A welding production line master control system

Abstract

The present invention relates to a general control system for a welding production line, which belongs to the field of welding production technology and solves the problem that the existing welding production line relies on manual operation and leads to low production efficiency. The general control system of the present invention includes: a production line management system and an edge control system, the edge control system includes a main board and multiple slave boards, wherein the production line management system is connected to the main board, and the production equipment of each workstation on the welding production line is respectively connected to a slave board, and the slave boards are all connected to the main board; the production line management system includes: a scheduling module, which is used to establish a task schedule for production tasks and generate work step instructions and control flows for each workstation; the scheduling module sends work step instructions and control flows to the main board, and the main board parses the information sent by the scheduling module and sends it to the corresponding production equipment through the slave board, so that each production equipment of the welding production line performs production tasks according to the task schedule. The present invention improves the automation and intelligence level of the welding production line and enhances production efficiency and flexibility.

Description

Technical Field

[0001] The invention relates to the technical field of welding production, and in particular to a welding production line master control system. Background Art

[0002] Welding consists of a series of processes. Traditional welding production lines mainly rely on manual operation, which not only requires operators to have superb skills and rich experience, but also involves cumbersome assembly and transfer processes for large-scale product welding operations. These factors together lead to low welding efficiency and poor product quality consistency.

[0003] At the same time, traditional welding production lines need to reconfigure background parameters when encountering multiple production tasks. If there are many devices involved, parameter changes will seriously affect the operating efficiency of the entire production line, and thus affect the production progress of the product.

[0004] With the development of automation and intelligent technology, there is an urgent need for an automated and intelligent welding production line to reduce dependence on manual operation, improve production efficiency, and enhance the flexibility and adaptability of the production line. Summary of the invention

[0005] In view of the above analysis, an embodiment of the present invention aims to provide a welding production line master control system to solve the problem of low production efficiency caused by reliance on manual operation in existing welding production lines.

[0006] The present invention provides a master control system for a welding production line, the master control system comprising: a production line management system and an edge control system, the edge control system comprising a main board and a plurality of slave boards,

[0007] The production line management system is connected to the main board, and the production equipment of each station on the welding production line is connected to a slave board respectively, and the slave boards are connected to the main board;

[0008] The production line management system includes: a scheduling module, which is used to establish a task schedule for production tasks and generate work step instructions and control flows for each workstation according to the task schedule, wherein the control flow includes the execution order of the work step instructions of the production task; the scheduling module sends the work step instructions and the control flow to the main board, and the main board parses the information sent by the scheduling module and sends it to the corresponding production equipment through the slave board, so that each production equipment of the welding production line executes the production task according to the task schedule.

[0009] Based on further improvements to the above-mentioned master control system, the slave board monitors the equipment status of the corresponding production equipment, and the slave board generates equipment status information according to the status of the production equipment and sends the equipment status information to the production line management system through the main board.

[0010] Based on the further improvement of the above master control system, the production line management system further includes: an exception handling module,

[0011] When the exception handling module detects that one or more production equipment in the task schedule is in an abnormal state, the exception handling module sends a stop instruction to all production equipment in the task schedule where the production equipment in the abnormal state is located through the slave board to stop executing production tasks until the production equipment in the abnormal state returns to a normal state.

[0012] Based on the further improvement of the above-mentioned master control system, the scheduling module can establish a task schedule for one or more production tasks and generate a control flow according to the task schedule of each production task.

[0013] Based on the further improvement of the above master control system, the production line management system also includes: a task management module,

[0014] When the welding production line executes multiple production tasks at the same time, for the production equipment involved in the multiple production tasks, the task management module controls the production equipment to execute the multiple production tasks in sequence according to a preset order, and when the production equipment executes the current production task, the task management module controls other production tasks to be suspended.

[0015] Based on the further improvement of the above master control system, the scheduling module uses an improved genetic algorithm to establish the task scheduling of production tasks, including the following steps:

[0016] Step 1, initialization parameters;

[0017] Step 2: randomly generate an initial population, where each individual in the population represents a possible task scheduling solution;

[0018] Step 3, setting the fitness function according to the task indicators of the production task;

[0019] Step 4, calculating the fitness value for each individual in the population according to the fitness function;

[0020] Step 5: sort the fitness values ​​of each individual and select the individuals with the highest fitness to enter the next generation population;

[0021] Step 6, perform crossover and mutation operations on the selected individuals in turn to obtain new offspring individuals;

[0022] Step 7, merging the offspring individuals with the unselected individuals in the previous generation population to form a new population;

[0023] Step 8, repeat the operations from step 4 to step 7 until the maximum number of iterations is reached, and record the individual with the highest fitness in the current population during each iteration;

[0024] Step 9: Output the individual with the highest fitness in all iterations as the task schedule for the production task.

