A laser welding module for an industrial robot

Abstract

This invention discloses a laser welding module for an industrial robot, relating to the welding field. It includes a robot body and a product placement platform. The product placement platform is positioned above the robot body to provide a support surface for the product to be welded. A fixing ring is fixed to the outer side of the robot body, and a central welding mechanism is fixed to the center of the fixing ring. Side welding mechanisms are symmetrically arranged on both sides of the central welding mechanism to provide welding in different directions. Movable plates are fixed to the outer ends of the side welding mechanisms. This laser welding module for the industrial robot, through the arrangement of two sets of side welding mechanisms, can simultaneously process welds on both sides. The side welding mechanisms can move in an arc on the fixing ring to adjust their welding positions. Combined with the central welding mechanism, it can weld the center of the product, thus achieving multi-directional welding of the product, resulting in higher welding flexibility and efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a laser welding module for an industrial robot. Background Technology

[0002] Laser welding, as a common product processing technology, is widely used in industrial production. Laser welding modules, in conjunction with relevant control programs or robotic arms, enable machine-controlled welding positions to weld different parts of a product. For example, a laser welding module disclosed in application number CN202121319534.2 on December 24, 2021, uses a first and second transport cylinder arranged perpendicularly to each other, allowing three loading plates to move in two directions. This enables both fixing and moving of the processed parts, ensuring flexible equipment movement. The positioning and limiting plates ensure... This demonstrates that the movement of the fixed lever will not be too large, thus protecting the processed parts; An industrial laser welding robot disclosed in application number CN202221878922.9 on November 29, 2022, through the setting of an intermittent rotation mechanism, under the action of gears, sector gears, and a motor, enables the placement of a circular plate carrying a welding plate to rotate intermittently, thereby facilitating sequential welding operations at multiple welding positions around a circle on the welding plate, eliminating the need for manual adjustment of the welding plate position by workers, resulting in higher welding precision and better welding effects;

[0003] Currently, when laser welding modules weld workpieces using robotic arms, the robotic arms can only adjust the welding point of the welding mechanism within a small range. When processing strip welds, the workpiece needs to be moved manually, which is cumbersome. Misalignment during manual movement can also lead to a decrease in weld quality. Furthermore, a single laser welding module can only process one set of welds at a time. When welding T-shaped workpieces, two moving and flipping operations are required, which reduces welding efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a laser welding module for industrial robots to solve the problems mentioned in the background art, which are that the robotic arm can only adjust the welding point of the welding mechanism within a small range, and when processing strip welds on products, it is necessary to manually move the welding workpiece, which is cumbersome. When the manual movement causes deviation, it will also cause a decrease in weld quality. In addition, a single laser welding module can only process one set of welds at a time.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser welding module for an industrial robot, comprising a body and a product placement platform. The product placement platform is positioned above the body to provide a supporting surface for the welded product. A fixing ring is fixed to the outer side of the body, and a central welding mechanism is fixed to the center of the fixing ring. Side welding mechanisms are symmetrically arranged on both the front and rear sides of the central welding mechanism to provide welding in different directions for the product. A movable plate is fixed to the outer end of each side welding mechanism, and the movable plate has an arc-shaped structure designed to slide between the fixed ring and the fixed ring. The movement of the movable plate controls the movement of the side welding mechanisms. The position is adjusted. A transmission gear meshes with the lower inner side of the movable plate. The rotation of the transmission gear drives the movable plate to move. A mounting shaft is fixed in the middle of the transmission gear and is rotatably mounted inside the machine body. A drive block is fixed below the product placement platform. The drive block and the machine body form a left-right sliding structure. A threaded rod passes through the inside of the drive block. The threaded rod is rotatably mounted inside the machine body and forms a threaded connection with the drive block. The movement of the drive block can be controlled during rotation. A rotary drive mechanism is connected to the left end of the threaded rod. The rotary drive mechanism can independently control the rotation of the threaded rod and the mounting shaft.

