Full-automatic laser welding manual-automatic all-in-one machine

Abstract

The utility model relates to the technical field of welding, and discloses a full-automatic laser welding manual-automatic all-in-one machine which comprises a control case, a controller is fixedly installed on the top of the control case, an air-cooled laser is arranged in the control case, a laser welding head is arranged at the output end of the air-cooled laser, and the laser welding head is connected with the controller. And a bearing frame is arranged on the right side of the control case. According to the full-automatic laser welding manual and automatic all-in-one machine, through the air guide assembly, a pipeline draught fan drives external air to enter the air collecting box through an impurity filtering net plate in the welding process, and smoke generated in the welding operation process passes through the impurity filtering net plate along with the air and enters the air collecting box; smoke mixed gas in the gas collecting box is driven by the pipeline fan to enter the purification equipment through an external pipeline to be treated, the probability of smoke dissipation in the welding process is greatly reduced, pollution to the environment in the welding process is effectively reduced, and therefore the practicability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a full-automatic laser welding manual-automatic integrated machine. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It is widely used in the field of welding technology. However, since the welding materials are prone to contain other impurities, such as grease or oxides, the impurities in the welding materials overheat and decompose during the welding process to produce smoke. In addition, improper control of welding parameters leads to uneven weld temperature, which is also prone to produce smoke, increasing pollution to the environment during the welding process.

[0003] Based on this, the utility model designs a fully automatic laser welding manual-automatic integrated machine to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a fully automatic laser welding manual-automatic integrated machine, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fully automatic laser welding manual-automatic integrated machine, comprising a control chassis, a controller is fixedly installed on the top of the control chassis, an air-cooled laser is arranged inside the control chassis, a laser welding head is arranged at the output end of the air-cooled laser, a bearing frame is arranged on the right side of the control chassis, a bearing pad is plugged into the inner wall of the bearing frame, a lifting support is arranged on the inner wall of the lifting support, a self-rotating chuck is fixedly installed on the inner wall of the lifting support, and the bearing pad is A deflection hole for slidably inserting the rotating end of the rotating chuck is provided on the top, and exhaust holes are provided on the left and right sides of the top of the bearing pad. An air guide component is provided on the inner wall of each group of the exhaust holes, and each group of the air guide components includes an air collecting box. A filter screen is provided on the top of each group of the air collecting boxes, and multiple groups of exhaust branch pipes are provided at the bottom of each group of the air collecting boxes. The output end of each group of the exhaust branch pipes is connected to a duct fan. A positioning assembly is provided on the front of the bearing frame, and the laser welding head is fixedly installed on the moving end of the positioning assembly.

[0006] Preferably, the positioning assembly includes two groups of manual self-driving assemblies, a lateral offset seat and a longitudinal offset seat, each group of the manual self-driving assemblies includes two groups of guide circular rails, the outer surfaces of the two adjacent groups of guide circular rails are each provided with two groups of support seats and drive seats, the outer surface of each group of the support seats is provided with bearing holes, the inner wall of each group of the bearing holes is installed with a deflection bearing by interference fit, a ball screw is installed between the two groups of rotating ends relative to the deflection bearings by interference fit, and the outer surface of each group of the lateral offset seat and the longitudinal offset seat is provided with two groups of corresponding guide circular rails for slidable insertion Guide hole, the outer surface of each group of the lateral offset seat and the longitudinal offset seat is provided with a driving hole for the moving end of the ball screw to be inserted, the front of the longitudinal offset seat is provided with two groups of extension holes, and an extension component is slidably inserted between the inner walls of the two groups of extension holes, and a driving motor is fixedly installed on the outer surface of each group of the driving seat, and the output end of each group of the driving motor is transmission-connected to one end of the corresponding ball screw through a coupling, and a driving handle is provided at the end of each group of the ball screw away from the driving motor, and the input end of each group of the driving motor is electrically connected to the output end of the controller.