[0025] Based on the further improvement of the above-mentioned master control system, the master control system further includes: a warehouse management system and a logistics scheduling system, the production line management system is connected to the warehouse management system, and the warehouse management system is connected to the logistics scheduling system.

[0026] The production line management system sends a material outbound instruction to the warehouse management system according to the received production tasks. The warehouse management system retrieves materials according to the material outbound instruction and sends a material distribution instruction to the logistics scheduling system. The material scheduling system transports the materials to the welding production line according to the material distribution instruction.

[0027] Based on the further improvement of the above-mentioned master control system, after receiving the production task, the production line management system obtains whether the materials of the production task are sufficient through the warehouse management system. If the materials are sufficient, the production line management system sends the control flow of the task scheduling of the production task; if the materials are insufficient, the production line management system sends the material increase instruction of the material to the warehouse management system to instruct the warehouse management system to increase the material.

[0028] Based on the further improvement of the above master control system, the master control system further includes: an operating environment system, the operating environment system includes: an industrial switch and a wireless access device,

[0029] The industrial switch is connected to the industrial network, and the wireless access device is connected to the industrial network through the industrial switch.

[0030] The production line management system, the edge control system and the production equipment at each workstation on the welding production line are connected to the industrial network through the industrial switch or the wireless access device.

[0031] Based on the further improvement of the above-mentioned master control system, the production equipment of the welding production line includes: a laser cleaning unit, an automatic assembly unit, a pre-adjustment and positioning welding unit and an electron beam welding unit.

[0032] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0033] 1. The welding production line master control system of the present invention realizes the effective coordination between the production line management system and the edge control system. The scheduling module of the production line management system accurately establishes and generates the control flow of the production tasks, and effectively connects the isolated production units in series according to a specific welding production process, ensuring that the production equipment at each workstation on the welding production line can execute the production tasks in an orderly manner according to the established task scheduling and work step instructions. It not only improves the automation and intelligence level of the production line, but also enhances the production efficiency and flexibility, while reducing human errors and operational complexity, and can ensure the efficient and stable operation of the welding production line.

[0034] 2. In the present invention, by monitoring the equipment status of the production equipment through the slave board of the edge control system, abnormal situations can be quickly identified and fault points can be located. When the abnormal status of the production equipment is detected, the exception handling module of the production line management system can send a stop command to all production equipment in time. The present invention avoids material waste due to equipment abnormalities through an effective exception handling mechanism, ensures the safety and stability of the production line, and improves the automation and flexibility of production management.

[0035] 3. In the present invention, through effective scheduling mechanism and task management, the multi-task processing capacity of the welding production line is improved, resource allocation is optimized, production efficiency is improved, and production flexibility and stability are also enhanced. Specifically, the scheduling module of the production line management system can process one or more production tasks at the same time and generate corresponding control flows, so that the welding production line can flexibly respond to multi-task production needs without reconfiguring parameters, thereby improving production efficiency. When executing multiple production tasks, the task management module can control the equipment involved in multiple production tasks to execute multiple production tasks in sequence according to a preset order, and suspend other production tasks when the equipment executes the current task, thereby optimizing the configuration of production resources, reducing production interruptions and confusion caused by the parallel execution of multiple tasks, and ensuring the continuity and stability of production.

[0036] 4. In the present invention, by integrating the production line management system, warehouse management system and logistics scheduling system, efficient coordination of production, materials and logistics is achieved, and the production and logistics efficiency is improved.

[0037] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0039] Figure 1 A schematic structural diagram of a welding production line master control system according to an embodiment of the present invention;

[0040] Figure 2 A welding production flow chart of an embodiment of the present invention;

[0041] Figure 3 This is a system architecture diagram of a production line management system, a warehouse management system, and a logistics scheduling system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0043] The embodiment of the present invention provides a welding production line master control system, such as Figure 1 The master control system includes: a production line management system and an edge control system, wherein the edge control system includes a main board and multiple slave boards.

