Preparation equipment and method of high-stability multi-element composite conductive paste

Abstract

The application relates to an automatic preparation equipment for high-stability multi-element composite conductive slurry, which comprises a base, a conveying turntable arranged on the base, a feeding mechanism, a mixing mechanism, a sanding mechanism and a discharging mechanism, a plurality of preparation cylinders in a ring shape are arranged on the conveying turntable through mounting frames, a discharging pipe assembly is arranged at the bottom end of the preparation cylinder, and the feeding mechanism, the mixing mechanism, the sanding mechanism and the discharging mechanism are sequentially arranged around the conveying turntable; the feeding mechanism is used for conveying carbon nanotube powder, mixed surfactant and solvent into the preparation cylinder; the mixing mechanism is used for stirring and mixing the materials in the preparation cylinder; the sanding mechanism is used for sanding treatment of the slurry in the grinding cylinder; and the discharging mechanism is used for abutting against the discharging pipe assembly and discharging the slurry, so that the automatic feeding, mixing, sanding, discharging and cleaning processes are realized, the demand of the flow line circulating slurry preparation process is met, and the preparation efficiency of the conductive slurry is greatly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of conductive paste production equipment, specifically relating to an automated preparation equipment and method for a highly stable multi-element composite conductive paste. Background Technology

[0002] Conductive paste is a special functional composite material with conductive properties. After being printed onto a substrate, it is cured or sintered into a film, serving as a conductive electrode or antenna. Depending on the application field, process requirements, and performance requirements, the conductive functional phase and carrier phase composition of conductive pastes vary, resulting in diverse properties and encompassing a wide range of products. The industrial preparation of lithium-ion conductive paste involves premixing carbon nanotube powder, dispersant, and solvent in a sealed dispersion tank according to a specific ratio. After initial mixing, the paste is injected through a diaphragm pump into a sand mill for dispersion and grinding, then returned to the dispersion tank. This cycle is repeated until a uniformly dispersed conductive paste is achieved.

[0003] Chinese patent document CN202210949351.1 discloses a device for preparing highly dispersed and stable graphene composite conductive paste, including a mixing tank and a hot-melt box. The surface of the mixing tank is equipped with a mixing component, and a feeding hopper is installed on one side of the top of the mixing component, communicating with the mixing tank. A discharging component is installed on one side of the bottom of the mixing tank. A first control panel is installed on the surface of the mixing tank, and an electric conveyor rail is installed on one side of the mixing tank. Two vertical plates are installed on one side of the electric conveyor rail, and rolling components are installed on the inner surfaces of the two vertical plates. Cooling components are installed on the surfaces of the vertical plates, and a second control panel is installed on the surfaces of the vertical plates. A collection box is installed on one side of the vertical plates. A filter component is installed on the top of the hot-melt box, and a protective door is rotatably connected to the surface of the hot-melt box. Multiple hot-melt plates are slidably connected inside the hot-melt box. This device cannot be used for automated production; manual operation for feeding and unloading is required. Furthermore, the production equipment is incomplete and cannot meet the needs of assembly line production, resulting in low efficiency in conductive paste preparation. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses an automated preparation equipment and method for highly stable multi-element composite conductive paste, which solves the problem that the existing preparation equipment has a low degree of automation and cannot be applied to the needs of assembly line production.

[0005] The specific technical solution is as follows:

[0006] An automated preparation device for a highly stable multi-component conductive paste includes a base and a conveying turntable, a feeding mechanism, a mixing mechanism, a grinding mechanism, and a discharging mechanism mounted on the base. The conveying turntable has a centrally located rotating shaft rotatably mounted in the base. The shaft is driven to rotate by a drive motor mounted on the base. Several preparation cylinders arranged in a ring on the conveying turntable are mounted on a mounting frame. Each preparation cylinder has an open top and a discharge pipe assembly at its bottom. The feeding mechanism, mixing mechanism, grinding mechanism, and discharging mechanism are sequentially arranged around the conveying turntable. The feeding mechanism is used to sequentially feed carbon nanotube powder, mixed surfactants, and solvents into each preparation cylinder. The mixing mechanism is used to stir and mix the materials in each preparation cylinder.

[0007] The grinding mechanism includes a housing, a lifting assembly, a sealing cover, a grinding cylinder, and a grinding motor. The lifting assembly is located at one end of the housing. The sealing cover is located above the preparation cylinder and is used to seal the upper end of the preparation cylinder. One end of the sealing cover is fixedly connected to the slider on the lifting assembly through a connecting part. The bottom of the sealing cover is connected to the grinding cylinder through a connecting rod. The outer wall size of the grinding cylinder is adapted to the inner and outer wall sizes of the preparation cylinder, so that the grinding cylinder is inserted downward into the grinding cylinder under the action of the lifting assembly. Several filter holes are opened at the bottom of the grinding cylinder. The grinding medium is provided inside the grinding cylinder. The diameter of the grinding medium is larger than the diameter of the filter holes. A grinding rotor is rotatably provided inside the grinding cylinder. The shaft end of the grinding rotor passes through the grinding cylinder upward and is driven to rotate by the grinding motor installed at the top of the sealing cover, thereby grinding the conductive slurry that enters the grinding cylinder.

