Material transfer conveyor and method

Abstract

This invention relates to the technical field of paint supply devices for enameled wire production, specifically a material transfer and conveying device and method, including a transfer mechanism and an adding mechanism. The transfer mechanism can be connected to a raw material ton for centralized supply of raw materials, and the adding mechanism can be connected to a solvent ton for adding solvent. Both the transfer mechanism and the adding mechanism are connected to a mixing mechanism for mixing and diluting the raw materials and solvent. The transfer mechanism includes a transfer paint tank, a partition is fixedly installed inside the transfer paint tank, a lid is rotatably installed on the top of the transfer paint tank, a baffle is fixedly installed at the bottom of the lid, and a feed pipe is fixedly installed through the lid. By setting up a transfer mechanism, a mixing mechanism, and an adding mechanism, and coordinating with a control method, this invention achieves fully automated control of the entire process from raw material extraction, transfer, dilution and mixing to distribution to the terminal paint box, significantly reducing manual intervention and improving production efficiency and the degree of system automation.

Description

Technical Field

[0001] This invention relates to the technical field of enameled wire production enamel supply equipment, specifically a material transfer and conveying device and method. Background Technology

[0002] In the production of enameled wire, a stable and efficient supply of insulating varnish is crucial for ensuring product quality and production continuity. Currently, traditional varnish supply methods generally suffer from the following drawbacks: Raw paint and diluent solvents are typically stored in large tonnes. During production, manual handling is required to open the tonnes, pump them out, and transfer them to mixing equipment for dilution and mixing before finally dispensing them into paint tanks on each production line. This entire process is not only labor-intensive and inefficient, but also poses safety risks due to human contact with chemicals, and the accuracy of metering and proportioning is difficult to guarantee. Furthermore, when changing between different batches or models of raw material tonnes, if shared pipelines and temporary storage equipment are used, residual old paint can easily mix with new paint, leading to fluctuations in the paint formulation and directly affecting key quality indicators such as the insulation performance and thickness uniformity of the enameled wire coating.

[0003] In view of this, we propose a material transfer and conveying device and method. Summary of the Invention

[0004] The purpose of this invention is to provide a material transfer and conveying device and method that solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A material transfer and conveying device includes a transfer mechanism and an adding mechanism. The transfer mechanism can be connected to a raw material ton for centralized supply of raw materials, and the adding mechanism can be connected to a solvent ton for adding solvent. Both the transfer mechanism and the adding mechanism are connected to a mixing mechanism for mixing and diluting the raw materials and solvents. The transfer mechanism includes a transfer paint bucket, a partition is fixedly installed inside the transfer paint bucket, a bucket lid is rotatably installed on the top of the transfer paint bucket, a baffle is fixedly installed at the bottom of the bucket lid, a feed pipe is fixedly installed through the bucket lid, and the connection between the feed pipe and the bucket lid is a flexible hose.

[0006] Preferably, the transfer paint bucket and the partition form a compartment, and a discharge pipe is fixedly installed at the bottom of the transfer paint bucket. The discharge pipe is connected to multiple compartments, and a solenoid valve is provided at each connection point. The other end of the discharge pipe is fixedly connected to a paint pump, and the outlet of the paint pump is connected to a paint delivery pipe.

[0007] Preferably, the transfer mechanism further includes a feed pump, the outlet of which is connected to the feed pipe, and the inlet of which is connected to a suction pipe. The end of the suction pipe away from the feed pump is a flexible hose, and an insert is fixedly installed on the flexible hose. The insert is inserted into the inside of the raw material ton.

[0008] Preferably, the mixing mechanism includes multiple mixing tanks, each of which is connected to a paint conveying pipe. A solenoid valve is provided at the connection point between the paint conveying pipe and the mixing tank. A mixing assembly consisting of a motor and a mixing paddle is provided inside each mixing tank. A discharge pipe is fixedly installed on each mixing tank, and a solenoid valve is provided on the discharge pipe. The discharge pipe is connected to a paint tank.

