Welding device and method for pneumatic shutter with welding strength self-checking function

Abstract

The invention discloses a pneumatic shutter welding device and method with a welding strength self-checking function, and relates to the technical field of welding devices.The welding device comprises a positioning calibration mechanism, a clamping mechanism, a welding execution mechanism, a strength self-checking mechanism and a feeding mechanism, and the positioning calibration mechanism is fixedly connected with the feeding mechanism; the positioning calibration mechanism is in fastening connection with the clamping mechanism, the welding executing mechanism is in fastening connection with the strength self-checking mechanism, the feeding mechanism accurately conveys materials to be welded to the positioning calibration mechanism from the initial state, the positioning calibration mechanism can calibrate the initial positions and directions of the materials, and the clamping mechanism enables the materials to be firmly clamped and positioned. Deviation or shaking in the welding process is avoided, the welding position is finely adjusted, a strength self-checking mechanism forms a conduction loop through a conductive positive electrode and a conductive negative electrode, and potential quality hazards such as defects, slag inclusion, cracks or incomplete penetration are recognized.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, in particular to a welding device and method for a pneumatic shutter with a welding strength self-checking function. Background Art

[0002] Therefore, those skilled in the art provide a welding device and method for pneumatic shutters with a welding strength self-checking function to solve the problems raised in the above background. Summary of the invention

[0003] The object of the present invention is to provide a welding device and method for pneumatic shutters with a welding strength self-checking function to solve the problems raised in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The welding device comprises a positioning and calibration mechanism, a clamping mechanism, a welding actuator, a strength self-testing mechanism and a feeding mechanism. The positioning and calibration mechanism and the feeding mechanism are tightly connected, the positioning and calibration mechanism and the clamping mechanism are tightly connected, and the welding actuator and the strength self-testing mechanism are tightly connected.

[0006] By adopting the above technical solution, first, the feeding mechanism accurately transfers the material to be welded from the initial state to the positioning and calibration mechanism. The positioning and calibration mechanism can accurately calibrate the initial position and direction of the material, and ensure that the welding area of ​​the material accurately enters the preset welding position through the coordinated work of the positioning conveyor belt, positioning hydraulic cylinder, positioning motor and positioning push plate inside it. The clamping mechanism receives the material after positioning and calibration, and the material is firmly clamped and positioned through the close cooperation of the clamping hydraulic cylinder, upper clamping plate, lower clamping plate and clamping elastic parts to avoid displacement or shaking during welding; at the same time, the moving motor drives the moving wheel to fine-tune the welding position, so that the welding position reaches the optimal state. Subsequently, the welding gun in the welding actuator realizes the flexible spatial movement of the welding gun with the cooperation of the moving slide rail, slide rail block and rotating motor, and accurately welds the welding points of the material to ensure stable and reliable welding quality. Finally, the welding actuator is directly and securely connected to the strength self-test mechanism. After the welding process is completed, the strength self-test mechanism uses the positive and negative electrodes to form a conduction circuit to identify quality risks such as defects, slag inclusions, cracks or incomplete penetration, thereby preventing unqualified products from flowing into the next process or the market.

[0007] Furthermore, the feeding mechanism includes a material rack, a length screening component, a conveying component and a feeding component. The length screening component, the conveying component and the feeding component are all fastened to the material rack. The feeding component is located below the length screening component, and the length screening component and the conveying component are located on both sides of the material rack.

[0008] By adopting the above technical solution, firstly, the material rack in the feeding mechanism is used as the main supporting component of the overall structure to support the length screening component, the transmission component and the feeding component, so as to ensure the stability of each component in the spatial position and facilitate the subsequent precision work. After the material is initially placed on the material rack, the length screening component starts to work, and the spline roller is driven by the screening motor to drive the screening belt to drive the spline roller to rotate, so as to accurately control the rolling and conveying of the material; at the same time, the length screening component cooperates with the screening wheel and the sliding plate, and the limiting protrusion is rotated and abutted with the sliding plate to accurately screen the materials of different lengths, so as to realize the automatic classification of materials of different lengths, avoid the materials of inconsistent lengths from entering the next process, and improve the screening accuracy. The materials screened by the length screening component are then transported by the transmission component arranged on the side of the material rack. The transmission component drives the transmission belt to operate through the transmission motor tightly connected to the material rack, and then realizes the continuous and efficient transmission of the materials through the linkage transmission of the transmission wheel and the driven wheel. The structure of the conveying component is simple and reliable, which effectively improves the conveying efficiency and transportation stability of materials, and avoids the leakage and mis-feeding that may be caused by manual conveying. Finally, the materials after screening and conveying automatically fall into the feeding component located directly below the length screening component. Since the feeding component is directly and firmly connected to the bottom of the material rack, the materials can naturally flow into the feeding box by gravity. The feeding box has a stable structure, and the connection with the material rack ensures that the materials are stable and reliable during the collection process. This structure makes the centralized storage and one-by-one transportation of materials more efficient, avoiding the disorder caused by human intervention. Therefore, through the fastening connection between the length screening component, the conveying component, the feeding component and the material rack, an automated closed-loop process from the initial placement of the material to the final one-by-one precise transportation is realized, which not only greatly improves the overall feeding efficiency and accuracy, but also reduces the labor intensity and error probability of the operator, meeting the efficiency and reliability requirements of automated welding production.

[0009] Furthermore, the length screening component includes a spline roller, a spline roller, a screening wheel, a sliding plate, a limit block, a screening belt, a screening hydraulic cylinder and a screening motor. The spline roller and the material rack are slidingly connected, the spline roller and the spline roller are drivingly connected, the spline roller and the limit block are rotatably connected, the screening belt and the spline roller are drivingly connected, the screening motor and the material rack are firmly connected, the screening motor and the screening belt are drivingly connected, the limit block and the material rack are firmly connected, the spline roller and the screening wheel are drivingly connected, the spline roller is provided with a limit protrusion, the limit protrusion and the sliding plate are rotatably abutted, the sliding plate and the material rack are slidingly connected, the screening hydraulic cylinder and the material rack are firmly connected, and the screening hydraulic cylinder and the sliding plate are drivingly connected.