[0006] To further optimize this technical solution, both the central welding mechanism and the side welding mechanism are equipped with air blowing protection mechanisms on their outer sides to blow inert gas into the weld joint to prevent oxidation.

[0007] To further optimize this technical solution, the air blowing protection mechanism includes a coaxial cover, a mounting block, a protective gas delivery pipe, a connecting pipe, and a side blowing cover;

[0008] The coaxial cover, fixed to the lower end of the central welding mechanism and the side welding mechanism, provides vertical air blowing to the weld joint;

[0009] Mounting block, fixed to the outside of the coaxial cover;

[0010] A protective gas delivery pipe is installed on the surface of the mounting block to deliver external protective gas;

[0011] A connecting pipe is installed on the surface of the mounting block to connect the mounting block and the coaxial cover;

[0012] The side-blowing hood, installed below the mounting block, provides a side-blowing effect for the central welding mechanism and the side welding mechanism.

[0013] To further optimize this technical solution, the side-blowing cover and the mounting block are connected by a thread, and the mounting block has a movable block inside, and a first spring is provided above the movable block. The movable block has an air guide channel inside, which connects the side-blowing cover and the protective gas delivery pipe. After unscrewing the side-blowing cover, the air blowing of the coaxial cover can be automatically turned on.

[0014] To further optimize this technical solution, a limiting component is provided above the product placement platform, and the limiting component is evenly distributed at the corners of the product placement platform to position the welded parts so that they can move stably with the product placement platform in the future.

[0015] To further optimize this technical solution, the rotary drive mechanism includes a transmission head, a first rotary shaft, a second rotary shaft, a motor, a first friction disc, a connecting ring, a movement control mechanism, and a friction transmission mechanism;

[0016] The transmission head is fixed to the left end of the threaded rod;

[0017] The first rotating shaft is located on the left side of the transmission head;

[0018] The second rotating shaft is installed on the left side of the first rotating shaft to control the rotation of the first rotating shaft, and the second rotating shaft and the first rotating shaft are nested together. The second rotating shaft is rotatably installed inside the machine body.

[0019] The motor is connected to the second rotating shaft to control the rotation of the second rotating shaft;

[0020] The first friction disc is fixed to the right side of the first rotating shaft and is located inside the transmission head. The left side of the first rotating shaft passes through the left side of the transmission head. The rotation of the transmission head is controlled by the contact between the first friction disc and the transmission head.

[0021] The connecting ring is fixed to the surface of the first rotating shaft;

[0022] A movement control mechanism is located on the outside of the connecting ring to control the movement of the connecting ring, so that the connecting ring can drive the first rotating shaft and the first friction disc to move.

[0023] The friction transmission mechanism is located on the outside of the transmission gear and controls the rotation of the transmission gear.

[0024] To further optimize this technical solution, the movement control mechanism includes a connector, a connecting plate, and a telescopic controller;

[0025] The connector is designed to form a rotatable connection between the side of the connecting ring and the connecting ring.

[0026] A connecting plate, fixed to the left side of the connector, controls the movement of the connector;

[0027] The telescopic controller is fixed inside the machine body and connected to the connecting plate to control the movement of the connecting plate.

[0028] To further optimize this technical solution, the friction transmission mechanism includes a third rotating shaft, a fourth rotating shaft, a belt, a second friction disc, and a third friction disc;

[0029] The third rotating shaft is located on the left side of the transmission gear, and a connecting ring is fixed on the surface of the third rotating shaft. The connecting ring is connected to the connecting plate through a connecting head, so that the third rotating shaft and the first rotating shaft can move synchronously.

[0030] The fourth rotating shaft is nested with the third rotating shaft, and the fourth rotating shaft is rotatably installed inside the machine body;

[0031] A belt is positioned on the outside of the fourth rotating shaft, which is connected to the second rotating shaft via the belt.

