A welding device and method with weld strength self-checking function for pneumatic louver

Abstract

The application discloses a welding device and method with welding strength self-checking function for pneumatic shutter, relates to the technical field of welding device, and comprises a positioning and calibration mechanism, a clamping mechanism, a welding execution mechanism, a strength self-checking mechanism and a feeding mechanism. The positioning and calibration mechanism and the feeding mechanism are fastened and connected, the positioning and calibration mechanism and the clamping mechanism are fastened and connected, and the welding execution mechanism and the strength self-checking mechanism are fastened and connected. The feeding mechanism accurately conveys the material to be welded from an initial state to the positioning and calibration mechanism, the positioning and calibration mechanism can calibrate the initial position and direction of the material, the clamping mechanism firmly clamps and positions the material, avoids deviation or shaking during the welding process, finely adjusts the welding position, and the strength self-checking mechanism forms a conduction loop by using an electric conduction positive electrode and an electric conduction negative electrode, and identifies quality hidden dangers such as defects, slag inclusion, cracks and incomplete penetration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding device, in particular to a pneumatic shutter welding device with welding strength self-checking function and method. BACKGROUND

[0002] At present, with the continuous progress of industrial automation technology, welding technology gradually develops in the direction of automation, high precision and high reliability in the field of mechanical manufacturing. Welding technology is widely used in the fields of automobile, aerospace, shipbuilding, construction engineering, etc. Especially for the welding needs of multi-specification and multi-size parts, accurate, efficient and intelligent welding equipment has become the future development trend of welding technology, and automated and intelligent welding production equipment is gradually replacing traditional manual welding methods.

[0003] In the prior art, most welding equipment has realized automatic conveying and welding functions, but there are still deficiencies in the preliminary screening and accurate feeding of materials. The traditional screening device mostly uses manual or simple mechanical conveying mode, and the existing feeding device is generally a hard mechanical transmission structure.

[0004] Firstly, different length specifications of materials are not obviously distinguished, which easily leads to uneven welding quality; secondly, there is a lack of buffering measures in the conveying process, which easily causes material positioning error or even damage; thirdly, the current welding execution mechanism mostly adopts a fixed position welding gun structure, and the welding gun lacks flexible and controllable space movement ability, which is difficult to accurately adapt to different spatial orientations of welding materials; finally, the current clamping structure is fixed and does not have an automatic fine-tuning function, which is difficult to realize dynamic and accurate positioning of materials during actual welding, and is prone to cause unstable clamping, thereby increasing welding deviation, and the existing welding quality self-checking means mostly relies on manual visual observation or post-sampling detection, which has the problems of long time consumption, low accuracy, easy to miss detection and misjudgment, and cannot effectively detect internal defects and quality hazards generated during the welding process. Therefore, the technical personnel in the field provide a pneumatic shutter welding device with welding strength self-checking function and method to solve the problems raised in the above background. SUMMARY

[0005] The purpose of the present application is to provide a pneumatic shutter welding device with welding strength self-checking function and method to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] The welding device comprises a positioning calibration mechanism, a clamping mechanism, a welding execution mechanism, a strength self-checking mechanism and a feeding mechanism, the positioning calibration mechanism and the feeding mechanism are tightly connected, the positioning calibration mechanism and the clamping mechanism are tightly connected, and the welding execution mechanism and the strength self-checking mechanism are tightly connected.

[0008] By adopting the above technical scheme, first, the feeding mechanism accurately transmits the material to be welded from the initial state to the positioning and calibration mechanism. The positioning and calibration mechanism can precisely calibrate the initial position and direction of the material, and through the cooperative work of the internal positioning conveyor belt, positioning hydraulic cylinder, positioning motor and positioning push plate, it ensures that the welding area of the material accurately enters the preset welding position. The clamping mechanism receives the material after positioning and calibration, and through the cooperation of the clamping hydraulic cylinder, the upper clamping plate, the lower clamping plate and the clamping elastic element, the material is firmly clamped and positioned, avoiding deviation 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 best state. Subsequently, the welding gun in the welding execution mechanism realizes flexible movement in space under the cooperation of the moving slide rail, the slide rail block and the rotating motor, accurately welds the welding point of the material, and ensures the stable and reliable welding quality. Finally, the welding execution mechanism is directly and tightly connected with the strength self-checking mechanism. After the welding process is completed, the strength self-checking mechanism forms a conduction loop with the positive and negative electrodes to identify defects, slag inclusion, cracks or incomplete penetration, etc. Quality problems to avoid unqualified products flowing into the next process or market.

[0009] Further, the feeding mechanism includes a rack, a length screening assembly, a conveying assembly and a feeding assembly. The length screening assembly, the conveying assembly and the feeding assembly are tightly connected with the rack. The feeding assembly is located below the length screening assembly, and the length screening assembly and the conveying assembly are located on both sides of the rack.

[0010] By adopting the above technical scheme, firstly, the rack in the feeding mechanism serves as a whole structure main body support component for supporting the length screening assembly, the conveying assembly and the feeding assembly, ensuring the stability of each component in the spatial position and facilitating the subsequent precise work. After the material is initially placed in the rack, the length screening assembly starts to work, and through the rotating connection transmission of the spline roller shaft and the spline roller, the spline roller is driven to rotate by the screening motor, so as to accurately control the rolling and conveying of the material; at the same time, the length screening assembly cooperates with the screening wheel and the sliding plate, and through the rotating abutment of the limiting protrusion and the sliding plate, the different lengths of the material are accurately screened, the automatic classification of the materials with different lengths is realized, the materials with different lengths are avoided from entering the next process, and the screening accuracy is improved. After the material is screened by the length screening assembly, the material is conveyed by the conveying assembly arranged at the side of the rack. The conveying assembly is driven to rotate by the conveying motor fastened to the rack, and through the linkage transmission of the conveying wheel and the driven wheel, the continuous and efficient transmission of the material is realized. The conveying assembly has a simple and reliable structure, effectively improves the conveying efficiency and conveying stability of the material, and avoids the leakage and misplacement of the material caused by manual conveying. Finally, the screened and conveyed material automatically falls into the feeding assembly located directly below the length screening assembly. Since the feeding assembly is directly fastened to the lower side of the rack, the material can flow into the feeding box naturally by gravity, and the stable structure of the feeding box ensures the stable and reliable collection of the material. The structure makes the concentrated storage and one-by-one conveying of the material more efficient, and avoids the disorder caused by human intervention. Therefore, through the fastening connection of the length screening assembly, the conveying assembly, the feeding assembly and the rack, an automatic 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, and meets the efficiency and reliability requirements of automatic welding production.

