A fixed point welding machine production intelligent management monitoring system and method

Abstract

The application relates to a fixed spot welding machine production intelligent management monitoring system and method, which is composed of a computer control system, a PLC control system, a fixed spot welding machine system, a network switch, an Ethernet communication line, a CCLINK communication line, a fixed spot welding machine control box, a PLC signal acquisition control module and a working state indicating lamp; the computer control system exchanges data with the PLC control system by collecting welding data of the fixed spot welding machine control box during working, displays and saves production related information; the PLC control system realizes control and collection of the production welding times in the production process of the fixed spot welding machine control box and control of the running state of the fixed spot welding machine system through the PLC signal acquisition control module. The application realizes fixed spot welding machine welding quality monitoring and management, production counting, alarm prompting of boxing counting and grinding counting, production record tracing and inquiry of products, avoids occurrence of missed welding, and improves production efficiency and product quality.

Description

Technical Field

[0001] This invention belongs to the field of quality management technology for fixed spot welding machine production, specifically relating to an intelligent management and monitoring system and method for fixed spot welding machine production, which can centrally manage and monitor multiple fixed spot welding machines. Background Technology

[0002] Typically, fixed spot welding machines operate on the principle of double-sided, double-point overcurrent resistance welding. During operation, two electrodes press the workpiece, causing the two layers of metal to form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode to the other electrode, it forms an instantaneous thermal fusion at the two contact resistance points. The welding current also flows instantaneously from the other electrode along the two workpieces to this electrode to form a circuit.

[0003] Fixed spot welding machines are widely used due to their high processing efficiency, low production cost, ease of operation, and mature technology. However, because welding data during the production process cannot be displayed intuitively, and the welding process is subject to many external interference factors, the welding quality will inevitably have some deviation. Therefore, in actual production, it is impossible to guarantee that all products are qualified. Furthermore, fixed spot welding machines are frequently used for welding nuts and bolts, which are too small to be counted precisely. Also, a single workpiece may require welding one or more nuts and bolts, posing a risk of missed welds. If a workpiece with a missed weld reaches the next process or the customer's site, it can lead to serious issues such as rework repair costs or scrap claims.

[0004] Currently, most companies use a marker to mark lines on the workpiece after welding to check for missed welds. However, manual marking is unpredictable and missed welds can still occur. Furthermore, manual marking increases the workload for workers and reduces production efficiency.

[0005] Some existing fixed spot welding machines have a counter function, but this counter only records the number of welds; it does not specifically record the number of parts and nuts or bolts welded on a particular product, nor does it compare and analyze the number of parts and nuts or bolts after the production task is completed. Therefore, in actual production, missed welds are still very likely to occur. At the same time, in addition to missed welds, insufficient weld strength can also lead to quality problems. For resistance welding, electrode grinding is a key factor affecting weld strength. If the electrode is not ground in a timely manner according to process standards, the resistance will increase and the current will decrease during welding, resulting in insufficient weld strength and causing weld breakage. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent management and monitoring system for fixed spot welding machine production, and also to provide an intelligent management and monitoring method for fixed spot welding machine production, in order to solve the problems of existing fixed spot welding machines that cannot prompt operators to perform grinding and packing according to different products and process requirements, cannot verify the equivalence between production quantity and nut / bolt usage quantity according to different products and then prompt operators to check for missed welds, and cannot monitor and manage the quality status of each weld.

[0007] This invention is achieved through the following technical solution:

[0008] A smart management and monitoring system for fixed spot welding machine production mainly consists of a computer control system 1, a PLC control system 2, multiple fixed spot welding machines, a PLC signal acquisition and control module 8, and multiple working status indicator lights 9 installed on the fixed spot welding machines.

[0009] Each fixed spot welding machine consists of a fixed spot welding machine system 3 and a fixed spot welding machine control box 7; the fixed spot welding machine control box 7 is connected to the PLC signal acquisition and control module 8, the working status indicator light 9 and the fixed spot welding machine system 3 respectively; the PLC signal acquisition and control module 8 is connected to the spot welding machine control box 7 and the working status indicator light 9 respectively.