[0007] Preferably, the extension assembly includes two groups of extension rods, and the outer surface of each group of extension rods can be slidably mounted with a limiting tube, and the outer surface of each group of limiting tubes is threaded with a limiting bolt, and one end of each group of limiting bolts inserted into the limiting tube is tightly pressed against the outer surface of the corresponding extension rod, an angle adjustment assembly is arranged between the rear ends of the two groups of extension rods, and a synchronization bracket is mounted between the front ends of the two groups of extension rods, and the rear end of each group of limiting tubes is fixedly connected to the back side of the longitudinal offset seat.

[0008] Preferably, the angle adjustment component includes a positioning plate, a positioning hole is provided on the front side of the positioning plate, a positioning shaft is rotatably inserted into the inner wall of the positioning hole, an angle adjustment plate is provided at the rear end of the positioning shaft, a plurality of groups of angle adjustment holes are provided on the back sides of the positioning plate and the angle adjustment plate, the positioning plate and the angle adjustment plate are fixedly installed by a plurality of groups of angle adjustment bolts and nuts, the outer surface of each group of the angle adjustment bolts is slidably inserted into the inner wall of the corresponding angle adjustment hole, a clamping support is provided on the back side of the angle adjustment plate, and the outer surface of the laser welding head is inserted into the inner wall of the clamping support.

[0009] Preferably, the outer surface of each group of the limiting bolts is threaded with a locking nut, and the bottom end of each group of the locking nut is fixedly connected to the outer surface of the corresponding limiting tube.

[0010] Preferably, the outer surface of each group of the extension rods is provided with a reinforcement groove, and the bottom end of each group of the limiting bolts is tightly pressed against the inner wall of the corresponding reinforcement groove.

[0011] Compared with the prior art, the utility model provides a fully automatic laser welding manual-automatic integrated machine, which has the following beneficial effects:

[0012] 1. This fully automatic laser welding manual and automatic machine uses an air guide component to allow the duct fan to drive external air into the gas collecting box through the filter screen during welding. The smoke generated during welding follows the air through the filter screen into the gas collecting box. The smoke mixed gas in the gas collecting box is driven by the duct fan through an external pipeline into the purification equipment for treatment, which greatly reduces the probability of smoke escaping during welding and effectively reduces the pollution to the environment during welding, thereby enhancing the practicality of the device.

[0013] 2. This fully automatic laser welding manual and automatic machine drives the ball screw to rotate along the deflection bearing by driving the handle, and the ball screw drives the lateral offset seat or the longitudinal offset seat to move along the guide circular rail. The lateral offset seat drives the longitudinal offset seat to move through the manual and automatic drive assembly, and the longitudinal offset seat drives the laser welding head to move to the initial welding position through the extension assembly. Then, the welding data is input into the controller according to the planned welding path. The controller controls the extension assembly and the air-cooled laser to drive the laser welding head to move and weld respectively according to the welding data, which effectively improves the convenience of device positioning and greatly reduces the device's requirements for component positioning accuracy.

[0014] 3. This fully automatic laser welding manual and automatic machine uses a self-rotating chuck to allow the operator to input welding data into the controller according to the planned welding path. The controller controls the self-rotating chuck to rotate at a set angle. During this process, the self-rotating chuck drives the component to rotate relative to the laser welding head, thereby achieving the probability of the laser welding head being relatively linked to the component, effectively improving the adaptability of the device to different welding routes, greatly enhancing the applicability of the device, and thus enhancing the practicality of the device.

[0015] 4. The fully automatic laser welding manual and automatic machine uses an extension component to enable the synchronous bracket to drive the extension rod to move along the extension hole. The extension rod drives the laser welding head to move through the angle adjustment component. After the laser welding head extends to the set distance, the limit bolt is rotated. The limit bolt fixes the extension rod and the limit tube, which greatly increases the convenience of adjusting the position of the laser welding head. In conjunction with the angle adjustment component, the angle adjustment plate drives the positioning shaft to rotate along the positioning hole on the positioning plate. After the angle adjustment plate rotates to the set angle, it is fixed to the positioning plate through the angle adjustment bolt and nut with the cooperation of the angle adjustment hole. The angle adjustment plate drives the laser welding head to rotate to the set angle through the clamping support, which effectively improves the convenience of adjusting the angle of the laser welding head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a right side view of the structure of the utility model;

[0018] Figure 3It is a schematic diagram of the manual automatic drive assembly of the utility model structure;

[0019] Figure 4 It is a schematic diagram of the structural air guide component of the utility model.

