A welding device of a round tube and sleeve welding production line

Abstract

The present application relates to the technical field of round tube and shaft sleeve welding, in particular to a welding device of a round tube and shaft sleeve welding production line. It comprises a group assembly, the group assembly comprises a slidingly arranged top sleeve shaft; a clamping assembly, the clamping assembly comprises a slidingly arranged driving clamp jaw and a driven clamp jaw, the driving clamp jaw and the driven clamp jaw are used for clamping the round tube; a clamping assembly, the clamping assembly comprises a rotationally arranged electric chuck, the axis of the top sleeve shaft and the axis of the electric chuck are collinear with the symmetry axis of the driving clamp jaw and the driven clamp jaw; a feeding assembly, the feeding assembly comprises a movably arranged shaft sleeve frame and a shaft sleeve rolling in the shaft sleeve frame, the shaft sleeve frame drives the shaft sleeve to be sleeved on the top sleeve shaft, the top sleeve shaft is used for pushing the shaft sleeve and the round tube to be grouped; a welding assembly, the welding assembly comprises a movably arranged welding gun, the welding gun is used for welding the shaft sleeve and the round tube; through the above technical scheme, the present application solves the problem of low precision of manual grouping of shaft sleeve and round tube concentricity, which leads to low welding precision.

Description

Technical Field

[0001] This invention relates to the field of round tube and bushing welding technology, specifically a welding device for a round tube and bushing welding production line. Background Technology

[0002] Welded round tube bushings are mainly used in scenarios that require torque transmission, load bearing, or precise positioning. Welded round tube bushings can achieve local functional enhancement and save materials to reduce costs.

[0003] Currently, the welding of round tubes and bushings is done manually. Before welding, the round tube and bushing need to be assembled to ensure their concentricity and perpendicularity. Manual assembly can easily cause the round tube or bushing to wobble, resulting in low assembly accuracy, which in turn affects the welding accuracy and the performance of the round tube and bushing. Summary of the Invention

[0004] In order to solve the problems in related technologies, the present invention provides a welding device for a round tube and bushing welding production line. This device solves the problem that the low precision of manual assembly affects the subsequent welding and the performance of the welded product.

[0005] To solve the above problems, the following technical solutions are provided: The present invention provides a welding apparatus for a circular tube and bushing welding production line, comprising: A pair of components, the pair of components including a slidably disposed top sleeve shaft; A clamping assembly, comprising a slidingly disposed active jaw and a driven jaw, wherein the active jaw and the driven jaw are disposed opposite to each other and slide in opposite directions, and the active jaw and the driven jaw are used to clamp a circular tube; A clamping assembly includes a rotatably mounted electric chuck for clamping and rotating a circular tube. The axis of the top sleeve shaft and the axis of the electric chuck are both collinear with the axis of symmetry of the driving jaw and the driven jaw. A feeding assembly, comprising a movable bushing frame and a bushing that rolls within the bushing frame, the bushing frame being movable in both vertical and horizontal directions; The bushing bracket drives the bushing to be sleeved on the top sleeve shaft, and the top sleeve shaft is used to push the bushing to assemble with the round tube; A welding assembly, comprising a movably mounted welding torch for welding the bushing and the round tube.

[0006] The above scheme, through the arrangement of assembly and clamping components, allows the round tube to be welded to be horizontally transported to the clamping components via a transport mechanism. The round tube passes sequentially through the active gripper, the driven gripper, and the electric chuck. The electric chuck clamps the round tube, and the active and driven grippers move towards the round tube synchronously, holding the round tube in place. The active and driven grippers hold the round tube in the middle, ensuring their axes of symmetry are collinear with the axis of the round tube. The top sleeve slides towards the round tube, and the feeding assembly moves the sleeve to the top. At the sleeve shaft, the top sleeve shaft is inserted into the sleeve, and the sleeve is fitted onto the top sleeve shaft. The feeding assembly retracts, and the top sleeve shaft continues to approach the round tube, pushing the sleeve and the round tube to assemble. At this time, the axes of the sleeve and the round tube are collinear. The welding torch moves to the sleeve and the round tube to perform welding. After welding, the assembly and clamping assembly retract, and the welded round tube sleeve is removed. The above steps are repeated to continue welding. The top sleeve shaft drives the sleeve and the clamping assembly to clamp the round tube for assembly, making the axes of the sleeve and the round tube collinear, ensuring the concentricity of the sleeve and the round tube welding, thereby ensuring welding accuracy.

