Integrated welding seam detection welding device for electric automobile parts

Abstract

The invention belongs to the technical field of electric vehicle repair welding, and discloses an integrated welding seam detection welding device for electric vehicle parts, which comprises a base and two multi-stage cylinders symmetrically fixed on the left and right sides of the base through brackets, the electric chuck is movably installed at the output end of the multi-stage air cylinder through a bearing and used for fixing the tubular parts, the welding gun and the welding seam detection head are arranged above the middle of the base, and the stabilizing mechanism is arranged in the middle of the upper surface of the base, located on the left side and the right side of the welding gun and used for automatically supporting and fixing the butt joint area of the two tubular parts. Through the cooperative design of the multi-stage air cylinder, the electric chuck and the stabilizing mechanism, the butt joint position of two tubular parts can be supported and limited, the constraint effect on a workpiece is good, the coaxiality is improved, and the situation that the butt joint position of the tubular parts is inconvenient to support and limit, so that the butt joint position of the tubular parts is eccentrically inclined, and the machining precision is improved is avoided. And misalignment and non-uniform welding seam gaps are easily generated during welding, so that the welding effect is reduced.

Description

Technical Field

[0001] This invention belongs to the field of electric vehicle repair welding technology, specifically an integrated weld inspection and welding device for electric vehicle parts. Background Technology

[0002] With the rapid growth of electric vehicle ownership in my country, their safety during use and their economic efficiency throughout the entire life cycle have become the focus of social attention. Key load-bearing structural components of electric vehicles, such as the chassis and battery pack protective frame, are prone to damage such as local deformation, cracking, or even breakage due to road impacts, accidental collisions, or material fatigue during long-term use. In the field of electric vehicle repair and remanufacturing, the quality of repair welding of key tubular structural components such as the chassis and battery pack frame is directly related to the vehicle's driving safety and performance restoration.

[0003] Currently, a Chinese patent (publication number: CN218518043U) discloses a quick alignment fixture for welding automotive parts. This type of technology uses a hydraulic cylinder to drive a positioning disc to axially compress the end face of the part to achieve docking. Although it has achieved preliminary automation, it still has obvious limitations in practical applications, especially in the repair of electric vehicle structural parts where coaxiality requirements are extremely high.

[0004] The core problem with this type of existing technology is that it only applies pressure to the two ends of the parts for docking, without providing direct and effective internal support and radial constraint at the docking point. This makes it easy for the two tubular parts to become eccentric and tilted in the docking area due to external forces or their own weight, making it difficult to guarantee coaxiality. The positioning constraint effect on the workpiece is poor, and it is easy to produce misalignment and uneven weld gaps during welding, which reduces the welding effect. Moreover, the repaired parts often have straightness deviations, which poses a safety hazard for the subsequent use of the vehicle.

[0005] Therefore, an integrated weld inspection and welding device for electric vehicle components is proposed to solve the above problems. Summary of the Invention

[0006] Technical problems to be solved To address the problems mentioned in the background art, the present invention provides an integrated weld inspection and welding device for electric vehicle parts, which has the advantages of high coaxiality and high welding accuracy. Through the coordinated design of multi-stage cylinders, electric chucks, stabilizing mechanisms and other structures, it is easy to support and limit the joint of two tubular parts, improve coaxiality, and provide good positioning and constraint effect on the workpiece, which helps to improve welding accuracy.

[0007] Technical solution To achieve the above objectives, the present invention provides the following technical solution: an integrated weld inspection and welding device for electric vehicle components, comprising a base, two multi-stage cylinders symmetrically fixed on the left and right sides of the base via brackets, an electric chuck movably mounted on the output end of the multi-stage cylinders via bearings for fixing tubular parts, a welding torch and a weld inspection head disposed above the middle of the base, a stabilizing mechanism disposed on the middle of the upper surface of the base on the left and right sides of the welding torch for automatically supporting and fixing the docking area of ​​the two tubular parts, an end-face treatment mechanism disposed on the stabilizing mechanism for cleaning and flatness detection of the end face of the tubular parts, and a dual-axis motor fixed on the middle of the upper surface of the base for driving the stabilizing mechanism to rotate the tubular parts.

[0008] In the above technical solution, preferably, the stabilizing mechanism includes two fixed frames symmetrically fixed in the middle of the base and located on the left and right sides of the welding torch, a mounting shell movably mounted on the fixed frames via bearings, an annular block that moves left and right inside the mounting shell, a set of mounting grooves circumferentially and equidistantly formed on the outer surface of the annular block away from the electric chuck, a claw clamp provided in the inner cavity of the mounting groove, and a transmission mechanism provided on the annular block for driving the claw clamp to flip and clamp and fix the tubular part. The claw clamp consists of a claw bar and a claw head. One end of the claw bar is rotatably connected to the inner cavity of the mounting groove via a rotating shaft. The claw head is fixed to the other end of the claw bar, and the end face processing mechanism is located on the claw head.

[0009] In the above technical solution, preferably, the transmission mechanism includes a connecting ring disposed on the side of the annular block away from the electric chuck, a two-section compression spring rod disposed laterally in the inner cavity of the mounting groove, a docking block disposed on the outer surface of the fixed end of the two-section compression spring rod near the jaw clamp for pushing the jaw clamp to flip, a pusher frame disposed between the two-section compression spring rod and the jaw clamp for pushing the jaw clamp to press and fix the outer surface of the tubular part, a ratchet plate disposed on the outer surface of the fixed end of the two-section compression spring rod away from the pusher frame, a locking block slidably connected to the ratchet plate in the mounting groove, two two-section retraction spring rods for connecting the locking block to the pusher frame, and a drive mechanism disposed on the annular block for driving the pusher frame to flip. The connecting ring is rotatably connected to the side of the mounting housing cavity away from the electric chuck via a bearing. The fixed end of the two-section compression spring rod is fixedly connected to the side wall of the connecting ring. A recess is fixedly installed on the outer surface of the two-section compression spring rod between the docking block and the connecting ring. The docking block is rotatably connected to the inner wall of the recess via a rotating shaft. A torsion spring that cooperates with the inner wall of the recess to drive the docking block to rotate and reset is fixedly sleeved on the rotating shaft of the docking block. The middle part of the side wall of the docking block near the connecting ring is movably connected to the inner wall of the recess. The docking block is movably connected to the protruding part of one end of the claw rod. The push frame is rotatably connected to the inner cavity of the mounting groove via a rotating shaft. The fixed end and output end of the two-section compression spring rod are respectively hinged to the outer surface of the push frame and the outer surface of the chuck.