[0044] The production line management system is connected to the main board, and the production equipment of each station on the welding production line is connected to a slave board respectively, and the slave boards are connected to the main board;

[0045] The production line management system includes: a scheduling module, which is used to establish a task schedule for production tasks and generate work step instructions and control flows for each workstation according to the task schedule, wherein the control flow includes the execution order of the work step instructions of the production task; the scheduling module sends the work step instructions and the control flow to the main board, and the main board parses the information sent by the scheduling module and sends it to the corresponding production equipment through the slave board, so that each production equipment of the welding production line executes the production task according to the task schedule.

[0046] Among them, the edge control system adopts a master-slave architecture, including a main board and multiple slave boards. The slave boards are set at each workstation. During implementation, the slave boards are connected to the corresponding production equipment through the interface layer. The main board and the slave boards are cascaded through 10G optical fiber, with fast transmission rate, good security and high reliability.

[0047] Compared with the prior art, the welding production line master control system of the embodiment of the present invention realizes the effective coordination between the production line management system and the edge control system, accurately establishes and generates the control flow of production tasks through the scheduling module of the production line management system, and effectively connects the isolated production units in series according to a specific welding production process, ensuring that the production equipment at each workstation on the welding production line can execute the production tasks in an orderly manner according to the established task schedule and work step instructions, which not only improves the automation and intelligence level of the production line, but also enhances production efficiency and flexibility, while reducing human errors and operational complexity, and can ensure the efficient and stable operation of the welding production line.

[0048] It should be noted that control flow refers to the order and conditions of execution of instructions or operations in a program or system. It describes the logical path during program execution, including control structures such as sequential execution, conditional branches, and loops.

[0049] Specifically, the slave board monitors the status of the corresponding production equipment, generates equipment status information according to the status of the production equipment, and sends the equipment status information to the production line management system through the main board.

[0050] Specifically, the status of the production equipment includes production status, network status, and equipment status. Among them, the production status includes idle status and occupied status. When the production equipment performs the production task normally, it is in the occupied state; the network status includes normal connection status and disconnected connection status; the equipment status includes normal status and fault status. When the network status of the production equipment is disconnected, or the equipment status is faulty, the production equipment is in an abnormal state. When a single-station production equipment is abnormal, the slave board of the edge control system can upload the abnormal equipment status information in time and record the fault data to facilitate technical personnel to track problems.

[0051] During implementation, the production line management system establishes task scheduling and then issues control flows and work step instructions. The main board of the edge control system parses them and then distributes them in order to the production equipment at each workstation from the board. At the same time, it obtains production process information, including work reporting and equipment collection data, such as production status, equipment status and other data.

[0052] Specifically, the production line management system also includes a status display module, and the status display module displays the status information of each of the production equipment.

[0053] The status information of the production equipment includes production status information, network status information, equipment status information and the like.

[0054] During implementation, icons of various production equipment are set on the status display interface, and the network status of the production equipment at each workstation is displayed through icons, such as a green icon - normal connection, and a red icon - disconnected connection.

[0055] Specifically, the production line management system also includes: an exception handling module. When the exception handling module detects that one or more production equipment in the task schedule is in an abnormal state, the exception handling module sends a stop instruction to all production equipment in the task schedule where the production equipment in the abnormal state is located through the slave board to stop executing the production task until the production equipment in the abnormal state returns to normal.

[0056] In the embodiment of the present invention, the equipment status of the production equipment is monitored by the slave board of the edge control system, so that abnormal situations can be quickly identified and the fault points can be located. When the abnormal status of the production equipment is monitored, the exception handling module of the production line management system can send a stop command to all production equipment in time. The present invention avoids material waste due to equipment abnormalities through an effective exception handling mechanism, ensures the safety and stability of the production line, and improves the automation and flexibility of production management.

[0057] Specifically, the scheduling module can establish a task schedule for one or more production tasks and generate a control flow according to the task schedule of each production task.

[0058] The welding production line of the embodiment of the present invention can execute multiple production tasks at the same time. The scheduling module can schedule each production task and generate a corresponding control flow, thereby realizing the configuration of production resources and facilitating improving production efficiency.

[0059] Specifically, the production line management system includes a task management module. When the welding production line executes multiple production tasks at the same time, for the production equipment involved in the multiple production tasks, the task management module controls the production equipment to execute the multiple production tasks in sequence according to a preset order, and when the production equipment executes the current production task, the task management module controls other production tasks to be suspended.