[0010] Each fixed spot welding machine system 3 is connected to the PLC control system 2 and the computer control system 1 via an Ethernet communication line 5 to form an Ethernet signal information exchange network; the PLC control system 2 is connected to each PLC signal acquisition and control module 8 via a CCLINK communication line 6 to form a CCLINK information exchange network; the computer control system 1, the PLC control system 2, and the fixed welding machine control box 7 are connected together via an Ethernet communication line 5 and a network switch 4 to form a local area network.

[0011] The computer control system 1 stores the production tasks of each fixed spot welding machine system 3 and transmits these tasks to the PLC control system 2 via data exchange. Welding data generated during the production process of the fixed spot welding machine system 3 can be uploaded to both the computer control system 1 and the PLC control system 2 via the fixed spot welding machine control box 7, allowing management personnel to centrally manage and monitor the production status and product quality of the spot welding equipment. The PLC control system 2 can also control the production of the fixed spot welding machine system 3 based on the production information collected by the fixed spot welding machine control box 7 from the PLC signal acquisition and control module 8. The computer control system 1 can determine whether the welding current collected by the fixed spot welding machine control box 7 is qualified and transmits the welding failure information to the PLC control system 2, which then controls the equipment to stop working and issues an alarm.

[0012] Furthermore, the fixed spot welding machine system 3 and the PLC signal acquisition and control module 8 are respectively screwed to the fixed welding machine control box 7.

[0013] Furthermore, the working status indicator light 9 is installed at the opening on the side of the fixed spot welding machine control box 7.

[0014] A method for intelligent management and monitoring of fixed spot welding machine production includes the following steps:

[0015] A. Manually fill in the production plan quantity, product packing quantity, electrode repair times and other production tasks for each fixed spot welding machine system 3 into the computer control system 1 that has been programmed.

[0016] B. After the production task is filled in, the computer control system 1, which has been programmed, will start the data transmission function and send the production task of each fixed spot welding machine system 3 to the PLC control system 2 through the pre-established Ethernet communication line 5.

[0017] C. When the PLC control system 2 receives the production task sent by the computer control system 1, it will send the production information to the PLC signal acquisition and control module 8 through the pre-established CCLINK communication line 6, and then the PLC signal acquisition and control module 8 will perform production control on each fixed spot welding machine system 3.

[0018] D. When each fixed spot welding machine system 3 performs each welding operation, the computer control system 1 will collect welding data such as welding current and welding time during each welding operation through the established Ethernet communication line 5, and then save and display it in the computer control system 1. In this way, after the computer control system 1 collects the welding data, the specific welding data information can be directly observed by the operator. The welding information can be used to monitor the welding quality status and query the history. The computer control system 1 can determine whether the collected welding current is qualified and transmit the welding non-qualified information to the PLC control system 2. The PLC control system 2 will then control the equipment to stop working and issue an alarm.

[0019] E. Simultaneously, during each welding operation of each fixed spot welding machine system 3, the PLC control system 2 will acquire the welding completion signal of the fixed welding machine control box 7 through the established CCLINK communication line 6 and count it once. When the welding count of each fixed spot welding machine system 3 reaches the electrode repair setting value in the PLC control system 2, the PLC control system 2 will illuminate the A electrode repair indicator light in the working status indicator light 9 on the corresponding fixed spot welding machine through the PLC signal acquisition control module 8 and stop the equipment from working. After the electrode is repaired, the D reset button must be pressed manually before work can continue.

[0020] F. When the welding count of each fixed spot welding machine system 3 reaches the packing setting value in the PLC control system 2, the PLC control system 2 will light up the B packing indicator in the working status indicator 9 on the corresponding fixed spot welding machine through the PLC signal acquisition and control module 8 and stop the equipment from working. The machine can continue to work only after the electrode is repaired and the D reset button is pressed manually.