[0010] In the above technical solution, preferably, the driving mechanism includes an air chamber opened on the side of the annular block away from the connecting ring, a sealing ring plate that moves left and right in the air chamber, a sliding groove opened on the side of the mounting groove near the inner ring of the annular block, a sliding block that slides and seals in the sliding groove, an air supply channel opened on one side of the sliding groove and communicating with the air chamber, a docking channel opened on the side wall and bottom surface of the sliding block, a mounting cavity opened on the side of the sliding groove near the connecting ring, a lifting frame that slides and seals in the mounting cavity for driving the push frame to flip, and a limiting mechanism provided on the sliding groove and the sliding block; The output end of the two-section compression spring rod penetrates into the air cavity and is fixedly connected to the side wall of the sealing ring plate. The inner cavity shape of the docking channel is adapted to the inner cavity shape of the air supply channel. One end of the slider penetrates into the mounting groove and abuts against the outer surface of the claw. The inner cavity of the mounting groove is provided with a first spring seat that drives the slider to move out of the groove. The inner cavity of the groove is connected to the inner cavity of the mounting cavity. The outer surface of the annular block near the electric chuck is respectively provided with a one-way air intake valve for introducing air into the air cavity and a solenoid valve for discharging air from the mounting cavity.

[0011] In the above technical solution, preferably, the limiting mechanism includes a limiting channel that communicates with the inner cavity of the slide groove on the side of the annular block near the electric chuck, a slide rod disposed in the limiting channel, and a spring limiting block disposed on the side wall of the slider and movably connected to the inner cavity of the limiting channel; One end of the slide rod is movably connected to the spring limiting block, and the other end of the slide rod is movably connected to the side of the mounting housing cavity near the electric chuck.

[0012] In the above technical solution, preferably, the lifting frame penetrates into the inner cavity of the mounting groove, the push frame has a rectangular channel, the lifting frame is fixedly installed with a pin that is movably connected to the inner cavity of the rectangular channel, and a first compression spring is fixedly installed on the side of the inner cavity of the mounting cavity near the mounting groove, and the other end of the first compression spring is fixedly connected to the lifting frame.

[0013] In the above technical solution, preferably, the outer surface of the annular block has grooves equidistantly spaced around the side near the connecting ring, and a transverse bar penetrating the annular block is arranged in the groove. One end of the transverse bar is fixedly connected to the side wall of the connecting ring, and a second compression spring is movably sleeved on the outer surface of the transverse bar. The two ends of the second compression spring are fixedly connected to the inner cavity of the groove and the side wall of the connecting ring, respectively.

[0014] In the above technical solution, preferably, the end face processing mechanism includes an assembly groove formed on the side wall of the claw head, an assembly shell that slides laterally in the assembly groove, a contact wheel that is rotatably mounted on the bottom surface of the inner cavity of the assembly shell for contacting the end face of the tubular part, a resistor ring fixed on one side of the inner cavity of the assembly groove by a support rod, a sliding resistor fixed in the middle of the side wall of the assembly shell and in contact with the inner cavity of the resistor ring, a resistance sensor fixed on the side wall of the assembly shell, a cleaning brush roller that is rotatably mounted in the assembly shell for cleaning iron filings from the end face of the tubular part, a linkage wheel fixedly sleeved on the rotating shaft of the cleaning brush roller and movably connected to the outer ring of the contact wheel, magnets symmetrically and detachably mounted in the inner cavity of the assembly shell for adsorbing iron filings by bolts, a spiral track circumferentially formed in the inner cavity of the mounting shell, and a guide block fixed on the outer surface of the annular block and adapted to the spiral track. The assembly slot contains symmetrically fixed second spring seats for driving the assembly shell toward the end face of the tubular part. The cleaning brush roller consists of a roller body and a soft brush strip that can be detachably wrapped around the outer surface of the roller body via Velcro. Both the outer surface of the roller body and the back of the soft brush strip are provided with anti-slip textures.

[0015] In the above technical solution, preferably, hydraulic cylinders are vertically fixedly installed on the top surfaces of the two fixed frames through connecting frames, and connecting plates are fixedly installed on the bottom ends of the output shafts of the hydraulic cylinders. The welding torch and the weld detection head are respectively fixedly connected to the front and rear sides of the bottom surface of the connecting plate.

[0016] In the above technical solution, preferably, the left and right output shaft end faces of the dual-axis motor are respectively fixedly fitted with drive wheels, the top of the outer ring of the drive wheel is movably connected to the bottom plate of the outer surface of the mounting shell, and both the outer ring of the drive wheel and the outer surface of the mounting shell are provided with anti-slip texture.