[0007] Furthermore, the assembly, the feeding assembly, and the welding assembly are all provided with a drive mechanism. The drive mechanism is provided with a stepper motor and a lead screw arranged along its axial direction, and the output shaft of the stepper motor is connected to the lead screw. The top sleeve shaft is sleeved on the lead screw via a sliding plate and slides on the lead screw; the driving mechanism drives the top sleeve shaft to slide along its axial direction. An oil injector is installed on the skateboard.

[0008] The above solution uses a drive mechanism to convert the axial motion of the motor-driven lead screw into radial motion, thereby moving the assembly assembly, the feeding assembly, and the welding assembly. The assembly assembly moves the bushing to assemble with the round tube, the feeding assembly moves the bushing to fit onto the top sleeve shaft, and the welding assembly moves the welding gun to the round tube and bushing for precise welding.

[0009] Furthermore, the clamping assembly also includes a feeding cylinder, a mounting bracket connected to the output shaft of the feeding cylinder, and a clamping cylinder mounted on the mounting bracket. The output shaft of the clamping cylinder is connected to the active gripper in sequence through a vertical push plate and an active slider. The active slider slides horizontally on the mounting bracket. The mounting bracket is also rotatably connected to a synchronous gear, and the active slider is provided with a horizontal upper rack that meshes with the synchronous gear.

[0010] The above solution uses a clamping component and a feeding cylinder to move the mounting frame, allowing the active gripper to move closer to or further away from the assembly component, thus enabling the loading and unloading of round tubes.

[0011] Furthermore, the driven gripper is sequentially connected to a vertical driven slider and a horizontal lower rack. The driven slider slides horizontally on the mounting bracket, and the lower rack meshes with the synchronous gear and is located below the upper rack.

[0012] The above solution uses a clamping cylinder to drive the active slider to slide on the mounting frame, thereby pushing the upper rack to slide on the synchronous gear. The synchronous gear meshes with the upper rack and rotates, thereby driving the lower rack to slide. The upper and lower racks move in opposite directions, thereby driving the driven slider and driven gripper to move in the opposite direction to the active slider, thus achieving the clamping or releasing of the round tube.

[0013] Furthermore, the electric chuck is connected to the feeding cylinder via a connecting plate. A vertical material-blocking cylinder is provided on the end of the connecting plate that is connected to the electric chuck and is away from the electric chuck. The output shaft of the material-blocking cylinder is connected to a baffle, which is used to abut against the round tube and prevent the round tube from moving.

[0014] The above solution uses a baffle. After the round tube passes through the electric chuck, the baffle is pushed by the baffle cylinder to move vertically. The baffle abuts against the round tube, blocking the transport mechanism from continuing to transport the round tube. The round tube stops moving. At this time, the electric chuck and the active and driven grippers hold the round tube, avoiding unstable clamping during the movement of the round tube and causing scratches on the surface of the round tube. After the clamping components hold the round tube, the baffle cylinder drives the baffle to retract.

[0015] Furthermore, the clamping assembly also includes a speed reducer, which is connected to the mounting bracket and has a drive gear connected to its output shaft. The outer wall of the electric chuck is provided with a reduction gear that meshes with the drive gear, and the speed reducer drives the electric chuck to rotate.

[0016] The above solution uses a speed reducer to drive the drive gear to rotate. The drive gear meshes with the reduction gear, thereby driving the electric chuck to rotate. The electric chuck drives the round tube and bushing to rotate, which facilitates the welding of the welding components.