[0011] Further, the length screening assembly includes a spline roller shaft, a spline roller, a screening wheel, a sliding plate, a limiting block, a screening belt, a screening hydraulic cylinder and a screening motor, the spline roller shaft is slidingly connected with the rack, the spline roller is in transmission connection with the spline roller shaft, the spline roller is in rotating connection with the limiting block, the screening belt is in transmission connection with the spline roller, the screening motor is fastened to the rack, the screening motor is in transmission connection with the screening belt, the limiting block is fastened to the rack, the spline roller shaft is in transmission connection with the screening wheel, the limiting protrusion is arranged on the spline roller shaft, the limiting protrusion is in rotating abutment with the sliding plate, the sliding plate is slidingly connected with the rack, the screening hydraulic cylinder is fastened to the rack, and the screening hydraulic cylinder is in transmission connection with the sliding plate.

[0012] By adopting the above technical scheme, firstly, the spline roller in the length screening assembly is in sliding connection with the rack, which is used for initial bearing and rolling guidance of the material placed thereon, the spline roller is in rotary abutting connection with the sliding plate through the limiting protrusions arranged on the surface thereof, different displacements are generated for the materials with different lengths when rolling, and accurate identification and preliminary sorting of the length difference of the materials are realized; the spline roller is in transmission connection with the spline roller, which is used for driving the spline roller to rotate accurately, and ensures that the materials on the surface of the roller are stably and continuously conveyed forward; at the same time, the spline roller is in rotary connection with the limiting block, and the limiting block is in fastening connection with the rack, so that the spline roller rotates more stably and accurately, and the motion stability of the spline roller is ensured. The screening belt is in transmission connection with the spline roller, which is used for accurately transmitting the power of the screening motor to the spline roller, and further driving the spline roller to rotate stably, and ensuring the continuity and stability of the overall screening work; the screening motor is in fastening connection with the rack, and the screening motor is in transmission connection with the spline roller through the screening belt, so as to provide stable and sufficient power output, ensure the accuracy and efficiency of the screening work, and avoid the screening failure or accuracy reduction caused by insufficient power. The screening wheel is in transmission connection with the spline roller, which is used for further accurate screening during the material is driven by the roller, and the materials not meeting the length specifications are separated from the screening channel in time through the accurate rotation of the screening wheel, so as to ensure that all the materials entering the next process meet the set length requirements, and effectively improve the consistency and quality of the welding production. The sliding plate is in sliding connection with the rack, the screening position is adjusted in time through the accurate sliding displacement of the sliding plate, the accurate measurement and grading of the length of the material are realized by cooperating with the limiting protrusions arranged on the spline roller, the screening hydraulic cylinder is in fastening connection with the rack, and at the same time, the screening hydraulic cylinder is in transmission connection with the sliding plate, the accurate pushing action of the screening hydraulic cylinder ensures that the sliding plate adjusts the position in real time and accurately according to the length of the material, realizes the automatic dynamic control of the length screening of the material, and greatly improves the efficiency and accuracy of the length screening work. Through the accurate cooperation and cooperative action of the above parts, the length screening assembly realizes the accurate and automatic sorting of the length of the material, improves the overall automation degree, material utilization efficiency and welding quality stability of the welding device, and also effectively reduces the error and labor intensity caused by manual intervention.

[0013] Further, the conveying assembly includes a conveying belt, a conveying wheel, a driven wheel and a conveying motor, the conveying motor is in fastening connection with the rack, the conveying motor is in transmission connection with the conveying belt, the conveying belt is in transmission connection with the conveying wheel, and the conveying belt is in transmission connection with the driven wheel.

[0014] By adopting the above technical scheme, firstly, the conveying motor is tightly connected with the rack, so that the motor has a stable and reliable support basis during work, avoiding vibration or displacement during work, and improving the conveying efficiency and stability. The conveying motor is in transmission connection with the conveying belt, so as to accurately transmit the rotary power to the conveying belt, so that the conveying belt generates continuous and stable linear motion, and the screened materials are smoothly conveyed forward. The conveying belt is in transmission connection with the conveying wheel, and the conveying wheel realizes the guiding, tensioning and continuous rotating support of the conveying belt, so as to ensure smooth operation of the belt and avoid deviation or slipping. At the same time, the other end of the conveying belt is in transmission connection with the driven wheel, and the driven wheel is a passive rotating part, which cooperates with the conveying wheel to work together to effectively tension and support the conveying belt, so as to ensure that the belt always maintains appropriate tension and accurate running track during material conveying. Through the close mechanical cooperation and cooperative work between the above parts, the conveying assembly realizes the automatic, continuous and efficient conveying of the materials from the length screening to the next process, which not only improves the speed and stability of the material conveying, but also effectively reduces the error caused by shaking or displacement during material conveying, ensures the smooth progress of the welding production process, and improves the overall equipment operation efficiency and reliability.

[0015] Further, the feeding assembly comprises a feeding box, a feeding plate, a feeding elastic element, a first electromagnetic block, a first magnetic element, a hinged rod, a lifting hydraulic cylinder and a fixed block. The feeding box is tightly connected with the rack, the feeding plate is in sliding connection with the feeding box, the hinged rod is hinged with the feeding plate, the hinged rod is in sliding connection with the fixed block, the lifting hydraulic cylinder is tightly connected with the fixed block, the fixed block is tightly connected with the rack, the lifting hydraulic cylinder is in transmission connection with the hinged rod, the feeding elastic element is tightly connected with the first magnetic element, the first magnetic element is tightly connected with the feeding plate, the feeding elastic element is tightly connected with the first electromagnetic block, the first electromagnetic block is tightly connected with the fixed block, and the first electromagnetic block and the first magnetic element are magnetically attracted.

[0016] Further, the positioning calibration mechanism comprises a positioning conveying belt, a positioning hydraulic cylinder, a positioning motor and a positioning push plate. The positioning motor is tightly connected with the rack, the positioning motor is in transmission connection with the positioning conveying belt, the positioning hydraulic cylinder is tightly connected with the rack, and the positioning hydraulic cylinder is in transmission connection with the positioning push plate.