[0017] Beneficial effects Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention utilizes a multi-stage cylinder, electric chuck, and stabilizing mechanism in a coordinated design. Initially, the jaws are in a retracted state, and the electric chuck coaxially clamps and fixes the outer surface of the tubular part's end. Activating the multi-stage cylinders on both sides causes their output ends to extend horizontally, pushing the electric chuck to guide the tubular part through the inner cavity of the annular block. This brings the end face of the tubular part abutting against the side of the jaws. As the tubular part moves, it pushes the jaws, which in turn move the annular block. When the end faces of the two tubular parts are close together and about to touch, the annular block, during its movement, automatically drives the jaws to flip open and then retract via a transmission mechanism, compressing the contact area of ​​the tubular part's outer end surface. This fixed design facilitates support and limitation at the joint of two tubular parts, improving coaxiality and providing good positioning constraints for the workpiece. This helps improve welding accuracy, reduces the likelihood of misalignment and uneven weld gaps during welding, and results in better welding performance. It solves the problems of existing technologies where supporting and limiting the joint of two tubular parts is difficult; these technologies rely solely on hydraulic cylinders to drive the two tubular parts for compression and positioning, and use rotating transmission rollers to rotate and weld them using friction. This often leads to eccentricity and tilting at the joint, low coaxiality, poor positioning constraints, reduced welding accuracy, and the tendency for misalignment and uneven weld gaps, ultimately lowering the welding effect.

[0018] 2. This invention, through the coordinated design of the mounting shell, annular block, claw clamp, and end-face processing mechanism, allows the annular block to move while the tubular part moves, driven by the claw clamp. During this movement, the annular block, in conjunction with the guide block and the spiral track, rotates while moving laterally. This rotation causes the claw clamp to rotate circumferentially, which in turn causes the contact wheel to roll along the end face of the part. If there is a protrusion or depression on the end face of the part, the mounting shell will slide laterally along the mounting groove under the action of the second spring seat. This causes the sliding resistor fixed to the side wall of the mounting shell to move along the inner cavity of the resistance ring. The resistance value of the sliding resistor changes with the moving position. The resistance sensor collects the resistance signal in real time and transmits it to the external device control system. If the resistance change is within a preset threshold, the end face flatness is determined to be acceptable. If the resistance value changes beyond the threshold, the external control system will trigger an alarm, prompting the operator to replace the tubular part. As the contact wheel rolls with the part's end face, its outer ring drives the linkage wheel to rotate via friction. The linkage wheel is fixedly mounted on the cleaning brush roller shaft, which in turn drives the cleaning brush roller to rotate at high speed, brushing away oxide scale, iron filings, and other impurities from the part's end face. Simultaneously, the magnet inside the assembly housing generates a magnetic field, attracting the brushed iron filings to its surface. This automatically detects the flatness of the tubular part's end face to be welded, facilitating timely replacement of defective tubular parts and improving the yield rate. It also automatically cleans and collects iron filings adhering to the end face of the tubular part, further improving welding quality and product quality, and preventing iron filings from affecting welding quality in the joint gap. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the base, multi-stage cylinder, electric chuck, dual-axis motor, hydraulic cylinder, welding torch, weld inspection head, and drive wheel of the present invention. Figure 3 This is a partial front cross-sectional view of the stabilizing mechanism of the present invention; Figure 4 This is a cross-sectional structural diagram of the stabilizing mechanism of the present invention in a clamping and fixed state. Figure 5 This is a side view of the annular block, groove, crossbar, second compression spring, and transmission mechanism of the present invention. Figure 6 This is a front cross-sectional view of the annular block, transmission mechanism, and claw clamp of the present invention. Figure 7 This is a partial front cross-sectional view of the annular block and the driving mechanism of the present invention. Figure 8 This is a partial structural schematic diagram of the transmission mechanism of the present invention; Figure 9 This is a front cross-sectional view of the claw gripper and end face processing mechanism of the present invention.

[0020] In the diagram: 1. Base; 2. Multi-stage cylinder; 3. Electric chuck; 4. Welding torch; 5. Weld inspection head; 6. Stabilizing mechanism; 61. Fixing frame; 62. Mounting shell; 63. Annular block; 64. Mounting groove; 65. Claw clamp; 7. End face treatment mechanism; 71. Assembly groove; 72. Assembly shell; 73. Fitting wheel; 74. Resistance ring; 75. Sliding resistor; 76. Resistance sensor; 77. Cleaning brush roller; 78. Linkage wheel; 79. Magnet; 710. Spiral track; 711. Guide block; 8. Dual-axis motor; 9. Transmission. Mechanism; 91. Connecting ring; 92. Two-stage compression spring rod; 93. Docking block; 94. Push frame; 95. Ratchet; 96. Locking block; 97. Two-stage retraction spring rod; 10. Drive mechanism; 101. Air chamber; 102. Sealing ring plate; 103. Slide groove; 104. Slider; 105. Air supply channel; 106. Docking channel; 107. Mounting cavity; 108. Lifting frame; 11. Limiting mechanism; 111. Limiting channel; 112. Slide rod; 113. Spring limiting block; 12. Hydraulic cylinder; 13. Drive wheel. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 9 As shown, the present invention provides an integrated weld inspection and welding device for electric vehicle parts, comprising a base 1, two multi-stage cylinders 2 symmetrically fixed on the left and right sides of the base 1 by brackets, an electric chuck 3 with built-in power supply and movably mounted on the output end of the multi-stage cylinders 2 for fixing tubular parts, a welding torch 4 and a weld inspection head 5 disposed above the middle of the base 1, a stabilizing mechanism 6 disposed on the middle of the upper surface of the base 1 on the left and right sides of the welding torch 4 for automatically supporting and fixing the docking area of ​​the two tubular parts, an end face treatment mechanism 7 disposed on the stabilizing mechanism 6 for cleaning and flatness detection of the end face of the tubular parts, and a dual-axis motor 8 fixed on the middle of the upper surface of the base 1 for driving the stabilizing mechanism 6 to rotate the tubular parts.

