Plug box welding production line control system

Abstract

The invention discloses a jack box welding production line control system, which belongs to the technical field of automatic welding, and comprises a frame body, the frame body is rotatably connected with a threaded rotating shaft, the threaded rotating shaft is in threaded connection with a clamping bracket, the clamping bracket is slidably connected with a plurality of clamping plates, the clamping bracket is connected with a side surface clamping assembly, and the clamping bracket is connected with a U-shaped plate. The clamping support is connected with a single-side clamping assembly, positioning supports are slidably connected to the two ends of the clamping support, positioning grooves are formed in the positioning supports, the clamping support is connected with an end clamping assembly, the frame body is fixedly connected with a welding manipulator, the position, close to the side face clamping assembly, of the rack is connected with image acquisition equipment, and the frame body is connected with a detection system. The detection system comprises an image acquisition module, a data storage module, a feeding control module, a welding control module and an image processing module. The automatic welding system has the effects that rapid positioning and real-time welding seam detection and automatic processing can be carried out, and the welding quality is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of automated welding, and in particular to a control system for a plug-in box welding production line. Background Technology

[0002] Currently, plug-in box welding involves welding the box body panels to the top and bottom end plates, as well as welding the box body panels to the hinges. The door is then attached to the box body via hinges in subsequent processes. The box body is typically made of galvanized sheet metal. To ensure production efficiency, automated welding lines are commonly used for plug-in boxes. These lines usually include multiple welding machines, robotic arms to control their movement, and fixed workstations to hold the workpieces. The specific structure is usually customized based on the product being welded. Due to their large size, plug-in boxes require a relatively large production line for welding. The welding process involves welding the top and bottom ends of the U-shaped plate to form the box body, and then welding the door to the box body using hinges.

[0003] The existing technical solutions mentioned above have the following drawbacks: during the welding process of the plug-in box, due to the thick plate and large volume, it is difficult to position the workpiece, and welding quality problems such as low welding strength or unqualified welds are prone to occur during automated welding. Summary of the Invention

[0004] In order to improve welding quality and reduce welding quality problems, this application provides a control system for a plug-in box welding production line.

[0005] The control system for a plug-in box welding production line provided in this application adopts the following technical solution: A control system for a plug-in box welding production line includes a frame, a horizontally arranged threaded rotating shaft rotatably connected to the frame, a clamping bracket for placing a box panel threaded to the threaded rotating shaft, a clamping bracket slidably connected to the frame, a plurality of clamping plates slidably connected to the clamping bracket, a side clamping assembly for driving the clamping plates to synchronously clamp or release the box panel connected to the clamping bracket, a plurality of U-shaped plates for engaging the connecting leaf connected to the clamping bracket, a single-sided clamping assembly for driving the U-shaped plates to abut or move away from the box panel connected to the clamping bracket, positioning brackets slidably connected to both ends of the clamping bracket, positioning slots for engaging end plates opened near the clamping bracket, the positioning brackets sliding along the length of the threaded rotating shaft, an end clamping assembly for driving the positioning brackets to synchronously move closer or further away from each other connected to the clamping bracket, and a welding robot fixedly connected to the frame near the side clamping assembly. An image acquisition device is connected to the frame near the side clamping assembly, and a detection system is connected to the frame. The detection system includes an image acquisition module, a data storage module, a material feeding control module, a welding control module, and an image processing module. The image acquisition module acquires image information from multiple angles on the clamping bracket and transmits the image information to the image processing module; The data storage module stores the loading program, welding program, multi-angle workpiece images, and multi-angle weld images, and associates the workpiece images with the workpiece code. The loading program includes the movement steps of the clamping plate, the snap-fit ​​end plate, and the U-shaped plate. The welding program includes the movement steps of the welding robot and the threaded rotating shaft. The feeding control module calls the feeding program of the data storage module, and after receiving the start signal from the outside, it controls the movement of the clamping plate, the snap-fit ​​end plate and the U-shaped plate according to the feeding program. The welding control module calls the welding program in the data storage module, and after receiving the start signal from the outside, controls the welding robot to start and move according to the welding program; The image processing module is pre-set with weld seam status and control commands. It calls the workpiece image and weld seam image stored in the data storage module, analyzes the workpiece area in the image information of the workpiece image, determines the weld seam position in the workpiece area and marks it, and sends control commands to the material feeding control module and welding control module based on the weld seam status of the marked part in the image information of the weld seam image.