[0010] By adopting the above technical solutions, first of all, the spline roller in the length screening component is slidably connected to the material rack, which is used for the initial bearing and rolling guidance of the materials placed thereon. The spline roller is rotationally abutted and cooperated with the sliding plate through the limiting protrusions provided on its surface, so that materials with different lengths produce different displacement effects during rolling, realizing the accurate identification and preliminary sorting of the length differences of the materials; the spline roller wheel is drivingly connected to the spline roller, which is used to drive the spline roller to rotate precisely, ensuring the stable and continuous forward rolling and conveying of the materials on the roller surface; at the same time, the spline roller wheel is rotationally connected to the limiting block, and the limiting block is fixedly connected to the material rack, making the rotation of the spline roller wheel more stable and precise, and ensuring the movement stability of the spline roller. The screening belt is drivingly connected to the spline roller wheel, which is used to accurately transmit the power of the screening motor to the spline roller wheel, and further drive the spline roller to rotate stably, ensuring the continuity and stability of the overall screening work; the screening motor is fixedly connected to the material rack, and the screening motor is drivingly connected to the spline roller wheel through the screening belt, providing a stable and sufficient power output, ensuring the accuracy and efficiency of the screening work, and avoiding the situation of screening failure or reduced accuracy caused by insufficient power. The screening wheel is drivingly connected to the spline roller, which is used for further precise screening during the process of the materials being driven by the roller. Through the precise rotation of the screening wheel, the materials that do not meet the length specifications are timely separated from the screening channel, ensuring that all the materials finally entering the next process meet the set length requirements, and effectively improving the consistency and quality guarantee of the welding production. The sliding plate is slidably connected to the material rack, and the screening position is timely adjusted through the precise sliding displacement of the sliding plate, and the precise measurement and grading of the material length are realized in cooperation with the limiting protrusions provided on the spline roller. The screening hydraulic cylinder is fixedly connected to the material rack, and at the same time, the screening hydraulic cylinder is drivingly connected to the sliding plate. The precise pushing action of the screening hydraulic cylinder ensures that the sliding plate adjusts the position in real time and accurately according to the material length, realizing the automatic dynamic control of the material length screening, and greatly improving the efficiency and accuracy of the length screening work. Through the precise cooperation and coordinated action of the above parts, the length screening component realizes the accurate and automatic sorting of the material length, improves the overall automation degree, material utilization efficiency and welding quality stability of the welding device, and at the same time effectively reduces the errors and labor intensity brought by manual intervention.

[0011] Further, the conveying component includes a conveying belt, a conveying wheel, a driven wheel and a conveying motor. The conveying motor is fixedly connected to the material rack, the conveying motor is drivingly connected to the conveying belt, the driving belt is drivingly connected to the conveying wheel, and the conveying belt is drivingly connected to the driven wheel.

[0012] By adopting the above technical solutions, first of all, the conveying motor is firmly connected to the material rack, providing a stable and reliable support foundation for the motor during operation, avoiding vibration or displacement during operation, and improving the conveying efficiency and stability. The conveying motor is connected to the conveying belt through belt drive, accurately transmitting the rotational power to the conveying belt, causing the conveying belt to produce continuous and stable linear motion, and pushing the screened materials to be conveyed forward smoothly; the conveying belt is then connected to the conveying wheel through belt drive, using the conveying wheel to realize the guiding, tensioning and continuous rotational support functions for the conveying belt, ensuring smooth operation of the belt and avoiding deviation or slipping. At the same time, the other end of the conveying belt is connected to the driven wheel through belt drive. The driven wheel, as a passive rotating component, cooperates with the conveying wheel to work together to effectively tension and support the conveying belt, ensuring that the belt always maintains appropriate tension and accurate running trajectory during the material conveying process. Through the close mechanical cooperation and coordinated work among the above parts, the conveying component realizes the automatic, continuous and efficient conveying of materials from length screening to the next process, not only improving the speed and stability of material conveying, but also effectively reducing the errors caused by jitter or displacement during the material transportation process, ensuring the smooth progress of the welding production process, and improving the overall equipment operation efficiency and reliability.

[0013] Furthermore, the loading component includes a loading box, a loading plate, a loading elastic member, a first electromagnetic block, a first magnetic member, a hinge rod, a lifting hydraulic cylinder and a fixing block. The loading box is firmly connected to the material rack, the loading plate is slidably connected to the loading box, the hinge rod is hinged to the loading plate, the hinge rod is slidably connected to the fixing block, the lifting hydraulic cylinder is firmly connected to the fixing block, the fixing block is firmly connected to the material rack, the lifting hydraulic cylinder is connected to the hinge rod through drive, the loading elastic member is firmly connected to the first magnetic member, the first magnetic member is firmly connected to the loading plate, the loading elastic member is firmly connected to the first electromagnetic block, the first electromagnetic block is firmly connected to the fixing block, and the first electromagnetic block and the first magnetic member are magnetically attracted for drive.

[0014] By adopting the above technical solutions,

[0015] Furthermore, the positioning and calibration mechanism includes a positioning conveyor belt, a positioning hydraulic cylinder, a positioning motor and a positioning push plate. The positioning motor is firmly connected to the material rack, the positioning motor is connected to the positioning conveyor belt through drive, the positioning hydraulic cylinder is firmly connected to the material rack, and the positioning hydraulic cylinder is connected to the positioning push plate through drive.

[0016] By adopting the above technical solution, first of all, the loading box is firmly connected to the material rack, providing a stable and reliable support foundation for the entire loading assembly, and at the same time playing the role of storing and screening the conveyed materials and preventing them from scattering; the loading plate is slidably connected to the loading box to achieve smooth sliding during the conveying of materials one by one, ensuring the orderly conveyance of materials; the articulated rod is hinged to the loading plate and slidably connected to the fixed block. After the lifting hydraulic cylinder is firmly connected to the fixed block, the lifting hydraulic cylinder drives the articulated rod to move precisely through the transmission connection with the articulated rod, thereby pushing the loading plate to perform controllable tilting and lifting actions, enabling the materials to accurately enter the next positioning process; the loading elastic member and the first magnetic member are firmly connected, and the first magnetic member is further firmly connected to the loading plate to form an elastic buffer mechanism for cushioning the impact during material conveyance and preventing the materials from being damaged or displaced; at the same time, the loading elastic member and the first electromagnetic block are firmly connected, and the first electromagnetic block is firmly connected to the fixed block and magnetically attracts and drives the first magnetic member to achieve precisely controllable magnetic force buffer adjustment, further ensuring the flexible transition and smooth conveyance of the materials during the conveying process. Through the precise cooperation and mechanical linkage of the above parts, the loading assembly realizes the automation, smoothness and precision of material conveyance, greatly improving the efficiency and reliability of accurately loading materials one by one, reducing the need for manual intervention and the damage rate of materials during the loading process, and effectively improving the automation level and quality guarantee ability of the entire welding production.

[0017] Further, the clamping mechanism includes a clamping frame, a clamping hydraulic cylinder, an upper clamping plate, a lower clamping plate, a moving motor, moving wheels, a sliding block and a clamping elastic member. The clamping hydraulic cylinder is firmly connected to the clamping frame, the clamping hydraulic cylinder is in transmission connection with the upper clamping plate, the lower clamping plate is firmly connected to the clamping frame, the sliding block is slidably connected to the upper clamping plate, the clamping elastic member is firmly connected to the sliding block, the upper clamping plate is slidably connected to the sliding block, the clamping elastic member is firmly connected to the upper clamping plate, the moving motor is firmly connected to the sliding block, and the moving motor is in transmission connection with the moving wheels.