[0023] The stabilizing mechanism 6 includes two fixed frames 61 symmetrically fixed in the middle of the base 1 on the left and right sides of the welding torch 4, a mounting shell 62 movably mounted on the fixed frames 61 via bearings, an annular block 63 that moves left and right inside the mounting shell 62, a set of mounting grooves 64 circumferentially and equidistantly provided on the outer surface of the annular block 63 away from the electric chuck 3, a claw 65 provided in the inner cavity of the mounting groove 64, and a transmission mechanism 9 provided on the annular block 63 for driving the claw 65 to flip and clamp and fix the tubular part. The claw clamp 65 consists of a claw bar and a claw head. One end of the claw bar is rotatably connected to the inner cavity of the mounting groove 64 via a rotating shaft. The claw head is fixed to the other end of the claw bar. The end face processing mechanism 7 is located on the claw head. The top surfaces of the two fixed frames 61 are vertically fixedly mounted with hydraulic cylinders 12 via connecting frames. The bottom end of the output shaft of the hydraulic cylinders 12 is fixedly mounted with a connecting plate. The welding torch 4 and the weld detection head 5 are fixedly connected to the front and rear sides of the bottom of the connecting plate, respectively. The left and right output shaft end faces of the dual-axis motor 8 are respectively fixedly fitted with drive wheels 13. The top of the outer ring of the drive wheel 13 is movably connected to the bottom plate of the outer surface of the mounting shell 62. Both the outer ring of the drive wheel 13 and the outer surface of the mounting shell 62 are provided with anti-slip textures.

[0024] In use, the jaw 65 is initially in a retracted state. The electric chuck 3 coaxially clamps and fixes the outer surface of the tubular part. The multi-stage cylinders 2 on both sides are activated, and the output ends of the multi-stage cylinders 2 extend horizontally, pushing the electric chuck 3 to drive the tubular part through the inner cavity of the annular block 63, so that the end face of the tubular part abuts against the side of the jaw head of the jaw 65. When the tubular part moves, it can push the jaw 65 to drive the annular block 63 to move. When the end faces of the two tubular parts are close to each other and about to fit together, the annular block 63 can automatically drive the jaw 65 to flip open and then flip and retract during the movement of the transmission mechanism 9 to squeeze and fix the contact area of ​​the outer surface of the tubular part. This facilitates the support and limitation of the joint of the two tubular parts, improves the coaxiality, has a good positioning constraint effect on the workpiece, helps to improve the welding accuracy, and is less likely to produce problems such as misalignment and uneven weld gap during welding, resulting in a good welding effect.

[0025] It should be noted that when the tubular part moves, the pusher 65 drives the annular block 63 to move, and the end face processing mechanism 7 operates automatically. It can automatically detect the flatness of the end face of the tubular part to be welded, which makes it easier for operators to replace defective tubular parts in a timely manner, thus helping to improve the yield rate. At the same time, when the end face processing mechanism 7 is operating, it can automatically clean and collect the iron filings attached to the end face of the tubular part, which can further improve the welding effect and product quality, and prevent the iron filings attached to the end face of the tubular part from affecting the welding effect.

[0026] like Figure 6 , Figure 8As shown, the transmission mechanism 9 includes a connecting ring 91 disposed on the side of the annular block 63 away from the electric chuck 3, a two-section compression spring rod 92 disposed laterally in the inner cavity of the mounting groove 64, a docking block 93 disposed on the outer surface of the fixed end of the two-section compression spring rod 92 near the jaw 65 for pushing the jaw 65 to flip, a pusher frame 94 disposed between the two-section compression spring rod 92 and the jaw 65 for pushing the jaw 65 to press and fix the outer surface of the tubular part, a ratchet plate 95 disposed on the outer surface of the fixed end of the two-section compression spring rod 92 away from the pusher frame 94, a locking block 96 that slides in the mounting groove 64 and is movably connected to the ratchet plate 95, two two-section retractable spring rods 97 for connecting the locking block 96 and the pusher frame 94, and a drive mechanism 10 disposed on the annular block 63 for driving the pusher frame 94 to flip. The connecting ring 91 is rotatably connected to the side of the mounting housing 62 away from the electric chuck 3 via a bearing. The fixed end of the two-section compression spring rod 92 is fixedly connected to the side wall of the connecting ring 91. A recess is fixedly installed on the outer surface of the two-section compression spring rod 92 between the mating block 93 and the connecting ring 91. The mating block 93 is rotatably connected to the inner wall of the recess via a rotating shaft. A torsion spring that cooperates with the inner wall of the recess to drive the mating block 93 to rotate and reset is fixedly sleeved on the rotating shaft of the mating block 93. The middle part of the side wall of the mating block 93 near the connecting ring 91 is movably connected to the inner wall of the recess to facilitate the restriction of the mating block 93. In the direction of rotation, the docking block 93 is movably connected to the protruding part of one end of the claw rod. The push frame 94 is rotatably connected to the inner cavity of the mounting groove 64 through the rotating shaft. The fixed end and the output end of the two-section retractable spring rod 97 are respectively hinged to the outer surface of the push frame 94 and the outer surface of the locking block 96. The outer surface of the annular block 63 has grooves equidistantly spaced around the side near the connecting ring 91. A horizontal bar penetrating the annular block 63 is arranged in the groove. One end of the horizontal bar is fixedly connected to the side wall of the connecting ring 91. A second compression spring is movably sleeved on the outer surface of the horizontal bar. The two ends of the second compression spring are fixedly connected to the inner cavity of the groove and the side wall of the connecting ring 91, respectively.

[0027] In use, when the tubular parts move and push the jaw 65 to drive the annular block 63 to move, as the end faces of the two tubular parts approach each other and are about to fit together, one end of the jaw bar of the jaw 65 contacts and presses against the mating block 93, which can drive the jaw 65 to flip and open, separating the jaw head of the jaw 65 from the end face of the tubular parts. Then, when the end faces of the two tubular parts fit together, the drive mechanism 10 drives the push frame 94 to flip and press the jaw 65, which can push the jaw 65 to flip and retract, automatically pressing and fixing the fitting area of ​​the end outer surface of the tubular parts. At the same time, when the push frame 94 flips, the two-stage retractable spring rod 97 drives the locking block 96 to engage with the ratchet plate 95, which can limit and fix the annular block 63 and the jaw 65 in the horizontal direction.