[0006] By adopting the above scheme, when the user needs to weld the plug-in box, the clamping bracket can be moved outside the working range of the welding robot by the threaded rotating shaft. The box body panel is placed on the clamping bracket, and the clamping plate is used for lateral positioning and clamping. Then, the two end plates are placed into the two positioning slots respectively, and the positioning bracket is pushed to both ends of the box body panel. Then, the hinge is placed on the U-shaped plate, and the U-shaped plate is pressed against the box body panel to complete the positioning of each workpiece of the plug-in box. Then, the clamping bracket is moved to the working range of the welding robot by the threaded rotating shaft. According to the preset program, the welding robot welds each workpiece. The hinge is welded first on the side with the opening on the U-shaped plate. Then, the U-shaped plate is lowered to weld the other three sides. The end plates are welded first from the inside of the box body panel. Then, the positioning bracket is retracted and the remaining positions are welded. During the welding process, the detection system monitors the weld status in real time, and determines whether the weld is qualified through image processing. If an unqualified weld is found, a preset control command is sent to perform repair welding and other processing on the unqualified weld and issue an alarm. This system can quickly and accurately position the welding of the plug-in box to ensure accurate welding position, and the detection system can control the welding process in real time, effectively improving the welding quality.

[0007] Preferably, the side clamping assembly includes a first double-threaded rod threadedly connected to the clamping plate. The first double-threaded rod is arranged perpendicular to the length direction of the threaded rotation axis. A first drive motor is fixedly connected to the clamping bracket near the first double-threaded rod, and the output shaft of the first drive motor is fixedly connected to the first double-threaded rod.

[0008] By adopting the above scheme, the first drive motor can drive the first double threaded rod to rotate, which in turn can drive the two clamping plates to move synchronously in opposite directions.

[0009] Preferably, the single-sided clamping assembly includes a flipping frame rotatably connected to the clamping bracket, a U-shaped plate fixedly connected to the flipping frame, a second drive motor fixedly connected to the clamping bracket near the flipping frame, a flipping rod fixedly connected to the output shaft of the second drive motor, and the flipping frame fixedly connected to the flipping rod.

[0010] By adopting the above scheme, the second drive motor can drive the flipping frame to rotate through the flipping rod. When the clamping plate does not move towards the middle, the flipping frame is flat, allowing the clamping plate to slide freely. After the clamping plate clamps the box body panel, the flipping frame flips up, allowing the U-shaped plate to stick to the box body panel. At this time, the hinge on the U-shaped plate can also abut against the box body panel, ensuring accurate positioning and facilitating welding.

[0011] Preferably, the end clamping assembly includes a second double-threaded rod rotatably connected to the clamping bracket and a third drive motor fixedly connected to the clamping bracket. The output shaft of the third drive motor is fixedly connected to the second double-threaded rod. The second double-threaded rod is arranged parallel to the length direction of the threaded rotation axis. Two positioning brackets are respectively threaded to both ends of the second double-threaded rod. The two positioning brackets are slidably connected to a guide rod, which is arranged parallel to the length direction of the second double-threaded rod.

[0012] By adopting the above scheme, the third drive motor drives the second double threaded rod to rotate, and the second double threaded rod drives the two positioning brackets to move closer or further away synchronously, ensuring that the positioning brackets are fixed in position after the box body panel is finally clamped, thus ensuring the accuracy of positioning.

[0013] Preferably, the image processing module has a preset minimum correlation value. It sequentially uses each weld image to find the closest region in the workpiece area and associates it with the weld image. It compares the found region with the associated weld image to obtain the similarity percentage. Regions with a similarity percentage exceeding the minimum correlation value are retained as weld locations and marked.