[0060] In the embodiment of the present invention, through an effective scheduling mechanism and task management, the multi-task processing capacity of the welding production line is improved, resource allocation is optimized, production efficiency is improved, and the flexibility and stability of production are also enhanced.

[0061] Specifically, the scheduling module of the production line management system can handle one or more production tasks at the same time and generate corresponding control flows, so that the welding production line can flexibly respond to multi-task production needs without reconfiguring parameters, thereby improving production efficiency. When executing multiple production tasks, the task management module can control the equipment involved in multiple production tasks to execute multiple production tasks in sequence according to a preset order, and suspend other production tasks when the equipment is executing the current task, thereby optimizing the configuration of production resources, reducing production interruptions and confusion caused by the parallel execution of multiple tasks, and ensuring the continuity and stability of production.

[0062] In a specific embodiment, the scheduling module uses an improved genetic algorithm to establish a task schedule for production tasks, including the following steps:

[0063] Step 1, initialize parameters; set population size, maximum number of iterations, crossover probability, mutation probability, number of production tasks, and number of devices;

[0064] Step 2: randomly generate an initial population, where each individual in the population represents a possible task scheduling scheme; the sequence composed of the task number and the production number is used as the individual code;

[0065] Step 3, set the fitness function according to the task indicators of the production task; the task indicators include the completion time of the production task, equipment utilization rate, etc.; during implementation, the inverse of the maximum completion time can be used as the fitness value, and the higher the fitness value, the better the scheduling plan.

[0066] Step 4, calculating the fitness value for each individual in the population according to the fitness function;

[0067] Step 5: sort the fitness values ​​of each individual and select the individuals with the highest fitness to enter the next generation population;

[0068] Step 6, perform crossover and mutation operations on the selected individuals in turn to obtain new offspring individuals;

[0069] Step 7, merging the offspring individuals with the unselected individuals in the previous generation population to form a new population;

[0070] Step 8, repeat the operations from step 4 to step 7 until the maximum number of iterations is reached, and record the individual with the highest fitness in the current population during each iteration;

[0071] Step 9: Output the individual with the highest fitness in all iterations as the task schedule for the production task.

[0072] In the task scheduling algorithm in the embodiment of the present invention, through the crossover and mutation operations of the genetic algorithm, a global search can be performed in the entire solution space to avoid falling into the local optimal solution, thereby obtaining the optimal task scheduling result. The task scheduling algorithm in the embodiment of the present invention can flexibly adjust parameters according to actual production tasks and equipment conditions, adapt to welding production task scheduling problems of different scales and complexities, and in the face of emergencies that may occur in the production process, such as equipment failures, task changes, etc., the algorithm can quickly adjust the scheduling plan and has good robustness.

[0073] In one embodiment, the master control system further includes a warehouse management system and a logistics scheduling system, the production line management system is connected to the warehouse management system, and the warehouse management system is connected to the logistics scheduling system. The production line management system sends a material outbound instruction to the warehouse management system according to the received production task, the warehouse management system retrieves the material according to the material outbound instruction and sends a material delivery instruction to the logistics scheduling system, and the material scheduling system delivers the material to the welding production line according to the material delivery instruction.

[0074] In the embodiment of the present invention, by integrating the production line management system, the warehouse management system and the logistics scheduling system, efficient coordination of production, materials and logistics is achieved, and the production and logistics efficiency is improved.

[0075] During implementation, information is transmitted between the production line management system, warehouse management system and logistics scheduling system through the HTTP protocol.

[0076] Specifically, after receiving the production task, the production line management system obtains whether the materials of the production task are sufficient through the warehouse management system. If the materials are sufficient, the production line management system sends the control flow of the task scheduling of the production task; if the materials are insufficient, the production line management system sends the material increase instruction of the material to the warehouse management system to instruct the warehouse management system to increase the material.

[0077] Specifically, the master control system also includes an operating environment system, which includes: an industrial switch and a wireless access device (AP). The industrial switch is connected to the industrial network, and the wireless access device is connected to the industrial network through the industrial switch. The production line management system, the edge control system and the production equipment at each workstation on the welding production line are connected to the industrial network through the industrial switch or the wireless access device.

[0078] In addition, the operating environment system also includes: a server and a unit terminal. The server is used to store and manage data. During implementation, an application server and a database server can be set up separately.

[0079] Example

[0080] In this embodiment, the welding production line master control system includes a production line management system, an edge control system, a warehouse management system, a logistics scheduling system and an operation loop system.