[0017] By adopting the technical scheme, firstly, the feeding box is tightly connected with the rack to provide a stable and reliable support foundation for the whole feeding assembly, and also to store and prevent the scattered materials after screening and conveying; the feeding plate is slidingly connected with the feeding box to realize smooth sliding of the materials during one-by-one conveying and to guarantee the orderly conveying of the materials; the articulated rod is hinged with the feeding plate and slidingly connected with the fixed block, after the lifting hydraulic cylinder is tightly connected with the fixed block, the lifting hydraulic cylinder drives the articulated rod to move accurately through the transmission connection with the articulated rod, so as to push the feeding plate to perform controllable tilting and lifting actions, so that the materials accurately enter the next positioning process; the feeding elastic member and the first magnetic member are tightly connected, the first magnetic member is further tightly connected with the feeding plate, forming an elastic buffer mechanism to gently impact the materials during conveying and to prevent the materials from being damaged or deviated; meanwhile, the feeding elastic member and the first electromagnetic block are tightly connected, the first electromagnetic block is tightly connected with the fixed block and magnetically attracted to the first magnetic member to realize precise and controllable magnetic force buffer adjustment, further ensuring the flexible transition and stable conveying of the materials during conveying. Through the precise cooperation and mechanical linkage of the above-mentioned parts, the feeding assembly realizes the automation, stability and accuracy of material conveying, greatly improves the efficiency and reliability of one-by-one accurate feeding of materials, reduces the requirement for manual intervention and the damage rate of materials during feeding, and effectively improves the automation degree and quality assurance capability of the whole welding production.

[0018] Further, the clamping mechanism includes a clamping frame, a clamping hydraulic cylinder, an upper clamping plate, a lower clamping plate, a moving motor, a moving wheel, a sliding block and a clamping elastic member, the clamping hydraulic cylinder is tightly connected with the clamping frame, the clamping hydraulic cylinder is in transmission connection with the upper clamping plate, the lower clamping plate is tightly connected with the clamping frame, the sliding block is slidingly connected with the upper clamping plate, the clamping elastic member is tightly connected with the sliding block, the upper clamping plate is slidingly connected with the sliding block, the clamping elastic member is tightly connected with the upper clamping plate, the moving motor is tightly connected with the sliding block, and the moving motor is in transmission connection with the moving wheel.

[0019] By adopting the above technical scheme, firstly, the clamping frame is used as the basic support structure of the whole clamping mechanism, which is used to stably connect the clamping hydraulic cylinder and the lower clamping plate, and ensure the stability of the whole structure during clamping; the clamping hydraulic cylinder is tightly connected with the clamping frame and is in transmission connection with the upper clamping plate, and precise lifting action of the upper clamping plate is realized through hydraulic drive, and a stable clamping space is formed with the lower clamping plate fixed on the clamping frame, and the material is clamped firmly and reliably; the sliding block is in sliding connection with the upper clamping plate, which ensures that the upper clamping plate has a stable and controllable straight sliding track during vertical clamping action, and avoids deviation or shaking during clamping; the clamping elastic element is tightly connected with the sliding block, and the clamping elastic element is also tightly connected with the upper clamping plate, so that the clamping action has good buffering performance, avoids damage to the material due to excessive clamping pressure, and ensures that the material remains stable when clamped; the moving motor is tightly connected with the sliding block and is in transmission connection with the moving wheel, and precise displacement adjustment of the sliding block is realized through the moving motor driving the moving wheel, so as to finely adjust the clamping position of the clamping mechanism in the horizontal direction, and 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 precise positioning, efficient clamping and position dynamic fine adjustment of the material, improves the clamping stability and positioning accuracy in the welding process, ensures the reliability and consistency of the welding quality, reduces the error caused by manual adjustment, and improves the automation degree and production efficiency of the whole welding device.

[0020] Further, the welding execution mechanism includes a welding gun, a moving 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 in rotating connection, the slide rail block and the moving slide rail are in sliding connection, the rotating motor and the slide rail block are tightly connected, the rotating motor and the welding gun are in transmission connection, and the moving slide rail and the clamping frame are tightly connected.

[0021] By adopting the above technical scheme, firstly, the welding execution mechanism is provided with multiple welding guns, which are respectively located at the four corners of the connection point of the material to be welded, so that the welding guns can synchronously or step by step perform efficient and accurate welding work; the welding gun is rotationally connected with the sliding rail block, so that the welding gun can be flexibly rotated around the sliding rail block, the welding angle and position are accurately adjusted, and it is ensured that each position of the connection point can be accurately covered during the welding work; the sliding rail block is slidingly connected with the moving sliding rail, and the stable movement of the welding gun in the horizontal direction is realized by the linear guiding action of the moving sliding rail, the working range of the welding gun is further expanded, and it is ensured that the welding area is fully and accurately covered; the rotating motor is tightly connected with the sliding rail block and is drivingly connected with the welding gun, the rotating motor realizes accurate rotation and fine adjustment of the welding posture by driving the welding gun, it is ensured that the angle and position of the welding gun are accurately and stably during the execution of the welding task, the risk of welding defects caused by the position deviation of the welding gun is effectively reduced, and the reliability and consistency of the welding quality are ensured. Through the mechanical linkage and cooperative matching of the above-mentioned parts, the welding execution mechanism 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 welding products.

[0022] Further, the strength self-checking mechanism includes an electrically conductive positive electrode, an electrically conductive negative electrode, a rotating block and a rotating motor, the electrically conductive positive electrode, the electrically conductive negative electrode and the rotating block are tightly connected, the rotating motor and the sliding rail block are tightly connected, and the rotating motor and the rotating block are drivingly connected.

[0023] By adopting the above technical scheme, firstly, the strength self-checking mechanism is provided with an electrically conductive positive electrode and an electrically conductive negative electrode, both of which are tightly connected with the rotating block to form a stable and reliable electrically conductive detection unit; after the welding is completed, the electrically conductive positive electrode and the electrically conductive negative electrode are in contact with the welded part, the electrically conductive performance of the welded joint is accurately detected through the resistance conduction principle to determine whether there are defects, slag, cracks or non-penetration areas in the weld; the rotating block serves as a support and rotating carrier for the electrically conductive positive electrode and the electrically conductive negative electrode, and is stably rotated under the driving of the rotating motor, so that the electrically conductive positive electrode and the electrically conductive negative electrode can be adjusted at multiple angles around the welding area; the rotating motor is tightly connected with the sliding rail block to form a firm and reliable mounting base, and is drivingly connected with the rotating block to provide accurate and stable rotating power, so as to ensure that the rotating block carrying the electrically conductive positive electrode and the electrically conductive negative electrode rotates in an orderly manner. Through the mechanical linkage and cooperation of the above-mentioned parts, the strength self-checking mechanism realizes automatic and real-time 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 of the welding device and the product quality guarantee level.

