pump, a fourth filter, a fifth filter, and a back pressure unit; The screw pump is installed in the pipeline between the dispersant storage tank and the glue-making machine; The inlet pipe diameter of the screw pump is greater than or equal to 1.5S and less than or equal to 2S; The outlet of the screw pump is connected to the inlet of the fourth filter; The diameter of the pipe between the outlet of the screw pump and the fourth filter is greater than or equal to 1.5S; The outlet of the screw pump is connected to the inlet of the fifth filter; The diameter of the pipe between the outlet of the screw pump and the fifth filter is greater than or equal to 1.5S; The outlets of the fourth filter and the fifth filter are both connected to the return port of the dispersant storage tank. The outlets of the fourth filter and the fifth filter are both connected to the inlet of the back pressure unit; The outlet of the back pressure device is connected to the glue-making machine.

7. The conductive paste fabrication system according to claim 6, characterized in that, The conductive paste production system also includes a first diaphragm pump, a second diaphragm pump, a sixth filter, a seventh filter, a first coarse grinding mill, and a second coarse grinding mill; The first diaphragm pump, the second diaphragm pump, the sixth filter, and the seventh filter are connected above the gas source pipeline; the power source for the diaphragm pump is a high-pressure gas source. The first diaphragm pump, the first coarse mill, and the sixth filter are sequentially connected to form the first branch; The second diaphragm pump, the second coarse mill, and the seventh filter are sequentially connected to form a second branch; The first branch and the second branch have the same structure; The inlet of the first branch and the inlet of the second branch are both connected to the outlet of the glue-making machine; The outlets of the first branch and the second branch are both connected to the inlet of the coarse grinding tank; The outlets of the first branch and the second branch are both connected to the inlet of the glue-making machine; The outlet of the coarse grinding jar is connected to the return port of the glue-making machine.

8. The conductive paste fabrication system according to claim 7, characterized in that, The fine grinder includes a first fine grinder and a second fine grinder; The third diaphragm pump and the first fine mill are connected in sequence to form a third branch; The fourth diaphragm pump and the second fine mill are sequentially connected to form a fourth branch; The third branch and the fourth branch have the same structure; The first and second fine grinding jars are storage tanks; The feed inlet of the third branch is the feed inlet of the third diaphragm pump; The feed inlet of the fourth branch is the feed inlet of the fourth diaphragm pump; The discharge ports of the third branch and the fourth branch are both connected to the discharge port of the first fine grinding tank. The discharge ports of the third branch and the fourth branch are both connected to the discharge port of the second fine grinding jar.

9. A control method for a conductive paste fabrication system, applied to the conductive paste fabrication system according to any one of claims 1-8, characterized in that, include: Add the solvent into the glue-making machine; A solid material is fed into a glue-making machine; the solid material includes one or more of graphite, carbon nanotubes, and a co-solvent. In the glue-making machine, the solvent and solids are stirred to form a mixed agglomerate. The dispersion disc in the glue-making machine is used to disperse the mixture of solvent and solids into clumps; The dispersed mixed agglomerates are fed into a coarse grinding mill, and the dispersed mixed agglomerates are coarsely ground using the coarse grinding mill. The coarsely ground product is then fed into a coarse grinding tank. The coarse grinding product is inspected for fineness. After the coarse grinding product passes the fineness inspection, the coarse grinding product in the coarse grinding tank is introduced into the ultrasonic fine grinding device. The coarsely ground product is then finely ground using an ultrasonic fine grinding device; the finely ground product is then output as the target product.

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