[0020] In the figure: 1. control chassis; 2. controller; 3. laser welding head; 4. bearing frame; 5. bearing pad; 6. lifting support; 7. self-rotating chuck; 8. air guide assembly; 9. air collecting box; 10. filter screen; 11. exhaust branch pipe; 12. duct fan; 13. adjustment assembly; 14. manual and automatic drive assembly; 15. lateral offset seat; 16. guide circular rail; 17. support seat; 18. drive seat; 19. deflection bearing; 20. ball screw; 21. extension assembly; 22. extension rod; 23. limit tube; 24. limit bolt; 25. angle adjustment assembly; 26. drive motor; 27. drive handle; 28. positioning plate; 29. ​​longitudinal offset seat; 30. angle adjustment plate; 31. angle adjustment hole; 32. clamping support; 33. anti-loosening nut; 34. reinforcement groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4The utility model provides a technical solution: a fully automatic laser welding manual and automatic integrated machine, comprising a control chassis 1, a controller 2 is fixedly installed on the top of the control chassis 1, an air-cooled laser is arranged inside the control chassis 1, a laser welding head 3 is arranged at the output end of the air-cooled laser, a carrying frame 4 is arranged on the right side of the control chassis 1, a carrying pad 5 is plugged into the inner wall of the carrying frame 4, a lifting support 6 is arranged on the inner wall of the carrying frame 4, a self-rotating chuck 7 is fixedly installed on the inner wall of the lifting support 6, a deflection hole for slidingly plugging the rotating end of the self-rotating chuck 7 is opened on the top of the carrying pad 5, and the operator inputs welding data into the controller 2 according to the planned welding path through the self-rotating chuck 7, and the controller 2 controls the self-rotating chuck 7 to rotate at a set angle, and in this process, the self-rotating chuck 7 drives the component to rotate relative to the laser welding head 3, thereby achieving the probability of the laser welding head 3 being relatively linked with the component, effectively improving the adaptability of the device to different welding routes, greatly enhancing the applicability of the device, thereby enhancing the installation In order to improve the practicality of the device, exhaust holes are provided on the left and right sides of the top of the bearing pad 5, and an air guide component 8 is provided on the inner wall of each group of exhaust holes. Through the air guide component 8, the duct fan 12 drives the external air to enter the gas collecting box 9 through the filter screen 10 during welding, and the smoke generated during the welding operation follows the air through the filter screen 10 into the gas collecting box 9. The smoke mixed gas in the gas collecting box 9 enters the purification equipment through the external pipeline under the drive of the duct fan 12, which greatly reduces the probability of smoke escaping during welding, effectively reduces the pollution to the environment during welding, thereby enhancing the practicality of the device, each group of air guide components 8 includes a gas collecting box 9, and a filter screen 10 is provided on the top of each group of gas collecting boxes 9. A plurality of exhaust branch pipes 11 are provided at the bottom of each group of gas collecting boxes 9, and the output end of each exhaust branch pipe 11 is connected to the duct fan 12. A positioning component 13 is provided on the front of the bearing frame 4, and the laser welding head 3 is fixedly installed with the moving end of the positioning component 13.

