A welding head

Abstract

This application relates to the field of welding technology, and in particular to a welding head. A welding head includes: a mounting frame; a welding torch mounted on the mounting frame; and an adjustment mechanism including a longitudinal adjustment mechanism, a lateral adjustment mechanism, and a rotation mechanism. The mounting frame is connected to the longitudinal adjustment mechanism via a first sliding component, the longitudinal adjustment mechanism is connected to the lateral adjustment mechanism via a second sliding component, and the lateral adjustment mechanism is connected to the rotation mechanism via a connecting member. The longitudinal movement, lateral movement, and rotation of the welding torch in this application are independently controlled, avoiding the complexity of connections between multiple components and the need for complex algorithms to decouple motion trajectories, thus reducing the difficulty and cost of the control system. Because the movements of the welding torch are independent, damaged components can be replaced or repaired individually, reducing maintenance difficulty and costs.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a welding head. Background Technology

[0002] In modern manufacturing, circumferential welding is a crucial process for connecting core components such as pipes, pressure vessels, and fittings. Its welding quality and efficiency directly determine the safety and service life of the equipment. Pendulum circumferential welding and lateral circumferential welding represent two different spatial trajectory control approaches. Pendulum circumferential welding uses a rotating shaft to drive the welding torch in a pendulum-like reciprocating motion, allowing the arc to have a controllable dwell time on both sides of the bevel, increasing the heat input to the sidewall. Lateral circumferential welding uses a drive mechanism to move the welding torch in a reciprocating translational motion along the width of the bevel (lateral trajectory), combined with a wire feeding mechanism and arc control module, to achieve rapid spread of the deposited metal within the bevel.

[0003] In the existing technology, the overall structure of the welding head used to achieve pendulum circumferential welding and horizontal pendulum circumferential welding is often quite complex, with high manufacturing costs and troublesome maintenance. Utility Model Content

[0004] In view of the shortcomings or problems existing in the prior art, this disclosure provides a welding head with a simple structure and convenient operation and maintenance.

[0005] The technical solution adopted by this disclosure to solve the above-mentioned technical problem is: a welding head, comprising: Mounting rack; A welding torch is mounted on the mounting bracket. The adjustment mechanism includes a longitudinal adjustment mechanism, a lateral adjustment mechanism, and a rotation mechanism; The mounting bracket is connected to the longitudinal adjustment mechanism via a first sliding component, the longitudinal adjustment mechanism is connected to the lateral adjustment mechanism via a second sliding component, and the lateral adjustment mechanism is connected to the rotation mechanism via a connector.

[0006] In a preferred embodiment, the longitudinal adjustment mechanism includes a first housing and a first stepper motor, wherein the output shaft of the first stepper motor is at least partially located within the first housing, and the first sliding assembly is connected to the output shaft of the first stepper motor.

[0007] In a preferred embodiment, the first sliding assembly includes a rib and a first slider. The first slider includes a first connecting part and a second connecting part. The first connecting part is disposed inside the first housing and has a through hole for the output shaft of the first stepper motor to pass through. One side of the rib is connected to the second connecting part, and the other side of the rib is connected to the mounting bracket.

[0008] In a preferred embodiment, the lateral adjustment mechanism includes a second housing and a second stepper motor, with the output shaft of the second stepper motor located at least partially within the second housing, and the second sliding assembly connected to the output shaft of the second stepper motor.

[0009] In a preferred embodiment, the second sliding assembly includes a second slider, the second slider includes a third connecting part and a fourth connecting part, the third connecting part is disposed inside the second housing, the third connecting part is provided with a through hole for the output shaft of the second stepper motor to pass through, and the fourth connecting part is connected to the first housing.

[0010] In a preferred embodiment, the rotating mechanism includes a main body, a rotating part, and an operating part. The rotating part is rotatably disposed on the main body, and the operating part is connected to the rotating part for driving the rotating part to rotate.

[0011] In a preferred embodiment, the connecting member is a connecting flange, and the second housing is connected to the rotating part through the connecting flange. The second housing and the connecting flange rotate synchronously with the rotating part.