[0032] The second friction disc is fixed to the right side of the third rotating shaft;

[0033] The third friction disc is located on the left side of the transmission gear. The third friction disc and the second friction disc are in contact with each other and can drive the transmission gear to rotate.

[0034] To further optimize this technical solution, a second spring is provided on the left side of the third friction disc, and a connecting rod is fixed on the right side of the third friction disc. A limit ring is fixed on the right end of the connecting rod. The left surface of the limit ring is in contact with the inner wall of the machine body, which can provide a limiting effect on the rotation of the transmission gear.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] The laser welding module of this industrial robot can simultaneously process the welds on both sides through the setting of two sets of side welding mechanisms. The side welding mechanisms can move in an arc on the fixed ring to adjust their welding position. Together with the central welding mechanism, it can weld the middle of the product, thus realizing welding in multiple directions. The welding flexibility is higher and the welding efficiency is higher. The product placement table can move horizontally within the fixed ring, thereby driving the product to pass through the welding mechanism continuously and stably, so that the weld can be processed continuously without manual movement, improving the quality of subsequent welds.

[0037] The laser welding module of this industrial robot is equipped with a coaxial cover and a side-blowing cover. The coaxial cover and the side-blowing cover can provide different protective gas blowing directions to the welding area to adapt to different processing needs. The coaxial cover automatically opens after the side-blowing cover is removed and automatically closes after the side-blowing cover is installed, making it more convenient to use and adaptable to different weld treatment needs.

[0038] The laser welding module of this industrial robot can drive the transmission head to rotate through the first friction disc. When the first friction disc is disengaged from the transmission head, the second and third friction discs can come into contact, thereby enabling the motor to control the rotation of the transmission gear and adjust the position of the side welding mechanism. This ensures that the adjustment of the side welding mechanism is not synchronized with the movement of the product placement table, resulting in more stable subsequent welding. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0040] Figure 2 This is a side view of the structure of the present invention;

[0041] Figure 3 This is a three-dimensional structural diagram of the side welding mechanism of the present invention;

[0042] Figure 4 This is a schematic diagram of the side section structure of the coaxial cover of the present invention;

[0043] Figure 5 This is a schematic diagram of the side cross-section of the movable block of the present invention;

[0044] Figure 6 This is a schematic diagram of the side section structure of the fixing ring of the present invention;

[0045] Figure 7 This is a schematic diagram of the main cross-sectional structure of the body of the present invention;

[0046] Figure 8 This is a top view of the threaded rod structure of the present invention.

[0047] Figure 9 This is a schematic diagram of the main cross-sectional structure of the drive shaft of the present invention;

[0048] Figure 10 This is a schematic diagram of the three-dimensional structure connecting the third rotating shaft and the transmission gear of the present invention.

[0049] In the diagram: 1. Body; 2. Product placement platform; 3. Limiting component; 4. Fixing ring; 5. Central welding mechanism; 6. Side welding mechanism; 7. Coaxial cover; 8. Mounting block; 9. Protective gas delivery pipe; 10. Connecting pipe; 11. Side blowing cover; 12. Movable block; 13. First spring; 14. Air guide channel; 15. Movable plate; 16. Transmission gear; 17. Mounting shaft; 18. Drive block; 19. Threaded rod; 20. Transmission head; 21. First rotating shaft; 22. Second rotating shaft; 23. Motor; 24. First friction disc; 25. Connecting ring; 26. Connecting head; 27. Connecting plate; 28. Telescopic controller; 29. ​​Third rotating shaft; 30. Fourth rotating shaft; 31. Belt; 32. Second friction disc; 33. Third friction disc; 34. Second spring; 35. Connecting rod; 36. Limiting ring. Detailed Implementation

[0050] 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.