[0009] Preferably, the adding mechanism includes a solvent tank, a liquid extraction pipe is fixedly installed at the top of the solvent tank, a solvent pump is fixedly connected to the liquid extraction pipe, an inlet pipe is fixedly installed at the outlet of the solvent pump, and the inlet pipe is connected to the solvent ton tank.

[0010] Preferably, a liquid outlet pipe is fixedly installed at the bottom of the solvent tank, a liquid pump is fixedly connected to the liquid outlet pipe, a liquid pump outlet is fixedly connected to a liquid pump outlet, the liquid pump outlet is connected to the stirring tank, and a solenoid valve is provided at the connection point between the liquid pump outlet and the stirring tank.

[0011] Preferably, the intermediate paint tank, solvent tank and paint box are all equipped with level gauges, the stirring tank is equipped with a viscometer, and pressure sensors and flow sensors are fixedly installed on the discharge pipe, paint conveying pipe, liquid outlet pipe and liquid delivery pipe. The paint conveying pipe is equipped with a viscometer at the position of the solenoid valve.

[0012] The present invention also provides a material transfer and conveying method, comprising the following steps: S1. Data entry: Based on the production plan, the required paint concentration, paint quantity, and priority for each production line are entered into the host computer. S2, conveying: based on the data from S1, the transfer mechanism and the adding mechanism respectively fill the mixing tank with the original paint and solvent for mixing, and the mixed paint enters the paint tank; S3, Replenishment: When the level gauge in the paint tank reaches the alarm line, the operation of S2 is repeated to replenish the paint tank through PLC feedback control. The replenishment sequence is controlled according to the comprehensive urgency index Si, where Si=α*(Lit / Lis)+β*Wi+γ*(1 / Di). S4. Raw material replacement: Quickly switch to a new raw material container via a pipe. During pipe replacement, the container lid rotates, allowing the new raw material to enter the new compartment, avoiding cross-contamination between raw materials. S5, pipe cleaning. After the raw material is replaced in S4, the mixed paint is directly transported to the smallest paint tank in Wi by PLC control for mixing, and the old paint in the pipe is completely discharged.

[0013] Preferably, in S3, the comprehensive urgency index Si = α*(Lit / Lis) + β*Wi + γ*(1 / Di) is defined as follows: Lit / Lis is the ratio of the current liquid level to the safe liquid level in the paint tank. The smaller the ratio, the more urgent the situation. Wi is the production priority of the production line where the paint tank is located. Di is the equivalent pipeline resistance from the intermediate paint bucket to the paint tank, indicating the speed and energy consumption of the conveying process. α, β, and γ are adjustable coefficients used to balance the influence of different factors.

[0014] Preferably, Wi ranges from 0 to 1, the value of Di is positively correlated with the path length of the pipe and the number of bends, and the ranges of α, β, and γ are all 0 to 1, and α+β+γ=1.

[0015] By employing the above technical solution, the present invention provides a material transfer and conveying device and method that has at least the following beneficial effects: (1) By setting up a transfer mechanism, a mixing mechanism and an adding mechanism, and in conjunction with a control method, the present invention realizes full-process automated control from raw material extraction, transfer, dilution and mixing to distribution to the terminal paint box, which greatly reduces manual intervention and improves production efficiency and systemicity.

[0016] (2) This invention divides the transfer paint bucket into three independent compartments by setting a "Y"-shaped partition inside the transfer paint bucket. With the help of a rotatable bucket lid and baffle, different batches of raw materials can be physically separated and stored. When switching to a new raw material ton bucket via the insertion tube, simply rotate the bucket lid to align the feed pipe with a new compartment to achieve complete isolation and transfer of new and old raw materials. Combined with the flushing of the entire pipeline by the new paint, the problem of quality fluctuation of enameled wire caused by paint mixing can be avoided.