[0021] G. When the welding count of each fixed spot welding machine system 3 reaches the production quantity setting value in the PLC control system 2, the PLC control system 2 will light up the C production completion indicator in the working status indicator 9 on the corresponding fixed spot welding machine system 3 through the PLC signal acquisition and control module 8, indicating that the production task is completed, and then wait for the next production plan to cycle like this.

[0022] H. The system's method for identifying the risk of missing welds is as follows: If a workpiece requires welding twice, and 20 pieces are packed into a box, and the B packing indicator light in the work status indicator 9 only illuminates after the 21st piece is completed, then a manual inspection of the finished products reveals an extra piece. This indicates that there is a missing weld in this box, meaning it was missed twice. Workers are then required to perform a 100% inspection of the freshly produced box to identify and address any missing welds promptly, preventing them from flowing into the next process or being shipped to the customer. If the B packing indicator light illuminates only after the 20th piece is completed, it indicates that the production of this box was normal and no missing welds occurred.

[0023] I. When the production completion indicator light for the last box C and the packing indicator light for box B are lit together, it indicates that production is normal and there is no missing weld. Otherwise, if the production completion indicator light for box C is lit but the packing indicator light for box B is not lit, it indicates that there is a missing weld in the last box.

[0024] Furthermore, there are multiple fixed spot welding machine systems 3, fixed spot welding machine control boxes 7, and working status indicator lights 9. Each fixed spot welding machine control box 7 is equipped with one PLC signal acquisition and control module 8, one working status indicator light 9, and one fixed spot welding machine system 3.

[0025] Furthermore, the computer control system 1 reads the welding data during each welding operation through the built-in Ethernet communication interface of the fixed spot welding machine control box 7, saves and displays it on the display of the computer control system 1.

[0026] Furthermore, the welding data generated during the production process of the fixed spot welding machine system 3 can be uploaded to the computer control system 1 and the PLC control system 2 through the fixed spot welding machine control box 7. Managers can centrally manage and monitor the production status and product quality of the spot welding equipment through the computer control system 1 and the PLC control system 2.

[0027] Furthermore, the PLC control system 2 controls the operation of the fixed spot welding machine system 3 through a program programmed in the PLC control system 2 based on the production information of the fixed spot welding machine control box 7 collected by the PLC signal acquisition and control module 8.

[0028] Furthermore, the computer control system 1 sets upper and lower limits for process parameters such as welding current. The welding current and other process parameters collected in the fixed spot welding machine control box 7 are compared with the set upper and lower limits. If they are within the specified range, the system is considered to be qualified and working normally. If they are not within the specified range, the computer control system 1 will consider them to be unqualified.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. The present invention provides an intelligent management and monitoring system for fixed spot welding machine production, which enables the monitoring and real-time display of welding data during the production process of fixed spot welding machines, and allows for the monitoring and management of the quality of each weld.

[0031] 2. Timely alarm prompts when missed inspections occur, avoiding the risk of incomplete welding, improving production efficiency, and enabling traceability and query of product production records, ensuring that the quality status of products is qualified, avoiding material waste and rework, reducing production costs, and improving product quality;

[0032] 3. It implements alarm prompts for production counting, packing counting, and grinding counting, and provides a difference alarm prompt function by comparing the process requirements of different products, avoiding the waste of resources from ineffective manual counting and reducing labor intensity; it automatically stops working when the number of welding times reaches the grinding time required by the process, and prompts the operator that it is time for grinding. The operator can reset the equipment after grinding before resuming production, avoiding the loopholes of traditional equipment that require workers to check the production quantity and grind for deviations. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of an existing fixed spot welding machine;

[0035] Figure 2 This is a schematic diagram of the structure of the intelligent management and monitoring system for fixed spot welding machine production of the present invention;

[0036] Figure 3This is a schematic diagram of the electrical information control principle;

[0037] Figure 4 This is a schematic diagram of the fixed spot welding machine system of the present invention;

[0038] Figure 5 A schematic diagram of signal acquisition for the control box of a fixed spot welding machine and the PLC signal acquisition and control module.

