A laser welding processing mechanism

Abstract

The utility model relates to laser welding processing technical field, concretely discloses a kind of laser welding processing mechanism. The laser welding processing mechanism includes mounting bracket, is provided with laser head subassembly, wire feeding subassembly and swing drive subassembly on mounting bracket, wire feeding subassembly is connected in laser head subassembly side;Swing drive subassembly includes rotation setting on the pivot of mounting bracket, one end of pivot is connected with laser head subassembly, the other end of pivot is connected with swing arm, swing arm is connected with swing arm drive part that it is driven to rotate around the center line of pivot reciprocating;The end of swing arm away from pivot is provided with swing arm limiting subassembly. The laser welding processing mechanism can be realized in welding process laser head reciprocating swing along weld width direction to reach a flexible seam searching purpose, improve the welding quality of weld.

Description

Technical Field

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

[0002] Laser welding is a highly efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding with a wire feeding mechanism is a commonly used method. This mechanism levels the welding wire and continuously feeds it to the laser head, where the laser radiation energy melts the wire, creating a weld on the workpiece surface. Laser welding technology is widely used in aerospace, shipbuilding, and automotive manufacturing due to its wide range of applications, high efficiency, and low wear.

[0003] In existing technologies, welding is mostly performed using a fixed laser head. For example, utility model patent CN 212634686U discloses a wire-feeding laser welding machine, including a welding platform and a laser and wire feeding mechanism located above the welding platform. During operation, the workpiece to be welded is moved by rotating the welding platform; the wire feeding mechanism continuously feeds wire to the laser head of the laser, and the laser head welds the curved edge of the workpiece. However, in actual use, it has been found that when using this fixed laser head method, it is difficult to ensure that the welding is aligned with the center line of the weld, thus affecting the weld quality. Summary of the Invention

[0004] The purpose of this invention is to propose a laser welding processing mechanism that enables the laser head to oscillate back and forth along the width of the weld during the welding process to achieve flexible weld seam searching and improve the welding quality of the weld seam.

[0005] To achieve this objective, the present invention adopts the following technical solution: A laser welding processing mechanism includes a mounting frame, on which a laser head assembly, a wire feeding assembly, and a swing drive assembly are disposed. The wire feeding assembly is connected to one side of the laser head assembly. The swing drive assembly includes a rotating shaft rotatably disposed on the mounting frame. One end of the rotating shaft is connected to the laser head assembly, and the other end of the rotating shaft is connected to a swing arm. The swing arm is connected to a swing arm drive member that drives it to reciprocate around the center line of the rotating shaft. A swing arm limiting assembly is disposed at the end of the swing arm opposite to the rotating shaft.

[0006] Furthermore, a groove is provided on the bottom surface of the swing arm, and a floating joint is installed in the groove. The floating joint is connected to the driving end of the swing arm drive component.

[0007] Furthermore, the swing arm limiting assembly includes an upper limit block and a lower limit block arranged vertically; one end of the swing arm is located between the upper limit block and the lower limit block.

[0008] Furthermore, the mounting bracket is connected to a mounting box with mounting holes, the laser head assembly is connected to one side of the mounting box, the swing arm and the swing arm drive are disposed inside the mounting box, and the rotating shaft is rotatably mounted in the mounting holes through bearings and bearing seats.

[0009] Furthermore, the wire feeding assembly includes a first mounting base connected to the laser head assembly. The first mounting base is connected to a guide sleeve. A guide shaft is slidably fitted inside the guide sleeve. The lower end of the guide shaft is connected to a wire tube fixing block and a wire tube connected to the wire tube fixing block. The upper end of the guide shaft is connected to a movable shaft that is movably mounted on the first mounting base. A spring is provided between the lower end of the movable shaft and the first mounting base.

[0010] Furthermore, the wire tube fixing block has several mounting holes arranged side by side, and the lower end of the guide shaft is connected to one of the mounting holes.

[0011] Furthermore, it also includes a pressure roller assembly located on one side of the laser head assembly; the pressure roller assembly includes a second mounting base connected to the mounting frame, the second mounting base is provided with a lifting frame and a lifting drive component for driving the lifting frame to move up and down, and the lower end of the lifting frame is rotatably provided with a pressure roller.

[0012] Furthermore, the central axis of the pressure roller is set at an angle to the horizontal plane.

[0013] Furthermore, the second mounting base is provided with a sliding guide structure for guiding the lifting frame to slide up and down.

[0014] Furthermore, the mounting bracket is equipped with two proportional control valves, and the two proportional control valves are signal-connected to the swing arm drive component.