[0017] (3) The present invention, through a method applied to a material transfer and conveying device, can directly calculate the optimal paint replenishment sequence by using the dynamic priority calculation method of "comprehensive urgency index Si", ensuring that the key production line is not interrupted by material supply, while optimizing the conveying path, reducing the ineffective start and stop of the pump, and saving energy consumption. Attached Figure Description

[0018] The accompanying drawings, which are provided to further illustrate the invention, constitute a part of this application: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram illustrating the operation of the present invention; Figure 3 For the present invention Figure 1 Top view; Figure 4 This is a schematic diagram of the disassembled structure of the transfer mechanism of the present invention; Figure 5 This is a schematic diagram of the working structure of the bucket lid of the present invention.

[0019] In the diagram: 1. Raw material ton container; 2. Solvent ton container; 3. Transfer mechanism; 4. Mixing mechanism; 5. Addition mechanism; 31. Transfer paint bucket; 32. Partition; 321. Compartment; 33. Bucket lid; 331. Baffle; 34. Feed pump; 35. Suction pipe; 351. Insert pipe; 352. Hose 1; 36. Feed pipe; 361. Hose 2; 37. Discharge pipe; 38. Paint pump; 39. Paint conveying pipe.

[0020] 41. Mixing tank; 42. Mixing assembly; 43. Discharge pipe; 44. Paint box; 51. Solvent tank; 52. Solvent pump; 53. Inlet pipe; 54. Suction pipe; 55. Outlet pipe; 56. Infusion pump; 57. Infusion pipe. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-5 A material transfer and conveying device includes a transfer mechanism 3, which can be connected to a raw material ton 1 for transferring and conveying raw materials. The transfer mechanism 3 can also temporarily store and add raw materials, and avoid paint quality problems caused by mixing raw materials from different batches in the raw material ton 1.

[0023] Please see Figure 3The transfer mechanism 3 includes a transfer paint bucket 31, a feed pump 34, and a paint delivery pump 38. The transfer paint bucket 31 is used for transferring paint, the feed pump 34 is used to transfer paint from the raw material ton 1 to the transfer paint bucket 31, and the paint delivery pump 38 is used to transfer paint from the transfer paint bucket 31, facilitating subsequent painting operations. A partition 32 is fixedly installed inside the transfer paint bucket 31, forming a compartment 321 between the inner wall of the transfer paint bucket 31 and the partition 32. The partition 32 has a "Y"-shaped structure, resulting in three compartments 321 that are not interconnected. This allows for separate transfer of paint from different raw material ton 1 containers, preventing raw material fluctuations caused by paint mixing and affecting painting quality. Furthermore, each compartment 321 is equipped with a level gauge for real-time monitoring of the paint level within the compartment 321. When the liquid level in compartment 321 falls below the safety line, the feed pump 34, controlled by the PLC, transports the paint from raw material container 1 into compartment 321 until the liquid level reaches the top limit of the level gauge. It should be noted that if, after liquid replenishment is triggered, the feed pump 34 continues to operate but the liquid level in compartment 321 remains below the top limit, an alarm will be triggered, reminding personnel to replace raw material container 1.

[0024] In addition, a lid 33 is rotatably installed on the top of the transfer paint bucket 31, and a baffle 331 is fixedly installed on the bottom of the lid 33. The baffle 331 has an obtuse angle structure, and the two sides of the baffle 331 and the partition 32 are aligned. The lid 33 and the partition 32 can close a compartment 321, thereby preventing the compartment 321 from contacting other compartments 321 and causing paint mixing and interference.

[0025] Please see Figure 5 The lid 33 can rotate, and a bracket is fixedly installed on the surface of the intermediate paint bucket 31. A motor is fixedly installed on the bracket, and the output shaft of the motor is fixedly connected to the lid 33, so that the lid 33 can be rotated by the motor, and rotated 60 degrees each time, so that the baffle 331 can close different compartments 321, which is suitable for the replacement of raw material ton bucket 1.

[0026] Based on this, the inlet of the feed pump 34 is connected to a suction pipe 35. The end of the suction pipe 35 away from the feed pump 34 is a flexible hose 352. A tube 351 is fixedly connected to the flexible hose 352. The tube 351 is inserted into the raw material container 1. The tube 351 can be quickly removed from and inserted into the raw material container 1 using the flexible hose 352, so as to quickly replace the raw material container 1 and facilitate sample change.

