Multi-axis linkage laser welding head assembly

Abstract

The utility model discloses a multi-axis linkage laser welding head assembly, and relates to the technical field of laser welding, the multi-axis linkage laser welding head assembly comprises a mounting seat, an XYZ three-axis moving mechanism is fixedly mounted at the top of the mounting seat, a rotating mechanism is fixedly mounted at one end of the XYZ three-axis moving mechanism, a laser welding head body is fixedly mounted at one end of the rotating mechanism, and the laser welding head body is fixedly mounted at the other end of the rotating mechanism. According to the multi-axis linkage laser welding head, rotation of the laser welding head body is achieved through the arrangement of the rotating mechanism, so that the multi-axis linkage capability is achieved, the position and posture of the laser welding head body can be accurately adjusted, the requirements of complex curved surfaces and multi-angle welding are met, and the welding quality and efficiency are improved; the rotating ring and the air nozzles can be driven to rotate through the arranged air blowing mechanism, the air blowing angle is changed, the air flow direction is periodically changed through rotating air blowing, the covering radius of a protection area is enlarged, the edge oxidation risk of a molten pool is reduced, and the welding effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, specifically to a multi-axis linkage laser welding head assembly. Background Technology

[0002] Laser welding machines, also known as laser welding machines or laser welding machines, are machines used for laser welding in material processing. During the laser welding process, the precision and flexibility of the welding head movement have a crucial impact on the welding quality.

[0003] Traditional laser welding head assemblies typically only allow movement in a single direction or a limited number of directions, making it difficult to meet the needs of welding complex curved surfaces and multi-angle welding. With the increasing level of industrial automation, higher demands are placed on the multi-axis linkage capabilities of laser welding head assemblies. They need to be able to perform precise movement and attitude adjustments in multiple dimensions to adapt to different welding conditions. Furthermore, shielding gas is often blown during laser welding for protection. A search revealed a blower assembly and laser welding head with Chinese patent publication number CN206952358U. The blower assembly includes a mounting base, an air knife, and an air pipe. The mounting base has a light outlet that faces the protective lens. While this technical solution can spray shielding gas onto the workpiece surface, thereby cooling the processed area and preventing oxidation, the blowing position angle is fixed during use, and the shielding gas coverage is limited by the static airflow distribution, making it difficult to adapt to complex three-dimensional path welding or the dynamic evolution of the molten pool. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a multi-axis linkage laser welding head assembly, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a multi-axis linkage laser welding head assembly, including a mounting base, an XYZ three-axis moving mechanism fixedly mounted on the top of the mounting base, a rotating mechanism fixedly mounted on one end of the XYZ three-axis moving mechanism, a laser welding head body fixedly mounted on one end of the rotating mechanism, and an air blowing mechanism mounted on the outer surface of the rotating mechanism;

[0006] The XYZ three-axis moving mechanism includes an X-axis linear motor fixedly mounted on the top of the mounting base, a Y-axis linear motor fixedly mounted on the movable end of the X-axis linear motor, and a Z-axis linear motor fixedly mounted on the movable end of the Y-axis linear motor.

[0007] The rotating mechanism includes a first mounting plate fixedly installed on the movable end of a Z-axis linear motor, a first servo motor fixedly installed on one side of the first mounting plate, a second mounting plate fixedly connected to the output shaft of the first servo motor, a mounting sleeve fixedly connected to one side of the second mounting plate, and the laser welding head body being installed through the inside of the mounting sleeve.

[0008] Preferably, the outer surface of the mounting sleeve has multiple threaded holes on one side, and the internal threads of the threaded holes are connected to locking bolts for locking the laser welding head body, so as to facilitate locking the laser welding head body.

[0009] Preferably, guide sleeves are fixedly connected to both the top and bottom ends of the mounting sleeve. The guide sleeves are fitted onto the outside of the laser welding head body to facilitate the guidance of the laser welding head body and the installation of the air blowing mechanism.

[0010] Preferably, the air blowing mechanism includes a rotating ring, which is rotatably sleeved on the outside of the guide sleeve located at the bottom via a bearing. A mounting block is fixedly connected to one side of the rotating ring, and an air nozzle is obliquely installed through the interior of the mounting block, which can rotate and blow air onto the welding position.

[0011] Preferably, one end of the jet nozzle is fixedly connected to a connector for easy connection to an external air source.

[0012] Preferably, a second servo motor is fixedly installed on one side of the outer surface of the guide sleeve at the bottom. The output shaft of the second servo motor is fixedly connected to a gear. The outer surface of the rotating ring is provided with a tooth groove that meshes with the gear, which can automatically drive the air nozzle to rotate, thereby changing the blowing angle.