[0014] By adopting the above scheme, when screening weld images, since the weld shape produced in the actual welding process may have slight differences, it is necessary to determine the weld image by similarity.

[0015] Preferably, the image processing module associates the weld state with control commands one by one. Each weld image is associated with the weld state. The module retrieves the associated weld state based on the weld image associated with the marked weld position and finds the associated control command based on the weld state.

[0016] By adopting the above scheme, the image processing module associates control commands with the weld status, and when selecting control commands, it can directly select the weld image.

[0017] Preferably, the positioning bracket is provided with a first inclined surface near the edge of the positioning groove, and the first inclined surface is inclined from one end near the positioning groove to the other end towards the other clamping end plate; the U-shaped plate is provided with a second inclined surface at the position for clamping the leaf, and the second inclined surface is inclined from one end away from the single-sided clamping assembly to the other end towards the clamping plate.

[0018] By adopting the above scheme, the first inclined surface is used to facilitate the insertion of the end plate into the positioning groove, and the second inclined surface facilitates the insertion of the hinge into the U-shaped plate.

[0019] Preferably, a feeding motor is fixedly connected to the frame near the threaded rotating shaft. The output shaft of the feeding motor is fixedly connected to one end of the threaded rotating shaft. The detection system also includes a feeding setting module. The feeding setting module has a first motor command unit, a second motor command unit, and a third motor command unit preset. The feeding setting module sets the forward and reverse start and start time of the first motor command unit, the second motor command unit, and the third motor command unit according to the received command. The first motor command unit controls the first drive motor according to the setting, the second motor command unit controls the second drive motor according to the setting, and the third motor command unit controls the third drive motor according to the setting. The feeding setting module combines the set first motor command unit, second motor command unit, and third motor command unit to generate a feeding program and sends the feeding program to the data storage module.

[0020] By adopting the above scheme, the system has a preset first motor instruction unit, a second motor instruction unit, and a third motor instruction unit. Users can customize the feeding program by editing the three instruction units.

[0021] Preferably, the data storage module has a preset 3D diagram of the plug-in box, a 3D coordinate system is established in the 3D diagram of the plug-in box, the 3D coordinates of each point in the 3D diagram of the plug-in box are marked, and the position status of all weld images according to the received instructions is marked. The position status mark includes position character units, status character units and quality character units. The position character unit is the 3D coordinates of each point in the weld position in the weld image. The status character unit includes before welding, during welding and after welding. The quality character unit includes qualified, undercut, weld bead, porosity and incomplete penetration. The image processing module has a preset weld recognition result. Based on the analysis of the workpiece image, the module obtains the corresponding workpiece region in the 3D diagram of the plug box, determines and marks the weld position in the workpiece region, determines the 3D coordinates of each point of the weld position based on the marked weld position, and combines the 3D coordinates of each point of the weld position with the position status mark corresponding to the marked part in the weld image recognition image information. The module reads the status character unit and quality character unit in the position status mark to determine the corresponding control command.

[0022] By adopting the above scheme, the system constructs a position status mark based on the unique characteristics of the weld. The position status mark and the input command are combined to form a control command. The position status mark corresponding to the current weld is determined by image comparison, and then the corresponding control command is retrieved from the position status mark to ensure the accuracy of the control command.

[0023] Preferably, the detection system further includes an instruction editing module, which calls the position status markers stored in the data storage module, extracts the status character units and quality character units from the position status markers to generate initial control instructions, receives externally input instructions and imports the instructions into the corresponding initial control instructions to generate control instructions, and transmits the control instructions to the image processing module.

[0024] By adopting the above scheme, when the user edits the control instructions, the position character unit and the status character unit combine the input instructions to generate the control instructions. It is not necessary to consider the weld position; only the state and quality of the weld are needed to determine the corresponding control instructions.