[0018] By adopting the above technical solution, firstly, the clamping frame serves as the basic supporting structure of the entire clamping mechanism, and is used to stably connect the clamping hydraulic cylinder and the lower clamping plate to ensure the stability of the overall structure during the clamping action; the clamping hydraulic cylinder is tightly connected to the clamping frame, and is transmission-connected to the upper clamping plate, and the upper clamping plate is precisely lifted and lowered by hydraulic drive, forming a stable clamping space with the lower clamping plate fixed on the clamping frame, and firmly and reliably clamping the material; the sliding block is slidably connected to the upper clamping plate, ensuring that the upper clamping plate has a stable and controllable linear sliding in the vertical direction when clamping. The track is to avoid deflection or shaking during the clamping process; the clamping elastic part is tightly connected to the sliding block, and the clamping elastic part is also tightly connected to the upper clamping plate, so that the clamping action has good buffering performance, avoiding excessive clamping pressure to damage the material, and ensuring that the material always remains stable when clamped; the mobile motor is tightly connected to the sliding block and is connected to the mobile wheel transmission. The mobile motor drives the mobile wheel to achieve precise displacement adjustment of the sliding block, so that the clamping mechanism can finely adjust the clamping position in the horizontal direction, and accurately realize dynamic calibration and adjustment of the material welding position. Through the precise and coordinated mechanical linkage of the above parts, the clamping mechanism realizes the functions of precise positioning, efficient clamping and dynamic position fine-tuning of the material, improves the clamping stability and positioning accuracy during the welding process, ensures the reliability and consistency of the welding quality, and reduces the errors caused by manual adjustment, improving the automation and production efficiency of the entire welding device.

[0019] Furthermore, the welding actuator includes a welding gun, a movable slide rail, a rotating motor and a slide rail block. The welding gun is located at the four corners of the connection point. The welding gun and the slide rail block are rotationally connected, the slide rail block and the movable slide rail are slidingly connected, the rotating motor and the slide rail block are tightly connected, the rotating motor and the welding gun are transmission-connected, and the movable slide rail and the clamping frame are tightly connected.

[0020] By adopting the above technical solutions, first of all, the welding actuator is provided with multiple welding guns, which are respectively located at the four corners of the connection points of the materials to be welded, ensuring that the welding guns can perform efficient and precise welding operations synchronously or step by step; the welding guns are rotatably connected to the slide rail blocks, enabling the welding guns to rotate flexibly around the slide rail blocks, accurately adjusting the welding angles and orientations, and ensuring that all positions of the connection points can be precisely covered during welding operations; the slide rail blocks are slidably connected to the moving slide rails, and with the linear guiding function of the moving slide rails, the stable movement of the welding guns in the horizontal direction is realized, further expanding the working range of the welding guns and ensuring the comprehensive and precise coverage of the welding area; the rotating motor is fixedly connected to the slide rail blocks and is in transmission connection with the welding guns. The rotating motor drives the welding guns to achieve precise rotation and fine adjustment of the welding postures, ensuring that the angles and positions of the welding guns are accurate and stable during welding tasks, effectively reducing the risk of welding defects caused by the position deviation of the welding guns, and ensuring the reliability and consistency of the welding quality. Through the mechanical linkage and coordinated cooperation among the above parts, the welding actuator improves the accuracy, flexibility and stability of the welding process, effectively enhances the welding production efficiency and the automatic control level of the welding process, reduces human errors, and improves the consistency and overall quality of the welded products.

[0021] Furthermore, the strength self-checking mechanism includes a conductance positive electrode, a conductance negative electrode, a rotating block and a rotating motor. The conductance positive electrode, the conductance negative electrode and the rotating block are fixedly connected, the rotating motor and the slide rail block are fixedly connected, and the rotating motor is in transmission connection with the rotating block.

[0022] By adopting the above technical solutions, first of all, the strength self-checking mechanism is provided with a conductance positive electrode and a conductance negative electrode, both of which are fixedly connected to the rotating block, forming a stable and reliable conductive detection unit; after welding is completed, the conductance positive electrode and the conductance negative electrode are in contact with the welding part, and the conductive performance of the welding joint is accurately detected through the principle of resistance conduction to judge whether there are defects, slag inclusions, cracks or incomplete penetration areas inside the weld seam; the rotating block serves as the support and rotating carrier for the conductance positive electrode and the conductance negative electrode, and realizes stable rotation under the drive of the rotating motor, enabling the conductance positive electrode and the conductance negative electrode to be adjusted at multiple angles around the welding area; the rotating motor is fixedly connected to the slide rail block, forming a firm and reliable installation foundation, and is in transmission connection with the rotating block, providing precise and stable rotating power to ensure the orderly rotation detection of the rotating block carrying the conductance positive electrode and the conductance negative electrode. Through the mechanical linkage and cooperation of the above parts, the strength self-checking mechanism realizes the automatic, real-time and high-precision detection of the welding quality, effectively improves the reliability and consistency of the welding quality, reduces the risk of missed detection and misjudgment caused by manual detection, and further enhances the overall automation degree and product quality guarantee level of the welding device.

[0023] The welding method includes:

[0024] Step 1: Place the materials on the rack. The length screening component and the conveying component screen the materials according to different lengths, so that the materials are screened into the feeding component. Through the screening wheel and the driven wheel, when the lengths are different, the rolling abutting effect is lost, and the materials fall into the feeding component;

[0025] Step 2: The feeding plate in the feeding component, through the cooperation of the feeding elasticity, the first electromagnetic block, the first magnetic part and the hinge rod, makes the materials tilt on the feeding plate. At the same time, through the blocking effect of the feeding box on the materials, the materials enter the positioning and calibration mechanism one by one;

[0026] Step 3: The positioning push plate in the positioning and calibration mechanism positions the materials according to the required length welding position and provides positioning to the correct position and conveys them to the clamping mechanism;

[0027] Step 4: Fine-tune the welding position through the moving wheel in the clamping mechanism;

[0028] Step 5: Weld the welding position through the welding execution mechanism, and judge whether there are defects, slag inclusions, cracks, incomplete penetration and other areas through the conductance positive electrode and the conductance negative electrode in the strength self-inspection mechanism.

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

[0030] The length screening component is provided with a spline roller and a screening wheel. The limit protrusions arranged on the spline roller are rotationally abutted with the sliding plate to realize the precise mechanical differential rolling conveying and screening of materials with different lengths, ensuring that only the materials meeting the welding requirements accurately enter the next link; at the same time, the conveying component is matched with the conveying belt driven by the conveying motor, the conveying wheel and the driven wheel, so that the screened materials are efficiently and stably conveyed to the feeding component, avoiding the positioning deviation of the materials caused by vibration or sliding in the traditional conveying, and improving the welding positioning accuracy and automation degree.