[0024] The welding method comprises:

[0025] Step one: the material is placed on the rack, and the material is screened through different lengths by the length screening assembly and the conveying assembly, so as to be screened into the feeding assembly, and the length is lost by the rolling abutment of the screening wheel and the driven wheel, and falls into the feeding assembly;

[0026] Step two: the feeding plate in the feeding assembly is inclined by the cooperation of the feeding elastic element, the first electromagnetic block, the first magnetic element and the hinged rod, and the material is resisted by the feeding box, and the material is sequentially fed into the positioning and calibration mechanism;

[0027] Step three: the material is positioned and calibrated by the positioning push plate in the positioning and calibration mechanism according to the required length of the welding position, and is positioned to the correct position and conveyed to the clamping mechanism;

[0028] Step four: the welding position is fine-tuned by the moving wheel in the clamping mechanism;

[0029] Step five: the welding position is welded by the welding execution mechanism, and whether there are defects, slag, cracks and non-penetration areas is judged by the electric positive and negative electrodes in the strength self-checking mechanism.

[0030] Compared with the prior art, the beneficial effects of the present application are:

[0031] The length screening assembly is provided with a spline roller and a screening wheel, the limiting protrusion arranged on the spline roller is in rotating abutment with the sliding plate, the accurate mechanical differentiated rolling conveying screening of the material with different lengths is realized, and it is ensured that only the material meeting the welding requirements is accurately fed into the next link; meanwhile, the conveying assembly is driven by the conveying motor, the conveying belt and the conveying wheel cooperate with the driven wheel, the screened material is efficiently and stably conveyed to the feeding assembly, the positioning deviation caused by vibration or sliding of the material in the traditional conveying is avoided, and the welding positioning precision and the automation degree are improved.

[0032] The feeding assembly is driven by the magnetic attraction between the first electromagnetic block and the first magnetic element, the feeding plate is accurately inclined and lifted under the accurate pushing of the lifting hydraulic cylinder through the hinged rod, the accurate inclination and lifting action is realized, the flexible buffering and stable conveying of the material are completed under the cooperation of the feeding elastic element, the material is accurately fed into the positioning and calibration mechanism one by one, the problems of material positioning deviation or damage caused by the hard impact of the traditional feeding device are overcome, and the accurate regulation and control and flexible transition of the feeding process are realized.

[0033] The welding gun in the welding execution mechanism is located at the four corners of the connection point to be welded, the welding gun can be freely and accurately moved in space and the angle is adjusted through the cooperation of the moving slide rail, the slide rail block and the rotating motor, the welding gun can ensure the comprehensive and accurate coverage of the welding area, the strength self-checking mechanism is provided with an electrically conductive positive electrode and an electrically conductive negative electrode, the rotating block is driven to rotate by the rotating motor, the real-time automatic detection of the electrical conductivity after welding is realized, the internal cracks, incomplete penetration and other defects of the welding seam are quickly and accurately positioned, the uncertainty of manual detection is effectively avoided, and the quality reliability and consistency of the welded product are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the application;

[0035] Figure 2 It is a schematic diagram of the positioning and calibration mechanism structure of the application;

[0036] Figure 3 It is a schematic diagram of the length screening assembly structure of the application;

[0037] Figure 4 It is a schematic diagram of the conveying assembly structure of the application;

[0038] Figure 5 It is a schematic diagram of the feeding assembly structure of the application;

[0039] Figure 6 It is a schematic diagram of the positioning and calibration mechanism structure of the application;

[0040] Figure 7 It is a schematic diagram of the clamping mechanism structure of the application;

[0041] Figure 8 It is a schematic diagram of the welding execution mechanism structure of the application;

[0042] Figure 9 It is a schematic diagram of the strength self-checking mechanism structure of the application.

[0043] In the figure: 1, positioning 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 element; 3, welding execution mechanism; 31, welding gun; 32, moving slide rail; 33, rotating motor; 34, slide rail block; 4, strength self-checking mechanism; 41, electric guide positive electrode; 42, electric guide negative electrode; 43, rotating block; 44, rotating motor; 5, feeding mechanism; 51, material frame; 52, length screening assembly; 521, spline roller; 5211, limiting protrusion; 522, spline roller; 523, screening wheel; 524, sliding plate; 525, limiting 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, feeding assembly; 541, feeding box; 542, feeding plate; 543, feeding elastic element; 544, first electromagnetic block; 545, first magnetic element; 546, hinged rod; 547, lifting hydraulic cylinder; 548, fixed block. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0045] Please refer to Figure 1 - Figure 9 As shown in the figure, the present application provides a kind of welding device and method technical scheme with welding strength self-checking function for pneumatic shutter:

[0046] The welding device includes positioning calibration mechanism 1, clamping mechanism 2, welding execution mechanism 3, strength self-checking mechanism 4 and feeding mechanism 5, positioning calibration mechanism 1 and feeding mechanism 5 are tightly connected, positioning calibration mechanism 1 and clamping mechanism 2 are tightly connected, welding execution mechanism 3 and strength self-checking mechanism 4 are tightly connected.

[0047] By adopting the above technical scheme, firstly, the feeding mechanism 5 accurately transmits 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 direction of the material, and through the cooperative work of the positioning conveying belt 11, the positioning hydraulic cylinder 12, the positioning motor 13 and the positioning push plate 14 inside it, it ensures that the welding area of the material accurately enters the preset welding position. The clamping mechanism 2 receives the material after positioning and calibration, and through the close cooperation of the clamping hydraulic cylinder 22, the upper clamping plate 23, the lower clamping plate 24 and the clamping elastic element 28, the material is firmly clamped and positioned, avoiding deviation or shaking during welding; At the same time, through the movement of the motor 25 to drive the moving wheel 26 to fine-tune the welding position, so that the welding position reaches the best state. Subsequently, the welding gun 31 in the welding execution mechanism 3 realizes the flexible movement of the welding gun 31 in space under the cooperation of the moving slide rail 32, the slide rail block 34 and the rotating motor 33, accurately welds the welding point of the material, and ensures the stable and reliable welding quality. Finally, the welding execution mechanism 3 and the strength self-checking mechanism 4 are directly and tightly connected, after the welding process is completed, the strength self-checking mechanism 4 forms a conduction loop with the positive electrode 41 and the negative electrode 42, identifies defects, slag inclusion, cracks or incomplete penetration and other quality problems, and avoids unqualified products from flowing into the next process or the market.

[0048] Further, the feeding mechanism 5 includes a rack 51, a length screening assembly 52, a conveying assembly 53 and an upper feeding assembly 54, the length screening assembly 52, the conveying assembly 53 and the upper feeding assembly 54 are all tightly connected with the rack 51, the upper feeding assembly 54 is located below the length screening assembly 52, and the length screening assembly 52 and the conveying assembly 53 are located on both sides of the rack 51.