[0008] The discharge mechanism includes a first linear module, a sliding plate, and a telescopic spiral conveying device. The sliding plate is mounted on the first linear module via a slider. The front end of the telescopic spiral conveying device is fixedly mounted on the sliding plate. The front end of the telescopic spiral conveying device moves towards the preparation cylinder under the drive of the first linear module and connects with the opening of the discharge pipe assembly. The rear end of the telescopic spiral conveying device is fixedly mounted on the base, and a discharge outlet for discharging conductive slurry is provided on one side of the rear end of the telescopic spiral conveying device.

[0009] Furthermore, the feeding mechanism includes a storage tank, a top cover plate, a screw conveyor assembly, and a pumping assembly. The storage tank is mounted on the base and located on one side of the turntable conveyor mechanism. The top cover plate is horizontally mounted at one end of the storage tank, positioned directly above the preparation cylinder and close to its top. The screw conveyor assembly and the pumping assembly are mounted on the top of the storage tank. The top of the screw conveyor assembly has a feed hopper, and the discharge end of the screw conveyor assembly extends downward through the top cover plate and is flush with its bottom. The screw conveyor assembly is used to convey carbon nanotube powder into the preparation cylinder. The feed end of the pumping assembly is connected to the storage tank via a pipeline, and the discharge end of the pumping assembly extends through the top cover plate via a pipeline and is flush with its bottom. The pumping assembly is used to add a mixed surfactant and solvent into the preparation cylinder.

[0010] Furthermore, the mixing mechanism includes a lifting frame, a sealing plate, and a stirring assembly. The lifting frame is mounted on a base and located on one side of the conveyor turntable. A fixed pipe is provided at the bottom front end of the lifting frame, and the sealing plate is fixedly mounted on the outside of the fixed pipe. The sealing plate is located directly above the preparation cylinder, so that the sealing plate descends under the drive of the lifting mechanism and seals the upper end of the preparation cylinder. The stirring assembly is rotatably mounted inside the fixed pipe. The shaft end of the stirring assembly extends upward into the lifting frame and is driven to rotate by a stirring motor installed at the rear end of the lifting frame. The stirring assembly descends into the preparation cylinder under the drive of the lifting frame and performs stirring operations.

[0011] Furthermore, the discharge pipe assembly includes a discharge pipe and a spiral discharge device. The discharge pipe is equipped with a solenoid valve, and the lower end of the discharge pipe is horizontally connected to the spiral discharge device. One end of the spiral discharge device is constricted, and the opening of the spiral discharge device at the bottom of each preparation cylinder extends to the edge of the conveyor turntable.

[0012] Furthermore, it also includes a cleaning mechanism located between the discharge mechanism and the feeding mechanism. The cleaning mechanism includes a lifting bracket, a top cover plate, and a spray pipe. The lifting bracket includes a hydraulic cylinder and a housing mounted on the piston rod of the hydraulic cylinder. A mounting pipe is longitudinally provided at the bottom front end of the housing. The mounting pipe is located directly above the preparation cylinder. A top cover plate is fixedly installed on the outside of the mounting pipe to cover the top of the preparation cylinder. The spray pipe is rotatably mounted in the mounting pipe through a bearing. A rotary joint is connected to the top end of the spray pipe. The upper end of the rotary joint passes through the housing and is connected to an external water source. A rotary motor for driving the spray pipe to rotate is provided at the bottom rear end of the housing. The lower end of the spray pipe is bent in a "U" shape and is close to the inner wall and bottom of the preparation cylinder. Spray nozzles are provided on one side and at the bottom of the spray pipe.

[0013] Furthermore, the cleaning mechanism also includes a drainage device for connecting with the pipe opening of the spiral discharge device, including a second linear module, a translation plate, a connecting pipe, a telescopic hose, and a drain pipe. The translation plate is slidably mounted on the second linear module via a slider. A connecting pipe for connecting with the pipe opening that retracts at one end of the spiral discharge device is horizontally mounted on the translation plate. The drain pipe is mounted on the base via a fixing bracket, and the drain pipe is connected to the connecting pipe via a telescopic hose.

[0014] Furthermore, the bottom edge of the grinding cylinder is tapered and inclined, and a rubber sealing gasket is provided around the bottom edge of the grinding cylinder for fitting against the inner wall of the preparation cylinder; a cooling channel is provided in the side wall of the grinding cylinder, and the top ends of the two sides of the cooling channel are respectively connected to the coolant circulation device in the machine box through pipes.

[0015] Furthermore, the telescopic screw conveying device includes a telescopic sleeve, a screw conveyor disposed in the telescopic sleeve, and a conveying motor for driving the screw conveyor to rotate. The telescopic sleeve includes an outer sleeve fixedly disposed on the base and an inner sleeve fixedly disposed on the sliding plate. The rear end of the outer sleeve is inclinedly connected to the discharge outlet. The front end of the inner sleeve is closed, and the top of the front end of the inner sleeve is provided with an L-shaped interface pipe. The interface pipe is used to connect with the constricted end of the screw conveying device. The front end of the screw conveyor is rotatably connected to the front end of the inner sleeve. A hollow shaft is sleeved on the rear end of the screw conveyor. The hollow shaft is horizontally slidably connected to the shaft end of the screw conveyor. The rear end of the hollow shaft is fixedly connected to the output shaft of the conveying motor.