[0031] The feeding component is driven by magnetic attraction between the first electromagnetic block and the first magnetic part. The feeding plate realizes precise tilting and lifting actions under the precise push of the lifting hydraulic cylinder through the hinge rod, and completes the flexible buffering and stable conveying of the materials under the cooperation of the feeding elastic part, so that the materials accurately enter the positioning and calibration mechanism one by one, overcoming the problems of positioning deviation or damage of the materials caused by the hard impact of the traditional feeding device, and realizing the precise control and flexible transition of the feeding process.

[0032] In the welding actuator, the welding gun is located at the four corners of the connection point to be welded. Through the cooperation of the moving slide rail, the slide rail block and the rotating motor, the welding gun can move freely and accurately in space and adjust its angle, ensuring comprehensive and accurate coverage of the welding area; The strength self-inspection mechanism is equipped with a conductance positive electrode and a conductance negative electrode. Driven by the rotating motor to rotate the rotating block, it realizes real-time automatic detection of conductivity after welding, quickly and accurately locates defects such as cracks and incomplete penetration inside the weld, effectively avoiding the uncertainty of manual detection and greatly improving the quality reliability and consistency of the welded products. Description of the Drawings

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the positioning and calibration mechanism of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the length screening component of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the conveying component of the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the feeding component of the present invention;

[0038] Figure 6 It is a schematic diagram of the structure of the positioning and calibration mechanism of the present invention;

[0039] Figure 7 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0040] Figure 8 It is a schematic diagram of the structure of the welding actuator of the present invention;

[0041] Figure 9 It is a schematic diagram of the structure of the strength self-inspection mechanism of the present invention.

[0042] In the figure: 1. Positioning and calibration mechanism; 11. Positioning conveyor belt; 12. Positioning hydraulic cylinder; 13. Positioning motor; 14. Positioning push plate; 2. Clamping mechanism; 21. Clamping frame; 22. Clamping hydraulic cylinder; 23. Upper clamping plate; 24. Lower clamping plate; 25. Moving motor; 26. Moving wheel; 27. Sliding block; 28. Clamping elastic member; 3. Welding execution mechanism; 31. Welding gun; 32. Moving slide rail; 33. Rotating motor; 34. Slide rail block; 4. Strength self-check mechanism; 41. Conductivity positive electrode; 42. Conductivity negative electrode; 43. Rotating block; 44. Rotating motor; 5. Loading mechanism; 51. Material rack; 52. Length screening assembly; 521. Spline roller; 5211. Limit protrusion; 522. Spline roller; 523. Screening wheel; 524. Sliding plate; 525. Limit block; 526. Screening belt; 527. Screening hydraulic cylinder; 528. Screening motor; 53. Conveying assembly; 531. Conveying belt; 532. Conveying wheel; 533. Driven wheel; 534. Conveying motor; 54. Loading assembly; 541. Loading box; 542. Loading plate; 543. Loading elastic member; 544. First electromagnet; 545. First magnetic member; 546. Hinge rod; 547. Lifting hydraulic cylinder; 548. Fixed block. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figure 1 - Figure 9 As shown in the figure, the present invention provides a welding device and method for pneumatic shutters with a function of self-checking welding strength, and the technical solution is as follows:

[0045] The welding device includes a positioning and calibration mechanism 1, a clamping mechanism 2, a welding execution mechanism 3, a strength self-check mechanism 4, and a loading mechanism 5. The positioning and calibration mechanism 1 and the loading mechanism 5 are fixedly connected, the positioning and calibration mechanism 1 and the clamping mechanism 2 are fixedly connected, and the welding execution mechanism 3 and the strength self-check mechanism 4 are fixedly connected.

[0046] By adopting the above technical solution, first, the feeding mechanism 5 precisely conveys the material to be welded from the initial state to the positioning and calibration mechanism 1. The positioning and calibration mechanism 1 can precisely calibrate the initial position and orientation of the material. Through the coordinated operation of the positioning conveyor belt 11, positioning hydraulic cylinder 12, positioning motor 13, and positioning push plate 14 inside it, it ensures that the welding area of the material precisely enters the preset welding position. The clamping mechanism 2 receives the material after positioning and calibration. Through the close cooperation of the clamping hydraulic cylinder 22, upper clamping plate 23, lower clamping plate 24, and clamping elastic member 28, the material is firmly clamped and positioned, avoiding deviation or shaking during the welding process. At the same time, the movement motor 25 drives the moving wheels 26 to finely adjust the welding position, so that the welding position reaches the optimal state. Subsequently, the welding gun 31 in the welding execution mechanism 3 realizes the flexible spatial movement of the welding gun 31 through the cooperation of the moving slide rail 32, slide rail block 34, and rotating motor 33, and precisely welds the welding points of the material, ensuring stable and reliable welding quality. Finally, the welding execution mechanism 3 is directly and firmly connected to the strength self-inspection mechanism 4. After the welding process is completed, the strength self-inspection mechanism 4 uses the conductance positive electrode 41 and conductance negative electrode 42 to form a conduction loop to identify quality hazards such as defects, slag inclusions, cracks, or incomplete penetration, avoiding unqualified products from flowing into the next process or the market.

[0047] Furthermore, the feeding mechanism 5 includes a material rack 51, a length screening component 52, a conveying component 53, and a feeding component 54. The length screening component 52, conveying component 53, and feeding component 54 are all firmly connected to the material rack 51. The feeding component 54 is located below the length screening component 52, and the length screening component 52 and conveying component 53 are located on both sides of the material rack 51.

[0048] By adopting the above technical solution, first of all, the material rack 51 in the feeding mechanism 5 serves as the overall structural main support component, which is used to support the length screening component 52, the conveying component 53 and the feeding component 54, ensuring the stability of each component in the spatial position and facilitating the subsequent precise work. After the material is initially placed on the material rack 51, the length screening component 52 starts to work. Through the rotational connection transmission between the spline roller 521 and the spline roller 522, the screening motor 528 is used to drive the screening belt 526 to drive the spline roller 522 to rotate, so as to accurately control the rolling and conveying of the material. At the same time, the length screening component 52 cooperates with the screening wheel 523 and the sliding plate 524. By the provided limit protrusion 5211 rotating and abutting against the sliding plate 524, the materials of different lengths are accurately screened, realizing the automatic classification of materials with different lengths, avoiding the materials with inconsistent lengths from entering the next process, and improving the screening accuracy. The materials screened by the length screening component 52 are then conveyed through the conveying component 53 provided on the side of the material rack 51. The conveying component 53 drives the conveying belt 531 to operate through the conveying motor 534 tightly connected to the material rack 51, and then through the linkage transmission of the conveying wheel 532 and the driven wheel 533, realizing the continuous and efficient transmission of the material. The structure of the conveying component 53 is simple and reliable, effectively improving the conveying efficiency and conveying stability of the material, and avoiding the phenomena of material leakage and misfeeding that may be caused by manual conveying. Finally, the screened and conveyed materials automatically fall into the feeding component 54 directly below the length screening component 52. Since the feeding component 54 is directly tightly connected to the lower part of the material rack 51, the material can naturally flow into the feeding box 541 by gravity. The structure of the feeding box 541 is stable, and the connection with the material rack 51 ensures the smooth and reliable collection of the material. This structure makes the centralized storage and one-by-one conveying of the material more efficient, avoiding the disorder caused by human intervention. Thus, through the tight connection of the length screening component 52, the conveying component 53, the feeding component 54 and the material rack 51, an automated closed-loop process from the initial placement of the material to the final one-by-one accurate conveying is realized, which not only greatly improves the overall feeding efficiency and accuracy, but also reduces the labor intensity and error probability of the operator, meeting the high-efficiency and reliability requirements of automated welding production.