[0017] Furthermore, an inclined plate is provided inside the bushing frame, the bushing rolls on the inclined plate, and an opening is provided on the side of the bushing frame near the top sleeve shaft; The feeding assembly also includes a support frame and a drive mechanism and a lifting platform connected in sequence with the support frame. The output shaft of the lifting platform is connected to the bottom end of the drive mechanism, and the lifting platform drives the drive mechanism to move in the vertical direction. The elevator is provided with vertical guide shafts on both sides, the top of the guide shafts is connected to the elevator, and the bottom of the guide shafts slides within the support frame. The bushing is sleeved on the lead screw and slides on the lead screw. The drive mechanism drives the bushing to move horizontally in a direction close to or away from the top sleeve shaft.

[0018] The above solution, through the setting of a drive mechanism and a lifting platform, allows the lifting platform to drive the drive mechanism and the bushing frame to move vertically, while the drive mechanism drives the bushing frame to move horizontally, making the axis of the bushing collinear with the axis of the top sleeve shaft. This allows the top sleeve shaft to be inserted into the bushing, so that the bushing is fitted onto the top sleeve shaft. At this time, the drive mechanism and the lifting platform drive the bushing frame to retract. The bushing slides down the inclined plate under its own gravity towards the end closer to the top sleeve shaft. The feeding component realizes automatic feeding of the bushing without manual assistance, thus improving feeding efficiency.

[0019] Furthermore, the welding assembly also includes a fixing base, on which a bakelite board and an induction coil are sequentially connected via the driving mechanism. The driving mechanism drives the induction coil to move horizontally in a direction close to or away from the top sleeve shaft, which is used to heat the round tube. The fixed base is also provided with multiple drive mechanisms that move in different directions, and one of the drive mechanisms holds the welding torch through a clamp.

[0020] The above scheme uses an induction coil. When the induction coil is energized, it heats up. The drive mechanism moves the induction coil close to the round tube and preheats the round tube. After the round tube is heated, it is easier to assemble and weld with the bushing. The bakelite board is insulated and heat-resistant, thus protecting the drive mechanism. Multiple drive mechanisms that move in different directions drive the welding gun to move in the up, down, left, right, front, and back directions, so as to accurately reach the welding point between the round tube and the bushing for welding.

[0021] Furthermore, it also includes a base, on which the assembly, clamping, locking, feeding, and welding components are all mounted. The mounting bracket, connecting plate, support bracket, and fixing seat are all connected to the base, and the assembly is mounted on the base via the driving mechanism. The assembly, clamping assembly, and locking assembly are arranged sequentially along the length of the base, and the feeding assembly and welding assembly are respectively located on both sides between the assembly and locking assembly.

[0022] The above solution uses a base to provide support for the assembly, clamping, and locking components, ensuring their stable operation.

[0023] Furthermore, a control box is also provided on the base, and the control box is electrically connected to the assembly assembly, the clamping assembly, the locking assembly, the feeding assembly and the welding assembly respectively.

[0024] The above solution also uses a control box to automate the assembly of the round tube and the bushing, which is highly efficient and accurate.

[0025] The above solution has the following advantages: The welding device of the circular tube and bushing welding production line of the present invention includes an assembly assembly, a clamping assembly, a locking assembly, a feeding assembly, a welding assembly, and a control box. The circular tube to be welded passes through the clamping assembly. A stop cylinder pushes a baffle to prevent the circular tube from moving further. A clamping cylinder pushes the active and driven jaws to move and clamp the circular tube. The baffle retracts. A feeding cylinder drives the circular tube into an electric chuck, which clamps the circular tube. A drive mechanism moves an induction coil close to the circular tube. The induction coil is energized to heat the circular tube. A lifting platform and a drive mechanism move the bushing frame and bushing between the top sleeve shaft and the circular tube. The end of the top sleeve shaft... The sleeve is inserted into the round tube. The lifting mechanism and drive mechanism move the bushing frame away, and the top sleeve shaft moves the bushing to continue moving and assembling with the round tube. The drive mechanism drives the welding torch to accurately reach the welding point between the bushing and the round tube for welding. The electric chuck drives the round tube and the bushing to rotate. After welding, the assembly and welding components retract, and the clamping and locking components release the round tube. The welded round tube and bushing are transported away by the transport mechanism, and the above steps are repeated for welding. The top sleeve shaft drives the bushing and the clamping components to clamp the round tube for assembly, so that the axis of the bushing and the round tube are collinear, ensuring the concentricity of the bushing and the round tube welding, thereby ensuring the welding accuracy. Attached Figure Description