[0012] In a preferred embodiment, the system further includes a column, on which a crossbeam is slidably connected, and the rotating mechanism is disposed on the crossbeam.

[0013] In a preferred embodiment, the column is provided with a displacement mechanism, which includes a slider assembly and a first driving member. The slider assembly includes a third slider connected to the crossbeam. The third slider is connected to the drive shaft of the first driving member, which is used to drive the crossbeam to reciprocate along the column axis.

[0014] In a preferred embodiment, the displacement mechanism further includes a screw assembly, the crossbeam is connected to the screw assembly, and the screw assembly is used to drive the crossbeam to reciprocate in the horizontal direction.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the longitudinal movement, lateral movement and rotation of the welding torch in this application are independently controlled, avoiding the complexity of connecting multiple components and the complex algorithm to decouple the motion trajectory, thus reducing the difficulty and cost of the control system; since the movements of the welding torch are independent of each other, the corresponding components can be replaced or repaired individually after damage, reducing the difficulty of maintenance and maintenance costs. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of a welding head according to this application; Figure 2 For this application Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a second schematic diagram of the structure of a welding head according to this application; Figure 4 For this application Figure 3 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the rotating mechanism of this application; Figure 6 This is the third schematic diagram of the structure of a welding head according to this application; Figure 7 This is the fourth schematic diagram of the structure of a welding head according to this application.

[0017] In the diagram: 1. Longitudinal adjustment mechanism; 2. Lateral adjustment mechanism; 3. Welding torch; 4. Rotation mechanism; 5. Mounting frame; 6. First housing; 7. Second housing; 8. Rib plate; 9. Reinforcing plate; 10. Main body; 11. Rotating part; 12. Operating part; 13. Wire feeding assembly; 14. Connecting frame; 15. Wire feeding nozzle; 16. Column; 17. Crossbeam; 18. Screw assembly; 19. Connecting flange; 20. Third slider. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0019] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, the above terms should not be construed as a limitation of this utility model.

[0020] Please refer to Figures 1-4As shown, this application discloses a welding head, including a mounting frame 5, a welding torch 3, and an adjustment mechanism. The welding torch 3 is mounted on the mounting frame 5. The adjustment mechanism includes a longitudinal adjustment mechanism 1, a transverse adjustment mechanism 2, and a rotation mechanism 4. The mounting frame 5 is connected to the longitudinal adjustment mechanism 1 via a first sliding component. The longitudinal adjustment mechanism 1 is connected to the transverse adjustment mechanism 2 via a second sliding component. The transverse adjustment mechanism 2 is connected to the rotation mechanism 4 via a connecting member. Through this technical solution, the longitudinal movement, transverse movement, and rotation of the welding torch 3 are independently controlled, avoiding the complexity of connections between multiple components and the need for complex algorithms to decouple motion trajectories, thus reducing the difficulty and cost of the control system. Since the movements of the welding torch 3 are independent, damaged components can be replaced or repaired individually, reducing maintenance difficulty and costs. The combination of the longitudinal adjustment mechanism 1, the transverse adjustment mechanism 2, and the rotation mechanism 4 enables precise control of the position and attitude of the welding torch 3 with multiple degrees of freedom.