[0039] Figure 6 This is a schematic diagram of a computer control system;

[0040] Figure 7 This diagram illustrates the mechanical connections of a fixed spot welding machine system, a PLC signal acquisition and control module, working status indicator lights, and a fixed welding machine control box.

[0041] In the diagram: 1. Computer control system; 2. PLC control system; 3. Fixed spot welding machine system; 4. Network switch; 5. Ethernet communication cable; 6. CCLINK communication cable; 7. Fixed spot welding machine control box; 8. PLC signal acquisition and control module; 9. Working status indicator light. Detailed Implementation

[0042] The present invention will be further described below with reference to embodiments:

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0044] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] like Figures 1-6 As shown, the intelligent management and monitoring system for fixed spot welding machine production of the present invention consists of a computer control system 1, a PLC control system 2, multiple fixed spot welding machine systems 3, a network switch 4, an Ethernet communication line 5, a CCLINK communication line 6, multiple fixed spot welding machine control boxes 7, a PLC signal acquisition and control module 8, and multiple working status indicator lights 9.

[0046] like Figure 7As shown, each fixed spot welding machine consists of a fixed spot welding machine control box 7 and a fixed spot welding machine system 3. The fixed spot welding machine control box 7 is connected to the fixed spot welding machine system 3 via AM8 screws. The fixed spot welding machine control box 7 is the electrical control part of each fixed spot welding machine, and the fixed spot welding machine system 3 is the mechanical structure part of each fixed spot welding machine. The fixed spot welding machine control box 7 and the fixed spot welding machine system 3 together form a complete fixed spot welding machine. The PLC signal acquisition and control module 8 is fixed to the spot welding machine control box 7 using BM5 screws. An opening is made on the side of the fixed spot welding machine control box 7, and then the working status indicator light 9 is installed.

[0047] like Figure 2 As shown, each fixed spot welding machine system 3 is connected to the PLC control system 2 and the computer control system 1 via Ethernet communication lines 5, forming an Ethernet signal information exchange network. The PLC control system 2 is connected to each PLC signal acquisition and control module 8 via CCLINK communication lines 6, forming a CCLINK information exchange network.

[0048] like Figure 5 As shown, the PLC signal acquisition and control module 8 is connected to the spot welding machine control box 7 and the working status indicator light 9 via control wires, so that the PLC signal acquisition and control module 8 can control the spot welding machine control box 7 and the working status indicator light 9.

[0049] The computer control system 1 stores the production tasks of each fixed spot welding machine system 3 and transmits these tasks to the PLC control system 2 via data exchange. The computer control system 1 also reads welding data from each welding operation through the built-in Ethernet communication interface of the fixed spot welding machine control box 7, saves and displays the data on the monitor of the computer control system 1.

[0050] The fixed spot welding machine system 3 is the mechanical movement part of the welding operation. Electrical control system information and welding data during the production process can be uploaded to the computer control system 1 and PLC control system 2 via the fixed spot welding machine control box 7. Management personnel can centrally manage and monitor the production status and product quality of the spot welding equipment through the computer control system 1 and PLC control system 2. Simultaneously, the PLC control system 2 controls the operation of the fixed spot welding machine system 3 based on the production information collected by the PLC signal acquisition and control module 8 from the fixed spot welding machine control box 7, using a pre-programmed procedure.

[0051] The computer control system 1 consists of a computer and special development software, and quantity information such as production tasks can be displayed and edited in the software. Upper and lower limit values of process parameters such as welding current are set in the software program of the computer control system 1. Then, the process parameters such as welding current collected in the fixed spot welder control box 7 are compared with the set upper and lower limit values. If it is considered qualified and operates normally within the specified range, if it is not within the specified range, the computer control system 1 will consider it unqualified; then, the computer control system 1 transmits the unqualified information to the PLC control system 2, and the PLC control system 2 controls the equipment to stop working and gives an alarm prompt.