[0026] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the welding device in a production line for welding round tubes and bushings. Figure 2 for Figure 1 The left view; Figure 3 This is a structural diagram of a pair of components; Figure 4 This is a schematic diagram of the clamping assembly. Figure 5 for Figure 4 Enlarged view of point A; Figure 6 This is a schematic diagram of the clamping assembly. Figure 7 for Figure 6 The right view; Figure 8 This is a structural diagram of the feeding assembly; Figure 9 This is a schematic diagram of the welding assembly.

[0027] Explanation of reference numerals in the attached drawings: 1. Assembly assembly; 11. Top sleeve shaft; 12. Slide plate; 13. Oil injector; 2. Clamping assembly; 21. Driving gripper; 22. Driven gripper; 23. Clamping cylinder; 231. Push plate; 232. Driving slider; 233. Driven slider; 24. Mounting bracket; 25. Synchronizing gear; 26. Upper rack; 27. Lower rack; 28. Feeding cylinder; 3. Clamping assembly; 31. Electric chuck; 311. Reduction gear; 32. Connecting plate; 3 3. Material-stopping cylinder; 34. Baffle; 35. Reducer; 351. Drive gear; 4. Feeding assembly; 41. Bushing frame; 411. Bushing; 412. Inclined plate; 413. Opening; 42. Lifting machine; 43. Guide shaft; 44. Support frame; 5. Welding assembly; 51. Welding torch; 52. Induction coil; 53. Fixed seat; 531. Clamp; 532. Bakelite board; 6. Drive mechanism; 61. Stepper motor; 62. Lead screw; 7. Base; 8. Control box. Detailed Implementation

[0028] 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.

[0029] In specific embodiment 1, such as Figures 1-9 As shown, the welding device for the round tube and bushing welding production line of the present invention includes: an assembly assembly 1, a clamping assembly 2, a locking assembly 3, a feeding assembly 4, a welding assembly 5, a drive mechanism 6, a base 7, and a control box 8. The control box 8 is electrically connected to and drives the assembly assembly 1, the clamping assembly 2, the locking assembly 3, the feeding assembly 4, the welding assembly 5, and the drive mechanism 6. The assembly assembly 1, the clamping assembly 2, the locking assembly 3, the feeding assembly 4, the welding assembly 5, the drive mechanism 6, and the control box 8 are all mounted on the base 7.

[0030] like Figure 3As shown, the assembly 1 includes a slidably disposed top sleeve shaft 11, the end of which is tower-shaped with a gradually decreasing diameter. The top sleeve shaft 11 can be fitted with different bushings 411. The assembly 1 is mounted on the base 7 via a drive mechanism 6. The drive mechanism 6 is equipped with a stepper motor 61 and a lead screw 62 arranged along its axial direction. The output shaft of the stepper motor 61 is connected to the lead screw 62. The top sleeve shaft 11 is fitted onto the lead screw 62 via a slide plate 12 and slides on the lead screw 62. The drive mechanism 6 drives the top sleeve shaft 11 to slide along its axial direction, and the stepper motor 61 drives the lead screw 62 to rotate. Thus, the slide plate 12 drives the top sleeve shaft 11 to slide horizontally on the lead screw 62. An oil injector 13 is provided on the slide plate 12. The oil injector 13 achieves lubrication balance by controlling the amount of oil injected.