[0025] In summary, the present invention has the following beneficial effects: 1. This system can quickly and accurately position the welding of the plug-in box to ensure accurate welding position, and the welding process can be controlled in real time through the detection system, which can effectively improve the welding quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 This is a partial structural diagram of the prominent clamping bracket in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the structure of the clamping bracket in the unfolded state according to an embodiment of this application.

[0029] Figure 4 This is a partial structural diagram of the side clamping component and the end clamping component in the embodiments of this application.

[0030] Figure 5 This is a system block diagram of the detection system according to an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures: 1. Frame; 11. Threaded rotating shaft; 12. Feeding motor; 2. Clamping bracket; 21. Clamping plate; 22. Side clamping assembly; 221. First double threaded rod; 222. First drive motor; 23. U-shaped plate; 231. Second inclined plane; 24. Single-sided clamping assembly; 241. Tilting frame; 242. Second drive motor; 243. Tilting rod; 25. Positioning bracket; 251. Positioning groove; 252. First inclined plane; 26. End clamping assembly; 261. Second double threaded rod; 262. Third drive motor; 263. Guide rod; 3. Welding robot; 4. Detection system; 41. Image acquisition module; 411. Image acquisition device; 42. Data storage module; 43. Feeding control module; 44. Welding control module; 45. Image processing module; 46. Feeding setting module; 47. Instruction editing module. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses a control system for a plug-in box welding production line, such as... Figure 1 and Figure 2 As shown, the device includes a frame 1, to which a horizontally arranged threaded rotating shaft 11 is rotatably connected. The threaded rotating shaft 11 is threadedly connected to a clamping bracket 2 for placing the box enclosure panels. A feeding motor 12 is fixedly connected to the frame 1 near the threaded rotating shaft 11, and the output shaft of the feeding motor 12 is fixedly connected to one end of the threaded rotating shaft 11. The clamping bracket 2 for placing the box enclosure panels is threadedly connected to the threaded rotating shaft 11 and is slidably connected to the frame 1. A welding robot 3 is fixedly connected to the frame 1 near the side clamping assembly 22.

[0034] like Figure 2 and Figure 3As shown, multiple clamping plates 21 are slidably connected to the clamping bracket 2. The clamping bracket 2 is connected to a side clamping assembly 22 that drives the clamping plates 21 to simultaneously clamp or release the box enclosure panel. The clamping bracket 2 is also connected to multiple U-shaped plates 23 for engaging the leaf. A second inclined surface 231 is provided at the position where the U-shaped plate 23 engages the leaf. The second inclined surface 231 slopes from one end away from the single-sided clamping assembly 24 towards the other end and closer to the clamping plate 21. The clamping bracket 2 is connected to a single-sided clamping assembly 24 that drives the U-shaped plate 23 to abut against or move away from the box enclosure panel. Positioning brackets 25 are slidably connected to both ends of the clamping bracket 2. Positioning brackets 25 have positioning grooves 251 for engaging end plates near the clamping bracket 2. Each positioning bracket 25 has a first inclined surface 252 near the edge of the positioning groove 251. The first inclined surface 252 slopes from one end near the positioning groove 251 towards the other end and closer to the other engaging end plate. The positioning bracket 25 slides along the length of the threaded rotation axis 11, and the clamping bracket 2 is connected to an end clamping assembly 26 that drives the positioning bracket 25 to move closer or further away from each other synchronously. The first inclined surface 252 is used to facilitate the insertion of the end plate into the positioning groove 251, and the second inclined surface 231 is used to facilitate the insertion of the hinge into the U-shaped plate 23.