[0052] According to the actual situation on site, first install the computer control system 1 and the PLC control system 2 near multiple fixed spot welder systems 3. Then, use an Ethernet communication cable 5 and a network switch 4 to connect the computer control system 1, the PLC control system 2, and the fixed spot welder control box 7 together to form a local area network. Then, connect the PLC control system 2 and the fixed spot welder control box 7 through a CCLINK communication cable 6 to establish an information exchange network at the control end.

[0053] As Figure 2 shown, the intelligent management and monitoring method for the production of the fixed spot welder of the present invention includes the following steps:

[0054] 1. Manually fill in production tasks such as the production plan quantity, product packing quantity, and electrode dressing times setting of each fixed spot welder system 3 into the computer control system 1 that has been programmed.

[0055] 2. After filling in the production tasks, the computer control system 1 that has been programmed starts the data sending function and sends the production tasks of each fixed spot welder system 3 to the PLC control system 2 through the pre-established Ethernet communication cable 5.

[0056] 3. When the PLC control system 2 receives the production tasks sent by the computer control system 1, it sends the production information to the PLC signal acquisition and control module 8 through the pre-established CCLINK communication cable 6, and then controls the production of each fixed spot welder system 3 through the PLC signal acquisition and control module 8.

[0057] 4. When each fixed spot welding machine system 3 performs each welding operation, the computer control system 1 will collect welding data such as welding current and welding time through the established Ethernet communication line 5, and then save and display it in the computer control system 1. In this way, after the computer control system 1 collects the welding data, the specific welding data information can be directly observed by the operator. The welding information can be used to monitor the welding quality status and query the history. The computer control system 1 can determine whether the collected welding current is qualified and transmit the welding failure information to the PLC control system 2. The PLC control system 2 will then control the equipment to stop working and issue an alarm.

[0058] 5. Simultaneously, during each welding operation of each fixed spot welding machine system 3, the PLC control system 2 will collect and count the welding completion signal from the fixed welding machine control box 7 through the established CCLINK communication line 6. When the welding count of each fixed spot welding machine system 3 reaches the electrode repair setting value in the PLC control system 2, the PLC control system 2 will illuminate the A electrode repair indicator light in the working status indicator light 9 on the corresponding fixed spot welding machine system 3 through the PLC signal acquisition and control module 8 and stop the equipment from working. The equipment can only continue working after the electrode is repaired and the D reset button is pressed manually.

[0059] 6. When the welding count of each fixed spot welding machine system 3 reaches the packing setting value in the PLC control system 2, the PLC control system 2 will light up the B packing indicator in the working status indicator 9 on the corresponding fixed spot welding machine system 3 through the PLC signal acquisition and control module 8 and stop the equipment from working. The equipment can only continue to work after the electrode is repaired and the D reset button is pressed manually.

[0060] 7. When the welding count of each fixed spot welding machine system 3 reaches the production quantity setting value in the PLC control system 2, the PLC control system 2 will light up the C production completion indicator in the working status indicator 9 on the corresponding fixed spot welding machine system 3 through the PLC signal acquisition and control module 8, indicating that the production task is completed, and then wait for the next production plan, and so on.

[0061] 8. The system's method for identifying missing weld risks is as follows: If a workpiece requires two welds, and 20 pieces are packed into a box, and the B packing indicator light in work status indicator 9 only illuminates after the 21st piece is completed, a manual inspection of the finished products reveals an extra piece. This indicates that there is a missing weld in this box, meaning it was missed twice. Workers are then required to perform a 100% inspection of the freshly produced box to identify and address any missing welds promptly, preventing them from flowing to the next process or being shipped to the customer. If the B packing indicator light illuminates only after the 20th piece is completed, it indicates that the production of this box was normal and no missing weld incidents occurred.