[0016] Furthermore, a cleaning cylinder is provided between each two adjacent preparation cylinders. The size and structure of the cleaning cylinder are the same as those of the preparation cylinder, and a discharge pipe assembly is also provided at the bottom of each cleaning cylinder.

[0017] A method for preparing an automated equipment for preparing a highly stable multi-element composite conductive paste, comprising the following specific steps:

[0018] Step 1, material injection: Carbon nanotube powder, mixed surfactant and solvent are added into the preparation cylinder. After the material injection is completed, the conveyor turntable moves the preparation cylinder to the mixing mechanism.

[0019] Step 2, mixing: The top of the preparation cylinder is sealed with a cover plate, and then the stirring assembly rotates to mix the raw materials. After mixing is completed, the conveyor turntable moves the preparation cylinder to the sand milling mechanism.

[0020] Step 3, sand milling: The sand milling cylinder descends and embeds itself into the preparation cylinder. Then, the grinding rotor drives the grinding media to sand mill the slurry to form a conductive slurry. After sand milling is completed, the conveying turntable drives the preparation cylinder to the discharge mechanism.

[0021] Step 4, discharge: Extend the front end of the telescopic screw conveyor and connect it with the pipe opening of the discharge pipe assembly. Then, the solenoid valve is opened, the screw discharge device is started, and the conductive slurry is discharged from the discharge outlet. After the discharge is completed, the conveying turntable drives the preparation cylinder to the cleaning mechanism.

[0022] Step 5, cleaning and drainage: lower the spray pipe into the preparation cylinder and rotate it while spraying. At the same time, connect the connecting pipe to the inlet of the spiral discharge device so that the water in the preparation cylinder is discharged from the drain pipe. After cleaning, close the solenoid valve, and the conveyor turntable drives the preparation cylinder to move back to the feeding mechanism and repeat steps 1 to 5.

[0023] The beneficial effects of this invention are reflected in:

[0024] This invention uses a conveyor turntable to drive the preparation cylinder through various mechanisms in sequence, eliminating the need for manual control of loading and unloading. It achieves automated processes such as feeding, mixing, grinding, discharging, and cleaning, meeting the needs of automated production line slurry preparation and greatly improving the efficiency of conductive slurry preparation.

[0025] In this invention, the sand milling mechanism is fully embedded downward into the preparation cylinder by a sand milling cylinder with filter holes at the bottom, so that the slurry enters the sand milling cylinder through the filter holes, and then the grinding rotor drives the grinding media to grind the slurry, realizing vertical sand milling treatment, which is suitable for production line preparation.

[0026] The present invention provides a cleaning cylinder between two adjacent preparation cylinders on the conveyor turntable, so that the stirring assembly and the grinding cylinder can enter the cleaning cylinder for rotation and cleaning, thereby removing the residual slurry adhering to the device and ensuring the accuracy of slurry preparation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure between the feeding mechanism and the grinding mechanism in this invention.

[0029] Figure 3 This is a schematic diagram of the structure between the mixing mechanism and the discharging mechanism in this invention.

[0030] Figure 4 This is a schematic diagram of the cleaning mechanism and drainage device in this invention.

[0031] Figure 5 This is a schematic diagram of the telescopic screw conveyor device in this invention.

[0032] Figure 6 This is a cross-sectional view of the telescopic screw conveyor device in this invention.

[0033] 1. Base, 2. Conveying turntable, 21. Rotating shaft, 22. Drive motor, 3. Preparation cylinder, 31. Discharge pipe, 31. Solenoid valve, 31. Spiral discharge device, 32. Mounting frame, 33.

[0034] Feeding mechanism 4, storage bin 41, top cover plate 42, screw conveyor assembly 43, pumping assembly 44;

[0035] 5. Mixing mechanism; 51. Lifting frame; 52. Fixed pipe; 53. Cover plate; 54. Mixing assembly; 55. Mixing motor;

[0036] 6. Grinding mechanism, 61. Housing, 611. Coolant circulation device, 62. Lifting assembly, 621. Lifting guide rail, 622. Lifting motor, 623. Lifting screw, 625. Slider, 63. Sealing cover, 631. Connecting part, 632. Connecting rod, 64. Grinding cylinder, 641. Cooling channel, 642. Rubber sealing gasket, 65. Grinding motor, 66. Grinding rotor;

[0037] 7. Discharge mechanism, 71. First linear module, 72. Sliding plate, 73. Telescopic screw conveyor, 731. Telescopic sleeve, 7311. Outer sleeve, 7312. Inner tube, 7313. Interface tube, 7314. Discharge outlet, 7314. Spiral auger, 732. Hollow shaft, 734. Conveying motor, 735.