[0035] like Figure 2 and Figure 3 As shown, the single-sided clamping assembly 24 includes a flipping frame 241 rotatably connected to the clamping bracket 2, a U-shaped plate 23 fixedly connected to the flipping frame 241, a second drive motor 242 fixedly connected to the clamping bracket 2 near the flipping frame 241, and a flipping rod 243 fixedly connected to the output shaft of the second drive motor 242. The flipping frame 241 is fixedly connected to the flipping rod 243. The second drive motor 242 can drive the flipping frame 241 to rotate through the flipping rod 243. When the clamping plate 21 is not close to the center, the flipping frame 241 is flat, allowing the clamping plate 21 to slide freely. After the clamping plate 21 clamps the box body panel, the flipping frame 241 flips up, allowing the U-shaped plate 23 to fit tightly against the box body panel. At this time, the hinge on the U-shaped plate 23 can also abut against the box body panel, ensuring accurate positioning and facilitating welding.

[0036] like Figure 2 and Figure 4As shown, the side clamping assembly 22 includes a first double-threaded rod 221 threadedly connected to the clamping plate 21. The first double-threaded rod 221 is arranged perpendicular to the length direction of the threaded rotation axis 11. A first drive motor 222 is fixedly connected to the clamping bracket 2 near the first double-threaded rod 221, and the output shaft of the first drive motor 222 is fixedly connected to the first double-threaded rod 221. The first drive motor 222 drives the first double-threaded rod 221 to rotate, which in turn drives the two clamping plates 21 to move synchronously in opposite directions. The end clamping assembly 26 includes a second double-threaded rod 261 rotatably connected to the clamping bracket 2 and a third drive motor 262 fixedly connected to the clamping bracket 2. The output shaft of the third drive motor 262 is fixedly connected to the second double-threaded rod 261, which is arranged parallel to the length direction of the threaded rotation axis 11. Two positioning brackets 25 are respectively threadedly connected to the two ends of the second double-threaded rod 261, and the two positioning brackets 25 are slidably connected to a guide rod 263, which is arranged parallel to the length direction of the second double-threaded rod 261. The third drive motor 262 drives the second double threaded rod 261 to rotate. The second double threaded rod 261 drives the two positioning brackets 25 to move closer or further away synchronously, ensuring that the positioning brackets 25 are fixed in position after the box body panel is finally clamped, thus ensuring the accuracy of positioning.

[0037] like Figure 5 As shown, an image acquisition device 411 is connected to the frame near the side clamping assembly 22. The frame 1 is connected to a detection system 4. The detection system 4 includes an image acquisition module 41, a data storage module 42, a feeding control module 43, a welding control module 44, an image processing module 45, a feeding setting module 46, and an instruction editing module 47.

[0038] like Figure 5 As shown, the image acquisition module 41 acquires image information from multiple angles on the clamping bracket 2 and transmits the image information to the image processing module 45. The data storage module 42 stores the loading program, welding program, multi-angle workpiece images, and multi-angle weld images, associating the workpiece images with the workpiece code. The loading program includes the movement steps of the clamping plate 21, the snap-fit ​​end plate, and the U-shaped plate 23. The welding program includes the movement steps of the welding robot 3 and the threaded rotating shaft 11. The data storage module 42 has a preset 3D diagram of the plug-in box. A 3D coordinate system is established in the 3D diagram of the plug-in box, and the 3D coordinates of each point in the 3D diagram of the plug-in box are marked. The position and status of all weld images according to the received instructions are marked. The position and status marks include position character units, status character units, and quality character units. The position character unit is the 3D coordinate corresponding to each point of the weld position in the weld image. The status character unit includes before welding, during welding, and after welding. The quality character unit includes qualified, undercut, weld bead, porosity, and incomplete penetration.

[0039] like Figure 5As shown, the feeding control module 43 calls the feeding program of the data storage module 42, and after receiving the start signal from the outside, controls the movement of the clamping plate 21, the snap-fit ​​end plate, and the U-shaped plate 23 according to the feeding program. The welding control module 44 calls the welding program of the data storage module 42, and after receiving the start signal from the outside, controls the welding robot 3 to start and move according to the welding program.