[0062] 9. When the production completion indicator light for the last box C and the packing indicator light for box B are lit together, it indicates that production is normal and there is no missing weld. Otherwise, if the production completion indicator light for box C is lit but the packing indicator light for box B is not lit, it indicates that there is a missing weld in the last box.

[0063] When the fixed spot welding machine system 3 welds once, the output port of pin 12 of the system motherboard wiring port A in the fixed spot welding machine control box 7 will output a signal after welding is completed. After the wiring in the figure, the PLC signal acquisition and control module 8 can collect the welding completion output signal. Then, the program in the PLC control system 2 calculates the working status of the equipment. If the welding count reaches the set quantity of grinding, packing, and production completion, the PLC control system 2 will control the start and stop of the equipment through the wiring of the PLC signal acquisition and control module 8 to control the start and stop of the equipment. At the same time, the corresponding A electrode repair indicator, B packing indicator, and C production completion indicator in the working status indicator 9 will be lit to indicate the current working status of the equipment to the worker.

[0064] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for intelligent management and monitoring of fixed spot welding machine production, characterized in that, Includes the following steps: A. Manually set the production plan quantity, product packing quantity and electrode repair times for each fixed spot welding machine system (3) and fill them into the computer control system (1); B. After the production task is filled in, the computer control system (1) starts the data sending function and sends the production task of each fixed spot welding machine system (3) to the PLC control system (2) through the pre-established Ethernet communication line (5). C. The PLC control system (2) receives the production task sent by the computer control system (1), and sends the production information to the PLC signal acquisition and control module (8) through the pre-established CCLINK communication line (6). Then, the PLC signal acquisition and control module (8) performs production control on each fixed spot welding machine system (3). D. When each fixed spot welding machine system (3) performs each welding operation, the computer control system (1) collects the welding data of welding current and welding time during each welding operation through the established Ethernet communication line (5), saves and displays it in the computer control system (1). The computer control system (1) can determine whether the collected welding current is qualified and transmit the welding non-qualified information to the PLC control system (2). The PLC control system (2) controls the equipment to stop working and alarms. E. When each welding operation is performed in each fixed spot welding machine system (3), the PLC control system (2) collects the welding completion signal of the fixed spot welding machine control box (7) through the established CCLINK communication line (6) and counts it once. When the welding count of each fixed spot welding machine system (3) reaches the electrode repair setting value in the PLC control system (2), the PLC control system (2) will light up the A electrode repair indicator in the working status indicator (9) on the corresponding fixed spot welding machine system (3) through the PLC signal acquisition control module (8) and stop the equipment from working. The work can only continue after the electrode is repaired and the D reset button is pressed manually. F. When the welding count of each fixed spot welding machine system (3) reaches the packing setting value in the PLC control system (2), the PLC control system (2) will light up the B packing indicator in the working status indicator (9) on the corresponding fixed spot welding machine system (3) through the PLC signal acquisition control module (8) and stop the equipment from working. The equipment can continue to work only after the electrode is repaired and the D reset button is pressed manually. G. When the welding count of each fixed spot welding machine system (3) reaches the production quantity setting value in the PLC control system (2), the PLC control system (2) will light up the C production completion indicator in the working status indicator (9) on the corresponding fixed spot welding machine system (3) through the PLC signal acquisition control module (8), indicating that the production task is completed, and then wait for the next production plan to cycle like this. H. System Identification of Missing Weld Risks: If a workpiece needs to be welded twice, and 20 pieces are packed into a box, and the B packing indicator light in the work status indicator (9) only lights up after the 21st piece is finished, the manual inspection of the finished products will find that there is one extra piece. The manual will find that there is a missing weld in the actual box of workpieces, which has been missing welded twice. At this time, the worker is required to perform a 100% inspection of the box that has just been produced. Through the 100% inspection, the worker can find and deal with the missing weld in