[0049] By adopting the above technical scheme, firstly, the rack 51 in the feeding mechanism 5 serves as a whole structure main support component for supporting the length screening assembly 52, the conveying assembly 53 and the feeding assembly 54, ensuring the stability of each component in the spatial position and facilitating the subsequent precise work. After the material is initially placed in the rack 51, the length screening assembly 52 starts to work, and through the rotating connection transmission of the spline roller shaft 521 and the spline roller 522, the screening motor 528 drives the spline roller 522 to rotate, thereby accurately controlling the rolling and conveying of the material; at the same time, the length screening assembly 52 cooperates with the screening wheel 523 and the sliding plate 524, and through the rotating abutment of the limiting protrusion 5211 and the sliding plate 524, the material of different lengths is accurately screened, the automatic classification of materials of different lengths is realized, the material of different lengths is avoided to enter the next process, and the screening accuracy is improved. After the material is screened by the length screening assembly 52, it is then conveyed by the conveying assembly 53 arranged at the side of the rack 51. The conveying assembly 53 drives the conveying belt 531 to rotate through the conveying motor 534 fastened to the rack 51, and then realizes the continuous and efficient transmission of the material through the linkage transmission of the conveying wheel 532 and the driven wheel 533. The conveying assembly 53 is simple and reliable in structure, effectively improves the conveying efficiency and conveying stability of the material, and avoids the leakage and misplacement of the material caused by manual conveying. Finally, the screened and conveyed material automatically falls into the feeding assembly 54 located directly below the length screening assembly 52. Since the feeding assembly 54 is directly fastened to the lower part of the rack 51, the material can flow into the feeding box 541 naturally by gravity. The feeding box 541 is stable in structure, and the connection with the rack 51 ensures the stable and reliable collection of the material. The structure makes the concentrated storage and one-by-one conveying of the material more efficient, and avoids the disorder caused by human intervention. Therefore, through the fastening connection of the length screening assembly 52, the conveying assembly 53, the feeding assembly 54 and the rack 51, an automatic closed-loop process from the initial placement of the material to the final accurate one-by-one 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, and meets the efficiency and reliability requirements of automatic welding production.

[0050] Further, the length screening assembly 52 comprises a spline roller shaft 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 shaft 521 is slidingly connected with the rack 51, the spline roller 522 is drivingly connected with the spline roller shaft 521, the spline roller 522 is rotatably connected with the limiting block 525, the screening belt 526 is drivingly connected with the spline roller 522, the screening motor 528 is fixedly connected with the rack 51, the screening motor 528 is drivingly connected with the screening belt 526, the limiting block 525 is fixedly connected with the rack 51, the spline roller shaft 521 is drivingly connected with the screening wheel 523, the spline roller shaft 521 is provided with a limiting protrusion 5211, the limiting protrusion 5211 rotatably abuts against the sliding plate 524, the sliding plate 524 is slidingly connected with the rack 51, the screening hydraulic cylinder 527 is fixedly connected with the rack 51, and the screening hydraulic cylinder 527 is drivingly connected with the sliding plate 524.

[0051] By adopting the above technical scheme, firstly, the spline roller shaft 521 in the length screening assembly 52 is slidingly connected with the rack 51, is used for initial bearing and rolling guidance to the material placed thereon, the spline roller shaft 521 is rotatably abutted with the sliding plate 524 through the limiting protrusion 5211 provided on the surface thereof, different materials with different lengths produce different displacement effects when rolling, and the length difference of the materials is accurately identified and preliminarily sorted; the spline roller 522 is drivingly connected with the spline roller shaft 521, is used for driving the spline roller shaft 521 to accurately rotate, and ensures that the materials on the surface of the roller stably and continuously roll forward; at the same time, the spline roller 522 is rotatably connected with the limiting block 525, the limiting block 525 is fixedly connected with the rack 51, so that the spline roller 522 rotates more stably and accurately, and the motion stability of the spline roller shaft 521 is ensured. The screening belt 526 is drivingly connected with the spline roller 522, is used for accurately transmitting the power of the screening motor 528 to the spline roller 522, and further driving the spline roller shaft 521 to stably rotate, so as to ensure the continuity and stability of the whole screening work; the screening motor 528 is fixedly connected with the rack 51, the screening motor 528 is drivingly connected with the spline roller 522 through the screening belt 526, provides stable and sufficient power output, ensures the accuracy and efficiency of the screening work, and avoids the screening failure or the decrease of the precision caused by insufficient power. The screening wheel 523 is drivingly connected with the spline roller shaft 521, is used for further accurate screening during the process that the materials are driven by the roller, the materials not meeting the length specification are separated from the screening channel in time through the accurate rotation of the screening wheel 523, so as to ensure that all the materials entering the next process meet the set length requirement, and effectively improve the consistency and quality of the welding production. The sliding plate 524 is slidingly connected with the rack 51, the screening position is adjusted in time through the accurate sliding displacement of the sliding plate 524, the accurate measurement and grading of the material length are realized by cooperating with the limiting protrusion 5211 provided on the spline roller shaft 521, the screening hydraulic cylinder 527 is fixedly connected with the rack 51, at the same time, the screening hydraulic cylinder 527 is drivingly connected with the sliding plate 524, the accurate pushing action of the screening hydraulic cylinder 527 ensures that the sliding plate 524 adjusts the position in real time and accurately according to the material length, realizes the automatic dynamic control of the material length screening, and greatly improves the efficiency and accuracy of the length screening work. Through the accurate cooperation and cooperative action of the above-mentioned parts, the length screening assembly 52 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 also effectively reduces the error and labor intensity caused by manual intervention.

[0052] Further, the conveying assembly 53 comprises a conveying belt 531, a conveying wheel 532, a driven wheel 533 and a conveying motor 534, the conveying motor 534 is fixedly connected with the rack 51, the conveying motor 534 is drivingly connected with the conveying belt 531, the conveying belt 531 is drivingly connected with the conveying wheel 532, and the conveying belt 531 is drivingly connected with the driven wheel 533.