[0049] Further, the length screening component 52 includes a spline roller 521, a spline roller 522, a screening wheel 523, a sliding plate 524, a limiting block 525, a screening belt 526, a screening hydraulic cylinder 527 and a screening motor 528. The spline roller 521 is slidably connected to the material rack 51. The spline roller 522 is drivingly connected to the spline roller 521. The spline roller 522 is rotatably connected to the limiting block 525. The screening belt 526 is drivingly connected to the spline roller 522. The screening motor 528 is fixedly connected to the material rack 51. The screening motor 528 is drivingly connected to the screening belt 526. The limiting block 525 is fixedly connected to the material rack 51. The spline roller 521 is drivingly connected to the screening wheel 523. A limiting protrusion 5211 is provided on the spline roller 521. The limiting protrusion 5211 is rotatably abutted against the sliding plate 524. The sliding plate 524 is slidably connected to the material rack 51. The screening hydraulic cylinder 527 is fixedly connected to the material rack 51. The screening hydraulic cylinder 527 is drivingly connected to the sliding plate 524.

[0050] By adopting the above technical solution, firstly, the spline roller 521 in the length screening component 52 is slidably connected with the material rack 51, and is used for initially carrying and rolling guiding the material placed thereon. The spline roller 521 is rotatably engaged with the sliding plate 524 through the limiting protrusion 5211 provided on its surface, so that materials of different lengths produce different displacement effects when rolling, thereby realizing accurate identification and preliminary sorting of material length differences; the spline roller 522 is transmission-connected with the spline roller 521, and is used for driving the spline roller 521 to rotate accurately, thereby ensuring that the material on the roller surface is stably and continuously rolled forward for conveying; at the same time, the spline roller 522 is rotationally connected with the limiting block 525, and the limiting block 525 is tightly connected to the material rack 51, so that the rotation of the spline roller 522 is more stable and accurate, thereby ensuring the movement stability of the spline roller 521. The screening belt 526 is connected to the spline roller 522 for transmitting the power of the screening motor 528 to the spline roller 522 accurately, and further drives the spline roller 521 to rotate stably, so as to ensure the continuity and stability of the overall screening work; the screening motor 528 is tightly connected to the material rack 51, and the screening motor 528 is connected to the spline roller 522 through the screening belt 526, so as to provide a stable and sufficient power output, ensure the accuracy and efficiency of the screening work, and avoid the occurrence of screening failure or reduced accuracy due to insufficient power. The screening wheel 523 is connected to the spline roller 521 for further accurate screening in the process of the material being driven by the roller. The precise rotation of the screening wheel 523 separates the material that does not meet the length specification from the screening channel in time, so as to ensure that all the materials entering the next process meet the set length requirements, and effectively improve the consistency and quality assurance of welding production. The sliding plate 524 is slidably connected to the material rack 51, and the screening position is adjusted in time through the precise sliding displacement of the sliding plate 524, and the limiting protrusion 5211 provided on the spline roller 521 is used to achieve precise measurement and classification of the material length. The screening hydraulic cylinder 527 is tightly connected to the material rack 51, and the screening hydraulic cylinder 527 is transmission-connected to the sliding plate 524. The precise pushing action of the screening hydraulic cylinder 527 ensures that the sliding plate 524 can accurately adjust its position in real time according to the material length, and realizes the automatic dynamic control of the material length screening, which greatly improves the efficiency and accuracy of the length screening work. Through the precise coordination and coordinated action of the above parts, the length screening component 52 realizes the accurate and automatic sorting of the material length, improves the overall automation degree of the welding device, the material utilization efficiency and the stability of the welding quality, and also effectively reduces the errors and labor intensity caused by manual intervention.

[0051] Furthermore, the conveying assembly 53 includes a conveying belt 531, a conveying wheel 532, a driven wheel 533 and a conveying motor 534. The conveying motor 534 is fastened to the material rack 51, the conveying motor 534 is transmission-connected to the conveying belt 531, the transmission belt is transmission-connected to the conveying wheel 532, and the conveying belt 531 is transmission-connected to the driven wheel 533.

[0052] By adopting the above technical solution, first, the conveying motor 534 is fixedly connected to the rack 51, providing a stable and reliable support foundation for the motor during operation, avoiding vibration or displacement during work, and improving the conveying efficiency and stability. The conveying motor 534 is drivingly connected to the conveying belt 531, accurately transmitting the rotational power to the conveying belt 531, causing the conveying belt 531 to generate continuous and stable linear motion, and pushing the screened materials to be conveyed smoothly forward; the conveying belt 531 is then drivingly connected to the conveying wheel 532, using the conveying wheel 532 to guide, tension, and continuously rotate and support the conveying belt 531, ensuring smooth belt operation and avoiding deviation or slipping. At the same time, the other end of the conveying belt 531 is drivingly connected to the driven wheel 533. The driven wheel 533, as a passive rotating component, cooperates with the conveying wheel 532 to work together to effectively tension and support the conveying belt 531, ensuring that the belt always maintains appropriate tension and an accurate running trajectory during material conveying. Through the close mechanical cooperation and coordinated work among the above parts, the conveying assembly 53 realizes the automatic, continuous, and efficient conveying of materials from length screening to the next process, not only improving the speed and stability of material conveying, but also effectively reducing the errors caused by jitter or displacement during material transportation, ensuring the smooth progress of the welding production process, and improving the overall equipment operation efficiency and reliability.