[0013] This invention provides a multi-axis linkage laser welding head assembly. It has the following beneficial effects:

[0014] 1. This multi-axis linkage laser welding head assembly, through the setting of XYZ three-axis moving mechanism and rotating mechanism, not only realizes the linear movement of the welding head body in three-dimensional space, but also realizes the rotation of the laser welding head body through the rotating mechanism, thus possessing multi-axis linkage capability, which can precisely adjust the position and attitude of the laser welding head body to meet the needs of complex curved surfaces and multi-angle welding, improve welding quality and efficiency, and since the laser welding head body is locked and installed by locking bolts, it is convenient for subsequent disassembly and maintenance.

[0015] 2. This multi-axis linkage laser welding head assembly, through the set air blowing mechanism, during the laser welding process, the second servo motor rotates, which drives the rotating ring and air nozzle to rotate through gears and tooth grooves, changing the air blowing angle. The rotating air blowing periodically changes the airflow direction, expands the coverage radius of the protection area, reduces the risk of oxidation at the edge of the molten pool, reduces spatter accumulation, and at the same time promotes the uniform distribution of surface tension of the molten pool, improves the flatness of the weld formation, and improves the welding effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the air blowing mechanism of this utility model.

[0019] In the diagram, 1. Mounting base; 2. Laser welding head body; 3. X-axis linear motor; 4. Y-axis linear motor; 5. Z-axis linear motor; 6. First mounting plate; 7. First servo motor; 8. Second mounting plate; 9. Mounting sleeve; 10. Threaded hole; 11. Guide sleeve; 12. Rotating ring; 13. Mounting block; 14. Air nozzle; 15. Connector; 16. Second servo motor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example:

[0022] like Figures 1 to 3 As shown, a multi-axis linkage laser welding head assembly includes a mounting base 1. An XYZ three-axis moving mechanism is fixedly mounted on the top of the mounting base 1. The XYZ three-axis moving mechanism includes an X-axis linear motor 3 fixedly mounted on the top of the mounting base 1, a Y-axis linear motor 4 fixedly mounted on the movable end of the X-axis linear motor 3, and a Z-axis linear motor 5 fixedly mounted on the movable end of the Y-axis linear motor 4. This mechanism can drive the laser welding head body 2 to move along the XYZ axes.

[0023] A rotating mechanism is fixedly mounted at one end of the XYZ three-axis moving mechanism. The rotating mechanism includes a first mounting plate 6 fixedly mounted on the movable end of the Z-axis linear motor 5. A first servo motor 7 is fixedly mounted on one side of the first mounting plate 6. The output shaft of the first servo motor 7 is fixedly connected to a second mounting plate 8. A mounting sleeve 9 is fixedly connected to one side of the second mounting plate 8. The laser welding head body 2 is installed inside the mounting sleeve 9. Multiple threaded holes 10 are formed on one side of the outer surface of the mounting sleeve 9. Locking bolts for locking the laser welding head body 2 are threaded into the internal threads of the threaded holes 10. The rotation of the first servo motor 7 drives the laser welding head body 2 to rotate, enabling laser welding operations at different angles. It possesses multi-axis linkage capability, allowing precise adjustment of the position and orientation of the laser welding head body 2, meeting the needs of complex curved surfaces and multi-angle welding, thus improving welding quality and efficiency. Furthermore, since the laser welding head body 2 is locked in place by locking bolts, subsequent disassembly and maintenance are convenient.

[0024] Guide sleeves 11 are fixedly connected to both the top and bottom of the mounting sleeve 9. The guide sleeves 11 are fitted over the outside of the laser welding head body 2. The guide sleeves 11 facilitate the guidance and protection of the laser welding head body 2, and also facilitate the installation of the air blowing mechanism.

[0025] A laser welding head body 2 is fixedly mounted on one end of the rotating mechanism. An air blowing mechanism is mounted on the outer surface of the rotating mechanism. The air blowing mechanism includes a rotating ring 12, which is rotatably sleeved on the outside of a guide sleeve 11 located at the bottom via a bearing. A mounting block 13 is fixedly connected to one side of the rotating ring 12, and an air nozzle 14 is obliquely mounted through the interior of the mounting block 13. A connector 15 is fixedly connected to one end of the air nozzle 14. A second servo motor 16 is fixedly mounted on one side of the outer surface of the guide sleeve 11 located at the bottom. A gear is fixedly connected to the output shaft of the second servo motor 16, and the outer surface of the rotating ring 12 is provided with tooth grooves that mesh with the gear.