[0028] like Figure 7 , Figure 8 As shown, the drive mechanism 10 includes an air chamber 101 opened on the side of the annular block 63 away from the connecting ring 91, a sealing ring plate 102 that moves left and right in the inner cavity of the air chamber 101, a sliding groove 103 opened on the side of the mounting groove 64 near the inner ring of the annular block 63, a sliding block 104 that slides and seals in the sliding groove 103, an air supply channel 105 opened on one side of the inner cavity of the sliding groove 103 and communicating with the air chamber 101, a docking channel 106 opened on the side wall and bottom surface of the sliding block 104, a mounting cavity 107 opened on the side of the sliding groove 103 near the connecting ring 91, a lifting frame 108 that slides and seals in the mounting cavity 107 for driving the push frame 94 to flip, and a limiting mechanism 11 provided on the inner cavity of the sliding groove 103 and the sliding block 104. The output end of the two-section compression spring rod 92 penetrates into the air chamber 101 and is fixedly connected to the side wall of the sealing ring plate 102. The inner cavity shape of the docking channel 106 is adapted to the inner cavity shape of the air supply channel 105. One end of the slider 104 penetrates into the mounting groove 64 and abuts against the outer surface of the jaw clamp 65. The inner cavity of the mounting groove 64 is provided with a first spring seat that drives the slider 104 to move outward of the slide groove 103. The inner cavity of the slide groove 103 is connected to the inner cavity of the mounting cavity 107. The outer surface of the annular block 63 is close to the side of the electric chuck 3. A one-way air intake valve for introducing air into the air chamber 101 and a solenoid valve for discharging air from the mounting chamber 107 are respectively provided. The solenoid valve has a built-in gas flow monitoring sensor. The lifting frame 108 penetrates into the inner cavity of the mounting groove 64. A rectangular channel is opened on the push frame 94. A pin rod that is movably connected to the inner cavity of the rectangular channel is fixedly installed on the lifting frame 108. A first compression spring is fixedly installed on the side of the inner cavity of the mounting chamber 107 near the mounting groove 64. The other end of the first compression spring is fixedly connected to the lifting frame 108.

[0029] In use, when the jaw 65 flips open to separate the jaw head from the end face of the tubular part, the jaw bar pushes the slider 104 to move during the flipping and opening process of the jaw 65, so that the docking channel 106 is connected to the air supply channel 105. The elastic force of the two-stage compression spring rod 92 pushes the sealing ring plate 102 to move, which can transport the air in the air chamber 101 through the air supply channel 105, the docking channel 106 and the slide groove 103 to the mounting cavity 107 to push the lifting frame 108 to move. The movement of the lifting frame 108 can drive the push frame 94 to flip and squeeze the jaw 65 through the cooperation of the pin rod and the rectangular channel.

[0030] like Figure 7 As shown, the limiting mechanism 11 includes an annular block 63 with a limiting channel 111 communicating with the inner cavity of the slide groove 103 on the side near the electric chuck 3, a slide rod 112 disposed in the limiting channel 111, and a spring limiting block 113 disposed on the side wall of the slider 104 and movably connected to the inner cavity of the limiting channel 111. One end of the slide rod 112 is movably connected to the spring limiting block 113, and the other end of the slide rod 112 is movably connected to the side of the inner cavity of the mounting housing 62 near the electric chuck 3.

[0031] When in use, as the claw clamp 65 flips open, the claw bar pushes the slider 104 to move. The slider 104 then drives the spring limit block 113 to open and close with the inner cavity of the limit channel 111, which can limit and fix the position of the slider 104, so as to maintain the connection between the docking channel 106 and the gas supply channel 105.

[0032] like Figure 9 As shown, the end face processing mechanism 7 includes an assembly groove 71 opened on the side wall of the claw head, an assembly shell 72 that slides laterally in the assembly groove 71, a contact wheel 73 that is rotatably mounted on the bottom surface of the inner cavity of the assembly shell 72 for contacting the end face of the tubular part, a resistance ring 74 that is fixed to one side of the inner cavity of the assembly groove 71 by a support rod, a sliding resistor 75 that is fixed in the middle of the side wall of the assembly shell 72 and in contact with the inner cavity of the resistance ring 74, a resistance sensor 76 that is fixed on the side wall of the assembly shell 72, a cleaning brush roller 77 that is rotatably mounted in the assembly shell 72 for cleaning iron filings on the end face of the tubular part, a linkage wheel 78 that is fixedly sleeved on the rotating shaft of the cleaning brush roller 77 and movably connected to the outer ring of the contact wheel 73, a magnet 79 that is symmetrically and detachably mounted in the inner cavity of the assembly shell 72 by bolts for adsorbing iron filings, a spiral track 710 that is circumferentially opened in the inner cavity of the mounting shell 62, and a guide block 711 that is fixed on the outer surface of the annular block 63 and adapted to the spiral track 710. The assembly groove 71 has symmetrically fixed second spring seats for driving the assembly shell 72 to approach the end face of the tubular part. The cleaning brush roller 77 consists of a roller body and a soft brush strip that can be detachably wrapped around the outer surface of the roller body by Velcro. This makes it easy for operators to replace and maintain the soft brush strip that has worn out after long-term use. Both the outer surface of the roller body and the back of the soft brush strip are provided with anti-slip textures. When the roller rotates, the friction between the anti-slip textures can drive the soft brush strip to rotate.