[0027] Furthermore, the outlet of the feed pump 34 is connected to a feed pipe 36. The end of the feed pipe 36 away from the feed pump 34 passes through the bucket lid 33, and the feed pipe 36 is fixedly connected to the bucket lid 33. This allows the feed pipe 36 to deliver paint into the compartment 321 through the bucket lid 33. Additionally, the feed pipe 36 near the bucket lid 33 is a flexible hose 361, which prevents interference when the bucket lid 33 rotates. The feed pipe 36 can be located either inside or outside the baffle 331. When the feed pipe 36 is inside the baffle 331, the baffle 331 blocks the addition of paint, ensuring that the addition of paint is not affected by other compartments 321 and does not interfere with other compartments 321. When the feed pipe 36 is located outside the baffle 331, it will block the compartment 321 where the old paint is stored each time the bucket lid 33 is rotated, preventing the old paint from affecting the compartment 321 and making it easier to clean the compartment 321 where the old paint is stored.

[0028] Furthermore, the inlet of the paint pump 38 is connected to three outlet pipes 37, each of which is connected to a compartment 321. A solenoid valve is installed on each outlet pipe 37 near the compartment 321, allowing the connection between the compartment 321 and the paint pump 38 to be controlled by opening and closing the solenoid valves. The outlet of the paint pump 38 is connected to a paint delivery pipe 39, which has multiple branches, each equipped with a solenoid valve. By controlling the solenoid valves and the paint pump 38, the paint can be discharged from the corresponding branch. A viscometer is installed on each branch of the paint delivery pipe 39 to monitor the viscosity of the paint passing through the branch, facilitating adjustments to the paint quantity and the uniformity of the mixture.

[0029] Please see Figure 1 The solvent ton 2 is connected to a solvent adding mechanism 5, which can transfer and transport solvent in a unified manner, thereby adjusting the concentration of paint and enabling centralized processing, reducing manual operation.

[0030] Please see Figure 3 The adding mechanism 5 includes a solvent tank 51, a solvent pump 52, and a dispensing pump 56. The solvent tank 51 is used for transferring and conveying solvent. The solvent pump 52 is used to transfer the solvent in the solvent ton 2 into the solvent tank 51. The dispensing pump 56 is used to convey the solvent in the solvent tank 51 and mix and dilute the paint.

[0031] Please see Figure 3The solvent pump 52 has an inlet pipe 53 connected to its inlet. One end of the inlet pipe 53 is inserted into the solvent container 2, and the end of the inlet pipe 53 near the solvent container 2 is a flexible hose, making it easier to replace the solvent container 2. The solvent pump 52 has a suction pipe 54 connected to its outlet. The suction pipe 54 is fixedly connected to the top of the solvent container 51. The solvent in the solvent container 2 is transported into the solvent container 51 through the suction pipe 54, the solvent pump 52, and the inlet pipe 53.

[0032] On the other hand, an outlet pipe 55 is fixedly installed at the inlet of the infusion pump 56, and the other end of the outlet pipe 55 is fixedly installed at the bottom of the solvent tank 51. An infusion pipe 57 is fixedly installed at the outlet of the infusion pump 56, and multiple branch pipes are provided on the infusion pipe 57, with solenoid valves installed on the branch pipes. The solvent in the solvent tank 51 can be drawn into the infusion pipe 57 through the infusion pump 56 and the infusion pipe 57, and the output of solvent through the branch pipes can be controlled by the solenoid valves.

[0033] Please see Figure 1 Both the transfer mechanism 3 and the addition mechanism 5 are connected to a mixing mechanism 4 for mixing and diluting the raw materials and solvents.