[0051] Please see Figures 1-10 This invention provides a technical solution: a laser welding module for an industrial robot, including a body 1 and a product placement platform 2. The product placement platform 2 is positioned above the body 1 to provide a support surface for the welded product. A fixing ring 4 is fixed to the outer side of the body 1, and a central welding mechanism 5 is fixed to the middle of the fixing ring 4. Side welding mechanisms 6 are symmetrically arranged on the front and rear sides of the central welding mechanism 5 to provide welding in different directions for the product. A movable plate 15 is fixed to the outer end of the side welding mechanism 6, and the movable plate 15 has an arc-shaped structure and is designed to slide between the fixed ring 4 and the fixed ring 4. The position of the side welding mechanism 6 is adjusted by moving the movable plate 15. A transmission gear 16 meshes with the lower inner side of the movable plate 15, and the rotation of the transmission gear 16 drives the movable plate 15. 5. The transmission gear 16 is fixed with a mounting shaft 17 in the middle, and the mounting shaft 17 is rotatably installed inside the machine body 1. The product placement platform 2 is fixed with a drive block 18 below, and the drive block 18 and the machine body 1 form a left and right sliding structure. A threaded rod 19 passes through the inside of the drive block 18. The threaded rod 19 is rotatably installed inside the machine body 1 and forms a threaded connection with the drive block 18. The drive block 18 can be controlled to move when rotating. The left end of the threaded rod 19 is connected to a rotary drive mechanism. The rotary drive mechanism can control the rotation of the threaded rod 19 and the mounting shaft 17 independently. A limiter 3 is set above the product placement platform 2, and the limiter 3 is evenly distributed at the corners of the product placement platform 2 to position the welded parts so that they can move stably with the product placement platform 2 later.

[0052] In use, the product to be welded can be placed on the product placement platform 2. The product to be welded is fixed by a temporary welding point. The product is limited on the product placement platform 2 by the limiting member 3, so that it can move synchronously with the product placement platform 2. Then, the position of the side welding mechanism 6 can be adjusted by controlling the rotation of the transmission gear 16 to move the movable plate 15 and align it with the weld. If the middle part is to be welded, the middle welding mechanism 5 can be used directly. Both the middle welding mechanism 5 and the side welding mechanism 6 are equipped with telescopic devices to control the laser welding head to move to the side of the weld. During welding, the drive block 18 can be moved by controlling the rotation of the threaded rod 19, which in turn moves the product placement platform 2 to weld the product.

[0053] Both the central welding mechanism 5 and the side welding mechanism 6 are equipped with air-blowing protection mechanisms on their outer sides. These mechanisms blow inert gas into the weld joint to prevent oxidation. The air-blowing protection mechanism includes a coaxial cover 7, a mounting block 8, a protective gas delivery pipe 9, a connecting pipe 10, and a side-blowing cover 11. The coaxial cover 7 is fixed to the lower ends of the central welding mechanism 5 and the side welding mechanism 6, providing vertical air blowing to the weld joint. The mounting block 8 is fixed to the outer side of the coaxial cover 7. The protective gas delivery pipe 9 is located on the surface of the mounting block 8 and delivers external protective gas. The connecting pipe 10... A side-blowing cover 11 is installed on the surface of the mounting block 8 to connect the mounting block 8 and the coaxial cover 7. It is installed below the mounting block 8 to provide a side-blowing effect for the central welding mechanism 5 and the side welding mechanism 6. The side-blowing cover 11 and the mounting block 8 are connected by a thread. The mounting block 8 has a movable block 12 inside, and a first spring 13 is installed above the movable block 12. The movable block 12 has an air guide channel 14 inside, which connects the side-blowing cover 11 and the protective gas delivery pipe 9. The air blowing of the coaxial cover 7 can be automatically turned on when the side-blowing cover 11 is unscrewed.