[0023] In the present invention, the positioning assembly 13 includes two groups of manual self-driving assemblies 14, a lateral offset seat 15 and a longitudinal offset seat 29. Each group of manual self-driving assemblies 14 includes two groups of guide circular rails 16. The outer surfaces of the two adjacent groups of guide circular rails 16 are both covered with two groups of support seats 17 and a drive seat 18. The outer surface of each group of support seats 17 is provided with a bearing hole. The inner wall of each group of bearing holes is fitted with a deflection bearing 19 in an interference fit. The rotation ends of the two groups of relative deflection bearings 19 are both interference fit. The ball screw 20 is installed in cooperation, and the outer surface of each set of lateral offset seats 15 and longitudinal offset seats 29 is provided with two sets of guide holes for slidable insertion of the corresponding guide circular rails 16, and the outer surface of each set of lateral offset seats 15 and longitudinal offset seats 29 is provided with a drive hole for plugging the moving end of the ball screw 20, and the front of the longitudinal offset seat 29 is provided with two sets of extension holes, and the extension components 21 are slidably inserted between the inner walls of the two sets of extension holes, and the outer surface of each set of drive seats 18 is fixed A driving motor 26 is installed, and the output end of each group of driving motors 26 is transmission-connected to one end of the corresponding ball screw 20 through a coupling. A driving handle 27 is provided at one end of each group of ball screws 20 away from the driving motor 26. The input end of each group of driving motors 26 is electrically connected to the output end of the controller 2. The ball screw 20 is rotated along the deflection bearing 19 through the driving handle 27, and the ball screw 20 drives the lateral offset seat 15 or the longitudinal offset seat 29 to move along the guide circular rail 16. The lateral offset seat 15 drives the longitudinal offset seat 29 to move through the manual-automatic drive component 14, and the longitudinal offset seat 29 drives the laser welding head 3 to move to the initial welding position through the extension component 21. Then, welding data is input into the controller 2 according to the planned welding path. The controller 2 controls the extension component 21 and the air-cooled laser according to the welding data to drive the laser welding head 3 to move and weld respectively, which effectively improves the convenience of device positioning and greatly reduces the device's requirements for component positioning accuracy.

[0024] In the utility model, the extension component 21 includes two groups of extension rods 22, and the outer surface of each group of extension rods 22 can be slidably mounted with a limiting tube 23, and the outer surface of each group of limiting tubes 23 is threaded with a limiting bolt 24, and one end of each group of limiting bolts 24 inserted into the limiting tube 23 is tightly pressed against the outer surface of the corresponding extension rod 22, and an angle adjustment component 25 is arranged between the rear ends of the two groups of extension rods 22, and a synchronous bracket is mounted between the front ends of the two groups of extension rods 22, and the rear end of each group of limiting tubes 23 is fixedly connected to the back side of the longitudinal offset seat 29, and the synchronous bracket drives the extension rod 22 to move along the extension hole through the extension component 21, and the extension rod 22 drives the laser welding head 3 to move through the angle adjustment component 25, and the laser welding head 3 is extended to the set distance and then the limiting bolt 24 is rotated, and the limiting bolt 24 fixes the extension rod 22 and the limiting tube 23, which greatly increases the convenience of position adjustment of the laser welding head 3.

[0025] In the present invention, the angle adjustment component 25 includes a positioning plate 28, a positioning hole is provided on the front of the positioning plate 28, a positioning shaft is rotatably inserted into the inner wall of the positioning hole, an angle adjustment plate 30 is provided at the rear end of the positioning shaft, and multiple groups of angle adjustment holes 31 are provided on the back of the positioning plate 28 and the angle adjustment plate 30. The positioning plate 28 and the angle adjustment plate 30 are fixedly installed by multiple groups of angle adjustment bolts and nuts. The outer surface of each group of angle adjustment bolts is slidably inserted into the inner wall of the corresponding angle adjustment hole 31. A clamping support 32 is provided on the back side, and the outer surface of the laser welding head 3 is plugged into the inner wall of the clamping support 32, and cooperates with the angle adjustment component 25. The angle adjustment plate 30 drives the positioning shaft to rotate along the positioning hole on the positioning plate 28. After the angle adjustment plate 30 rotates to the set angle, it is fixed to the positioning plate 28 by angle adjustment bolts and nuts with the cooperation of the angle adjustment hole 31. The angle adjustment plate 30 drives the laser welding head 3 to rotate to the set angle through the clamping support 32, which effectively improves the convenience of angle adjustment of the laser welding head 3.

[0026] In the utility model, in order to improve the stability of the device during operation, a lock nut 33 for applying a pre-tightening force thereto is threadedly installed on the outer surface of each set of limit bolts 24, thereby reducing the probability of uncontrollable loosening of the limit bolts 24, and the bottom end of each set of lock nuts 33 is fixedly connected to the outer surface of the corresponding limit tube 23, thereby improving the stability of the device during operation.