[0081] The production equipment of the welding production line includes: laser cleaning unit, automatic assembly unit, pre-adjustment and positioning welding unit and electron beam welding unit. In other words, the welding production process includes laser cleaning, automatic assembly, pre-adjustment and positioning welding, and electron beam welding. In addition, it should be noted that the production equipment of each station is composed of corresponding tooling, robots, sensors and other mechanisms according to the tasks it performs.

[0082] In the factory, the laser cleaning unit, automatic assembly unit, pre-adjustment and positioning welding unit are arranged in a straight line, and the front side of the laser cleaning unit is also set up with a pre-line preparation area. The electron beam welding unit occupies a large space and is set up separately in another area of ​​the factory.

[0083] Specifically, the welding production line includes a plurality of automatic assembly units, for example, a front cabin automatic assembly unit, two rear cabin assembly units, and a whole cabin automatic assembly unit.

[0084] During implementation, the system will automatically transfer the work steps according to the task scheduling. For example, if the current assembly station is occupied, the workpiece that has been cleaned at the cleaning station will not be transferred until the assembly station is assembled. After that, the AGV transports the assembled products to the pre-adjustment and positioning welding station. At this time, the assembly station is released, and the production line management system will automatically transfer the instructions to the AGV. The AGV then transports the cleaned workpiece to the assembly station to complete the automatic assembly.

[0085] The edge control system adopts a master-slave architecture, consisting of 1 EMCC60 main board and 7 EECC30 slave boards. The slave boards are distributed in the laser cleaning station, the front cabin assembly station, the two rear cabin assembly stations, the whole cabin assembly station, the pre-adjustment positioning welding station, and the electron beam welding station. The main board and the slave board are cascaded through 10G optical fiber, with fast transmission rate, good security and high reliability. The slave board collects the status data of robots, tooling and other equipment through the TCP / IP protocol. Specifically, the tooling, swing arm and AGV docking station use the ModBus protocol based on the TCP / IP protocol; the slave boards of the robot, truss and electron beam welding unit use Siemens PLC, which collects data based on the S7 protocol of TCP / IP.

[0086] The main board of the edge control system is connected to the production line management system upward, and exchanges data through KAFKA. It is connected to the equipment network downward through the slave board and interface layer to exchange data with on-site equipment such as cleaning equipment, tooling, robots, welding equipment, servo motors, and various sensors. Figure 1 shown.

[0087] The production line management system is the brain of the entire welding production line. It stores some basic data and has task scheduling module, task management module, exception handling module, etc., which can realize comprehensive management and control of the planning, process and resources of the entire production line.

[0088] The production line management system, warehouse management system, and logistics scheduling system transmit data through the HTTP protocol. The system architecture is as follows: Figure 3 As shown. The production line management system is connected to the warehouse management system. By issuing material outbound instructions to the warehouse management system, the warehouse management system determines the material status. If the material is sufficient, the warehouse management system issues material distribution instructions to the logistics scheduling system. During implementation, after the production line management system receives the planned production task, before scheduling the task, you can click the "View Material Inventory" button to retrieve the inventory data in the warehouse management system through the interface and directly view the current material inventory information.

[0089] The operating environment refers to the networking connection of the on-site equipment and systems according to certain network relationships, and the on-site network deployment. The hardware equipment of the operating environment system mainly includes 2 servers (1 application server and 1 database server), 6 industrial switches, 4 APs, and 5 unit terminals.

[0090] An industrial switch is installed at each workstation of the welding production line, and multiple switches are evenly arranged in the factory. Each wireless access point is connected to the nearest industrial switch via a network cable to access the industrial network.

[0091] Specifically, the server adopts the Inspur brand and is installed with the centos system; the switch adopts the Mosa brand, and one industrial switch is set at the workstation of the specific laser cleaning unit, automatic assembly unit, pre-adjustment and positioning welding unit, and electron beam welding unit. There are 4 APs placed in the whole factory, one in each channel. The AP adopts the Multi-Bet brand 5.8GHz 300M industrial-grade antenna integrated wireless base station, which can cover 50 meters and converge each AP to the nearest switch through the network cable. The production line management system, warehouse management system, logistics scheduling system, laser cleaning unit, pre-adjustment and positioning welding unit are each distributed with a unit terminal to deploy system software and unit functions.