[0015] The beneficial effects of this utility model are as follows: The laser welding processing mechanism of this utility model uses a pressure roller assembly to roll and hold the plate to be welded, a wire feeding assembly to continuously feed the laser head assembly, and a swing arm drive to drive the swing arm to reciprocate around the center line of the rotating shaft, so that the rotating shaft reciprocates around its own center line, thereby driving the laser head assembly and the wire feeding assembly to swing back and forth along the width direction of the weld seam with the weld seam center line as the center, thereby achieving the purpose of flexible seam searching during the welding process and improving the welding quality of the weld seam. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a laser welding processing mechanism provided by this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of a laser welding processing mechanism provided by this utility model from another angle.

[0018] Figure 3 This is a side view of a laser welding processing mechanism provided by this utility model. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1 to 3 As shown, a laser welding processing mechanism includes a mounting frame 1, on which a laser head assembly 2, a wire feeding assembly 3, a swing drive assembly, and a pressure roller assembly 6 are mounted. The laser head assembly 2 includes a laser generator and a laser head; the wire feeding assembly 3 is connected to one side of the laser generator; the pressure roller assembly 6 is located on one side of the laser head assembly 2 and connected to the mounting frame 1, used to hold and fix the plate to be welded; the swing drive assembly drives the laser head assembly 2 and the wire feeding assembly 3 to swing back and forth along the weld width direction with the weld centerline as the center.

[0021] Specifically, in this embodiment, the mounting bracket 1 is connected to a mounting box 5 with mounting holes, and the laser head assembly 2 is connected to one side of the mounting box 5. The swing drive assembly includes a rotating shaft 41 rotatably mounted in the mounting hole via bearings and bearing seats. One end of the rotating shaft 41 is connected to the laser generator, and the other end of the rotating shaft 41 is connected to a swing arm 42. The swing arm 42 is connected to a swing arm drive member 43 that drives it to reciprocate around the center line of the rotating shaft 41. In addition, a swing arm limiting assembly 44 is provided at the end of the swing arm 42 opposite to the rotating shaft 41. The swing arm 42, the swing arm drive member 43, and the swing arm limiting assembly 44 are all disposed within the mounting box 5.

[0022] Furthermore, a groove 421 is provided on the bottom surface of the swing arm 42, and a floating joint 45 is installed in the groove 421. The floating joint 45 is connected to the driving end of the swing arm drive component 43. The swing arm drive component 43 is preferably a vertically arranged cylinder.

[0023] In this embodiment, the swing arm limiting component 44 includes an upper limit block 441 and a lower limit block 442 disposed vertically; one end of the swing arm 42 is located between the upper limit block 441 and the lower limit block 442. In use, the swing amplitude of the swing arm 42 can be limited by the upper limit block 441 and the lower limit block 442, thereby achieving precise control of the swing amplitude of the laser head.

[0024] In this embodiment, as Figure 2As shown, the wire feeding assembly 3 includes a first mounting base 31, which is connected to the side of the laser generator opposite to the mounting box 5. A guide sleeve 32 is connected to the first mounting base 31, and a guide shaft 33 is slidably fitted inside the guide sleeve 32. The lower end of the guide shaft 33 is connected to a wire tube fixing block 34 and a wire tube 35 connected to the wire tube fixing block 34. The upper end of the guide shaft 33 is connected to a movable shaft 36 that is movably mounted on the first mounting base 31, and a spring 37 is provided between the lower end of the movable shaft 36 and the first mounting base 31. By using this wire feeding assembly 3, the impact and vibration during the movement of the welding wire can be reduced, thereby ensuring the stability and accuracy of the wire feeding process.

[0025] Furthermore, the wire tube fixing block 34 has several mounting holes 341 arranged side by side, and the lower end of the guide shaft 33 is connected to one of the mounting holes 341. In use, the distance between the wire tube 35 and the laser head can be adjusted by connecting the lower end of the guide shaft 33 to different mounting holes 341.

[0026] In this embodiment, as Figure 1 As shown, the pressure roller assembly 6 includes a second mounting base 61 connected to the mounting frame 1. The second mounting base 61 is equipped with a lifting frame 62 and a lifting drive component 63 that drives the lifting frame 62 to move up and down. A pressure roller 64 is rotatably mounted on the lower end of the lifting frame 62. The central axis of the pressure roller 64 is set at an angle to the horizontal plane. The lifting drive component 63 is preferably a cylinder. In use, driven by the lifting drive component 63, the lifting frame 62 moves downward, causing the pressure roller 64 to move downward as well, thus pressing the plate to be welded. During the movement of the plate, the pressure roller 64 rolls in contact with the surface of the plate.