[0053] By adopting the above technical scheme, first, the conveying motor 534 is tightly connected with the rack 51, so that the motor has a stable and reliable support basis during work, avoiding vibration or displacement during work, and improving the conveying efficiency and stability. The conveying motor 534 is in transmission connection with the conveying belt 531, so as to accurately transmit the rotary power to the conveying belt 531, so that the conveying belt 531 generates continuous and stable linear motion, and pushes the screened materials to be stably conveyed forward. The conveying belt 531 is in transmission connection with the conveying wheel 532, and the conveying wheel 532 is used to realize the guiding, tensioning and continuous rotating support of the conveying belt 531, so as to ensure smooth operation of the belt and avoid deviation or slipping. At the same time, the other end of the conveying belt 531 is in transmission connection with the driven wheel 533, and the driven wheel 533 is a passive rotating part, which cooperates with the conveying wheel 532 to work together to effectively tension and support the conveying belt 531, so as to ensure that the belt always maintains appropriate tension and accurate running track during material conveying. Through the close mechanical cooperation and cooperative work between the above-mentioned parts, the conveying assembly 53 realizes the automatic, continuous and efficient conveying of the materials from the length screening to the next process, which not only improves the speed and stability of material conveying, but also effectively reduces the errors caused by shaking or displacement during material conveying, ensures the smooth progress of the welding production process, and improves the overall equipment operation efficiency and reliability.

[0054] Further, 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 is tightly connected with the rack 51, the feeding plate 542 is in sliding connection with the feeding box 541, the hinged rod 546 is hinged with the feeding plate 542, the hinged rod 546 is in sliding connection with the fixed block 548, the lifting hydraulic cylinder 547 is tightly connected with the fixed block, the fixed block 548 is tightly connected with the rack 51, the lifting hydraulic cylinder 547 is in transmission connection with the hinged rod 546, the feeding elastic member 543 is tightly connected with the first magnetic member 545, the first magnetic member 545 is tightly connected with the feeding plate 542, the feeding elastic member 543 is tightly connected with the first electromagnetic block 544, the first electromagnetic block 544 is tightly connected with the fixed block 548, and the first electromagnetic block 544 and the first magnetic member 545 are magnetically attracted in transmission.

[0055] By adopting the above technical scheme,

[0056] Further, the positioning and calibration mechanism 1 comprises a positioning conveying belt 11, a positioning hydraulic cylinder 12, a positioning motor 13 and a positioning push plate 14. The positioning motor 13 is tightly connected with the rack 51, the positioning motor 13 is in transmission connection with the positioning conveying belt 11, the positioning hydraulic cylinder 12 is tightly connected with the rack 51, and the positioning hydraulic cylinder 12 is in transmission connection with the positioning push plate 14.

[0057] By adopting the technical scheme, firstly, the feeding box 541 is fastened and connected with the rack 51, providing a stable and reliable support foundation for the whole feeding assembly 54, and also playing a role in storing and preventing the scattered materials after screening and conveying; the feeding plate 542 is slidingly connected with the feeding box 541, realizing smooth sliding of the materials during one-by-one conveying, and guaranteeing the orderly conveying of the materials; the articulated rod 546 is articulated with the feeding plate 542 and slidingly connected with the fixed block 548, after the lifting hydraulic cylinder 547 is fastened and connected with the fixed block 548, the lifting hydraulic cylinder 547 drives the articulated rod 546 to move accurately through the transmission connection with the articulated rod 546, so as to push the feeding plate 542 to perform controllable tilting and lifting actions, so that the materials accurately enter the next positioning process; the feeding elastic member 543 and the first magnetic member 545 are fastened and connected, the first magnetic member 545 is further fastened and connected with the feeding plate 542, forming an elastic buffering mechanism, which is used to gently impact the materials during conveying, and prevent the materials from being damaged or deviated; meanwhile, the feeding elastic member 543 and the first electromagnetic block 544 are fastened and connected, the first electromagnetic block 544 is fastened and connected with the fixed block 548, and generates magnetic attraction transmission with the first magnetic member 545, realizing accurate and controllable magnetic force buffering adjustment, further ensuring the flexible transition and stable conveying of the materials during conveying. Through the accurate cooperation and mechanical linkage of the above-mentioned parts, the feeding assembly 54 realizes the automation, stability and accuracy of material conveying, greatly improves the efficiency and reliability of one-by-one accurate feeding of materials, reduces the demand for manual intervention and the damage rate of materials during feeding, and effectively improves the automation degree and quality assurance capability of the whole welding production.

[0058] Further, 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 is fastened and connected with 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 fastened and connected with the clamping frame 21, the sliding block 27 is in sliding connection with the upper clamping plate 23, the clamping elastic member 28 is fastened and connected with the sliding block 27, the upper clamping plate 23 is in sliding connection with the sliding block 27, the clamping elastic member 28 is fastened and connected with the upper clamping plate 23, the moving motor 25 is fastened and connected with the sliding block 27, and the moving motor 25 is in transmission connection with the moving wheel 26.

[0059] By adopting the above technical scheme, first, the clamping frame 21 is used as the basic support structure of the whole clamping mechanism 2, which is used to stably connect the clamping hydraulic cylinder 22 and the lower clamping plate 24, and ensure the stability of the overall structure during clamping; the clamping hydraulic cylinder 22 is tightly connected with the clamping frame 21, and is drivingly connected with the upper clamping plate 23, so as to realize the precise lifting action of the upper clamping plate 23 by hydraulic driving, and form a stable clamping space with the lower clamping plate 24 fixed on the clamping frame 21, so as to firmly and reliably clamp the material; the sliding block 27 is slidingly connected with the upper clamping plate 23, so as to ensure that the upper clamping plate 23 has a stable and controllable straight sliding track during the vertical clamping action, and avoid deviation or shaking during clamping; the clamping elastic element 28 is tightly connected with the sliding block 27, and the clamping elastic element 28 is also tightly connected with the upper clamping plate 23, so that the clamping action has good buffering performance, the clamping pressure is prevented from being too large to damage the material, and the material is ensured to be kept in a stable state during clamping; the moving motor 25 is tightly connected with the sliding block 27, and is drivingly connected with the moving wheel 26, so as to realize the precise displacement adjustment of the sliding block 27 by the moving motor 25 driving the moving wheel 26, so as to finely adjust the clamping position of the clamping mechanism 2 in the horizontal direction, and accurately realize the dynamic calibration and adjustment of the material welding position. Through the precise and coordinated mechanical linkage of the above-mentioned parts, the clamping mechanism 2 realizes the functions of precise positioning, efficient clamping and position dynamic fine adjustment of the material, improves the clamping stability and positioning accuracy during welding, ensures the reliability and consistency of the welding quality, reduces the error caused by manual adjustment, and improves the automation degree and production efficiency of the whole welding device.

[0060] Further, the welding execution mechanism 3 includes a welding gun 31, a moving 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 moving 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 drivingly connected, and the moving slide rail 32 and the clamping frame 21 are tightly connected.