[0031] like Figure 4 As shown, the clamping assembly 2 includes a slidingly disposed active gripper 21 and a driven gripper 22. The active gripper 21 and the driven gripper 22 are disposed opposite to each other and slide in opposite directions. The active gripper 21 and the driven gripper 22 are used to clamp the round tube. The active gripper 21 and the driven gripper 22 move closer to each other to clamp the round tube and move further away from each other to release the round tube. The clamping assembly 2 also includes a feeding cylinder 28, a mounting frame 24 connected to the output shaft of the feeding cylinder 28, and a clamping cylinder 23 mounted on the mounting frame 24. The output shaft of the clamping cylinder 23 is connected to the active gripper 21 in sequence through a vertical push plate 231 and an active slider 232. The active slider 232 slides horizontally on the mounting frame 24. The mounting frame 24 is vertically mounted on the base 7. The clamping cylinder 23 pushes the push plate 231, thereby driving the active slider 232 and the active gripper 21 to slide on the mounting frame 24.

[0032] like Figure 5 As shown, a synchronous gear 25 is rotatably connected to the mounting bracket 24. A horizontal upper rack 26 is provided on the active slider 232 and meshes with the synchronous gear 25. The driven gripper 22 is sequentially connected to a vertical driven slider 233 and a horizontal lower rack 27. The driven slider 233 slides horizontally on the mounting bracket 24. The lower rack 27 meshes with the synchronous gear 25 and is located below the upper rack 26. The upper rack 26 drives the synchronous gear 25 to rotate, thereby driving the lower rack 27, the driven slider 233 and the driven gripper 22 to slide on the mounting bracket 24.

[0033] It should be noted that the clamping cylinder 23 drives the active slider 232 to slide on the mounting frame 24, thereby pushing the upper rack 26 to slide on the synchronous gear 25. The synchronous gear 25 meshes with the upper rack 26 and rotates, thereby driving the lower rack 27 to slide. The upper rack 26 and the lower rack 27 move in opposite directions, thereby driving the driven slider 233 and the driven gripper 22 to move in the opposite direction to the active slider 232, thus realizing the clamping or releasing of the round tube. The feeding cylinder 28 pushes the mounting frame 24, thereby driving the round tube to approach the assembly 1, realizing the loading and unloading of the round tube.

[0034] like Figure 6 and Figure 7 As shown, the clamping assembly 3 includes a rotatably mounted electric chuck 31, which is used to clamp and rotate the round tube. The axis of the top sleeve shaft 11 and the axis of the electric chuck 31 are both collinear with the axis of symmetry of the active gripper 21 and the driven gripper 22, ensuring the concentricity of the round tube and the bushing 411. The electric chuck 31 is connected to the feeding cylinder 28 through a connecting plate 32, which is vertically mounted on the base 7. A vertical blocking cylinder 33 is provided on the end of the connecting plate 32 that is connected to the electric chuck 31 and away from the electric chuck 31. The output shaft of the blocking cylinder 33 is connected to a baffle 34. The blocking cylinder 33 pushes the baffle 34 to move in the vertical direction. The baffle 34 is used to prevent the round tube from entering the electric chuck 31.

[0035] It should be noted that after the round tube passes through the clamping assembly 2, the blocking cylinder 33 pushes the baffle 34 to move vertically, the baffle 34 abuts against the round tube, the round tube stops moving, the clamping cylinder 23 pushes the active gripper 21 and the driven gripper 22 to move and clamp the round tube, the blocking cylinder 23 drives the baffle 34 to retract, the feeding mechanism 28 pushes the mounting bracket 24 to drive the round tube into the electric chuck 31 and close to the assembly assembly 1, the electric chuck 31 clamps the round tube.

[0036] In this embodiment, the clamping assembly 3 also includes a reducer 35, which is connected to the mounting bracket 24 and the output shaft of the reducer 35 is connected to a drive gear 351. The outer wall of the electric chuck 31 is provided with a reduction gear 311 that meshes with the drive gear 351. The reducer 35 drives the electric chuck 31 to rotate. The reducer 35 drives the drive gear 351 to rotate, and the drive gear 351 meshes with the reduction gear 311 to drive the electric chuck 31 to rotate. The electric chuck 31 drives the round tube and the bushing 411 to rotate, which facilitates the welding of the welding assembly 5.