[0027] Furthermore, the second mounting base 61 is provided with a sliding guide structure for guiding the lifting frame 62 to slide up and down. This sliding guide structure can be a sliding rail and a slider that are in sliding fit, or it can be a guide groove formed on the second mounting base 61.

[0028] In this embodiment, two proportional control valves 7 are provided on the mounting bracket 1, and these two proportional control valves 7 are signal connected to the swing arm drive component 43.

[0029] This utility model discloses a laser welding processing mechanism. In use, the pressure roller assembly 6 rolls and holds the plate to be welded, the wire feeding assembly 3 continuously feeds wire to the laser head, and the swing arm drive 43 drives the swing arm 42 to reciprocate around the center line of the rotating shaft 41. This reciprocating rotation of the rotating shaft 41 causes the laser head assembly 2 and the wire feeding assembly 3 to swing back and forth along the width direction of the weld seam with the weld seam center line as the center. This achieves the purpose of flexible seam searching during the welding process and improves the welding quality of the weld seam.

[0030] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A laser welding processing mechanism, characterized in that, The device includes a mounting frame (1), on which a laser head assembly (2), a wire feeding assembly (3), and a swing drive assembly are mounted. The wire feeding assembly (3) is connected to one side of the laser head assembly (2). The swing drive assembly includes a rotating shaft (41) rotatably mounted on the mounting frame (1). One end of the rotating shaft (41) is connected to the laser head assembly (2), and the other end of the rotating shaft (41) is connected to a swing arm (42). The swing arm (42) is connected to a swing arm drive member (43) that drives it to reciprocate around the center line of the rotating shaft (41). A swing arm limiting assembly (44) is provided at the end of the swing arm (42) that is away from the rotating shaft (41).

2. The laser welding processing mechanism according to claim 1, characterized in that, The bottom surface of the swing arm (42) is provided with a groove (421), and a floating joint (45) is installed in the groove (421). The floating joint (45) is connected to the driving end of the swing arm drive (43).

3. The laser welding processing mechanism according to claim 1, characterized in that, The swing arm limiting assembly (44) includes an upper limit block (441) and a lower limit block (442) arranged vertically; one end of the swing arm (42) is located between the upper limit block (441) and the lower limit block (442).

4. A laser welding processing mechanism according to any one of claims 1-3, characterized in that, The mounting bracket (1) is connected to a mounting box (5) with mounting holes. The laser head assembly (2) is connected to one side of the mounting box (5). The swing arm (42) and the swing arm drive (43) are disposed in the mounting box (5). The rotating shaft (41) is rotatably mounted in the mounting hole through a bearing and a bearing seat.

5. The laser welding processing mechanism according to claim 1, characterized in that, The wire feeding assembly (3) includes a first mounting base (31) connected to the laser head assembly (2). The first mounting base (31) is connected to a guide sleeve (32). A guide shaft (33) is slidably fitted inside the guide sleeve (32). The lower end of the guide shaft (33) is connected to a wire tube fixing block (34) and a wire tube (35) connected to the wire tube fixing block (34). The upper end of the guide shaft (33) is connected to a movable shaft (36) that is movably mounted on the first mounting base (31). A spring (37) is provided between the lower end of the movable shaft (36) and the first mounting base (31).

6. The laser welding processing mechanism according to claim 5, characterized in that, The wire tube fixing block (34) has several mounting holes (341) arranged side by side, and the lower end of the guide shaft (33) is connected to one of the mounting holes (341).

7. The laser welding processing mechanism according to claim 1, characterized in that, It also includes a pressure roller assembly (6) located on one side of the laser head assembly (2); the pressure roller assembly (6) includes a second mounting base (61) connected to the mounting frame (1), the second mounting base (61) is provided with a lifting frame (62) and a lifting drive component (63) for driving the lifting frame (62) to move up and down, and a pressure roller (64) is rotatably provided at the lower end of the lifting frame (62).

8. A laser welding processing mechanism according to claim 7, characterized in that, The central axis of the pressure roller (64) is set at an angle to the horizontal plane.

9. A laser welding processing mechanism according to claim 7, characterized in that, The second mounting base (61) is provided with a sliding guide structure for guiding the lifting frame (62) to slide up and down.

10. A laser welding processing mechanism according to claim 1, characterized in that, The mounting bracket (1) is provided with two proportional control valves (7), and the two proportional control valves (7) are connected to the swing arm drive (43) by signal.

Images