[0054] The protective gas delivery pipe 9 is connected to an external gas delivery device, which can blow protective gas in during welding. When side blowing is required, the gas enters the interior of the gas guide channel 14 through the protective gas delivery pipe 9 and is blown out through the side blow cover 11. At this time, the connecting pipe 10 is blocked, and the gas will not enter the coaxial cover 7, thus realizing the side blowing of protective gas. When the coaxial cover 7 is needed, the side blow cover 11 can be removed and rotated to release the threaded connection between the side blow cover 11 and the mounting block 8. At the same time, the movable block 12 moves downward under the action of the first spring 13, so that the gas guide channel 14 and the protective gas delivery pipe 9 are misaligned. The protective gas can enter the coaxial cover 7 through the connecting pipe 10 to realize coaxial blowing, so as to adapt to the needs of different weld seams.

[0055] The rotary drive mechanism includes a transmission head 20, a first rotating shaft 21, a second rotating shaft 22, a motor 23, a first friction disc 24, a connecting ring 25, a movement control mechanism, and a friction transmission mechanism. The transmission head 20 is fixed to the left end of the threaded rod 19. The first rotating shaft 21 is located to the left of the transmission head 20. The second rotating shaft 22 is installed to the left of the first rotating shaft 21 to control its rotation, and the second rotating shaft 22 and the first rotating shaft 21 form a nested connection. The second rotating shaft 22 is rotatably mounted inside the machine body 1. The motor 23 is connected to the second rotating shaft 22 to control its rotation. The first friction disc 24 is fixed to the right side of the first rotating shaft 21, and the first friction disc 25 is connected to the first rotating shaft 21. A friction disc 24 is located inside the transmission head 20. The left side of the first rotating shaft 21 passes through the left side of the transmission head 20. The rotation of the transmission head 20 is controlled by the contact between the first friction disc 24 and the transmission head 20. A connecting ring 25 is fixed to the surface of the first rotating shaft 21. A movement control mechanism is located outside the connecting ring 25 to control the movement of the connecting ring 25, so that the connecting ring 25 can drive the first rotating shaft 21 and the first friction disc 24 to move. A friction transmission mechanism is located outside the transmission gear 16 to control the rotation of the transmission gear 16. The movement control mechanism includes a connecting head 26, a connecting plate 27, and a telescopic controller 28. The connecting head 26 is located on the side of the connecting ring 25 and forms a rotation between the connecting ring 25 and the connecting ring 25. The connection includes a connecting plate 27, fixed to the left side of the connecting head 26, controlling the movement of the connecting head 26; a telescopic controller 28, fixed inside the body 1 and connected to the connecting plate 27, controlling the movement of the connecting plate 27; and a friction transmission mechanism including a third rotating shaft 29, a fourth rotating shaft 30, a belt 31, a second friction disc 32, and a third friction disc 33. The third rotating shaft 29 is located to the left of the transmission gear 16, and a connecting ring 25 is fixed to the surface of the third rotating shaft 29. The connecting ring 25 is connected to the connecting plate 27 through the connecting head 26, enabling the third rotating shaft 29 and the first rotating shaft 21 to move synchronously. The fourth rotating shaft 30 forms a nested connection with the third rotating shaft 29. The rotating shaft 30 is rotatably installed inside the machine body 1. The belt 31 is set on the outside of the fourth rotating shaft 30. The fourth rotating shaft 30 is connected to the second rotating shaft 22 through the belt 31. The second friction disc 32 is fixed on the right side of the third rotating shaft 29. The third friction disc 33 is set on the left side of the transmission gear 16. The third friction disc 33 and the second friction disc 32 are in contact with each other to drive the transmission gear 16 to rotate. A second spring 34 is set on the left side of the third friction disc 33, and a connecting rod 35 is fixed on the right side of the third friction disc 33. A limit ring 36 is fixed on the right end of the connecting rod 35. The left surface of the limit ring 36 is in contact with the inner wall of the machine body 1, which can provide a limiting effect on the rotation of the transmission gear 16.