[0092] The welding production line master control system of this embodiment has been successfully applied to weld multiple sets of products, realizing the automation of the entire process from delivery, pre-welding cleaning, laser cleaning, automatic assembly, tack welding detection, electron beam welding to automatic disassembly, greatly reducing labor costs and ensuring product quality. The production efficiency has been increased by 50%, and the one-time qualified rate of welding has reached more than 90%.

[0093] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0094] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A master control system for a welding production line, characterized in that: The master control system includes: a production line management system and an edge control system, wherein the edge control system includes a main board and multiple slave boards. The production line management system is connected to the main board, and the production equipment of each station on the welding production line is connected to a slave board respectively, and the slave boards are connected to the main board; The production line management system includes: a scheduling module, which is used to establish a task schedule for production tasks and generate work step instructions and control flows for each workstation according to the task schedule, wherein the control flow includes the execution order of the work step instructions of the production task; the scheduling module sends the work step instructions and the control flow to the main board, and the main board parses the information sent by the scheduling module and sends it to the corresponding production equipment through the slave board, so that each production equipment of the welding production line executes the production task according to the task schedule.

2. The master control system according to claim 1, characterized in that: The slave board monitors the status of the corresponding production equipment, generates equipment status information according to the status of the production equipment, and sends the equipment status information to the production line management system through the main board.

3. The master control system according to claim 2, characterized in that: The production line management system also includes: an exception handling module, When the exception handling module detects that one or more production equipment in the task schedule is in an abnormal state, the exception handling module sends a stop instruction to all production equipment in the task schedule where the production equipment in the abnormal state is located through the slave board to stop executing production tasks until the production equipment in the abnormal state returns to a normal state.

4. The master control system according to claim 2, characterized in that: The scheduling module can establish a task schedule for one or more production tasks and generate a control flow according to the task schedule for each production task.

5. The master control system according to claim 4, characterized in that: The production line management system also includes: a task management module, When the welding production line executes multiple production tasks at the same time, for the production equipment involved in the multiple production tasks, the task management module controls the production equipment to execute the multiple production tasks in sequence according to a preset order, and when the production equipment executes the current production task, the task management module controls other production tasks to be suspended.

6. The master control system according to claim 1 or 2, characterized in that: The scheduling module uses an improved genetic algorithm to establish a task schedule for production tasks, including the following steps: Step 1, initialization parameters; Step 2: randomly generate an initial population, where each individual in the population represents a possible task scheduling solution; Step 3, setting the fitness function according to the task indicators of the production task; Step 4, calculating the fitness value for each individual in the population according to the fitness function; Step 5: sort the fitness values ​​of each individual and select the individuals with the highest fitness to enter the next generation population; Step 6, perform crossover and mutation operations on the selected individuals in turn to obtain new offspring individuals; Step 7, merging the offspring individuals with the unselected individuals in the previous generation population to form a new population; Step 8, repeat the operations from step 4 to step 7 until the maximum number of iterations is reached, and record the individual with the highest fitness in the current population during each iteration; Step 9: Output the individual with the highest fitness in all iterations as the task schedule for the production task.

7. The master control system according to claim 1 or 2, characterized in that: The master control system also includes: a warehouse management system and a logistics scheduling system. The production line management system is connected to the warehouse management system, and the warehouse management system is connected to the logistics scheduling system. The production line management system sends a material outbound instruction to the warehouse management system according to the received production tasks. The warehouse management system retrieves materials according to the material outbound instruction and sends a material distribution instruction to the logistics scheduling system. The material scheduling system transports the materials to the welding production line according to the material distribution instruction.

8. The master control system according to claim 7, characterized in that: After receiving the production task, the production line management system obtains information from the warehouse management system whether the materials for the production task are sufficient. If the materials are sufficient, the production line management system sends a control flow for the task scheduling of the production task; if the materials are insufficient, the production line management system sends a material increase instruction to the warehouse management system to instruct the warehouse management system to increase the materials.

9. The master control system according to claim 1 or 2, characterized in that: The master control system also includes: an operating environment system, which includes: an industrial switch and a wireless access device. The industrial switch is connected to the industrial network, and the wireless access device is connected to the industrial network through the industrial switch. The production line management system, the edge control system and the production equipment at each workstation on the welding production line are connected to the industrial network through the industrial switch or the wireless access device.

10. The master control system according to claim 1 or 2, characterized in that: The production equipment of the welding production line includes: a laser cleaning unit, an automatic assembly unit, a pre-adjustment and positioning welding unit and an electron beam welding unit.

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