[0053] Furthermore, the loading component 54 includes a loading box 541, a loading plate 542, a loading elastic member 543, a first electromagnetic block 544, a first magnetic member 545, a hinged rod 546, a lifting hydraulic cylinder 547, and a fixing block 548. The loading box 541 is fixedly connected to the rack 51, the loading plate 542 is slidably connected to the loading box 541, the hinged rod 546 is hinged to the loading plate 542, the hinged rod 546 is slidably connected to the fixing block 548, the lifting hydraulic cylinder 547 is fixedly connected to the fixing block, the fixing block 548 is fixedly connected to the rack 51, the lifting hydraulic cylinder 547 is drivingly connected to the hinged rod 546, the loading elastic member 543 is fixedly connected to the first magnetic member 545, the first magnetic member 545 is fixedly connected to the loading plate 542, the loading elastic member 543 is fixedly connected to the first electromagnetic block 544, the first electromagnetic block 544 is fixedly connected to the fixing block 548, and the first electromagnetic block 544 and the first magnetic member 545 are magnetically attracted and drive each other.

[0054] By adopting the above technical solution,

[0055] Furthermore, the positioning and calibration mechanism 1 includes a positioning conveyor belt 11, a positioning hydraulic cylinder 12, a positioning motor 13, and a positioning push plate 14. The positioning motor 13 is fixedly connected to the rack 51, the positioning motor 13 is drivingly connected to the positioning conveyor belt 11, the positioning hydraulic cylinder 12 is fixedly connected to the rack 51, and the positioning hydraulic cylinder 12 is drivingly connected to the positioning push plate 14.

[0056] By adopting the above technical solution, first of all, the loading box 541 is firmly connected to the material rack 51, providing a stable and reliable support foundation for the entire loading assembly 54, and at the same time playing a role in storing the screened and conveyed materials and preventing them from scattering; the loading plate 542 is slidably connected to the loading box 541 to achieve smooth sliding during the one-by-one conveying of materials and ensure the orderly conveyance of materials; the articulated rod 546 is articulated with the loading plate 542 and slidably connected to the fixed block 548. After the lifting hydraulic cylinder 547 is firmly connected to the fixed block 548, the lifting hydraulic cylinder 547 drives the articulated rod 546 to move precisely through the transmission connection with the articulated rod 546, thereby pushing the loading plate 542 to perform controllable tilting and lifting actions, enabling the materials to accurately enter the next positioning process; the loading elastic member 543 and the first magnetic member 545 are firmly connected, and the first magnetic member 545 is further firmly connected to the loading plate 542 to form an elastic buffer mechanism for cushioning the impact during material conveyance and preventing the materials from being damaged or displaced; at the same time, the loading elastic member 543 and the first electromagnetic block 544 are firmly connected, and the first electromagnetic block 544 is firmly connected to the fixed block 548 and magnetically attracts and drives the first magnetic member 545 to achieve precisely controllable magnetic force buffer adjustment, further ensuring the flexible transition and smooth conveyance of the materials during the conveying process. Through the precise cooperation and mechanical linkage of the above various parts, the loading assembly 54 realizes the automation, smoothness and precision of material conveyance, greatly improving the efficiency and reliability of precise one-by-one material loading, reducing the need for manual intervention and the damage rate of materials during the loading process, and effectively improving the automation level and quality guarantee ability of the entire welding production.

[0057] Furthermore, the clamping mechanism 2 includes a clamping frame 21, a clamping hydraulic cylinder 22, an upper clamping plate 23, a lower clamping plate 24, a moving motor 25, moving wheels 26, a sliding block 27 and a clamping elastic member 28. The clamping hydraulic cylinder 22 is firmly connected to the clamping frame 21, the clamping hydraulic cylinder 22 is in transmission connection with the upper clamping plate 23, the lower clamping plate 24 is firmly connected to the clamping frame 21, the sliding block 27 is slidably connected to the upper clamping plate 23, the clamping elastic member 28 is firmly connected to the sliding block 27, the upper clamping plate 23 is slidably connected to the sliding block 27, the clamping elastic member 28 is firmly connected to the upper clamping plate 23, the moving motor 25 is firmly connected to the sliding block 27, and the moving motor 25 is in transmission connection with the moving wheels 26.

[0058] By adopting the above technical solution, firstly, the clamping frame 21 serves as the basic supporting structure of the entire clamping mechanism 2, and is used to stably connect the clamping hydraulic cylinder 22 and the lower clamping plate 24, to ensure the stability of the overall structure during the clamping action; the clamping hydraulic cylinder 22 is tightly connected to the clamping frame 21, and is transmission-connected to the upper clamping plate 23, and the upper clamping plate 23 is accurately lifted and lowered by hydraulic drive, forming a stable clamping space with the lower clamping plate 24 fixed on the clamping frame 21, and firmly and reliably clamping the material; the sliding block 27 is slidably connected to the upper clamping plate 23, to ensure that the upper clamping plate 23 has a stable and controllable straight line when clamping in the vertical direction Sliding track, avoid deflection or shaking during the clamping process; the clamping elastic member 28 is tightly connected to the sliding block 27, and the clamping elastic member 28 is also tightly connected to the upper clamping plate 23, so that the clamping action has good buffering performance, avoids excessive clamping pressure to damage the material, and ensures that the material is always in a stable state when clamped; the moving motor 25 is tightly connected to the sliding block 27, and is connected to the moving wheel 26 by transmission. The moving motor 25 drives the moving wheel 26 to achieve precise displacement adjustment of the sliding block 27, so as to achieve fine adjustment of the clamping position of the clamping mechanism 2 in the horizontal direction, and accurately realize dynamic calibration and adjustment of the welding position of the material. Through the precise and coordinated mechanical linkage of the above parts, the clamping mechanism 2 realizes the functions of precise positioning, efficient clamping and dynamic position fine-tuning of the material, improves the clamping stability and positioning accuracy during the welding process, ensures the reliability and consistency of the welding quality, and reduces the error caused by manual adjustment, and improves the automation and production efficiency of the entire welding device.

[0059] Furthermore, the welding actuator 3 includes a welding gun 31, a movable slide rail 32, a rotating motor 33 and a slide rail block 34. The welding gun 31 is located at the four corners of the connection point. The welding gun 31 and the slide rail block 34 are rotationally connected, the slide rail block 34 and the movable slide rail 32 are slidingly connected, the rotating motor 33 and the slide rail block 34 are fastened, the rotating motor 33 and the welding gun 31 are transmission-connected, and the movable slide rail 32 and the clamping frame 21 are fastened.