[0038] Cleaning mechanism 8, lifting support 81, hydraulic cylinder 811, machine housing 812, top cover plate 82, spray pipe 83, nozzle 831, mounting pipe 84, rotary joint 85, rotary motor 86;

[0039] Drainage device 9, second linear module 91, translation plate 92, connecting pipe 93, telescopic hose 94, drain pipe 95;

[0040] 10 cleaning drums. Detailed Implementation

[0041] To make the technical solution of this invention clearer and more explicit, the invention will be further described below with reference to the accompanying drawings. Any solution derived by equivalent substitution and conventional reasoning of the technical features of this invention falls within the protection scope of this invention. The fixed connections and fixed installations mentioned in this invention are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0042] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Please see Figure 1-4 This embodiment provides an automated preparation device for a highly stable multi-element composite conductive paste, including a base 1 and a conveying turntable 2, a feeding mechanism 4, a mixing mechanism 5, a grinding mechanism 6, and a discharging mechanism 7 mounted on the base 1. The conveying turntable 2 has a centrally located rotating shaft 21 rotatably mounted in the base 1. The rotating shaft 21 is driven to rotate by a drive motor 22 mounted on the base 1. Four preparation cylinders 3 arranged in a ring shape are mounted on the conveying turntable 2 via a mounting bracket 33. The upper ends of the preparation cylinders 3 are open. The bottom end is equipped with a discharge pipe assembly, which includes a discharge pipe 31 and a spiral discharge device 32. The discharge pipe 31 is equipped with a solenoid valve 311, and the lower end of the discharge pipe 31 is horizontally connected to the spiral discharge device 32. The spiral discharge device 32 is a spiral conveyor, and one end of the spiral discharge device 32 is open, forming a discharge port. This port is constricted, and the port of the spiral discharge device 32 at the bottom of each preparation cylinder 3 extends to the edge of the conveying turntable 2 for docking with the discharge mechanism 7. A feeding mechanism 4, a mixing mechanism 5, a grinding mechanism 6, and a discharge mechanism 7 are sequentially arranged around the conveying turntable 2. The feeding mechanism 4 is used to feed carbon nanotube powder, mixed surfactants, and solvents into each preparation cylinder 3. The mixing mechanism 5 is used to stir and mix the materials in each preparation cylinder 3. The grinding mechanism 6 is used to grind the materials to form a conductive slurry. The discharge mechanism 7 is used to dock with the discharge pipe assembly and perform discharge processing.

[0044] The feeding mechanism includes a storage tank 41, an upper cover plate 42, a screw conveyor assembly 43, and a pumping assembly 44. The storage tank 41 is mounted on the base 1 and located on one side of the turntable conveyor mechanism. The upper cover plate 42 is horizontally mounted at one end of the storage tank 41. The upper cover plate 42 is located directly above the preparation cylinder 3 and close to the top of the preparation cylinder 3. The screw conveyor assembly 43 and the pumping assembly 44 are mounted on the top of the storage tank 41. The screw conveyor assembly 43 is a screw conveyor with a feed hopper at the top. The discharge end of the screw conveyor assembly 43 passes downward through the upper cover plate 42 and is flush with the bottom of the upper cover plate 42. The screw conveyor assembly 43 is used to convey carbon nanotube powder into the preparation cylinder 3. The pumping assembly 44 is a plunger pump. The feed end of the pumping assembly 44 is connected to the storage tank 41 through a pipeline. The discharge end of the pumping assembly 44 passes through the upper cover plate 42 through a pipeline and is flush with the bottom of the upper cover plate 42. The pumping assembly 44 is used to add mixed surfactants and solvents into the preparation cylinder 3.

[0045] The mixing mechanism 5 includes a lifting frame 51, a cover plate 53, and a stirring assembly 54. The lifting frame 51 is mounted on the base 1 via a hydraulic cylinder 811 and is located on one side of the conveyor turntable 2. A fixing pipe 52 is provided at the bottom front end of the lifting frame 51, and a cover plate 53 is fixedly mounted on the outside of the fixing pipe 52. The cover plate 53 is located directly above the preparation cylinder 3, so that the cover plate 53 is lowered under the drive of the lifting mechanism and seals the upper end of the preparation cylinder 3. The stirring assembly 54 is rotatably mounted inside the fixing pipe 52. The shaft end of the stirring assembly 54 extends upward into the lifting frame 51 and is driven to rotate by a stirring motor 55 installed at the rear end of the lifting frame 51. The stirring assembly 54 is lowered into the preparation cylinder 3 under the drive of the lifting frame 51 and performs stirring operations.

[0046] The grinding mechanism 6 includes a housing 61, a lifting assembly 62, a sealing cover 63, a grinding cylinder 64, and a grinding motor 65. The lifting assembly 62 is located at one end of the housing 61. The lifting assembly 62 includes a lifting guide rail 621, a lifting motor 622, and a lifting screw 623. A slider 625 is slidably mounted on the lifting guide rail 621. One end of the slider 625 enters the housing 61 and is threadedly connected to the longitudinally arranged lifting screw 623 within the housing 61. The bottom end of the lifting screw 623 is driven to rotate by the lifting motor 622. The sealing cover 63 is located above the preparation cylinder 3 and is used to seal the upper end of the preparation cylinder 3. One end of the sealing cover 63 is fixed to the slider 625 on the lifting assembly 62 via a connecting part 631. The bottom of the sealing cover 63 is connected to the grinding cylinder 64 via a connecting rod 632. The outer wall size of the grinding cylinder is adapted to the inner and outer wall sizes of the preparation cylinder 3, so that the grinding cylinder is inserted downward into the grinding cylinder under the action of the lifting component 62. The top of the grinding cylinder 64 is closed, and the bottom of the grinding cylinder 64 has several filter holes. The grinding medium (not shown in the figure) is provided inside the grinding cylinder 64. The grinding medium is a steel ball, and the diameter of the grinding medium is larger than the diameter of the filter holes. A grinding rotor 66 is rotatably installed inside the grinding cylinder 64. The shaft end of the grinding rotor 66 passes through the grinding cylinder upward and is driven to rotate by the grinding motor 65 installed at the top of the sealing cover 63, thereby grinding the conductive slurry that enters the grinding cylinder 64.