time. If the B packing indicator light only lights up after the 20th piece is finished, it means that the production of this box is normal and there is no missing weld event. I. When the production completion indicator light for the last box C and the packing indicator light for box B are lit together, it means that the production is normal and there is no missing weld. Otherwise, when the production completion indicator light for C is lit but the packing indicator light for B is not lit, it means that there is a missing weld in the last box. The fixed spot welding machine system (3), fixed spot welding machine control box (7), and working status indicator (9) are all multiple. Each fixed spot welding machine control box (7) is equipped with one PLC signal acquisition and control module (8), one working status indicator (9), and one fixed spot welding machine system (3). The computer control system (1) reads the welding data during each welding operation through the built-in Ethernet communication interface of the fixed spot welding machine control box (7), saves it, and displays it on the display of the computer control system (1). The welding data of the fixed spot welding machine system (3) during the production process can be uploaded to the computer control system (1) and PLC control system (2) through the fixed spot welding machine control box (7). The management personnel can use the computer to access the data. The control system (1) and the PLC control system (2) centrally manage and monitor the production status and product quality of the spot welding equipment. The PLC control system (2) controls the operation of the fixed spot welding machine system (3) through the program prepared in the PLC control system (2) based on the production information of the fixed spot welding machine control box (7) collected by the PLC signal acquisition control module (8). The upper limit and lower limit of the welding current process parameters are set in the computer control system (1). The welding current process parameters collected in the fixed spot welding machine control box (7) are compared with the set upper limit and lower limit. If they are within the specified range, they are considered to be qualified and working normally. If they are not within the specified range, the computer control system (1) will consider them to be unqualified. The fixed spot welding machine production intelligent management and monitoring system adopted by the fixed spot welding machine production intelligent management and monitoring method mainly consists of a computer control system (1), a PLC control system (2), multiple fixed spot welding machines, a PLC signal acquisition and control module (8), and multiple working status indicator lights (9) installed on the fixed spot welding machines. Each fixed spot welding machine consists of a fixed spot welding machine system (3) and a fixed spot welding machine control box (7); the fixed spot welding machine control box (7) is connected to the PLC signal acquisition and control module (8), the working status indicator (9) and the fixed spot welding machine system (3) respectively; the PLC signal acquisition and control module (8) is connected to the fixed spot welding machine control box (7) and the working status indicator (9) respectively. Each fixed spot welding machine system (3) is connected to the PLC control system (2) and the computer control system (1) via an Ethernet communication line (5) to form an Ethernet signal information exchange network; the PLC control system (2) is connected to each PLC signal acquisition and control module (8) via a CCLINK communication line (6) to form a CCLINK information exchange network; the computer control system (1), the PLC control system (2), and the fixed spot welding machine control box (7) are connected together via an Ethernet communication line (5) and a network switch (4) to form a local area network; The computer control system (1) is used to store the production tasks of each fixed spot welding machine system (3) and transmit the production tasks to the PLC control system (2) through data exchange; the welding data of the fixed spot welding machine system (3) during the production process can be uploaded to the computer control system (1) and the PLC control system (2) through the fixed spot welding machine control box (7) for managers to centrally manage and monitor the production status and product quality of the spot welding equipment; the PLC control system (2) can also perform production control on the fixed spot welding machine system (3) according to the production information of the fixed spot welding machine control box (7) collected by the PLC signal acquisition control module (8); the computer control system (1) can determine whether the welding current collected by the fixed spot welding machine control box (7) is qualified, transmit the welding unqualified information to the PLC control system (2), and the PLC control system (2) controls the equipment to stop working and alarm prompts; The fixed spot welding machine system (3) and the PLC signal acquisition and control module (8) are respectively screwed to the fixed welding machine control box (7); the working status indicator (9) is installed at the opening on the side of the fixed spot welding machine control box (7).

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