[0060] By adopting the above technical solutions, firstly, the welding actuator 3 is provided with a plurality of welding guns 31, which are respectively located at the four corners of the connection points of the materials to be welded, ensuring that the welding guns 31 can perform efficient and precise welding operations synchronously or step by step; the welding guns 31 are rotatably connected to the slide rail blocks 34, enabling the welding guns 31 to flexibly rotate around the slide rail blocks 34, accurately adjusting the welding angle and orientation, and ensuring that all positions of the connection points can be precisely covered during the welding operation; the slide rail blocks 34 are slidably connected to the moving slide rails 32, and by means of the linear guiding function of the moving slide rails 32, the stable movement of the welding guns 31 in the horizontal direction is realized, further expanding the working range of the welding guns 31 and ensuring the comprehensive and precise coverage of the welding area; the rotation motor 33 is fixedly connected to the slide rail block 34 and is in transmission connection with the welding gun 31. The rotation motor 33 drives the welding gun 31 to achieve precise rotation and fine adjustment of the welding posture, ensuring that the angle and position of the welding gun 31 are accurate and stable during the welding task, effectively reducing the risk of welding defects caused by the position deviation of the welding gun 31, and ensuring the reliability and consistency of the welding quality. Through the mechanical linkage and coordinated cooperation among the above parts, the welding actuator 3 improves the accuracy, flexibility and stability of the welding process, effectively improves the welding production efficiency and the automatic control level of the welding process, reduces human errors, and improves the consistency and overall quality of the welded products.

[0061] Furthermore, the strength self-checking mechanism 4 includes a conductance positive electrode 41, a conductance negative electrode 42, a rotating block 43 and a rotating motor 44. The conductance positive electrode 41, the conductance negative electrode 42 and the rotating block 43 are fixedly connected, and the rotating motor 44 is fixedly connected to the slide rail block 34 and is in transmission connection with the rotating block 43.

[0062] By adopting the above technical solutions, firstly, the strength self-checking mechanism 4 is provided with a conductance positive electrode 41 and a conductance negative electrode 42, both of which are fixedly connected to the rotating block 43, forming a stable and reliable conductive detection unit; after the welding is completed, the conductance positive electrode 41 and the conductance negative electrode 42 are in contact with the welding part, and the conductive performance of the welding joint is accurately detected through the principle of resistance conduction to judge whether there are defects, slag inclusions, cracks or non-welded-through areas inside the weld; the rotating block 43 serves as the support and rotating carrier of the conductance positive electrode 41 and the conductance negative electrode 42, and realizes stable rotation under the drive of the rotating motor 44, enabling the conductance positive electrode 41 and the conductance negative electrode 42 to be adjusted at multiple angles around the welding area; the rotating motor 44 is fixedly connected to the slide rail block 34, forming a firm and reliable installation foundation, and is in transmission connection with the rotating block 43, providing precise and stable rotating power to ensure that the rotating block 43 drives the conductance positive electrode 41 and the conductance negative electrode 42 to rotate and detect in an orderly manner. Through the mechanical linkage and cooperation of the above parts, the strength self-checking mechanism 4 realizes the automatic, real-time and high-precision detection of the welding quality, effectively improves the reliability and consistency of the welding quality, reduces the risk of missed detection and misjudgment caused by manual detection, and further improves the overall automation degree and product quality guarantee level of the welding device.

[0063] The welding method includes:

[0064] Step 1: Place the materials on the material rack 51. The length screening component 52 and the conveying component 53 screen the materials by different lengths, so as to screen and enter the feeding component 54. When the lengths are different, the screening wheel 523 and the driven wheel 533 lose the function of rolling contact and fall into the feeding component 54.

[0065] Step 2: The feeding plate 542 in the feeding component 54, through the cooperation of the feeding elastic member, the first electromagnetic block 544, the first magnetic member 545 and the hinge rod 546, makes the materials tilt on the feeding plate 542. At the same time, through the blocking effect of the feeding box 541 on the materials, the materials enter the positioning and calibration mechanism 1 one by one.

[0066] Step 3: Through the positioning push plate 14 in the positioning and calibration mechanism 1, the materials are positioned to the correct position according to the required length and welding position and conveyed to the clamping mechanism 2.

[0067] Step 4: Fine-tune the welding position through the moving wheel 26 in the clamping mechanism 2.

[0068] Step 5: Weld the welding position through the welding execution mechanism 3, and judge whether there are defects, slag inclusions, cracks, incomplete penetration and other areas through the conductance positive electrode 41 and the conductance negative electrode 42 in the strength self-inspection mechanism 4.

[0069] The working principle of the present invention:

[0070] The length screening component 52 is provided with a spline roller 521 and a screening wheel 523. The limit protrusion 5211 provided on the spline roller 521 is in rotational contact with the sliding plate 524, realizing precise mechanical differential rolling conveying and screening of materials with different lengths, ensuring that only the materials meeting the welding requirements accurately enter the next link. At the same time, the conveying component 53, through the cooperation of the conveying belt 531 driven by the conveying motor 534, the conveying wheel 532 and the driven wheel 533, efficiently and stably conveys the screened materials to the feeding component 54, avoiding the positioning deviation of materials caused by vibration or slippage in traditional conveying, and improving the welding positioning accuracy and automation degree.

[0071] The feeding component 54 is driven by magnetic attraction between the first electromagnetic block 544 and the first magnetic member 545. The feeding plate 542 realizes precise tilting and lifting actions under the precise push of the hinge rod 546 by the lifting hydraulic cylinder 547, and with the cooperation of the feeding elastic member 543, completes the flexible buffering and stable conveying of the materials, so that the materials accurately enter the positioning and calibration mechanism 1 one by one, overcoming the problems of positioning deviation or damage of materials caused by hard impact of traditional feeding devices, and realizing precise control and flexible transition in the feeding process.

[0072] In the welding actuator 3, the welding gun 31 is located at the four corners of the connection point to be welded. By cooperating with the moving slide rail 32, the slide rail block 34 and the rotating motor 33, the welding gun 31 can move freely and accurately in space and adjust the angle, ensuring a comprehensive and accurate coverage of the welding area. The strength self-inspection mechanism 4 is provided with a conductance positive electrode 41 and a conductance negative electrode 42. By driving the rotating block 43 to rotate with the aid of the rotating motor 44, the real-time automatic detection of conductivity after welding is realized, and defects such as cracks and incomplete penetration inside the weld seam can be quickly and accurately located, effectively avoiding the uncertainty of manual detection and greatly improving the quality reliability and consistency of the welded products.

[0073] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

Claims

1. A pneumatic shutter welding device with a welding strength self-checking function, characterized in that: The welding device comprises a positioning and calibration mechanism (1), a clamping mechanism (2), a welding actuator (3), a strength self-testing mechanism (4) and a feeding mechanism (5); the positioning and calibration mechanism (1) and the feeding mechanism (5) are tightly connected, the positioning and calibration mechanism (1) and the clamping mechanism (2) are tightly connected, and the welding actuator (3) and the strength self-testing mechanism (4) are tightly connected.

2. A pneumatic shutter welding device with welding strength self-checking function according to claim 1, characterized in that: The feeding mechanism (5) comprises a material rack (51), a length screening component (52), a conveying component (53) and a feeding component (54); the length screening component (52), the conveying component (53) and the feeding component (54) are all fastened to the material rack (51); the feeding component (54) is located below the length screening component (52); and the length screening component (52) and the conveying component (53) are located on both sides of the material rack (51).