[0040] like Figure 5 As shown, the instruction editing module 47 calls the position status markers stored in the data storage module 42. The instruction editing unit extracts the status character unit and quality character unit from the position status markers to generate initial control instructions. It receives externally input instructions and imports them into the corresponding initial control instructions to generate control instructions, which are then transmitted to the image processing module 45. When the user edits the control instructions, the position character unit and status character unit combine with the input instructions to generate control instructions. The weld position does not need to be considered; only the weld status and quality need to be considered to determine the corresponding control instructions.

[0041] like Figure 5 As shown, the image processing module 45 is preset with a minimum correlation value, weld recognition result, weld status, and control commands. It calls the workpiece image and weld image stored in the data storage module 42, analyzes the corresponding workpiece region in the image information of the workpiece image, determines the weld position in the workpiece region, and marks it. The image processing module 45 sequentially uses each weld image to find the closest region in the workpiece region and associates it with the weld image. It compares the found region with the associated weld image to obtain a similarity percentage, retaining regions with a similarity percentage exceeding the minimum correlation value as weld positions and marking them. Based on the weld status of the marked portion in the weld image recognition image information, it sends control commands to the feeding control module 43 and the welding control module 44. The image processing module 45 associates the weld status with the control commands one by one; each weld image is associated with a weld status. It retrieves the associated weld status based on the weld image associated with the marked weld position and finds the associated control commands based on the weld status. When filtering weld images, since the weld shape produced during the actual welding process may have slight differences, it is necessary to determine the weld image through similarity. The image processing module 45 associates control commands with weld status, and when selecting a control command, it can directly select the weld image.

[0042] like Figure 5As shown, the image processing module 45 analyzes the workpiece region in the corresponding workpiece image information based on the workpiece image, obtains the region in the 3D diagram of the plug-in box corresponding to the workpiece image, determines and marks the weld position in the workpiece region, determines the 3D coordinates of each point of the weld position based on the marked weld position, and combines the 3D coordinates of each point of the weld position with the position status mark corresponding to the marked part in the weld image recognition image information, reads the status character unit and quality character unit in the position status mark to determine the corresponding control command. The system constructs the position status mark through the unique features of the weld, and the position status mark and input command are combined to form the control command. The system determines the position status mark corresponding to the current weld through image comparison, and then retrieves the corresponding control command from the position status mark to ensure the accuracy of the control command.

[0043] The feeding setting module 46 has preset first motor command units, second motor command units, and third motor command units. Based on received commands, the feeding setting module 46 sets the forward and reverse start-up and start-up time of the first, second, and third motor command units. The first motor command unit controls the first drive motor 222, the second motor command unit controls the second drive motor 242, and the third motor command unit controls the third drive motor 262. The feeding setting module 46 combines the set first, second, and third motor command units to generate a feeding program, which is then sent to the data storage module 42. The system has preset first, second, and third motor command units; users can customize the feeding program by editing these three command units.

[0044] The implementation principle of the plug-in box welding production line control system in this application embodiment is as follows: When the user needs to weld the plug-in box, the clamping bracket 2 can be moved outside the working range of the welding robot 3 by the threaded rotating shaft 11. The box body panel is placed on the clamping bracket 2, and the clamping plate 21 is used for lateral positioning and clamping. Then, the two end plates are placed in the two positioning slots 251 respectively, and the positioning bracket 25 pushes against both ends of the box body panel. Then, the hinge is placed on the U-shaped plate 23, and the U-shaped plate 23 is pressed against the box body panel to complete the positioning of each workpiece of the plug-in box. Then, the clamping bracket 2 is moved to the working range of the welding robot 3 by the threaded rotating shaft 11. According to the preset program, the welding robot 3 welds each workpiece. The hinge is welded first on one side of the opening on the U-shaped plate 23. Then, the U-shaped plate 23 falls down to weld the other three sides. The end plates are welded first from the inside of the box body panel. Then, the positioning bracket 25 is retracted, and the remaining positions are welded.

[0045] During the welding process, the detection system 4 monitors the weld status in real time and determines whether the weld is qualified through image processing. If an unqualified weld is found, a preset control command is sent to perform repair welding and other processing on the unqualified weld and issue an alarm. This system can quickly and accurately position the welding of the plug box to ensure accurate welding position, and the detection system 4 controls the welding process in real time, effectively improving the welding quality.

