Automatic laser welding machine for machining automobile stiffening beam

Abstract

The invention belongs to the technical field of laser welding, and particularly relates to an automatic laser welding machine for machining an automobile stiffening beam, the automatic laser welding machine comprises a mounting rack, the upper side wall of the mounting rack is fixedly connected with a welding mechanical arm, and the end part of the welding mechanical arm is connected with a laser welding head. Before the laser welding machine is used, the angle and the shape of a light spot emitted by the laser welding machine can be detected firstly, and when the emission angle and the shape of the light spot are detected to be changed, it is indicated that splashes are possibly attached to the inner wall of the copper nozzle and need to be cleaned in time, so that the welding quality of the laser welding machine is ensured; and when splash is attached to the inner wall of the copper nozzle, and the emission angle and shape of light spots are changed, the splash attached to the inner wall of the copper nozzle can be automatically and carefully cleaned, and the problem that the inner wall of the copper nozzle is damaged due to too large cleaning force is avoided while it is guaranteed that the splash is cleaned up.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser welding, and particularly relates to an automatic laser welding machine for processing automotive reinforcement beams. Background Art

[0002] Automotive reinforcement beams are key components in the vehicle body structure used to enhance the rigidity, safety, and anti-deformation ability of the vehicle body. They are usually made of high-strength steel or aluminum alloy and are distributed in key parts of the vehicle body (such as the chassis, doors, longitudinal beams, cross beams, etc.). When welding automotive reinforcement beams, in order to ensure welding accuracy and improve the quality of weld seams, a laser welding machine is usually used for welding. For example, an automatic laser welding machine for processing automotive reinforcement beams proposed in Patent Publication No. CN101879660A.

[0003] When the existing laser welding machine performs short-distance welding on automotive reinforcement beams, some spatter (metal droplets, oxides) generated during the welding process is easily attached to the inner wall of the copper nozzle, which in turn affects the stability and accuracy of the laser welding process. After the copper nozzle is used for a period of time, the operator needs to clean its inner wall, but manual cleaning is likely to cause mechanical damage to the copper nozzle. In addition, the copper nozzle is close to the welding area and is affected by long-term laser reflection heat (part of the laser energy is absorbed by the copper nozzle) and welding radiation heat, which is likely to cause overall or local deformation, such as the ellipticity of the inner hole exceeding 5%, thus leading to problems such as the deviation of the laser beam focusing position and the decline of welding accuracy, and it is difficult for the operator to detect in time, ultimately affecting the welding quality of automotive reinforcement beams.

[0004] Therefore, an automatic laser welding machine for processing automotive reinforcement beams is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic laser welding machine for processing automotive reinforcement beams in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions: An automatic laser welding machine for processing automotive reinforcement beams, including a mounting frame, a welding robotic arm is fixedly connected to the upper side wall of the mounting frame, a laser welding head is connected to the end of the welding robotic arm, a controller is fixedly connected to the side wall of the mounting frame, and further includes: A moving frame is arranged above the mounting frame. The mobile end of the conveying component below the mounting frame is connected to the lower side wall of the moving frame, which can drive the moving frame to move on the surface of the mounting frame. Two clamping electric push rods are fixedly connected to the front side wall of the moving frame. The mobile ends of both clamping electric push rods pass through the moving frame and are fixedly connected to the same clamping plate, and the automotive reinforcement beam is clamped and fixed by the clamping plate; The detection box is fixedly connected to the upper side wall of the mounting frame and is arranged on the right side of the welding robot arm. A cleaning component is connected to the lower inner wall of the detection box. The cleaning component is located on the left side of the detection box, and the splashes on the inner wall of the copper nozzle at the lower end of the laser welding head are cleaned by the cleaning component; The light spot detection component is arranged on the inner wall of the detection box and on the right side of the detection box, and is used to detect the shape of the laser light spot.