[0056] When it is necessary to control the rotation of the threaded rod 19, the motor 23 can be started to drive the second rotating shaft 22 and the first rotating shaft 21 to rotate. The first rotating shaft 21 drives the transmission head 20 to rotate through the first friction disc 24, and the transmission head 20 drives the threaded rod 19 to rotate. At the same time, the second rotating shaft 22 drives the fourth rotating shaft 30 to rotate through the belt 31. At this time, the third friction disc 33 and the second friction disc 32 are not disengaged. When the second spring 34 pushes the third friction disc 33, the limit ring 36 connects with the machine body 1, limiting the rotation of the transmission gear 16 and keeping the position of the side welding mechanism 6 stable. When it is necessary to adjust the position of the side welding mechanism 6, the connecting plate 27 can be moved to the right by the telescopic controller 28, so that the connecting plate 27... 7. The connection between the connector 26 and the connecting ring 25 drives the first rotating shaft 21 and the third rotating shaft 29 to move. The first rotating shaft 21 drives the first friction disc 24 to disengage from the transmission head 20. The third rotating shaft 29 drives the second friction disc 32 and the third friction disc 33 to contact each other and squeeze the third friction disc 33. The third friction disc 33 pushes the limiting ring 36 to move through the connecting rod 35, releasing the connection between the limiting ring 36 and the machine body 1. At this time, the second friction disc 32 can drive the third friction disc 33 and the transmission gear 16 to rotate, adjusting the position of the side welding mechanism 6. The surfaces of the first friction disc 24, the second friction disc 32 and the third friction disc 33 can all be made of rubber or high-friction materials to improve their transmission stability.

[0057] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0058] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser welding module for an industrial robot, comprising a body (1) and a product placement platform (2), wherein the product placement platform (2) is disposed above the body (1) to provide a support surface for the welded product; Its features are: The outer side of the body (1) is fixed with a fixing ring (4), and a middle welding mechanism (5) is fixed in the middle of the fixing ring (4). Side welding mechanisms (6) are symmetrically arranged on the front and rear sides of the middle welding mechanism (5) to provide welding in different directions for the product. The side welding mechanism (6) has a movable plate (15) fixed at its outer end. The movable plate (15) is designed in an arc shape and forms a sliding connection between the fixed ring (4) and the fixed ring (4). The position of the side welding mechanism (6) can be adjusted by moving the movable plate (15). A transmission gear (16) meshes with the lower inner side of the movable plate (15). The movable plate (15) is moved by rotating the transmission gear (16). An installation shaft (17) is fixed in the middle of the transmission gear (16). The installation shaft (17) is rotatably installed inside the machine body (1). A drive block (18) is fixed below the product placement platform (2). The drive block (18) and the machine body (1) form a left-right sliding structure. A threaded rod (19) passes through the inside of the drive block (18). The threaded rod (19) is rotatably installed inside the machine body (1) and forms a threaded connection between the drive block (18). The movement of the drive block (18) can be controlled when rotating. The left end of the threaded rod (19) is connected to a rotary drive mechanism, which can independently control the rotation of the threaded rod (19) and the mounting shaft (17); The rotary drive mechanism includes a transmission head (20), a first rotating shaft (21), a second rotating shaft (22), a motor (23), a first friction disc (24), a connecting ring (25), a movement control mechanism, and a friction transmission mechanism; The transmission head (20) is fixed to the left end of the threaded rod (19); The first rotating shaft (21) is located on the left side of the transmission head (20); The second rotating shaft (22) is installed on the left side of the first rotating shaft (21) to control the rotation of the first rotating shaft (21), and the second rotating shaft (22) and the first rotating shaft (21) form a nested connection. The second rotating shaft (22) is rotatably installed inside the body (1). The motor (23) is connected to the second rotating shaft (22) to control the rotation of the second rotating shaft (22); The first friction disc (24) is fixed to the right side of the first rotating shaft (21) and is located inside the transmission head (20). The left side of the first rotating shaft (21) passes through the left side of the transmission head (20). The rotation of the transmission head (20) is controlled by the contact between the first friction disc (24) and the transmission head (20). The connecting ring (25) is fixed to the surface of the first rotating shaft (21); The movement control mechanism is located on the outside of the connecting ring (25) to control the movement of the connecting ring (25), so that the connecting ring (25) can drive the first rotating shaft (21) and the first friction disc (24) to move. The friction transmission mechanism is located on the outside of the transmission gear (16) and controls the rotation of the transmission gear (16).