[0021] Specifically, the longitudinal adjustment mechanism 1 includes a first housing 6 and a first stepper motor. The output shaft of the first stepper motor is at least partially located inside the first housing 6. A first sliding assembly is connected to the output shaft of the first stepper motor. By placing the output shaft of the first stepper motor in the first housing 6 and connecting it to the first sliding assembly, the power transmission is internalized, making the structure more compact. The first housing 6 also provides good dust protection for the transmission components, improving their service life. The first sliding assembly includes a rib 8 and a first slider. The first slider includes a first connecting part and a second connecting part. The first connecting part is located inside the first housing 6 and has a through hole for the output shaft of the first stepper motor to pass through. The side of the second connecting part away from the first connecting part extends out of the first housing 6. One side of the rib 8 is connected to the second connecting part, and the other side of the rib 8 is connected to the mounting bracket 5. The rib 8 enhances the bending and torsional stiffness between the first stepper motor and the welding torch 3, effectively suppressing vibration or deformation caused by the force on the welding torch 3 and ensuring the quality of the weld formation. More specifically, a reinforcing plate 9 is bolted to the mounting bracket 5, and the mounting bracket 5 is connected to the rib plate 8 via the reinforcing plate 9. The reinforcing plate 9 avoids stress concentration, preventing the mounting bracket 5 from deforming or being damaged due to long-term stress, and ensuring long-term stability. In addition, for ease of installation, the reinforcing plate 9 is bolted to the rib plate 8, and the rib plate 8 is bolted to the second connecting part.

[0022] Please continue reading. Figure 3 and Figure 4As shown, the lateral adjustment mechanism 2 further includes a second housing 7 and a second stepper motor. The output shaft of the second stepper motor is at least partially located within the second housing 7, and the second sliding assembly is connected to the output shaft of the second stepper motor. Specifically, the second sliding assembly includes a second slider, which includes a third connecting part and a fourth connecting part. The third connecting part is located within the second housing 7 and has a through hole for the output shaft of the second stepper motor to pass through. The fourth connecting part extends out of the second housing 7 on the side away from the third connecting part and is connected to the first housing 6 by bolts. It can be understood that the second slider, through its fourth connecting part, drives the first housing 6 and all its components (including the mounting bracket 5 and the welding torch 3) to reciprocate laterally, thereby achieving lateral circumferential welding.

[0023] Please refer to Figures 3-5 As shown, in one embodiment of this disclosure, the rotating mechanism 4 includes a main body 10, a rotating part 11, and an operating part 12. The rotating part 11 is rotatably mounted on the main body 10, and the operating part 12 is connected to the rotating part 11 for driving the rotating part 11 to rotate. The operating part 12 is a crank, one end of which is connected to the rotating part 11, and the other end of which is provided with a handle. The operator rotates the operating part 12 by holding and rotating the handle, thereby driving the rotating part 11 to rotate. The connecting member is a connecting flange 19, and the second housing 7 is connected to the rotating part 11 through the connecting flange 19. The second housing 7 and the connecting flange 19 rotate synchronously with the rotating part 11. It should be noted that the "pendulum motion" of the welding torch 3 is not generated solely by the rotating mechanism 4, but is achieved through the coordinated operation of the rotating mechanism 4 and the longitudinal adjustment mechanism 1. The rotating mechanism 4 provides the fulcrum and power for rotation, while the longitudinal adjustment mechanism 1 adjusts the height of the welding torch 3 in real time during the swing (compensating for height changes caused by the arc motion). The two work together to achieve pendulum circumferential welding of the workpiece. In addition, the rotating mechanism 4 of this application causes the welding torch 3 to swing left and right in the horizontal plane, that is, the axis of the welding torch 3 swings left and right.

[0024] like Figure 3 , Figure 6 and Figure 7As shown, the system also includes a column 16, on which a crossbeam 17 is slidably connected, and a rotating mechanism 4 is mounted on the crossbeam 17. To facilitate adjustment of the welding torch 3's position on the column 16, a displacement mechanism is provided on the column 16. This displacement mechanism includes a slider assembly and a first driving member. The slider assembly includes a third slider 20 connected to the crossbeam 17, which is connected to the drive shaft of the first driving member. The first driving member drives the crossbeam 17 to move by driving the third slider 20. The first driving member is a motor, used to drive the crossbeam 17 to reciprocate along the axial direction of the column 16. The displacement mechanism also includes a screw assembly 18, connected to the crossbeam 17. The screw assembly 18 drives the crossbeam 17 to reciprocate horizontally. The specific connection structure between the screw assembly 18 and the crossbeam 17 is existing technology and will not be described further here. The column 16, slider assembly, and first driving member provide the welding torch 3 with a large stroke in the vertical direction, while the screw assembly 18 provides a wide range of movement in the horizontal direction. This allows the welding torch 3 to not only make fine adjustments (through the previous rotation mechanism 4, lateral adjustment mechanism 2, and longitudinal adjustment mechanism 1), but also to quickly switch between large workpieces (such as engineering machinery structural parts, ship sections, and large storage tanks), taking into account both large stroke movement and high-precision positioning.