[0026] During laser welding, the nozzle 14 is connected to an external protective gas source via the connector 15, which blows the protective gas toward the welding position. The second servo motor 16 rotates, which drives the rotating ring 12 and the nozzle 14 to rotate through gears and tooth grooves, changing the blowing angle. The rotating blowing expands the coverage radius of the protective area by periodically changing the airflow direction, reducing the risk of oxidation at the edge of the molten pool, reducing spatter accumulation, and promoting uniform distribution of surface tension in the molten pool, improving the flatness of the weld formation, and enhancing the welding effect.

[0027] It should be noted that an operating console is also provided in this technical solution, through which various mechanisms can be controlled. Since it is existing technology, it is not described in detail.

[0028] Working principle: During use, the XYZ three-axis moving mechanism can drive the laser welding head body 2 to move in the XYZ three axes. The rotation of the first servo motor 7 in the rotating mechanism can drive the laser welding head body 2 to rotate, thereby enabling laser welding operations at different angles. It has multi-axis linkage capability and can accurately adjust the position and posture of the laser welding head body 2 to meet the needs of complex curved surfaces and multi-angle welding, thus improving welding quality and efficiency.

[0029] During laser welding, the nozzle 14 is connected to an external protective gas source via the connector 15, which blows the protective gas toward the welding position. The second servo motor 16 rotates, which drives the rotating ring 12 and the nozzle 14 to rotate through gears and tooth grooves, changing the blowing angle. The rotating blowing expands the coverage radius of the protective area by periodically changing the airflow direction, reducing the risk of oxidation at the edge of the molten pool, reducing spatter accumulation, and promoting uniform distribution of surface tension in the molten pool, improving the flatness of the weld formation, and enhancing the welding effect.

[0030] Since the laser welding head body 2 is locked in place by locking bolts, it is convenient for subsequent disassembly and maintenance.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-axis linkage laser welding head assembly, comprising a mounting base (1), characterized in that: The top of the mounting base (1) is fixedly mounted with an XYZ three-axis moving mechanism, one end of the XYZ three-axis moving mechanism is fixedly mounted with a rotating mechanism, one end of the rotating mechanism is fixedly mounted with a laser welding head body (2), and the outer surface of the rotating mechanism is mounted with an air blowing mechanism. The XYZ three-axis moving mechanism includes an X-axis linear motor (3) fixedly installed on the top of the mounting base (1), a Y-axis linear motor (4) fixedly installed on the movable end of the X-axis linear motor (3), and a Z-axis linear motor (5) fixedly installed on the movable end of the Y-axis linear motor (4). The rotating mechanism includes a first mounting plate (6) fixedly installed on the movable end of the Z-axis linear motor (5), a first servo motor (7) fixedly installed on one side of the first mounting plate (6), a second mounting plate (8) fixedly connected to the output shaft of the first servo motor (7), a mounting sleeve (9) fixedly connected to one side of the second mounting plate (8), and the laser welding head body (2) is installed through the inside of the mounting sleeve (9).

2. The multi-axis linkage laser welding head assembly according to claim 1, characterized in that: The mounting sleeve (9) has multiple threaded holes (10) on one side of its outer surface, and the threaded holes (10) are internally threaded with locking bolts for locking the laser welding head body (2).

3. The multi-axis linkage laser welding head assembly according to claim 1, characterized in that: The top and bottom ends of the mounting sleeve (9) are fixedly connected to guide sleeves (11), which are sleeved on the outside of the laser welding head body (2).

4. The multi-axis linkage laser welding head assembly according to claim 3, characterized in that: The blowing mechanism includes a rotating ring (12), which is rotatably sleeved on the outside of the guide sleeve (11) located at the bottom via a bearing. A mounting block (13) is fixedly connected to one side of the rotating ring (12), and an air nozzle (14) is obliquely installed through the interior of the mounting block (13).

5. The multi-axis linkage laser welding head assembly according to claim 4, characterized in that: One end of the jet nozzle (14) is fixedly connected to a connector (15).

6. The multi-axis linkage laser welding head assembly according to claim 4, characterized in that: A second servo motor (16) is fixedly installed on one side of the outer surface of the guide sleeve (11) located at the bottom. The output shaft of the second servo motor (16) is fixedly connected to a gear. The outer surface of the rotating ring (12) is provided with a tooth groove that meshes with the gear.

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