[0007] Preferably, the cleaning component includes a cleaning frame fixedly connected to the lower inner wall of the detection box. The cleaning frame is of an inverted U-shaped structure. A vertically placed cleaning cylinder is inserted into the side wall of the cleaning frame. The upper end of the cleaning cylinder is of a closed structure, and the lower end of the cleaning cylinder is of an open structure. An upper sealing plate and a lower sealing plate are connected to the inner wall of the cleaning cylinder. A plurality of uniformly distributed water spray heads are fixedly communicated with the outer wall of the cleaning cylinder. The water spray heads are located at the position between the upper sealing plate and the lower sealing plate. A micro water pump is fixedly connected to the upper side wall of the cleaning frame. The liquid inlet end of the micro water pump passes through the detection box and is communicated with an external cleaning liquid storage barrel. The liquid outlet end of the micro water pump is fixedly communicated with an infusion pipe. The lower end of the infusion pipe passes through the cleaning frame and is communicated with the lower sealing plate. A micro air pump is fixedly connected to the upper side wall of the cleaning frame. The air outlet end of the micro air pump is fixedly communicated with an air delivery pipe. The lower end of the air delivery pipe passes through the cleaning frame and the lower sealing plate and is communicated with the upper sealing plate. Short pipes are fixedly communicated with both the left and right sides of the cleaning cylinder. The short pipes are located above the upper sealing plate. The mutually remote ends of the two short pipes are fixedly communicated with the same annular wear-resistant rubber ring. Control valves are arranged in both short pipes. A pressure sensor is arranged in the short pipe on the right side. The upper end of the cleaning cylinder is connected with a wear detection component.

[0008] Preferably, the wear detection component includes a detection pipe fixedly connected to the upper end of the cleaning cylinder. The detection pipe is communicated with the cleaning cylinder. The upper end of the detection pipe is rotatably connected with a rotating cylinder. The rotating cylinder is of a hollow structure. The upper end of the detection pipe is communicated with the rotating cylinder. A cross cylinder is fixedly connected to the upper side wall of the rotating cylinder. The left end of the cross cylinder is of a closed structure, and the right end of the cross cylinder is of an open structure. An insertion ring is fixedly connected to the inner wall of the cross cylinder, and a detection pin is movably inserted into the insertion ring. The right end of the detection pin extends out of the insertion ring and the cross cylinder and is fixedly connected with a plastic ball. The left end of the detection pin extends out of the insertion ring and is fixedly connected with a moving plate. A spring is fixedly connected between the moving plate and the insertion ring. A conductive frame is fixedly connected to the left side wall of the moving plate. The conductive frame is electrically connected with an external power supply. A resistance plate is inlaid on the inner wall of the cross cylinder. The right end of the resistance plate is electrically connected with a controller.

[0009] Preferably, a magnetic plate is fixedly connected to the left side wall of the moving plate through a bracket, and an electromagnet is fixedly connected to the left side wall of the cross cylinder.

[0010] Preferably, the spot detection component includes a vertical cylinder fixedly connected to the inner wall of the lower side of the detection box. The upper end of the vertical cylinder is an open structure, and the lower end of the vertical cylinder is a closed structure. A light intensity sensor is fixedly connected to the inner wall of the lower side of the vertical cylinder. A frosted glass is placed at the upper port of the vertical cylinder. A baffle plate matching the spot is fixedly connected to the upper side wall of the frosted glass. An absorbent layer is coated on the surface of the baffle plate. A light-shielding cover is fixedly connected to the inner wall of the detection box. A conical hole matching the copper nozzle is provided on the upper side wall of the light-shielding cover. The baffle plate is located at the lowermost part of the conical hole.

[0011] Preferably, an exhaust port is provided on the right side wall of the detection box, and an airflow sensor is fixedly connected to the inner wall of the exhaust port.

[0012] Preferably, a plurality of air outlet ports are provided on the side wall of the rotating cylinder, and the air outlet ports are in an arc structure.

[0013] Preferably, a drain pipe is fixedly communicated with the left side wall of the detection box, and a manual valve is provided in the drain pipe.

[0014] Compared with the existing technology, the advantages of an automatic laser welding machine for processing automobile reinforcing beams are as follows: Through the arranged spot detection component, before using the laser welding machine, the angle and shape of the spot emitted by the laser welding machine can be detected first. When it is detected that the emission angle and shape of the spot change, it indicates that there may be spatter attached to the inner wall of the copper nozzle, and it is necessary to clean it in time to ensure the welding quality of the laser welding machine.

[0015] Through the arranged cleaning component, when spatter adheres to the inner wall of the copper nozzle, resulting in a change in the emission angle and shape of the spot, the spatter attached to the inner wall of the copper nozzle can be automatically and carefully cleaned. While ensuring that the spatter is cleaned thoroughly, it also avoids the problem that excessive cleaning force may cause damage to the inner wall of the copper nozzle.