[0033] In use, when the tubular part moves, the jaw clamp 65 pushes the annular block 63 to move. During the movement of the annular block 63, under the cooperation of the guide block 711 and the spiral track 710, the annular block 63 can rotate while moving laterally. When the annular block 63 rotates, it can drive the jaw clamp 65 to rotate circumferentially. When the jaw clamp 65 rotates circumferentially, it drives the contact wheel 73 to roll with the end face of the part. During the rolling of the contact wheel 73, if there is a protrusion or depression on the end face of the part, the assembly shell 72 will slide laterally along the assembly groove 71 under the action of the second spring seat. This will drive the sliding resistor 75, which is fixed to the side wall of the assembly shell 72, to move along the inner cavity of the resistance ring 74. The resistance value of the sliding resistor 75 changes with the moving position. The resistance sensor 7... 6. The resistance signal is collected in real time and transmitted to the external equipment control system. If the resistance change is within the preset threshold, the flatness of the end face is deemed qualified and the next step can be carried out. If the resistance change exceeds the threshold, the external equipment control system triggers an alarm to prompt the operator to replace the tubular part. When the contact wheel 73 rolls with the end face of the part, its outer ring drives the linkage wheel 78 to rotate through friction. The linkage wheel 78 is fixedly sleeved on the shaft of the cleaning brush roller 77, thereby driving the cleaning brush roller 77 to rotate at high speed to brush away impurities such as oxide scale and iron filings from the end face of the part. At the same time, the magnet 79 in the inner cavity of the assembly shell 72 generates a magnetic field, which attracts the brushed iron filings to the surface of the magnet 79, preventing the iron filings from affecting the welding quality in the butt joint gap.

[0034] Working principle and usage process of this invention: In use, initially, the jaw clamp 65 is in a retracted state, and the annular block 63, driven by the elastic force of the second compression spring, is located on the side of the inner cavity of the mounting shell 62 near the electric chuck 3. First, the electric chuck 3 coaxially clamps and fixes the outer surface of the end of the tubular part. Then, the multi-stage cylinders 2 on both sides are activated, and the output ends of the multi-stage cylinders 2 extend horizontally, pushing the electric chuck 3 to drive the tubular part through the inner cavity of the annular block 63, so that the end face of the tubular part abuts against the side of the jaw head of the jaw clamp 65. When the tubular part moves, it can push the jaw clamp 65 to move. At the same time, the jaw clamp 65 drives the annular block 63 to move. When the end faces of the two tubular parts are close to each other and about to fit together, the protruding part of one end of the jaw bar contacts and squeezes the mating block 93 during the process of the end face of the tubular part pushing the jaw clamp 65 to move. Under the interaction, it can push the jaw clamp 65 to flip and open, so that the jaw head of the jaw clamp 65 separates from the end face of the tubular part. Then, when the end faces of the two tubular parts fit together, During the flipping and opening of the jaw clamp 65, the jaw rod pushes the slider 104 to move, so that the docking channel 106 is connected to the air supply channel 105. The elastic force of the two-stage compression spring rod 92 pushes the sealing ring plate 102 to move, which can transport the air in the air chamber 101 through the air supply channel 105, the docking channel 106 and the slide groove 103 to the installation cavity 107 to push the lifting frame 108 to move. The movement of the lifting frame 108 can drive the push frame 94 to flip and squeeze the jaw clamp 65 through the cooperation of the pin rod and the rectangular channel. This allows the jaw clamp 65 to automatically squeeze and fix the contact area of ​​the outer surface of the end of the tubular part. At the same time, when the push frame 94 flips, it drives the locking block 96 to engage with the ratchet plate 95 through the two-stage retraction spring rod 97, which can limit and fix the ring block 63 and the jaw clamp 65 in the horizontal direction. This facilitates the support and limitation of the docking point of the two tubular parts, improves the coaxiality, and has a good positioning constraint effect on the workpiece, which helps to improve the welding accuracy. When the tubular part moves, the jaw 65 pushes the annular block 63 to move. During this movement, the annular block 63, in cooperation with the guide block 711 and the spiral track 710, rotates while moving laterally. This rotation causes the jaw 65 to rotate circumferentially. The circumferential rotation of the jaw 65 causes the contact wheel 73 to roll along the end face of the part. If there is a protrusion or depression on the end face of the part during the rolling of the contact wheel 73, the assembly shell 72 will slide laterally along the assembly groove 71 under the action of the second spring seat. This causes the sliding resistor 75, fixed to the side wall of the assembly shell 72, to move along the inner cavity of the resistance ring 74. The resistance value of the sliding resistor 75 changes with the moving position, and the resistance sensor 76... The resistance signal is collected and transmitted to the external device control system. If the resistance change is within the preset threshold, the flatness of the end face is deemed qualified and the next step can be carried out. If the resistance change exceeds the threshold, the external device control system triggers an alarm to prompt the operator to replace the tubular part. When the contact wheel 73 rolls with the end face of the part, its outer ring drives the linkage wheel 78 to rotate through friction. The linkage wheel 78 is fixedly sleeved on the rotating shaft of the cleaning brush roller 77, thereby driving the cleaning brush roller 77 to rotate at high speed to brush off impurities such as oxide scale and iron filings from the end face of the part. At the same time, the magnet 79 in the inner cavity of the assembly shell 72 generates a magnetic field, which attracts the brushed iron filings to the surface of the magnet 79, thus preventing iron filings from affecting the welding quality in the butt joint gap. The position and height of the welding torch 4 and the weld inspection head 5 can be adjusted by the hydraulic cylinder 12, which facilitates welding and weld inspection at the joint of the two tubular parts. The drive wheel 13 is rotated by the dual-axis motor 8, which drives the mounting shell 62 to rotate and weld the tubular parts through the cooperation of the spiral track 710 and the guide block 711, and the ring block 63 and the claw 65.