[0027] In the utility model, in order to reduce the probability of uncontrollable movement of the extension rod 22 relative to the limiting tube 23, a reinforcement groove 34 is provided on the outer surface of each group of extension rods 22 for increasing the contact area between the limiting bolts 24 and the limiting tube 23, thereby increasing the firmness between the extension rod 22 and the limiting tube 23. The bottom end of each group of limiting bolts 24 is tightly pressed against the inner wall of the corresponding reinforcement groove 34, thereby reducing the probability of uncontrollable movement of the extension rod 22 relative to the limiting tube 23.

[0028] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0029] When in use, the device is first fixed and installed to the set position. During this process, the output end of the duct fan 12 is connected to the input end of the purification equipment through an external pipeline. After the device is installed, the plane line welding or the ring line welding is determined according to the actual conditions of the welded parts. When welding is required, the positioning fixture is first fixed to the top of the bearing pad 5 or the self-rotating chuck 7, and then the parts are firmly placed on the top of the bearing pad 5 or the self-rotating chuck 7 through the positioning fixture. After the parts are firmly placed, the ball screw 20 is driven by the driving handle 27 to rotate along the deflection bearing 19, and the ball screw 20 is driven to rotate along the deflection bearing 19. The moving end of the ball screw 20 drives the lateral offset seat 15 or the longitudinal offset seat 29 to move along the guide circular rail 16. The lateral offset seat 15 drives the longitudinal offset seat 29 to move through the manual automatic drive component 14. The longitudinal offset seat 29 drives the laser welding head 3 to move to the initial welding position through the extension component 21. Then, the welding data is input into the controller 2 according to the planned welding path. The controller 2 controls the extension component 21 and the air-cooled laser to drive the laser welding head 3 to move and weld respectively according to the welding data. During the ring line welding, the controller 2 controls the self-rotating chuck 7 according to the set The laser welding head 3 rotates at a fixed angle. During this process, the self-rotating chuck 7 drives the component to rotate relative to the laser welding head 3. After welding is completed, the controller 2 drives the laser welding head 3 to reset. During this process, the pipeline fan 12 drives the external air to enter the gas collecting box 9 through the filter screen 10. The smoke generated during the welding operation follows the air through the filter screen 10 into the gas collecting box 9. The smoke mixed gas in the gas collecting box 9 enters the purification equipment through the external pipeline under the drive of the pipeline fan 12 for treatment. When the extension length or angle of the laser welding head 3 needs to be adjusted, first use the synchronization The bracket drives the extension rod 22 to move along the extension hole, and the extension rod 22 drives the laser welding head 3 to move through the angle adjustment component 25. After the laser welding head 3 extends to the set distance, the limit bolt 24 is rotated, and the limit bolt 24 fixes the extension rod 22 and the limit tube 23. Then, the positioning shaft is driven to rotate along the positioning hole on the positioning plate 28 through the angle adjustment plate 30. After the angle adjustment plate 30 rotates to the set angle, it is fixed to the positioning plate 28 with the cooperation of the angle adjustment hole 31 through the angle adjustment bolt and nut. The angle adjustment plate 30 drives the laser welding head 3 to rotate to the set angle through the clamping support 32.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic laser welding machine, comprising a control box (1), a controller (2) fixedly mounted on the top of the control box (1), an air-cooled laser disposed inside the control box (1), and a laser welding head (3) disposed at the output end of the air-cooled laser, characterized in that: A bearing frame (4) is arranged on the right side of the control chassis (1), a bearing pad (5) is inserted into the inner wall of the bearing frame (4), a lifting support (6) is arranged on the inner wall of the lifting support (6), a self-rotating chuck (7) is fixedly mounted on the inner wall of the lifting support (6), a deflection hole for slidably inserting the rotating end of the self-rotating chuck (7) is arranged on the top of the bearing pad (5), exhaust holes are arranged on the left and right sides of the top of the bearing pad (5), and each group of the exhaust holes is provided with a An air guide assembly (8) is arranged, each group of the air guide assembly (8) comprises an air collecting box (9), a filter screen (10) is arranged on the top of each group of the air collecting boxes (9), a plurality of exhaust branch pipes (11) are arranged on the bottom of each group of the air collecting boxes (9), the output end of each group of the exhaust branch pipes (11) is connected to a duct fan (12), a positioning assembly (13) is arranged on the front of the supporting frame (4), and the laser welding head (3) is fixedly installed on the movable end of the positioning assembly (13).