[0016] Through the arranged wear detection component, while cleaning the spatter on the inner wall of the copper nozzle, the wear condition of the inner wall of the copper nozzle can be automatically detected. When it is detected that the inner wall of the copper nozzle is severely worn, the operator can be reminded in time to replace a new copper nozzle, ensuring the welding accuracy of the laser welding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an automatic laser welding machine for processing automobile reinforcing beams provided by the present invention; Figure 2 is a schematic internal structural diagram of the detection box in an automatic laser welding machine for processing automobile reinforcing beams provided by the present invention; Figure 3It is a schematic diagram of the surface structure of the cleaning frame in an automatic laser welding machine for processing automobile reinforcing beams provided by the present invention; Figure 4 It is a schematic diagram of the internal structure of the cleaning cylinder in an automatic laser welding machine for processing automobile reinforcing beams provided by the present invention; Figure 5 It is a schematic diagram of the internal structure of the horizontal cylinder in an automatic laser welding machine for processing automobile reinforcing beams provided by the present invention; Figure 6 It is a top view sectional view of the rotating cylinder in an automatic laser welding machine for processing automobile reinforcing beams provided by the present invention; Figure 7 It is a schematic diagram of the structure of the light spot detection component in an automatic laser welding machine for processing automobile reinforcing beams provided by the present invention.

[0018] In the figure: 1 mounting frame, 2 welding robotic arm, 3 laser welding head, 4 controller, 5 moving frame, 6 clamping electric push rod, 7 clamping plate, 8 detection box, 9 copper nozzle, 10 cleaning component, 101 cleaning frame, 102 cleaning cylinder, 11 upper sealing plate, 12 lower sealing plate, 13 water spray head, 14 micro water pump, 15 infusion tube, 16 micro air pump, 17 air supply pipe, 18 short tube, 19 annular wear-resistant rubber ring, 20 control valve, 21 air pressure sensor, 22 wear detection component, 221 detection tube, 222 rotating cylinder, 23 horizontal cylinder, 24 insertion ring, 25 plastic ball, 26 moving plate, 27 conductive frame, 28 resistance plate, 29 magnetic plate, 30 electromagnetic block, 31 light spot detection component, 311 vertical cylinder, 312 light intensity sensor, 32 frosted glass, 33 baffle plate, 34 light-shielding cover, 35 conical hole, 36 exhaust port, 37 air flow sensor, 38 air outlet, 39 drain pipe, 40 manual valve, 41 detection pin. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0020] As Figures 1-7 shown, an automatic laser welding machine for processing automobile reinforcing beams includes a mounting frame 1. A welding robotic arm 2 is fixedly connected to the upper side wall of the mounting frame 1. The end of the welding robotic arm 2 is connected with a laser welding head 3. A controller 4 is fixedly connected to the side wall of the mounting frame 1. It further includes: The moving frame 5 is arranged above the mounting frame 1. The moving end of the conveying component below the mounting frame 1 is connected to the lower side wall of the moving frame 5, which can drive the moving frame 5 to move on the surface of the mounting frame 1. Two clamping electric push rods 6 are fixedly connected to the front side wall of the moving frame 5. The moving ends of the two clamping electric push rods 6 both pass through the moving frame 5 and are fixedly connected to the same clamping plate 7. The automotive reinforcing beam is clamped and fixed by the clamping plate 7; The detection box 8 is fixedly connected to the upper side wall of the mounting frame 1 and is arranged on the right side of the welding robotic arm 2. The lower inner wall of the detection box 8 is connected with a cleaning component 10. The cleaning component 10 is located on the left side of the detection box 8. The spatter on the inner wall of the copper nozzle 9 at the lower end of the laser welding head 3 is cleaned by the cleaning component 10. A drain pipe 39 is fixedly communicated with the left side wall of the detection box 8. A manual valve 40 is arranged in the drain pipe 39. The cleaning component 10 includes a cleaning frame 101 fixedly connected to the lower inner wall of the detection box 8. The cleaning frame 101 is of an inverted U-shaped structure. A vertically placed cleaning cylinder 102 is inserted into the side wall of the cleaning frame 101. The upper end of the cleaning cylinder 102 is of a closed structure, and the lower end of the cleaning cylinder 102 is of an open structure. An upper plugging plate 11 and a lower plugging plate 12 are connected to the inner wall of the cleaning cylinder 102. A plurality of uniformly distributed water spray heads 13 are fixedly communicated with the outer wall of the cleaning cylinder 102. The water spray heads 13 are located between the upper plugging plate 11 and the lower plugging plate 12. A micro water pump 14 is fixedly connected to the upper side wall of the cleaning frame 101. The liquid inlet end of the micro water pump 14 passes through the detection box 8 and is communicated with an external cleaning liquid storage barrel. The liquid outlet end of the micro water pump 14 is fixedly communicated with an infusion pipe 15. The lower end of the infusion pipe 15 passes through the cleaning frame 101 and is communicated with the lower plugging plate 12. A micro air pump 16 is fixedly connected to the upper side wall of the cleaning frame 101. The air outlet end of the micro air pump 16 is fixedly communicated with an air supply pipe 17. The lower end of the air supply pipe 17 passes through the cleaning frame 101 and the lower plugging plate 12 and is communicated with the upper plugging plate 11. Short pipes 18 are fixedly communicated with both the left and right sides of the cleaning cylinder 102. The short pipes 18 are located above the upper plugging plate 11. The mutually remote ends of the two short pipes 18 are fixedly communicated with the same annular wear-resistant rubber ring 19. Control valves 20 are arranged in both of the two short pipes 18. A pressure sensor 21 is arranged in the right short pipe 18. A wear detection component 22 is connected to the upper end of the cleaning cylinder 102, which can clean the spatter adhering to the inner wall of the copper nozzle 9; The spot detection component 31 is arranged on the inner wall of the detection box 8 and on the right side of the detection box 8, and is used to detect the shape of the laser spot. The spot detection component 31 includes a vertical cylinder 311 fixedly connected to the lower inner wall of the detection box 8. The upper end of the vertical cylinder 311 is an open structure, and the lower end of the vertical cylinder 311 is a closed structure. A light intensity sensor 312 is fixedly connected to the lower inner wall of the vertical cylinder 311. A frosted glass 32 is placed at the upper port of the vertical cylinder 311. A baffle 33 matching the spot is fixedly connected to the upper side wall of the frosted glass 32. An absorbent layer is coated on the surface of the baffle 33. A light-shielding cover 34 is fixedly connected to the inner wall of the detection box 8. A conical hole 35 matching the copper nozzle 9 is opened on the upper side wall of the light-shielding cover 34. The baffle 33 is located at the bottom of the conical hole 35, and can detect the angle and shape of the spot.