[0034] Please see Figure 2 The mixing mechanism 4 includes multiple mixing tanks 41, each corresponding to a production line of an enameling line. The mixing tanks 41 are connected to the paint conveying pipe 39 and the solvent delivery pipe 57, respectively, allowing them to receive and mix the raw paint conveyed by the paint conveying pipe 39 and the solvent conveyed by the solvent delivery pipe 57. Each mixing tank 41 contains a stirring assembly 42 consisting of a motor and a stirring paddle, used to thoroughly mix the solvent and raw paint. A viscometer is also installed inside the mixing tank 41 to monitor the concentration and uniformity after mixing.

[0035] Based on this, a discharge pipe 43 is fixedly installed near the bottom of the mixing tank 41. A solenoid valve is installed on the discharge pipe 43 to control whether paint is discharged from the mixing tank 41. The discharge pipe 43 is connected to a paint tank 44 for coating enameled wires. A level gauge is installed inside the paint tank 44 to monitor the amount of paint remaining.

[0036] It should be noted that pressure sensors and flow sensors are fixedly installed on the discharge pipe 37, the paint conveying pipe 39, the liquid outlet pipe 55, and the liquid delivery pipe 57 to monitor the conveyed paint in real time and to trigger alarms for blockages or abnormal flow.

[0037] The device also includes a main unit, a screen, and a PLC controller, which, together with various sensors, solenoid valves, and pumps, form a complete PLC control system. The sensors are used to collect signals and transmit them to the PLC controller, which then controls the various solenoid valves and pumps.

[0038] A material transfer and conveying method includes the following steps: S1. Data entry: Based on the production plan, the required paint concentration, paint quantity, and priority for each production line are input into the PLC controller via the host computer, so that the transfer of paint materials can be centrally controlled according to the production plan.

[0039] It is important to note that the priority is the relative importance of the production line in the entire production process. The higher the priority, the more important the production line is, and the more important it is to ensure the stable production of the production line.

[0040] S2. Conveying: Based on the data from S1, the transfer mechanism 3 and the adding mechanism 5 respectively fill the mixing tank 41 with raw paint and solvent for mixing. The mixed paint then enters the paint tank 44 for use. Specifically, the paint pump 38 and the liquid pump 56 work synchronously to transport the paint in the transfer paint tank 31 and the solvent in the solvent tank 51. The paint is then quantitatively transported to the same mixing tank 41 through the paint conveying pipe 39 and the liquid conveying pipe 57 for mixing. The mixed paint then enters the paint tank 44 for use.

[0041] S3, Replenishment: When the level gauge in paint tank 44 reaches the alarm line, the operation of S2 is repeated through PLC control. When faced with multiple replenishment requests, the order of replenishment is controlled by a dynamic priority calculation. A comprehensive urgency index Si is calculated for each replenishment request, Si=α*(Lit / Lis)+β*Wi+γ*(1 / Di). The replenishment order is adjusted according to the value of Si. Specifically, in the calculation of the comprehensive urgency index Si=α*(Lit / Lis)+β*Wi+γ*(1 / Di), Lit / Lis is the ratio of the current liquid level to the safe liquid level in the paint tank 44. The smaller the ratio, the more urgent the situation, reflecting the influence of the paint usage in the paint tank 44 on the urgency of replenishment.

[0042] Wi represents the production priority of the production line where the paint box 44 is located. It reflects the impact of the process importance or order priority of the production line on the urgency of material replenishment. The value range of Wi is 0-1, including 0.1 and 0.9. The larger the value of Wi, the higher the priority of the production line it represents.

[0043] Di represents the equivalent pipeline resistance from the intermediate paint bucket 31 to the paint box 44, indicating the transmission speed and energy consumption. The magnitude of Di is positively correlated with the pipeline path length and the number of bends, meaning that the Di value of the paint box 44 is larger the farther away from the intermediate paint bucket 31. Furthermore, as the distance between the paint box 44 and the intermediate paint bucket 31 increases, the Di values ​​are 0.8, 1.2, 1.8, and 2.6, respectively.