2. The fully automatic laser welding machine according to claim 1, characterized in that: The positioning assembly (13) comprises two groups of manual self-driving assemblies (14), a lateral displacement seat (15) and a longitudinal displacement seat (29), each group of the manual self-driving assemblies (14) comprises two groups of guide circular rails (16), the outer surfaces of the two adjacent groups of the guide circular rails (16) are both covered with two groups of support seats (17) and drive seats (18), the outer surface of each group of the support seats (17) is provided with a bearing hole, the inner wall of each group of the bearing hole is installed with a deflection bearing (19) in an interference fit, and a ball screw (20) is installed between the two groups of rotating ends relative to the deflection bearing (19) in an interference fit, and the outer surface of each group of the lateral displacement seat (15) and the longitudinal displacement seat (29) is provided with two groups of guide circular rails (16) for slidable insertion. The guide holes are connected, the outer surfaces of each group of the lateral displacement seat (15) and the longitudinal displacement seat (29) are provided with a driving hole for plugging the moving end of the ball screw (20), the front of the longitudinal displacement seat (29) is provided with two groups of extension holes, and an extension component (21) is slidably plugged between the inner walls of the two groups of extension holes, and the outer surface of each group of the driving seat (18) is fixedly installed with a driving motor (26), the output end of each group of the driving motor (26) is transmission-connected to one end of the corresponding ball screw (20) through a coupling, and the end of each group of the ball screw (20) away from the driving motor (26) is provided with a driving handle (27), and the input end of each group of the driving motor (26) is electrically connected to the output end of the controller (2).

3. The fully automatic laser welding machine according to claim 2, characterized in that: The extension assembly (21) comprises two groups of extension rods (22), the outer surface of each group of the extension rods (22) is slidably mounted with a limit tube (23), the outer surface of each group of the limit tubes (23) is threaded with a limit bolt (24), one end of each group of the limit bolts (24) inserted into the limit tube (23) is tightly pressed against the outer surface of the corresponding extension rod (22), an angle adjustment assembly (25) is arranged between the rear ends of the two groups of the extension rods (22), a synchronous bracket is mounted between the front ends of the two groups of the extension rods (22), and the rear end of each group of the limit tubes (23) is fixedly connected to the back side of the longitudinal offset seat (29).

4. The fully automatic laser welding machine according to claim 3, characterized in that: The angle adjustment component (25) includes a positioning plate (28), a positioning hole is provided on the front of the positioning plate (28), a positioning shaft is rotatably inserted into the inner wall of the positioning hole, an angle adjustment plate (30) is provided at the rear end of the positioning shaft, and multiple groups of angle adjustment holes (31) are provided on the backs of the positioning plate (28) and the angle adjustment plate (30). The positioning plate (28) and the angle adjustment plate (30) are fixedly installed by multiple groups of angle adjustment bolts and nuts, and the outer surface of each group of the angle adjustment bolts is slidably inserted into the inner wall of the corresponding angle adjustment hole (31). A clamping support (32) is provided on the back of the angle adjustment plate (30), and the outer surface of the laser welding head (3) is inserted into the inner wall of the clamping support (32).

5. The fully automatic laser welding machine according to claim 3, characterized in that: The outer surface of each group of the limiting bolts (24) is threaded with a locking nut (33), and the bottom end of each group of the locking nut (33) is fixedly connected to the outer surface of the corresponding limiting tube (23).

6. The fully automatic laser welding machine according to claim 3, characterized in that: The outer surface of each group of the extension rods (22) is provided with a reinforcement groove (34), and the bottom end of each group of the limiting bolts (24) is tightly pressed against the inner wall of the corresponding reinforcement groove (34).

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