[0046] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A control system for a plug-in box welding production line, characterized in that: The system includes a frame (1), which is rotatably connected to a horizontally arranged threaded rotating shaft (11). The threaded rotating shaft (11) is threadedly connected to a clamping bracket (2) for placing the box enclosure panel. The clamping bracket (2) is slidably connected to the frame (1). Multiple clamping plates (21) are slidably connected to the clamping bracket (2). The clamping bracket (2) is connected to a side clamping assembly (22) that drives the clamping plates (21) to simultaneously clamp or release the box enclosure panel. The clamping bracket (2) is connected to multiple U-shaped plates (23) for engaging the connecting leaf. The clamping bracket (2) is connected to a drive U-shaped plate ( 23) A single-sided clamping assembly (24) that abuts against or moves away from the enclosure panel; a positioning bracket (25) is slidably connected at both ends of the clamping bracket (2); a positioning groove (251) for snapping the end plate is opened near the clamping bracket (2); the positioning bracket (25) slides along the length of the threaded rotation axis (11); the clamping bracket (2) is connected to an end clamping assembly (26) that drives the positioning bracket (25) to move closer or further away from each other synchronously; a welding robot (3) is fixedly connected near the side clamping assembly (22) of the frame (1); An image acquisition device (411) is connected to the frame near the side clamping assembly (22), and a detection system (4) is connected to the frame (1). The detection system (4) includes an image acquisition module (41), a data storage module (42), a material feeding control module (43), a welding control module (44), and an image processing module (45). The image acquisition module (41) acquires image information from multiple angles on the clamping bracket (2) and transmits the image information to the image processing module (45); The data storage module (42) stores the loading program, welding program, multi-angle workpiece images and multi-angle weld images, and associates the workpiece images with the workpiece code. The loading program includes the movement steps of the clamping plate (21), the snap-fit ​​end plate and the U-shaped plate (23). The welding program includes the movement steps of the welding robot (3) and the thread rotating shaft (11). The feeding control module (43) calls the feeding program of the data storage module (42), and after receiving the start signal input from the outside, controls the movement of the clamping plate (21), the snap-fit ​​end plate and the U-shaped plate (23) according to the feeding program; The welding control module (44) calls the welding program of the data storage module (42), and after receiving the start signal input from the outside, controls the welding robot (3) to start and move according to the welding program; The image processing module (45) has preset weld status and control instructions. It calls the workpiece image and weld image stored in the data storage module (42), analyzes the workpiece area of ​​the corresponding workpiece image in the image information based on the workpiece image, determines the weld position in the workpiece area and marks it, and sends control instructions to the material control module (43) and welding control module (44) based on the weld status of the marked part in the image information based on the weld image recognition.

2. The control system for a plug-in box welding production line according to claim 1, characterized in that: The side clamping assembly (22) includes a first double threaded rod (221) threaded onto the clamping plate (21). The first double threaded rod (221) is arranged perpendicular to the length direction of the threaded rotation axis (11). A first drive motor (222) is fixedly connected to the clamping bracket (2) near the first double threaded rod (221). The output shaft of the first drive motor (222) is fixedly connected to the first double threaded rod (221).

3. The control system for a plug-in box welding production line according to claim 2, characterized in that: The single-sided clamping assembly (24) includes a flipping frame (241) rotatably connected to the clamping bracket (2), a U-shaped plate (23) fixedly connected to the flipping frame (241), a second drive motor (242) fixedly connected to the clamping bracket (2) near the flipping frame (241), a flipping rod (243) fixedly connected to the output shaft of the second drive motor (242), and the flipping frame (241) fixedly connected to the flipping rod (243).