[0044] α, β, and γ are adjustable coefficients used to balance the influence of different factors. α, β, and γ all range from 0 to 1, and α + β + γ = 1. They are mainly used to control the intensity of the influence of the real-time liquid level status of the paint tank on scheduling decisions. Increasing the value of α reduces the values ​​of β and γ, allowing the system to respond more quickly to paint tanks with liquid levels close to the safety lower limit, emphasizing the speed of paint usage within paint tank 44. Increasing the value of β reduces the values ​​of α and γ, enhancing the influence of different production lines' Wi on scheduling decisions. The system will place greater emphasis on the priority of the production line corresponding to paint tank 44, prioritizing the repainting needs of high-priority production lines. Increasing the value of γ reduces the values ​​of α and β, allowing the system to place greater emphasis on paint tank 44, which has fewer paths.

[0045] By representing the urgency of refilling the paint box 44 with the sum of α*(Lit / Lis), β*Wi and γ*1 / Di, the refilling sequence can be adjusted and sorted according to the urgency of refilling the paint box 44, so that only one branch pipe is opened for refilling each time the device refills, the pipeline pressure changes are small, and the refilling is more orderly and stable.

[0046] This algorithm allows the solenoid valves on the paint delivery pipe 39 to be controlled separately according to the priority order of Si, reducing the number of pump start-ups and shutdowns and saving energy.

[0047] S4. Raw Material Replacement: When the liquid level in compartment 321 falls below the safety line, the feed pump 34, controlled by the PLC, transports the paint from raw material container 1 into compartment 321 until the liquid level reaches the top limit of the level gauge. It should be noted that if, after liquid replenishment is triggered, the feed pump 34 continues to operate but the liquid level in compartment 321 remains below the top limit, an alarm will be triggered, reminding personnel to replace raw material container 1.

[0048] The new raw material container 1 can be quickly switched through the insertion tube 351. When the insertion tube 351 is replaced, the container lid 33 rotates, allowing the new raw material to enter the new compartment 321, thus avoiding cross-contamination of raw materials.

[0049] S5, pipe washing. After the raw material is replaced in S4, the solenoid valve on the discharge pipe 37 is opened under PLC control, and the new paint and old paint are mixed synchronously and transported to the smallest paint tank 44 in Wi for mixing. The old paint in the conveying paint pipe 39 is completely discharged until the viscosity of the conveying paint pipe 39 is stable.

[0050] It is important to note that the cleaning process will only be triggered when the amount of old paint is less than half of the amount added each time. This is to avoid excessive old paint during the cleaning process, which could lead to prolonged cleaning time and excessive paint volume, thus affecting production line operations.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A material transfer and conveying device, characterized in that, It includes a transfer mechanism (3) and an addition mechanism (5). The transfer mechanism (3) can be connected to a raw material ton (1) for centralized supply of raw materials. The addition mechanism (5) can be connected to a solvent ton (2) for adding solvent. Both the transfer mechanism (3) and the addition mechanism (5) are connected to a mixing mechanism (4) for mixing and diluting the raw materials and solvents. The transfer mechanism (3) includes a transfer paint bucket (31), a partition (32) is fixedly installed inside the transfer paint bucket (31), a bucket lid (33) is rotatably installed on the top of the transfer paint bucket (31), a baffle (331) is fixedly installed at the bottom of the bucket lid (33), and a feed pipe (36) is fixedly installed through the bucket lid (33). The connection between the feed pipe (36) and the bucket lid (33) is a flexible hose (361).

2. The material transfer and conveying device according to claim 1, characterized in that, The transfer paint bucket (31) and the partition (32) form a compartment (321). A discharge pipe (37) is fixedly installed at the bottom of the transfer paint bucket (31). The discharge pipe (37) is connected to multiple compartments (321) respectively, and a solenoid valve is provided at each connection point. A paint pump (38) is fixedly connected to the other end of the discharge pipe (37). A paint conveying pipe (39) is connected to the outlet of the paint pump (38).