[0035] After welding is completed, the operator uses an external operating system to activate the solenoid valve. Through its built-in gas flow monitoring sensor, a preset threshold of gas is first discharged from the mounting cavity 107. Once the preset threshold of gas is discharged, the interaction between the elastic force of the first compression spring and the air pressure generated by the remaining air in the mounting cavity 107 drives the lifting frame 108 to move, achieving partial resetting. At this time, the lifting frame 108 causes the push frame 94 to flip and separate from the surface of the jaw clamp 65, while the locking block 96 continues to engage with the ratchet plate 95 under the tension of the two-stage retractable spring rod 97. The clamping and fixing effect of the jaws of the chuck 65 on the outer surface of the tubular part disappears. The operator uses the external operating system to control the electric chuck 3 on one side to separate from the outer surface of the tubular part, and then controls the two multi-stage cylinders 2 to retract, driving the two electric chucks 3 to reset. During the reset and movement of the electric chuck 3 on the other side, the welded tubular part can be removed. Then, the remaining air in the mounting cavity 107 is completely discharged through the solenoid valve. At this time, the elastic force of the first compression spring can drive the lifting frame 108 to move to achieve complete reset. At the same time, the lifting frame 108 drives the push frame 9. 4. Continuing to rotate the two-stage compression spring rod 97 until it is fully retracted, it can push the locking block 96 to separate from the ratchet plate 95. Then, under the elastic force of the second compression spring, it can drive the annular block 63 to reset. During the resetting process of the annular block 63, the output end of the two-stage compression spring rod 92 can be fully extended. After the output end of the two-stage compression spring rod 92 is fully extended, it drives the sealing ring plate 102 and the inner cavity of the annular block 63 to generate negative pressure. This can draw external air into the air chamber 101 through the one-way air intake valve, filling the air chamber 101 with air. When the annular block 63... After the block 63 is fully reset, the inner cavity of the mounting shell 62 is pressed against one end of the slide rod 112, which allows the slide rod 112 to move and push the spring limiting block 113 to separate from the inner cavity of the limiting channel 111. Under the elastic force of the first spring seat, the slider 104 can be driven to move out of the slide groove 103. After the slider 104 moves, the docking channel 106 can be separated from the air supply channel 105 to avoid air leakage in the air chamber 101. At the same time, after the slider 104 moves out of the slide groove 103, it is pressed against the surface of the claw rod, which can push the claw clamp 65 to flip and reset to the retracted state.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated weld inspection welding apparatus for electric vehicle parts, characterized by, The utility model relates to a welding device for pipe fitting, which comprises a base (1), two multi-stage air cylinders (2) symmetrically fixed on the left and right sides of the base (1) through supports, an electric chuck (3) movably mounted on the output end of the multi-stage air cylinder (2) through a bearing and used for fixing a tubular part, a welding torch (4) and a weld seam detection head (5) arranged above the middle of the base (1), a stabilizing mechanism (6) arranged on the upper surface of the base (1) and located on the left and right sides of the welding torch (4) and used for automatically supporting and fixing two pipe fittings at the butt joint area, an end face processing mechanism (7) arranged on the stabilizing mechanism (6) and used for cleaning and flatness detection of the end face of the pipe fitting, and a double-shaft motor (8) fixed on the upper surface of the middle of the base (1) and used for driving the stabilizing mechanism (6) to rotate the pipe fitting.

2. An integrated weld inspection and welding apparatus for electric vehicle parts as claimed in claim 1, wherein: The stabilizing mechanism (6) comprises two fixed frames (61) symmetrically fixed on the middle of the base (1) and located on the left and right sides of the welding torch (4), a mounting shell (62) movably mounted on the fixed frame (61) through a bearing, an annular block (63) moving left and right in the mounting shell (62), a group of installation grooves (64) equidistantly opened in the circumferential direction on the outer surface of the annular block (63) away from the electric chuck (3), a claw clamp (65) arranged in the inner cavity of the installation groove (64), and a transmission mechanism (9) arranged on the annular block (63) and used for driving the claw clamp (65) to flip and clamp and fix the pipe fitting. The claw clamp (65) is composed of a claw rod and a claw head, one end of the claw rod is rotationally connected with the inner cavity of the installation groove (64) through a rotating shaft, the claw head is fixed on the other end of the claw rod, and the end face processing mechanism (7) is located on the claw head.

3. An integrated weld inspection and welding apparatus for electric vehicle parts as claimed in claim 2, wherein: The transmission mechanism (9) comprises a connecting ring (91) arranged on the side of the annular block (63) away from the electric chuck (3), two sections of compression spring rods (92) transversely arranged in the inner cavity of the installation groove (64), an abutting block (93) arranged on the outer surface of the fixed end of the two sections of compression spring rods (92) and close to the side of the claw clamp (65) and used for pushing the claw clamp (65) to flip, a pushing frame (94) arranged between the two sections of compression spring rods (92) and the claw clamp (65) and used for pushing the claw clamp (65) to extrude and fix the outer surface of the pipe fitting, a ratchet plate (95) arranged on the outer surface of the fixed end of the two sections of compression spring rods (92) and away from the pushing frame (94), a clamping block (96) slidingly and movably connected with the ratchet plate (95) in the installation groove (64), two sections of contraction spring rods (97) used for connecting the clamping block (96) and the pushing frame (94), and a driving mechanism (10) arranged on the annular block (63) and used for driving the pushing frame (94) to flip. The connecting ring (91) is rotatably connected with the inner cavity of the mounting shell (62) away from the side of the electric chuck (3) through a bearing, the fixed end of the two-section compression spring rod (92) is fixedly connected with the side wall of the connecting ring (91), the outer surface of the two-section compression spring rod (92) is fixedly installed with a recessed block between the butt joint block (93) and the connecting ring (91), the butt joint block (93) is rotatably connected with the inner wall of the recessed block through a rotating shaft, a torsion spring for driving the butt joint block (93) to rotate and reset is fixedly sleeved on the rotating shaft of the butt joint block (93) and matches the inner wall of the recessed block, the middle part of the side wall of the butt joint block (93) close to the side of the connecting ring (91) is movably connected with the inner wall of the recessed block, the butt joint block (93) is movably connected with the outer convex part of one end of the claw rod, the pushing frame (94) is rotatably connected with the inner cavity of the mounting groove (64) through a rotating shaft, and the fixed end and the output end of the two-section contraction spring rod (97) are hingedly connected with the outer surface of the pushing frame (94) and the outer surface of the clamping block (96) respectively.