[0037] It should be noted that a locking gear is provided between the electric chuck 31 and the connecting plate 32. The locking gear is rotatably connected to the connecting plate 32 through a slewing bearing. A locking assembly is provided on the connecting plate, which includes a locking cylinder and a rack. The output shaft of the locking cylinder is connected to the rack. The locking cylinder pulls the rack to engage with the locking gear, thereby stopping the locking gear and the electric chuck 31 from rotating, which facilitates the spot welding of round tubes.

[0038] like Figure 8As shown, the feeding assembly 4 includes a movable bushing frame 41 and a bushing 411 that rolls inside the bushing frame 41. The bushing frame 41 can move in both vertical and horizontal directions. The bushing frame 41 drives the bushing 411 to be fitted onto the top sleeve shaft 11. The top sleeve shaft 11 is used to push the bushing 411 to assemble with the round tube. An inclined plate 412 is provided inside the bushing frame 41. The bushing 411 rolls on the inclined plate 412 under its own weight. An opening 413 is provided on the side of the bushing frame 41 near the top sleeve shaft 11. The bushing 411 slides towards the top sleeve shaft 11 under its own weight until it reaches the opening 413. The top sleeve shaft 11 takes the bushing 411 off from the opening 413, thus realizing automatic feeding.

[0039] The feeding assembly 4 also includes a support frame 44 and a drive mechanism 6 and a lift 42 connected in sequence to the support frame 44. The support 44 is mounted on the base 7. The output shaft of the lift 42 is connected to the bottom end of the drive mechanism 6. The lift 42 drives the drive mechanism 6 to move in the vertical direction. Vertical guide shafts 43 are provided on both sides of the lift 42. The top end of the guide shaft 43 is connected to the lift 42, and the bottom end of the guide shaft 43 slides in the support frame 44. The bushing frame 41 is sleeved on the lead screw 62 and slides on the lead screw 62. The drive mechanism 6 drives the bushing frame 41 to move horizontally in the direction close to or away from the top sleeve shaft 11.

[0040] It should be noted that the lifting mechanism 42 drives the drive mechanism 6 and the bushing frame 41 to move vertically, and the guide shaft 43 plays a guiding and supporting role. The drive mechanism 6 drives the bushing frame 41 to move horizontally, so that the axis of the bushing 411 is collinear with the axis of the top sleeve shaft 11, so that the top sleeve shaft 11 can be inserted into the bushing 411 and the bushing 411 is fitted on the top sleeve shaft 11. At this time, the drive mechanism 6 and the lifting mechanism 42 drive the bushing frame 41 to leave the top sleeve shaft 11.

[0041] like Figure 9 As shown, the welding assembly 5 includes a movably mounted welding torch 51, which is used to weld the bushing 411 and the round tube. The welding assembly 5 also includes a fixed base 53, which is mounted on the base 7. The fixed base 53 is connected in sequence to a bakelite board 532 and an induction coil 52 via a drive mechanism 6. The drive mechanism 6 drives the induction coil 52 to move horizontally in the direction of approaching or moving away from the top sleeve shaft 11. The top sleeve shaft 11 is used to heat the round tube. The fixed base 53 is also provided with multiple drive mechanisms 6 that move in different directions. One drive mechanism 6 clamps the welding torch 51 via a clamp 531.

[0042] It should be noted that the induction coil 52 heats up after being energized, and the drive mechanism 6 drives the induction coil 52 to approach the round tube and preheat the round tube. After the round tube is heated, it is easier to assemble and weld with the bushing 411. The bakelite board 532 is insulated and heat-resistant, thus protecting the drive mechanism 6. Multiple drive mechanisms 6 moving in different directions drive the welding gun 51 to move in the up, down, left, right and back directions, so as to accurately reach the welding point between the round tube and the bushing 411 for welding.

[0043] In specific embodiment 2, the difference between this embodiment and embodiment 1 is that the pairing component 1, clamping component 2 and clamping component 3 are arranged sequentially along the length direction of the base 7, and the feeding component 4 and welding component 5 are respectively arranged on both sides between the pairing component 1 and the clamping component 3.

[0044] The base 7 is also equipped with a control box 8, which is electrically connected to the assembly component 1, the clamping component 2, the locking component 3, the feeding component 4, and the welding component 5.