3. A pneumatic shutter welding device with welding strength self-checking function according to claim 2, characterized in that: The length screening component (52) comprises a spline roller (521), a spline roller (522), a screening wheel (523), a sliding plate (524), a stopper (525), a screening belt (526), ​​a screening hydraulic cylinder (527) and a screening motor (528); the spline roller (521) and the material rack (51) are slidably connected; the spline roller (522) and the spline roller (521) are transmission-connected; the spline roller (522) and the stopper (525) are rotationally connected; the screening belt (526) and the spline roller (522) are transmission-connected; the screening motor (528) and the material rack (51) are rotationally connected. The screening motor (528) and the screening belt (526) are connected in a transmission manner. The limit block (525) and the material rack (51) are connected in a transmission manner. The spline roller (521) and the screening wheel (523) are connected in a transmission manner. The spline roller (521) is provided with a limit protrusion (5211). The limit protrusion (5211) and the sliding plate (524) are in rotational contact. The sliding plate (524) and the material rack (51) are connected in a sliding manner. The screening hydraulic cylinder (527) and the material rack (51) are connected in a transmission manner. The screening hydraulic cylinder (527) and the sliding plate (524) are connected in a transmission manner.

4. A pneumatic shutter welding device with welding strength self-checking function according to claim 3, characterized in that: The transmission assembly (53) comprises a transmission belt (531), a transmission wheel (532), a driven wheel (533) and a transmission motor (534); the transmission motor (534) and the material rack (51) are tightly connected; the transmission motor (534) and the transmission belt (531) are transmission connected; the transmission belt and the transmission wheel (532) are transmission connected; and the transmission belt (531) and the driven wheel (533) are transmission connected.

5. A pneumatic shutter welding device with welding strength self-checking function according to claim 4, characterized in that: The feeding assembly (54) comprises a feeding box (541), a feeding plate (542), a feeding elastic member (543), a first electromagnetic block (544), a first magnetic member (545), a hinged rod (546), a lifting hydraulic cylinder (547) and a fixed block (548); the feeding box (541) and the material rack (51) are fixedly connected; the feeding plate (542) and the feeding box (541) are slidably connected; the hinged rod (546) and the feeding plate (542) are hinged; the hinged rod (546) and the fixed block (548) are slidably connected; the lifting hydraulic cylinder (547) ) is tightly connected to the fixed block, the fixed block (548) is tightly connected to the material rack (51), the lifting hydraulic cylinder (547) and the hinge rod (546) are transmission connected, the loading elastic member (543) and the first magnetic member (545) are tightly connected, the first magnetic member (545) and the loading plate (542) are tightly connected, the loading elastic member (543) and the first electromagnetic block (544) are tightly connected, the first electromagnetic block (544) and the fixed block (548) are tightly connected, and the first electromagnetic block (544) and the first magnetic member (545) are magnetically attracted to each other for transmission.

6. A pneumatic shutter welding device with welding strength self-checking function according to claim 5, characterized in that: The positioning and calibration mechanism (1) comprises a positioning conveyor belt (11), a positioning hydraulic cylinder (12), a positioning motor (13) and a positioning push plate (14); the positioning motor (13) and a material rack (51) are tightly connected; the positioning motor (13) and the positioning conveyor belt (11) are transmission-connected; the positioning hydraulic cylinder (12) and the material rack (51) are tightly connected; and the positioning hydraulic cylinder (12) and the positioning push plate (14) are transmission-connected.

7. A pneumatic shutter welding device with welding strength self-checking function according to claim 6, characterized in that: The clamping mechanism (2) comprises a clamping frame (21), a clamping hydraulic cylinder (22), an upper clamping plate (23), a lower clamping plate (24), a moving motor (25), a moving wheel (26), a sliding block (27) and a clamping elastic member (28); the clamping hydraulic cylinder (22) and the clamping frame (21) are fixedly connected; the clamping hydraulic cylinder (22) and the upper clamping plate (23) are transmission-connected; the lower clamping plate (24) and the clamping frame (21) are fixedly connected; the sliding block (27) and the upper clamping plate (23) are slidingly connected; the clamping elastic member (28) and the sliding block (27) are fixedly connected; the upper clamping plate (23) and the sliding block (27) are slidingly connected; the clamping elastic member (28) and the upper clamping plate (23) are fixedly connected; the moving motor (25) and the sliding block (27) are fixedly connected; and the moving motor (25) and the moving wheel (26) are transmission-connected.

8. A pneumatic shutter welding device with welding strength self-checking function according to claim 7, characterized in that: The welding actuator (3) comprises a welding gun (31), a movable slide rail (32), a rotating motor (33) and a slide rail block (34); the welding gun (31) is located at the four corners of the connection point; the welding gun (31) and the slide rail block (34) are rotationally connected; the slide rail block (34) and the movable slide rail (32) are slidingly connected; the rotating motor (33) and the slide rail block (34) are tightly connected; the rotating motor (33) and the welding gun (31) are transmission-connected; and the movable slide rail (32) and the clamping frame (21) are tightly connected.

9. A pneumatic shutter welding device with welding strength self-checking function according to claim 8, characterized in that: The strength self-testing mechanism (4) comprises a conductive positive electrode (41), a conductive negative electrode (42), a rotating block (43) and a rotating motor (44); the conductive positive electrode (41), the conductive negative electrode (42) and the rotating block (43) are tightly connected; the rotating motor (44) and the slide block (34) are tightly connected; and the rotating motor (44) and the rotating block (43) are transmission-connected.

10. A welding method for a pneumatic shutter welding device with a welding strength self-checking function according to claim 9, characterized in that: The welding method comprises: Step 1: Put the material on the material rack (51), screen the material according to different lengths through the length screening component (52) and the conveying component (53), and then enter the feeding component (54), and make the materials with different lengths lose the rolling contact effect through the screening wheel (523) and the driven wheel (533) and fall into the feeding component (54); Step 2: The loading plate (542) in the loading assembly (54) is used to make the material tilt on the loading plate (542) through the cooperation of the loading elasticity, the first electromagnetic block (544), the first magnetic member (545) and the hinge rod (546), and at the same time, the loading box (541) resists the material and allows the material to enter the positioning and calibration mechanism (1) one by one; Step 3: The material is positioned at the correct position according to the required length welding position by using the positioning push plate (14) in the positioning calibration mechanism (1) and is then transferred to the clamping mechanism (2); Step 4: fine-tuning the welding position by means of the moving wheel (26) in the clamping mechanism (2); Step 5: Welding is performed at the welding position by means of the welding actuator (3), and the positive conductivity electrode (41) and the negative conductivity electrode (42) in the strength self-inspection mechanism (4) are used to determine whether there are defects, slag inclusions, cracks, incomplete penetration and other areas.

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