4. An integrated weld inspection and welding apparatus for electric vehicle parts as claimed in claim 3, wherein: The driving mechanism (10) comprises a gas cavity (101) opened on the side of the annular block (63) away from the connecting ring (91), a sealing ring plate (102) movably arranged in the gas cavity (101), a sliding groove (103) opened in the inner cavity of the mounting groove (64) close to the inner ring of the annular block (63), a sliding block (104) sealingly sliding in the sliding groove (103), a gas conveying channel (105) opened in the inner cavity of the sliding groove (103) and communicating with the gas cavity (101), a butt joint channel (106) opened in the side wall and the bottom surface of the sliding block (104), a mounting cavity (107) opened on the side of the sliding groove (103) close to the connecting ring (91), a lifting frame (108) sealingly sliding in the mounting cavity (107) and used for driving the pushing frame (94) to flip, and a limiting mechanism (11) arranged in the inner cavity of the sliding groove (103) and on the sliding block (104). The output end of the two-section compression spring rod (92) penetrates into the gas cavity (101) and is fixedly connected with the side wall of the sealing ring plate (102), the inner cavity shape of the butt joint channel (106) is matched with the inner cavity shape of the gas conveying channel (105), one end of the sliding block (104) penetrates into the mounting groove (64) and abuts against the outer surface of the claw clamp (65), the inner cavity of the mounting groove (64) is provided with a first spring seat for driving the sliding block (104) to move outwardly from the sliding groove (103), the inner cavities of the sliding groove (103) and the mounting cavity (107) are communicated, and the outer surface of the annular block (63) close to the side of the electric chuck (3) is respectively provided with a one-way air inlet valve for guiding air into the gas cavity (101) and an electromagnetic valve for discharging air in the mounting cavity (107).

5. An integrated weld inspection and welding apparatus for electric vehicle parts as claimed in claim 4, wherein: The limiting mechanism (11) comprises a limiting channel (111) communicated with the inner cavity of the sliding groove (103) and opened on the side of the annular block (63) close to the motor chuck (3), a sliding rod (112) arranged in the limiting channel (111), and a spring limiting block (113) movably connected with the inner cavity of the limiting channel (111) and arranged on the side wall of the sliding block (104). One end of the sliding rod (112) is movably connected with the spring limiting block (113), and the other end of the sliding rod (112) is movably connected with the inner cavity of the mounting shell (62) close to the motor chuck (3).

6. An integrated weld inspection and welding apparatus for electric vehicle parts as defined in claim 4, wherein: The lifting frame (108) penetrates into the inner cavity of the mounting groove (64), a rectangular channel is opened on the pushing frame (94), a pin rod movably connected with the inner cavity of the rectangular channel is fixedly installed on the lifting frame (108), and a first compression spring is fixedly installed on the inner cavity of the mounting cavity (107) close to the mounting groove (64), and the other end of the first compression spring is fixedly connected with the lifting frame (108).

7. An integrated weld inspection and welding apparatus for electric vehicle parts as defined in claim 3, wherein: A groove is equidistantly opened on the outer surface of the annular block (63) close to the connecting ring (91), a transverse rod penetrating through the annular block (63) is transversely arranged in the groove, one end of the transverse rod is fixedly connected with the side wall of the connecting ring (91), a second compression spring is movably sleeved on the outer surface of the transverse rod, and the two ends of the second compression spring are fixedly connected with the inner cavity of the groove and the side wall of the connecting ring (91) respectively.

8. An integrated weld inspection and welding apparatus for electric vehicle parts as defined in claim 2, wherein: The end face processing mechanism (7) comprises an assembly groove (71) opened on the side wall of the claw head, an assembly shell (72) laterally sliding in the assembly groove (71), a matching wheel (73) rotatably installed in the inner bottom surface of the assembly shell (72) and used for contacting the end face of the tubular part, an electric resistance ring (74) fixed on one side of the inner cavity of the assembly groove (71) through a support rod, a sliding resistance (75) fixed on the side wall of the assembly shell (72) and matched with the inner cavity of the electric resistance ring (74), a resistance sensor (76) fixed on the side wall of the assembly shell (72), a cleaning brush roller (77) rotatably installed in the assembly shell (72) and used for cleaning the iron filings on the end face of the tubular part, a linkage wheel (78) fixedly sleeved on the rotating shaft of the cleaning brush roller (77) and movably connected with the outer ring of the matching wheel (73), a magnet (79) symmetrically and detachably installed in the inner cavity of the assembly shell (72) and used for adsorbing the iron filings, a spiral track (710) circumferentially opened in the inner cavity of the mounting shell (62), and a guide block (711) fixed on the outer surface of the annular block (63) and matched with the spiral track (710). Symmetrically fixed in the inner cavity of the assembly groove (71) are second spring seats used for driving the assembly shell (72) to approach the end face of the tubular part, the cleaning brush roller (77) is composed of a roller body and a soft brush belt detachably wound on the outer surface of the roller body through magic tape, and the outer surface of the roller body and the back surface of the soft brush belt are both provided with anti-slip textures.

9. An integrated weld inspection and welding apparatus for electric vehicle parts as defined in claim 2, wherein: The top surface of the two fixing frames (61) is vertically fixedly provided with a hydraulic cylinder (12), the bottom end of the output shaft of the hydraulic cylinder (12) is fixedly provided with a connecting plate, and the welding gun (4) and the weld detection head (5) are fixedly connected to the front and rear sides of the bottom surface of the connecting plate respectively.

10. An integrated weld inspection and welding apparatus for electric vehicle parts as defined in claim 2, wherein: The end faces of the left and right output shafts of the double-shaft motor (8) are respectively fixedly provided with driving wheels (13), the top of the outer ring of the driving wheel (13) is movably connected to the bottom plate of the outer surface of the mounting shell (62), and the outer ring of the driving wheel (13) and the outer surface of the mounting shell (62) are both provided with anti-skid textures.

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