[0045] During operation, the round tube to be welded is passed through the clamping assembly 2 to the electric chuck 31. The blocking cylinder 33 pushes the baffle 34 to rise, blocking the round tube from moving further. The clamping cylinder 23 pushes the active slider 232 to move the active gripper 21. The upper rack 26 meshes and slides on the synchronous gear 25. The synchronous gear 25 drives the lower rack 27 to slide. The lower rack 27 drives the driven slider 233 and the driven gripper 22 to slide. The active gripper 21 and the driven gripper 22 approach and clamp the round tube. The blocking cylinder 33 drives the baffle 34 to fall. The feeding cylinder 28 pushes the mounting bracket 24, thereby driving the round tube into the electric chuck 31 and close to the assembly assembly 1. The electric chuck 31 clamps the round tube.

[0046] The drive mechanism 6 moves the induction coil 52 closer to the circular tube, heating the tube. The elevator 42 moves the bushing frame 41 vertically, aligning the axis of the bushing 411 at the opening 413 with the axis of the top sleeve shaft 11. The drive mechanism 6 then moves the bushing frame 41 horizontally, bringing it closer to the top sleeve shaft 411, ensuring the axis of the bushing 411 at the opening 413 is coaxial with the axis of the top sleeve shaft 11. The drive mechanism 6 then causes the top sleeve shaft 11 to slide into the bushing 411, and the elevator 42 lowers the bushing frame 41. The drive mechanism 6 drives the bushing frame 41 away from the top sleeve shaft 11. The top sleeve shaft 11 drives the bushing 411 to continue moving and stop after assembling with the round tube. Multiple drive mechanisms 6 drive the welding torch 51 to accurately reach the welding point between the bushing 411 and the round tube to perform spot welding, so that the round tube and the bushing 411 are connected. The clamping assembly 2 releases the round tube. The reducer 35 drives the drive gear 351 to rotate. The drive gear 351 drives the reduction gear 311 to rotate, thereby driving the electric chuck 35 to rotate. The round tube and the bushing 411 rotate in the electric chuck 35, and the welding torch 51 completes the welding of the round tube and the bushing 411.

[0047] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0048] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and the obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A welding apparatus for a circular tube and bushing welding production line, characterized in that, include: The assembly (1) includes a slidably disposed top sleeve shaft (11). The clamping assembly (2) includes a slidingly disposed active jaw (21) and a driven jaw (22). The active jaw (21) and the driven jaw (22) are disposed opposite to each other and slide in opposite directions. The active jaw (21) and the driven jaw (22) are used to clamp a round tube. The clamping assembly (3) includes a rotatably mounted electric chuck (31) for clamping and rotating a round tube. The axis of the top sleeve shaft (11) and the axis of the electric chuck (31) are collinear with the axis of symmetry of the active gripper (21) and the driven gripper (22). The feeding assembly (4) includes a movable bushing frame (41) and a bushing (411) that rolls within the bushing frame (41). The bushing frame (41) can move in both the vertical and horizontal directions. The bushing bracket (41) drives the bushing (411) to be sleeved on the top sleeve shaft (11), and the top sleeve shaft (11) is used to push the bushing (411) to assemble with the round tube; Welding assembly (5), the welding assembly (5) includes a movable welding torch (51), the welding torch (51) being used to weld the bushing (411) and the round tube; The assembly (1), the feeding assembly (4) and the welding assembly (5) are all provided with a drive mechanism (6). The drive mechanism (6) is provided with a stepper motor (61) and a lead screw (62) arranged in its axial direction. The output shaft of the stepper motor (61) is connected to the lead screw (62). The top sleeve shaft (11) is sleeved on the lead screw (62) via a sliding plate (12) and slides on the lead screw (62). The driving mechanism (6) drives the top sleeve shaft (11) to slide along its axial direction. An inclined plate (412) is provided inside the bushing frame (41), the bushing (411) rolls on the inclined plate (412), and an opening (413) is provided on the side of the bushing frame (41) near the top sleeve shaft (11). The feeding assembly (4) also includes a support frame (44) and a drive mechanism (6) and a lift (42) connected in sequence to the support frame (44). The output shaft of the lift (42) is connected to the bottom end of the drive mechanism (6), and the lift (42) drives the drive mechanism (6) to move in the vertical direction. The elevator (42) is provided with vertical guide shafts (43) on both sides. The top end of the guide shaft (43) is connected to the elevator (42), and the bottom end of the guide shaft (43) slides in the support frame (44). The bushing bracket (41) is sleeved on the lead screw (62) and slides on the lead screw (62). The driving mechanism (6) drives the bushing bracket (41) to move horizontally in a direction close to or away from the top sleeve shaft (11). The welding assembly (5) also includes a fixing seat (53), which is connected in sequence to a bakelite board (532) and an induction coil (52) via the driving mechanism (6). The driving mechanism (6) drives the induction coil (52) to move horizontally in a direction close to or away from the top sleeve shaft (11), which is used to heat the round tube. The fixed base (53) is also provided with a plurality of drive mechanisms (6) that move in different directions, and one of the drive mechanisms (6) clamps the welding gun (51) through a clamp (531). It also includes a base (7), and the assembly (1), the clamping assembly (2), the locking assembly (3), the feeding assembly (4) and the welding assembly (5) are all disposed on the base (7); The assembly (1), the clamping assembly (2) and the locking assembly (3) are arranged sequentially along the length of the base (7), and the feeding assembly (4) and the welding assembly (5) are respectively located on both sides between the assembly (1) and the locking assembly (3).