[0047] In this embodiment, the bottom edge of the grinding cylinder 64 is tapered and inclined, and a rubber sealing gasket 642 is provided around the bottom edge of the grinding cylinder 64 to fit against the inner wall of the preparation cylinder 3, thereby improving the sealing performance and preventing the slurry from flowing out from the gap between the grinding cylinder 64 and the preparation cylinder 3 when the grinding cylinder 64 is lowered. A cooling channel 641 is provided in the side wall of the grinding cylinder 64, and the top ends of the two sides of the cooling channel 641 are respectively connected to the coolant circulation device 611 in the casing 61 through pipes, thereby providing a cooling effect on the side wall of the grinding cylinder 64. The coolant circulation device 611 adopts the existing circulating cooling device, which will not be described in detail here.

[0048] like Figure 5-6As shown, the discharge mechanism 7 includes a first linear module 71, a sliding plate 72, and a telescopic screw conveyor 73. The sliding plate 72 is mounted on the first linear module 71 via a slider 625. The front end of the telescopic screw conveyor 73 is fixedly mounted on the sliding plate 72. The front end of the telescopic screw conveyor 73 moves towards the preparation cylinder 3 under the drive of the first linear module 71 and connects with the opening of the discharge pipe assembly. The rear end of the telescopic screw conveyor 73 is fixedly mounted on the base 1, and a discharge outlet 7314 for discharging conductive slurry is provided on one side of the rear end of the telescopic screw conveyor 73.

[0049] The telescopic screw conveyor 73 includes a telescopic sleeve 731, a screw conveyor 732 disposed in the telescopic sleeve 731, and a conveying motor 735 for driving the screw conveyor 732 to rotate. The telescopic sleeve 731 includes an outer sleeve 7311 fixedly disposed on the base 1 and an inner sleeve 7312 fixedly disposed on the sliding plate 72. The rear end of the outer sleeve 7311 is inclinedly connected to the discharge outlet 7314. The front end of the inner sleeve 7312 is closed, and the top of the front end of the inner sleeve is provided with an L-shaped interface pipe 7313. The interface pipe 7313 is used to connect with the screw conveyor 32. The constricted ends are connected to each other, and the front end of the spiral auger 732 is rotatably connected to the front end of the inner tube 7312. The rear end of the spiral auger 732 is fitted with a hollow shaft 734, which is horizontally slidably connected to the shaft end of the spiral auger 732. The rear end of the hollow shaft 734 is fixedly connected to the output shaft of the conveying motor 735, and auger blades are also provided on the hollow shaft 734. Thus, when the telescopic sleeve 731 extends, the spiral auger 732 moves to the front end under the drive of the inner tube, and the conveying motor 735 can still drive the spiral auger 732 to rotate for material discharge through the hollow shaft 734.

[0050] The preparation equipment also includes a cleaning mechanism 8, which is located on one side of the conveyor turntable 2 and between the discharge mechanism and the feeding mechanism 4. The cleaning mechanism 8 includes a lifting support 81, a top cover plate 82, and a spray pipe 83. The structure of the lifting support 81 is similar to that of the lifting frame 51. The lifting support 81 includes a hydraulic cylinder 811 and a housing 812 mounted on the piston rod of the hydraulic cylinder 811. A mounting pipe 84 is longitudinally provided at the bottom front end of the housing 812. The mounting pipe 84 is located directly above the preparation cylinder 3. A top cover plate 82 is fixedly installed to cover the top of the preparation cylinder 3. A spray pipe 83 is rotatably installed in the mounting pipe 84 via a bearing. A rotary joint 85 is connected to the top of the spray pipe 83. The upper end of the rotary joint 85 passes through the housing 812 and is connected to an external water source pipe. A rotary motor 86 is installed at the bottom rear end of the housing 812 to drive the spray pipe 83 to rotate. The lower end of the spray pipe 83 is bent in a "U" shape and is close to the inner wall and bottom of the preparation cylinder 3. Spray nozzles 831 are installed on one side and at the bottom of the spray pipe 83.

[0051] The cleaning mechanism 8 also includes a drainage device 9 for connecting with the pipe opening of the spiral discharge device 32, including a second linear module 91, a translation plate 92, a connecting pipe 93, a telescopic hose 94, and a drain pipe 95. The translation plate 92 is slidably mounted on the second linear module 91 via a slider 625. The connecting pipe 93 is horizontally mounted on the translation plate 92 for connecting with the pipe opening that contracts at one end of the spiral discharge device 32. The drain pipe 95 is mounted on the base 1 via a fixing bracket, and the drain pipe 95 is connected to the connecting pipe 93 via a telescopic hose 94, so that the spray pipe 83 can spray and clean the inside of the preparation cylinder 3.