2. The laser welding module for an industrial robot according to claim 1, characterized in that: Both the central welding mechanism (5) and the side welding mechanism (6) are equipped with a blowing protection mechanism to blow inert gas into the welding area.

3. The laser welding module for an industrial robot according to claim 2, characterized in that: The air blowing protection mechanism includes a coaxial cover (7), a mounting block (8), a protective gas delivery pipe (9), a connecting pipe (10), and a side blowing cover (11). The coaxial cover (7) is fixed at the lower end of the central welding mechanism (5) and the side welding mechanism (6) to provide vertical air blowing at the weld joint; Mounting block (8) is fixed to the outside of coaxial cover (7); A protective gas delivery pipe (9) is installed on the surface of the mounting block (8) to deliver external protective gas; A connecting pipe (10) is provided on the surface of the mounting block (8) to connect the mounting block (8) and the coaxial cover (7); The side-blowing hood (11) is installed below the mounting block (8) to provide a side-blowing effect for the central welding mechanism (5) and the side welding mechanism (6).

4. The laser welding module for an industrial robot according to claim 3, characterized in that: The side-blowing hood (11) and the mounting block (8) are connected by a thread, and the mounting block (8) has a movable block (12) inside, and a first spring (13) is provided above the movable block (12). The movable block (12) has an air guide channel (14) inside, which connects the side-blowing hood (11) and the protective gas delivery pipe (9).

5. The laser welding module for an industrial robot according to claim 1, characterized in that: The product placement platform (2) is provided with a limiting member (3) above it, and the limiting member (3) is evenly distributed at the corners of the product placement platform (2).

6. The laser welding module for an industrial robot according to claim 1, characterized in that: The movement control mechanism includes a connector (26), a connecting plate (27), and a telescopic controller (28). The connector (26) is provided with a rotating connection between the side of the connecting ring (25) and the connecting ring (25); The connecting plate (27) is fixed to the left side of the connector (26) to control the movement of the connector (26); The telescopic controller (28) is fixed inside the body (1) and connected to the connecting plate (27) to control the movement of the connecting plate (27).

7. The laser welding module for an industrial robot according to claim 6, characterized in that: The friction transmission mechanism includes a third rotating shaft (29), a fourth rotating shaft (30), a belt (31), a second friction disc (32), and a third friction disc (33). The third rotating shaft (29) is located on the left side of the transmission gear (16), and a connecting ring (25) is fixed on the surface of the third rotating shaft (29). The connecting ring (25) is connected to the connecting plate (27) through the connecting head (26), so that the third rotating shaft (29) and the first rotating shaft (21) can move synchronously. The fourth rotating shaft (30) and the third rotating shaft (29) are nested together, and the fourth rotating shaft (30) is rotatably installed inside the body (1); A belt (31) is set on the outside of the fourth rotating shaft (30), which is connected to the second rotating shaft (22) via the belt (31); The second friction disc (32) is fixed to the right side of the third rotating shaft (29); The third friction disc (33) is located on the left side of the transmission gear (16). The third friction disc (33) and the second friction disc (32) are in contact with each other and can drive the transmission gear (16) to rotate.

8. The laser welding module for an industrial robot according to claim 7, characterized in that: A second spring (34) is provided on the left side of the third friction disc (33), and a connecting rod (35) is fixed on the right side of the third friction disc (33). A limit ring (36) is fixed on the right end of the connecting rod (35). The left side surface of the limit ring (36) is in contact with the inner wall of the machine body (1), which can provide a limiting effect on the rotation of the transmission gear (16).

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