2. The welding apparatus for the round tube and bushing welding production line as described in claim 1, characterized in that, An oiler (13) is provided on the slide plate (12).

3. The welding apparatus of the round tube and bushing welding production line as described in claim 2, characterized in that, The clamping assembly (2) further includes a feeding cylinder (28), a mounting bracket (24) connected to the output shaft of the feeding cylinder (28), and a clamping cylinder (23) mounted on the mounting bracket (24). The output shaft of the clamping cylinder (23) is connected to the active gripper (21) in sequence through a vertical push plate (231) and an active slider (232). The active slider (232) slides horizontally on the mounting bracket (24). The mounting bracket (24) is also rotatably connected to a synchronous gear (25), and the active slider (232) is provided with a horizontal upper rack (26) that meshes with the synchronous gear (25).

4. The welding apparatus for the round tube and bushing welding production line as described in claim 3, characterized in that, The driven gripper (22) is connected in sequence to a vertical driven slider (233) and a horizontal lower rack (27). The driven slider (233) slides horizontally on the mounting bracket (24). The lower rack (27) meshes with the synchronous gear (25) and is located below the upper rack (26).

5. The welding apparatus for the round tube and bushing welding production line as described in claim 3, characterized in that, The electric chuck (31) is connected to the feeding cylinder (28) via a connecting plate (32). The connecting plate (32) is connected to the electric chuck (31) and a vertical blocking cylinder (33) is provided on one end away from the electric chuck (31). The output shaft of the blocking cylinder (33) is connected to a baffle (34). The baffle (34) is used to abut against the round tube and block the round tube from moving.

6. The welding apparatus for the round tube and bushing welding production line as described in claim 5, characterized in that, The clamping assembly (3) also includes a speed reducer (35), which is connected to the mounting bracket (24) and the output shaft of the speed reducer (35) is connected to a drive gear (351). The outer wall of the electric chuck (31) is provided with a reduction gear (311) that meshes with the drive gear (351). The speed reducer (35) drives the electric chuck (31) to rotate.

7. The welding apparatus for the round tube and bushing welding production line as described in claim 6, characterized in that, The mounting bracket (24), the connecting plate (32), the support bracket (44) and the fixing seat (53) are all connected to the base (7), and the assembly (1) is mounted on the base (7) via the driving mechanism (6).

8. The welding apparatus for the round tube and bushing welding production line as described in claim 7, characterized in that, The base (7) is also provided with a control box (8), which is electrically connected to the assembly (1), the clamping assembly (2), the locking assembly (3), the feeding assembly (4) and the welding assembly (5).

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