[0052] In this embodiment, to ensure the accuracy of the conductive slurry ratio and remove the residual slurry adhering to the stirring assembly 54 and the grinding cylinder 64, a cleaning cylinder 10 is provided between each of the two adjacent preparation cylinders 3. There are four cleaning cylinders 10, and the size and structure of the cleaning cylinders 10 are the same as those of the preparation cylinders 3. The cleaning cylinders 10 are filled with water. After the slurry in one preparation cylinder 3 has been processed, the conveying turntable 2 rotates the cleaning cylinder 10 to the mixing mechanism 5 and the grinding mechanism 6. Then, the stirring assembly 54 and the grinding cylinder 64 descend and immerse themselves in the cleaning cylinders 10 for rotational cleaning. Each cleaning cylinder 10 is also provided with a discharge pipe assembly at the bottom. When the cleaning cylinder 10 rotates to the cleaning mechanism 8, the discharge pipe assembly connects with the drainage device 9 to drain water. After the drainage is completed, the solenoid valve 311 closes, and the spray pipe 83 descends into the cleaning cylinder 10 to inject water for the next cleaning process.

[0053] A method for preparing an automated equipment for preparing a highly stable multi-element composite conductive paste, comprising the following specific steps:

[0054] Step 1, material injection: Carbon nanotube powder is added into the preparation cylinder 3 through the spiral conveying component 43, and mixed surfactant and solvent are added into the preparation cylinder 3 through the two pumping components 44. After the material injection is completed, the conveying turntable 2 drives the preparation cylinder 3 to move to the mixing mechanism 5.

[0055] Step 2, mixing: The lifting frame 51 lowers the cover plate 53 and seals the top of the preparation cylinder 3. Then the stirring motor 55 drives the stirring assembly 54 to rotate and mix the raw materials. After mixing, the lifting frame 51 is reset and the conveying turntable 2 moves the preparation cylinder 3 to the sand milling mechanism 6.

[0056] Step 3, sand milling. The sand milling cylinder 64 descends and embeds itself into the preparation cylinder 3. Then, the grinding rotor 66 drives the grinding media to sand mill the slurry to form a conductive slurry. After sand milling is completed, the sand milling cylinder 64 is reset, and the conveying turntable 2 drives the preparation cylinder 3 to move to the discharge mechanism 7.

[0057] Step 4, discharge: Extend the front end of the telescopic screw conveyor 73 and connect it with the pipe opening of the discharge pipe assembly. Then, the solenoid valve 311 is opened and the screw discharge device 32 is started, so that the conductive slurry is discharged from the discharge outlet 7314. After the discharge is completed, the conveying turntable 2 drives the preparation cylinder 3 to move to the cleaning mechanism 8.

[0058] Step 5, cleaning and drainage: lower the spray pipe 83 into the preparation cylinder 3 and rotate it while spraying. At the same time, connect the connecting pipe 93 to the opening of the spiral discharge device 32 so that the water in the preparation cylinder 3 can be discharged from the drain pipe 95. After cleaning, the solenoid valve 311 is closed, and the conveying turntable 2 drives the preparation cylinder 3 to reposition to the feeding mechanism 4 and repeat steps one to five.

[0059] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A preparation device for a high-stability multi-component composite conductive paste, comprising a base (1) and a conveying turntable (2), a feeding mechanism (4), a mixing mechanism (5), a grinding mechanism (6), and a discharging mechanism (7) disposed on the base (1). The conveying turntable (2) has a rotating shaft (21) at its center and is rotatably disposed in the base (1). The rotating shaft (21) is driven to rotate by a drive motor (22) mounted on the base (1). Several preparation cylinders (3) arranged in a ring shape are disposed on the conveying turntable (2) by a mounting frame (33). (3) The upper end is open, and the bottom end of the preparation cylinder (3) is provided with a discharge pipe assembly. The feeding mechanism (4), mixing mechanism (5), grinding mechanism (6) and discharge mechanism (7) are arranged in sequence around the conveying turntable (2), so that the conveying turntable (2) drives the preparation cylinder (3) to perform feeding, mixing, grinding and discharge processes in sequence; the feeding mechanism (4) is used to convey carbon nanotube powder, mixed surfactant and solvent into the preparation cylinder (3); the mixing mechanism (5) is used to stir and mix the materials in the preparation cylinder (3); The grinding mechanism (6) includes a housing (61), a lifting assembly (62), a sealing cover (63), a grinding cylinder (64), and a grinding motor (65). The lifting assembly (62) is located at one end of the housing (61). The sealing cover (63) is located above the preparation cylinder (3) and is used to seal the upper end of the preparation cylinder (3). One end of the sealing cover (63) is fixedly connected to the slider (625) on the lifting assembly (62) through a connecting part (631). The bottom of the sealing cover (63) is connected to the grinding cylinder (64) through a connecting rod (632). The outer wall size is adapted to the inner and outer wall size of the preparation cylinder (3), so that the grinding cylinder is driven by the lifting component (62) to be embedded into the grinding cylinder downward. The bottom end of the sand grinding cylinder (64) is provided with several filter holes. The grinding medium is provided inside the sand grinding cylinder (64). The diameter of the grinding medium is larger than the diameter of the filter holes. The grinding rotor (66) is rotated inside the sand grinding cylinder (64). The shaft end of the grinding rotor (66) passes through the grinding cylinder upward and is driven to rotate by the grinding motor (65) installed on the top of the sealing cover (63), thereby sand grinding the conductive slurry that enters the sand grinding cylinder (64). The discharge mechanism (7) includes a first linear module (71), a sliding plate (72), and a telescopic screw conveyor (73). The sliding plate (72) is mounted on the first linear module (71) via a slider (625). The front end of the telescopic screw conveyor (73) is fixedly mounted on the sliding plate (72). The front end of the telescopic screw conveyor (73) moves toward the preparation cylinder (3) under the drive of the first linear module (71) and connects with the pipe opening of the discharge pipe assembly. The rear end of the telescopic screw conveyor (73) is fixedly mounted on the base (1), and a discharge outlet (7314) for discharging conductive slurry is provided on one side of the rear end of the telescopic screw conveyor (73).