[0061] By adopting the above technical scheme, firstly, the welding execution mechanism 3 is provided with a plurality of welding guns 31, which are respectively located at the four corners of the connection point of the material to be welded, so that the welding guns 31 can synchronously or step by step perform efficient and accurate welding work; the welding gun 31 is rotationally connected with the sliding rail block 34, so that the welding gun 31 can be flexibly rotated around the sliding rail block 34, the welding angle and position are accurately adjusted, and it is ensured that each position of the connection point can be accurately covered during the welding work; the sliding rail block 34 is slidingly connected with the moving sliding rail 32, and the stable movement of the welding gun 31 in the horizontal direction is realized by the linear guiding action of the moving sliding rail 32, the working range of the welding gun 31 is further expanded, and it is ensured that the welding area is fully and accurately covered; the rotating motor 33 is tightly connected with the sliding rail block 34 and is drivingly connected with the welding gun 31, the rotating motor 33 realizes accurate rotation and fine adjustment of the welding posture by driving the welding gun 31, it is ensured that the angle and position of the welding gun 31 are accurately and stably during the execution of the welding task, the risk of welding defects caused by the position deviation of the welding gun 31 is effectively reduced, and the reliability and consistency of the welding quality are ensured. Through the mechanical linkage and cooperative matching of the above-mentioned parts, the welding execution mechanism 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.

[0062] Further, the strength self-checking mechanism 4 includes an electrically conductive positive electrode 41, an electrically conductive negative electrode 42, a rotating block 43 and a rotating motor 44, the electrically conductive positive electrode 41, the electrically conductive negative electrode 42 and the rotating block 43 are tightly connected, the rotating motor 44 is tightly connected with the sliding rail block 34, and the rotating motor 44 is drivingly connected with the rotating block 43.

[0063] By adopting the above technical scheme, firstly, the strength self-checking mechanism 4 is provided with the electrically conductive positive electrode 41 and the electrically conductive negative electrode 42, both of which are tightly connected with the rotating block 43 to form a stable and reliable electrically conductive detection unit; after the welding is completed, the electrically conductive positive electrode 41 and the electrically conductive negative electrode 42 are in contact with the welded part, the electrically conductive performance of the welded joint is accurately detected through the resistance conduction principle to determine whether there are defects, slag inclusion, cracks or incomplete penetration areas in the weld; the rotating block 43 serves as a support and rotating carrier of the electrically conductive positive electrode 41 and the electrically conductive negative electrode 42, and is stably rotated under the driving of the rotating motor 44, so that the electrically conductive positive electrode 41 and the electrically conductive negative electrode 42 can be adjusted at multiple angles around the welding area; the rotating motor 44 is tightly connected with the sliding rail block 34 to form a firm and reliable mounting base, and is drivingly connected with the rotating block 43 to provide accurate and stable rotating power, so as to ensure that the rotating block 43 carries the electrically conductive positive electrode 41 and the electrically conductive negative electrode 42 to rotate in an orderly manner. Through the mechanical linkage and cooperation of the above-mentioned parts, the strength self-checking mechanism 4 realizes automatic and real-time 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.

[0064] The welding method comprises the following steps:

[0065] Step one: the material is placed on the rack 51, and the material is screened through different lengths by the length screening assembly 52 and the conveying assembly 53, so as to be screened into the feeding assembly 54, and the length screening wheel 523 and the driven wheel 533 are lost from the rolling abutment effect, and the material falls into the feeding assembly 54;

[0066] Step two: the feeding plate 542 in the feeding assembly 54 is inclined by the cooperation of the feeding elastic element 543, the first electromagnetic block 544, the first magnetic element 545 and the hinged rod 546, and the material is resisted by the feeding box 541, and the material is sequentially fed into the positioning calibration mechanism 1;

[0067] Step three: the material is positioned according to the required length of the welding position by the positioning push plate 14 in the positioning calibration mechanism 1, and the material is conveyed to the clamping mechanism 2 in the correct position;

[0068] Step four: the welding position is finely adjusted by the moving wheel 26 in the clamping mechanism 2;

[0069] Step five: the welding position is welded by the welding execution mechanism 3, and whether there is a defect, slag inclusion, crack or incomplete penetration area is judged by the electric positive pole 41 and the electric negative pole 42 in the strength self-checking mechanism 4.

[0070] The working principle of the present application is as follows:

[0071] The length screening assembly 52 is provided with the spline roller 521 and the screening wheel 523, the limiting protrusion 5211 provided on the spline roller 521 is in abutment with the sliding plate 524, the accurate mechanical differentiated rolling conveying screening of the material with different lengths is realized, and it is ensured that only the material meeting the welding requirements is accurately fed into the next link; meanwhile, the conveying assembly 53 is driven by the conveying motor 534, the conveying belt 531 and the conveying wheel 532 cooperate with the driven wheel 533, the screened material is efficiently and stably conveyed to the feeding assembly 54, the positioning deviation caused by vibration or sliding of the material in the traditional conveying is avoided, and the welding positioning precision and the automation degree are improved.

[0072] The feeding assembly 54 is driven by the magnetic attraction between the first electromagnetic block 544 and the first magnetic element 545, the feeding plate 542 is accurately inclined and lifted under the accurate pushing of the lifting hydraulic cylinder 547 through the hinged rod 546, the accurate inclination lifting action is realized, the flexible buffering and stable conveying of the material are completed under the cooperation of the feeding elastic element 543, the material is accurately fed into the positioning calibration mechanism 1 one by one, the problems of material positioning deviation or damage caused by the hard impact of the traditional feeding device are overcome, and the accurate regulation and control and flexible transition of the feeding process are realized.

[0073] The welding gun 31 in the welding actuator 3 is located at the four corners of the connection point to be welded, and through the cooperation of the moving slide rail 32, the slide rail block 34 and the rotating motor 33, the welding gun 31 can be freely and accurately moved in space and adjusted in angle, so as to ensure the comprehensive and accurate coverage of the welding area; the strength self-checking mechanism 4 is provided with an electric guide positive electrode 41 and an electric guide negative electrode 42, and through the rotation of the rotating block 43 driven by the rotating motor 44, the real-time automatic detection of the electric conductivity after the welding is realized, the internal cracks, incomplete penetration and other defects of the welding seam are quickly and accurately positioned, the uncertainty of manual detection is effectively avoided, and the quality reliability and consistency of the welded product are greatly improved.