3. The material transfer and conveying device according to claim 1, characterized in that, The transfer mechanism (3) also includes a feed pump (34), the outlet of which is connected to the feed pipe (36), and the inlet of which is connected to a suction pipe (35). The end of the suction pipe (35) away from the feed pump (34) is a flexible hose (352), and a tube (351) is fixedly installed on the flexible hose (352).

4. A material transfer and conveying device according to claim 3, characterized in that, The mixing mechanism (4) includes multiple mixing tanks (41), each of which is connected to a paint conveying pipe (39). A solenoid valve is provided at the connection point between the paint conveying pipe (39) and the mixing tank (41). A mixing assembly (42) consisting of a motor and a mixing paddle is provided inside the mixing tank (41). A discharge pipe (43) is fixedly installed on the mixing tank (41). A solenoid valve is provided on the discharge pipe (43). The discharge pipe (43) is connected to a paint tank (44).

5. A material transfer and conveying device according to claim 1, characterized in that, The adding mechanism (5) includes a solvent tank (51), a liquid extraction pipe (54) is fixedly installed at the top of the solvent tank (51), a solvent pump (52) is fixedly connected to the liquid extraction pipe (54), and an inlet pipe (53) is fixedly installed at the outlet of the solvent pump (52).

6. A material transfer and conveying device according to claim 4, characterized in that, A liquid outlet pipe (55) is fixedly installed at the bottom of the solvent tank (51). A liquid pump (56) is fixedly connected to the liquid outlet pipe (55). A liquid pump (57) is fixedly connected to the outlet of the liquid pump (56). The liquid pump (57) is connected to the stirring tank (41). A solenoid valve is provided at the connection between the liquid pump (57) and the stirring tank (41).

7. A material transfer and conveying device according to claim 6, characterized in that, The intermediate paint tank (31), solvent tank (51) and paint box (44) are all equipped with level gauges. The stirring tank (41) is equipped with a viscometer. The discharge pipe (37), conveying paint pipe (39), liquid outlet pipe (55) and liquid delivery pipe (57) are all fixedly installed with pressure sensors and flow sensors. The conveying paint pipe (39) is equipped with a viscometer at the position of the solenoid valve.

8. A material transfer and conveying method, used in the material transfer and conveying device according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Data entry: Based on the production plan, the required paint concentration, paint quantity, and priority for each production line are entered into the host computer. S2, conveying: according to the data of S1, the transfer mechanism (3) and the addition mechanism (5) respectively fill the mixing tank (41) with the original paint and solvent for mixing and stirring. The mixed paint enters the paint box (44). S3, replenishing sample: When the level gauge in the paint tank (44) reaches the alarm line, the operation of S2 is repeated to replenish the paint tank (44) through PLC feedback control. The replenishment order is controlled according to the comprehensive urgency index Si, where Si = α*(Lit / Lis) + β*Wi + γ*(1 / Di). S4. Raw material replacement: The new raw material ton (1) is quickly switched through the insertion tube (351). When the insertion tube (351) is replaced, the lid (33) rotates so that the new raw material enters the new compartment (321) to avoid cross-contamination of raw materials. S5, pipe cleaning. After the raw material is replaced in S4, the mixed paint is directly transported to the smallest paint tank (44) in Wi by PLC control for mixing, and the old paint in the pipe is completely discharged.

9. A material transfer and conveying method according to claim 8, characterized in that, In S3, the comprehensive urgency index Si=α*(Lit / Lis)+β*Wi+γ*(1 / Di) is the ratio of the current liquid level to the safe liquid level of the paint tank (44). The smaller the ratio, the more urgent the situation. Wi is the production priority of the production line where the paint tank (44) is located. Di is the equivalent pipeline resistance from the intermediate paint bucket (31) to the paint tank (44), indicating the speed and energy consumption of the conveying. α, β, and γ are adjustable coefficients used to balance the influence of different factors.

10. A material transfer and conveying method according to claim 9, characterized in that, The range of Wi is 0-1, the magnitude of Di is positively correlated with the path length of the pipe and the number of bends, and the ranges of α, β, and γ are all 0-1, and α+β+γ=1.

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