[0025] It should be noted that the welding torch 3 is connected to a wire feeding assembly 13, which includes a connecting frame 14, a wire feeding nozzle 15, and a wire feeding drive. The connecting frame 14 is connected to the welding torch 3 by bolts. The wire feeding nozzle 15 is set on the connecting frame 14 to hold the welding wire. The wire feeding drive is connected to the welding wire and can store the welding wire. The wire feeding drive can drive the welding wire to move toward the welding point to realize automatic supply of welding wire to the welding point.

[0026] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A welding head, characterized in that, include: Mounting bracket (5); The welding torch (3) is mounted on the mounting bracket (5); The adjustment mechanism includes a longitudinal adjustment mechanism (1), a lateral adjustment mechanism (2), and a rotation mechanism (4). The mounting bracket (5) is connected to the longitudinal adjustment mechanism (1) via a first sliding component, the longitudinal adjustment mechanism (1) is connected to the lateral adjustment mechanism (2) via a second sliding component, and the lateral adjustment mechanism (2) is connected to the rotation mechanism (4) via a connector.

2. The welding head of claim 1, wherein, The longitudinal adjustment mechanism (1) includes a first housing (6) and a first stepper motor, the output shaft of the first stepper motor being at least partially located inside the first housing (6), and the first sliding assembly being connected to the output shaft of the first stepper motor.

3. The welding head of claim 2, wherein, The first sliding assembly includes a rib (8) and a first slider. The first slider includes a first connecting part and a second connecting part. The first connecting part is located inside the first housing (6). The first connecting part is provided with a through hole for the output shaft of the first stepper motor to pass through. One side of the rib (8) is connected to the second connecting part, and the other side of the rib (8) is connected to the mounting bracket (5).

4. The welding head of claim 2, wherein, The lateral adjustment mechanism (2) includes a second housing (7) and a second stepper motor, the output shaft of the second stepper motor being at least partially located inside the second housing (7), and the second sliding assembly being connected to the output shaft of the second stepper motor.

5. The welding head of claim 4, wherein, The second sliding component includes a second slider, the second slider includes a third connecting part and a fourth connecting part, the third connecting part is disposed in the second housing (7), the third connecting part is provided with a through hole for the output shaft of the second stepper motor to pass through, and the fourth connecting part is connected to the first housing (6).

6. The welding head of claim 1, wherein, The rotating mechanism (4) includes a main body (10), a rotating part (11) and an operating part (12). The rotating part (11) is rotatably disposed on the main body (10). The operating part (12) is connected to the rotating part (11) for driving the rotating part (11) to rotate.

7. The welding head of claim 5 or 6, wherein, The connecting component is a connecting flange (19). The second housing (7) is connected to the rotating part (11) through the connecting flange (19). The second housing (7) and the connecting flange (19) rotate synchronously with the rotating part (11).

8. The welding head of claim 1, wherein, It also includes a column (16), on which a crossbeam (17) is slidably connected, and the rotating mechanism (4) is located on the crossbeam (17).

9. The welding head of claim 8, wherein, The column (16) is provided with a displacement mechanism, which includes a slider assembly and a first driving member. The slider assembly includes a third slider (20) connected to the crossbeam (17). The third slider (20) is connected to the drive shaft of the first driving member. The first driving member is used to drive the crossbeam (17) to reciprocate along the axial direction of the column (16).

10. The welding head of claim 9, wherein, The displacement mechanism further includes a screw assembly (18), the crossbeam (17) is connected to the screw assembly (18), and the screw assembly (18) is used to drive the crossbeam (17) to reciprocate in the horizontal direction.

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