2. The equipment for preparing a high-stability multi-element composite conductive paste as described in claim 1, characterized in that, The feeding mechanism (4) includes a storage bin (41), a top cover plate (42), a screw conveyor assembly (43), and a pumping assembly (44). The storage bin (41) is mounted on the base (1) and located on one side of the turntable conveyor mechanism. The top cover plate (42) is horizontally mounted at one end of the storage bin (41). The top cover plate (42) is located directly above the preparation cylinder (3) and close to the top of the preparation cylinder (3). The screw conveyor assembly (43) and the pumping assembly (44) are mounted on the top of the storage bin (41). The top is provided with a feeding hopper. The discharge end of the spiral conveying component (43) passes through the upper cover plate (42) and is flush with the bottom of the upper cover plate (42). The spiral conveying component (43) is used to convey carbon nanotube powder into the preparation cylinder (3). The feeding end of the pumping component (44) is connected to the storage tank (41) through a pipeline. The discharge end of the pumping component (44) passes through the upper cover plate (42) through a pipeline and is flush with the bottom of the upper cover plate (42). The pumping component (44) is used to add mixed surfactant and solvent into the preparation cylinder (3).

3. The equipment for preparing a high-stability multi-element composite conductive paste as described in claim 1, characterized in that, The mixing mechanism (5) includes a lifting frame (51), a cover plate (53), and a stirring assembly (54). The lifting frame (51) is set on the base (1) and located on one side of the conveyor turntable (2). A fixed pipe (52) is set at the bottom front end of the lifting frame (51). The cover plate (53) is fixedly set on the outside of the fixed pipe (52). The cover plate (53) is located directly above the preparation cylinder (3), so that the cover plate (53) is lowered under the drive of the lifting mechanism and seals the upper end of the preparation cylinder (3). The stirring assembly (54) is rotatably set inside the fixed pipe (52). The shaft end of the stirring assembly (54) extends upward into the lifting frame (51) and is driven to rotate by the stirring motor (55) installed at the rear end of the lifting frame (51). The stirring assembly (54) is lowered into the preparation cylinder (3) under the drive of the lifting frame (51) and performs stirring operations.

4. The equipment for preparing a highly stable multi-element composite conductive paste as described in claim 3, characterized in that, The discharge pipe assembly includes a discharge pipe (31) and a spiral discharge device (32). The discharge pipe (31) is equipped with a solenoid valve (311). The lower end of the discharge pipe (31) is horizontally connected to the spiral discharge device (32). One end of the spiral discharge device (32) is constricted. The opening of the spiral discharge device (32) at the bottom of each preparation cylinder (3) extends to the edge of the conveying turntable (2).

5. The equipment for preparing a high-stability multi-element composite conductive paste as described in claim 4, characterized in that, It further includes a cleaning mechanism (8), the cleaning mechanism (8) is located between the discharging mechanism and the feeding mechanism (4), and the cleaning mechanism (8) includes a lifting bracket (81), a top cover plate (82), and a spray pipe (83). The lifting bracket (81) includes a hydraulic cylinder (811) and a casing (812) arranged on the piston rod of the hydraulic cylinder (811). At the bottom of the front end of the casing (812), an installation pipe (84) is longitudinally provided. The installation pipe (84) is located directly above the preparation cylinder (3). A top cover plate (82) for covering the top of the preparation cylinder (3) is fixedly arranged on the outer side of the installation pipe (84). The spray pipe (83) is rotatably arranged in the installation pipe (84) through a bearing. The top end of the spray pipe (83) is connected with a rotary joint (85). The upper end of the rotary joint (85) penetrates through the casing (812) and is connected with an external water source. A rotary motor (86) for driving the spray pipe (83) to rotate is arranged at the bottom of the rear end of the casing (812). The lower end of the spray pipe (83) is bent in a "C" shape and is arranged close to the inner wall and the bottom end of the preparation cylinder (3). Nozzles (831) are arranged on one side and the bottom of the spray pipe (83).