4. The control system for a plug-in box welding production line according to claim 3, characterized in that: The end clamping assembly (26) includes a second double threaded rod (261) rotatably connected to the clamping bracket (2) and a third drive motor (262) fixedly connected to the clamping bracket (2). The output shaft of the third drive motor (262) is fixedly connected to the second double threaded rod (261). The second double threaded rod (261) is arranged parallel to the length direction of the threaded rotation axis (11). Two positioning brackets (25) are respectively threaded to both ends of the second double threaded rod (261). The two positioning brackets (25) are slidably connected to a guide rod (263). The guide rod (263) is arranged parallel to the length direction of the second double threaded rod (261).

5. The control system for a plug-in box welding production line according to claim 1, characterized in that: The image processing module (45) has a preset minimum correlation value. It sequentially uses each weld image to find the closest region in the workpiece area and associates it with the weld image. It compares the found region with the associated weld image to obtain the similarity percentage. It retains the region whose similarity percentage exceeds the minimum correlation value as the weld location and marks it.

6. The control system for a plug-in box welding production line according to claim 5, characterized in that: The image processing module (45) associates the weld status with the control commands one by one. Each weld image is associated with the weld status. The weld image associated with the marked weld position is used to determine the weld status, and the associated control command is found according to the weld status.

7. The control system for a plug-in box welding production line according to claim 1, characterized in that: The positioning bracket (25) has a first inclined surface (252) at the edge of the positioning groove (251). The first inclined surface (252) is inclined from one end near the positioning groove (251) to the other end towards the other snap-fit ​​end plate. The U-shaped plate (23) has a second inclined surface (231) at the position for snapping the leaf. The second inclined surface (231) is inclined from one end away from the single-sided clamping assembly (24) to the other end towards the clamping plate (21).

8. The control system for a plug-in box welding production line according to claim 4, characterized in that: A feeding motor (12) is fixedly connected to the frame (1) near the threaded rotating shaft (11). The output shaft of the feeding motor (12) is fixedly connected to one end of the threaded rotating shaft (11). The detection system (4) also includes a feeding setting module (46). The feeding setting module (46) is preset with a first motor command unit, a second motor command unit and a third motor command unit. The feeding setting module (46) sets the forward and reverse start and start time of the first motor command unit, the second motor command unit and the third motor command unit according to the received command. The first motor command unit controls the first drive motor (222) according to the setting. The second motor command unit controls the second drive motor (242) according to the setting. The third motor command unit controls the third drive motor (262) according to the setting. The feeding setting module (46) combines the set first motor command unit, second motor command unit and third motor command unit to generate a feeding program and sends the feeding program to the data storage module (42).

9. The control system for a plug-in box welding production line according to claim 1, characterized in that: The data storage module (42) has a preset three-dimensional diagram of the plug box. A three-dimensional coordinate system is established in the three-dimensional diagram of the plug box, and the three-dimensional coordinates of each point in the three-dimensional diagram of the plug box are marked. The position and status of all weld images according to the received instructions are marked. The position and status marks include position character units, status character units and quality character units. The position character unit is the three-dimensional coordinates corresponding to each point of the weld position in the weld image. The status character unit includes before welding, during welding and after welding. The quality character unit includes qualified, undercut, weld bead, porosity and incomplete penetration. The image processing module (45) has a preset weld recognition result. Based on the workpiece image analysis image information, it obtains the workpiece area corresponding to the plug box in the workpiece image, determines the weld position in the workpiece area and marks it. Based on the marked weld position, it determines the three-dimensional coordinates of each point of the weld position. Combining the three-dimensional coordinates of each point of the weld position and the position status mark corresponding to the marked part in the weld image recognition image information, it reads the status character unit and quality character unit in the position status mark to determine the corresponding control command.

10. A control system for a plug-in box welding production line according to claim 9, characterized in that: The detection system (4) further includes an instruction editing module (47). The instruction editing module (47) calls the position status markers stored in the data storage module (42). The instruction editing unit extracts the status character unit and quality character unit in the position status marker to generate an initial control instruction. It receives external input instructions and imports the instructions into the corresponding initial control instruction to generate a control instruction. The control instruction is then transmitted to the image processing module (45).

Images