[0074] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being defined by the appended claims rather than by the above description, and it is therefore intended that all changes and modifications that fall within the meaning and range of equivalents of the elements of the claims be encompassed by the application. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A welding device for pneumatic blinds with a welding strength self-checking function, characterized in that: The welding device comprises a positioning calibration mechanism (1), a clamping mechanism (2), a welding execution mechanism (3), a strength self-checking mechanism (4) and a feeding mechanism (5), the positioning calibration mechanism (1) and the feeding mechanism (5) are fixedly connected, the positioning calibration mechanism (1) and the clamping mechanism (2) are fixedly connected, and the welding execution mechanism (3) and the strength self-checking mechanism (4) are fixedly connected; The feeding mechanism (5) comprises a rack (51), a length screening assembly (52), a conveying assembly (53) and a feeding assembly (54), the length screening assembly (52), the conveying assembly (53) and the feeding assembly (54) are fixedly connected with the rack (51), the feeding assembly (54) is located below the length screening assembly (52), and the length screening assembly (52) and the conveying assembly (53) are located on both sides of the rack (51); The length screening assembly (52) comprises a spline roller shaft (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 shaft (521) is slidingly connected with the rack (51), the spline roller (522) is in transmission connection with the spline roller shaft (521), the spline roller (522) is in rotary connection with the limiting block (525), the screening belt (526) is in transmission connection with the spline roller (522), the screening motor (528) is fixedly connected with the rack (51), the screening motor (528) is in transmission connection with the screening belt (526), the limiting block (525) is fixedly connected with the rack (51), the spline roller shaft (521) is in transmission connection with the screening wheel (523), the spline roller shaft (521) is provided with a limiting protrusion (5211), the limiting protrusion (5211) is in rotary abutment with the sliding plate (524), the sliding plate (524) is slidingly connected with the rack (51), the screening hydraulic cylinder (527) is fixedly connected with the rack (51), and the screening hydraulic cylinder (527) is in transmission connection with the sliding plate (524).

2. The welding device for air louver with welding strength self-checking function according to claim 1, characterized in that: The conveying assembly (53) comprises a conveying belt (531), a conveying wheel (532), a driven wheel (533) and a conveying motor (534), the conveying motor (534) is fixedly connected with the rack (51), the conveying motor (534) is in transmission connection with the conveying belt (531), the conveying belt (531) is in transmission connection with the conveying wheel (532), and the conveying belt (531) is in transmission connection with the driven wheel (533).

3. The welding device with self-checking function of welding strength for pneumatic louver according to claim 2, 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) is fastenedly connected with the rack (51), the feeding plate (542) is slidably connected with the feeding box (541), the hinged rod (546) is hinged with the feeding plate (542), the hinged rod (546) is slidably connected with the fixed block (548), the lifting hydraulic cylinder (547) is fastenedly connected with the fixed block (548), the fixed block (548) is fastenedly connected with the rack (51), the lifting hydraulic cylinder (547) is drivingly connected with the hinged rod (546), the feeding elastic member (543) is fastenedly connected with the first magnetic member (545), the first magnetic member (545) is fastenedly connected with the feeding plate (542), the feeding elastic member (543) is fastenedly connected with the first electromagnetic block (544), the first electromagnetic block (544) is fastenedly connected with the fixed block (548), and the first electromagnetic block (544) and the first magnetic member (545) are magnetically attracted.

4. The welding device with the welding strength self-checking function for the pneumatic louver according to claim 3, characterized in that: The positioning 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) is fastenedly connected with the rack (51), and the positioning motor (13) is drivingly connected with the positioning conveyor belt (11); the positioning hydraulic cylinder (12) is fastenedly connected with the rack (51), and the positioning hydraulic cylinder (12) is drivingly connected with the positioning push plate (14).

5. The welding device for air louver with welding strength self-checking function according to claim 4, 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) is fastenedly connected with the clamping frame (21), the clamping hydraulic cylinder (22) is drivingly connected with the upper clamping plate (23), the lower clamping plate (24) is fastenedly connected with the clamping frame (21), the sliding block (27) is slidably connected with the upper clamping plate (23), the clamping elastic member (28) is fastenedly connected with the sliding block (27), the upper clamping plate (23) is slidably connected with the sliding block (27), the clamping elastic member (28) is fastenedly connected with the upper clamping plate (23), the moving motor (25) is fastenedly connected with the sliding block (27), and the moving motor (25) is drivingly connected with the moving wheel (26).

6. The welding device with self-checking function of welding strength for pneumatic louver according to claim 5, characterized in that: The welding actuator (3) comprises a welding gun (31), a moving 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 connecting point, the welding gun (31) and the slide rail block (34) are rotationally connected, the slide rail block (34) and the moving slide rail (32) are slidingly connected, the rotating motor (33) and the slide rail block (34) are fixedly connected, the rotating motor (33) and the welding gun (31) are drivingly connected, and the moving slide rail (32) and the clamping frame (21) are fixedly connected.

7. The welding device with self-checking function of welding strength for pneumatic louver according to claim 6, characterized in that: The strength self-checking mechanism (4) comprises an electrically conductive positive electrode (41), an electrically conductive negative electrode (42), a rotating block (43) and a rotating motor (44), the electrically conductive positive electrode (41), the electrically conductive negative electrode (42) and the rotating block (43) are fixedly connected, the rotating motor (44) and the slide rail block (34) are fixedly connected, and the rotating motor (44) and the rotating block (43) are drivingly connected.

8. The welding method of the welding device with the welding strength self-checking function according to claim 7, characterized in that: The welding method comprises: Step one: placing the material on the material rack (51), screening the material through different lengths by the length screening assembly (52) and the conveying assembly (53), so as to enter the feeding assembly (54), and making the length different to lose the rolling abutting action and fall into the feeding assembly (54) by the screening wheel (523) and the driven wheel (533); Step two: the feeding plate (542) in the feeding assembly (54) is inclined by the cooperation of the feeding elastic element (543), the first electromagnetic block (544), the first magnetic element (545) and the hinged rod (546), and the feeding box (541) resists the material at the same time, and the material is fed into the positioning and calibration mechanism (1) one by one; Step three: the positioning push plate (14) in the positioning and calibration mechanism (1) provides positioning to the correct position according to the required length welding position, and conveys the material to the clamping mechanism (2); Step four: the welding position is fine-tuned by the moving wheel (26) in the clamping mechanism (2); Step five: the welding position is welded by the welding actuator (3), and whether there is a defect, slag inclusion, crack or incomplete penetration area is judged by the electrically conductive positive electrode (41) and the electrically conductive negative electrode (42) in the strength self-checking mechanism (4).

Images