6. The equipment for preparing a high-stability multi-element composite conductive paste as described in claim 5, characterized in that, The cleaning mechanism (8) further includes a drainage device (9) for对接管相对接的排水装置(9),包括第二直线模组(91)、平移板(92)、对接管(93)、伸缩软管(94)、排水管(95),所述第二直线模组(91)上通过滑块(625)滑动设置平移板(92),平移板(92)上水平设置用于与螺旋排料装置(32)一端收缩的管口相对接的对接管(93),所述排水管(95)通过固定架设置于底座(1)上,且排水管(95)与对接管(93)之间通过伸缩软管(94)连接。 7. The equipment for preparing a high-stability multi-element composite conductive paste as described in claim 1, characterized in that, The bottom edge of the sanding cylinder (64) is inclined in a conical shape, and a rubber sealing pad (642) for fitting with the inner wall of the preparation cylinder (3) is provided on the bottom edge of the sanding cylinder (64); a cooling channel (641) is provided in the side wall of the sanding cylinder (64). The two top ends on both sides of the cooling channel (641) are respectively connected to the coolant circulation device (611) in the chassis (61) through pipelines. It seems there is some incorrect or incomplete information in the text you provided. For example, in the description of the drainage device in , the text "用于与螺旋排料装置(32)的管口相对接的排水装置(9),包括第二直线模组(91)、平移板(92)、对接管(93)、伸缩软管(94)、排水管(95),所述第二直线模组(91)上通过滑块(625)滑动设置平移板(92),平移板(92)上水平设置用于与螺旋排料装置(32)一端收缩的管口相对接的对接管(93),所述排水管(95)通过固定架设置于底座(1)上,且排水管(95)与对接管(93)之间通过伸缩软管(94)连接。" has some unclear parts like "对接管相对接的排水装置(9)". Please check and correct it if possible for a more accurate translation.

8. The equipment for preparing a high-stability multi-element composite conductive paste as described in claim 4, characterized in that, The telescopic screw conveyor (73) includes a telescopic sleeve (731), a screw conveyor disposed in the telescopic sleeve (731), and a conveying motor (735) for driving the screw conveyor (732) to rotate. The telescopic sleeve (731) includes an outer sleeve (7311) fixedly disposed on the base (1) and an inner tube (7312) fixedly disposed on the sliding plate (72). The rear end of the outer sleeve (7311) is inclinedly connected to the discharge outlet (7314), and the front end of the inner tube (7312) is... The end is closed, and the front end of the inner tube is provided with an interface tube (7313). The interface tube (7313) is used to connect with the constricted end of the spiral discharge device (32). The front end of the spiral auger (732) is rotatably connected to the front end of the inner tube (7312). The rear end of the spiral auger (732) is fitted with a hollow shaft (734). The hollow shaft (734) is horizontally slidably connected to the shaft end of the spiral auger (732). The rear end of the hollow shaft (734) is fixedly connected to the output shaft of the conveying motor (735).

9. The equipment for preparing a high-stability multi-element composite conductive paste as described in claim 4, characterized in that, A cleaning cylinder (10) is provided between each of the two adjacent preparation cylinders (3). The size and structure of the cleaning cylinder (10) are the same as those of the preparation cylinder (3), and the discharge pipe assembly is also provided at the bottom of each cleaning cylinder (10).

10. A method for preparing a highly stable multi-element composite conductive paste, using the equipment for preparing a highly stable multi-element composite conductive paste as described in claim 6, comprising the following specific steps: Step 1, material injection: Carbon nanotube powder, mixed surfactant and solvent are added into the preparation cylinder (3). After the material injection is completed, the conveying turntable (2) drives the preparation cylinder (3) to move to the mixing mechanism (5). Step 2, mixing: the top of the preparation cylinder (3) is sealed by the cover plate (53), and then the stirring assembly (54) rotates and mixes the raw materials. After mixing, the conveying turntable (2) drives the preparation cylinder (3) to the sand milling mechanism (6). Step 3, sand grinding. The sand grinding cylinder (64) descends and embeds itself into the preparation cylinder (3). Then, the grinding rotor (66) drives the grinding media to sand grind the slurry to form a conductive slurry. After sand grinding is completed, the conveying turntable (2) drives the preparation cylinder (3) to move to the discharge mechanism (7). Step 4, discharge: extend the front end of the telescopic screw conveyor (73) and connect it with the pipe opening of the discharge pipe assembly. Then, the solenoid valve (311) is opened and the screw discharge device (32) is started, so that the conductive slurry is discharged from the discharge outlet (7314). After the discharge is completed, the conveying turntable (2) drives the preparation cylinder (3) to move to the cleaning mechanism (8). Step 5, cleaning and drainage: lower the spray pipe (83) into the preparation cylinder (3) and rotate it while spraying. At the same time, connect the connecting pipe (93) to the pipe opening of the spiral discharge device (32) so that the water in the preparation cylinder (3) is discharged from the drain pipe (95). After cleaning, the solenoid valve (311) is closed, and the conveying turntable (2) drives the preparation cylinder (3) to reposition to the feeding mechanism (4) and repeat steps one to five.

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