[0021] The wear detection component 22 includes a detection tube 221 fixedly connected to the upper end of the cleaning cylinder 102. The detection tube 221 is communicated with the cleaning cylinder 102. A rotating cylinder 222 is rotatably connected to the upper end of the detection tube 221. The rotating cylinder 222 is a hollow structure. A plurality of air outlets 38 are opened on the side wall of the rotating cylinder 222. The air outlets 38 are arc-shaped structures. The upper end of the detection tube 221 is communicated with the rotating cylinder 222. A horizontal cylinder 23 is fixedly connected to the upper side wall of the rotating cylinder 222. The left end of the horizontal cylinder 23 is a closed structure, and the right end of the horizontal cylinder 23 is an open structure. An insertion ring 24 is fixedly connected to the inner wall of the horizontal cylinder 23, and a detection pin 41 is movably inserted into the insertion ring 24. The right end of the detection pin 41 extends out of the insertion ring 24 and the horizontal cylinder 23, and is fixedly connected with a plastic ball 25. The left end of the detection pin 41 extends out of the insertion ring 24 and is fixedly connected with a moving plate 26. A magnetic plate 29 is fixedly connected to the left side wall of the moving plate 26 through a bracket. An electromagnet 30 is fixedly connected to the left side wall of the horizontal cylinder 23. The same spring is fixedly connected between the moving plate 26 and the insertion ring 24. A conductive frame 27 is fixedly connected to the left side wall of the moving plate 26. The conductive frame 27 is electrically connected to an external power supply. A resistance plate 28 is embedded in the inner wall of the horizontal cylinder 23. The right end of the resistance plate 28 is electrically connected to the controller 4, and can detect the wear degree of the inner wall of the copper nozzle 9, and can also detect the size of the copper nozzle 9.

[0022] An exhaust port 36 is opened on the right side wall of the detection box 8. An air flow sensor 37 is fixedly connected to the inner wall of the exhaust port 36. The shielding gas is conveyed to the laser welding head 3 through the gas supply channel on the surface of the laser welding head 3 and is ejected through the copper nozzle 9, and the gas is discharged through the exhaust port 36, so as to detect the exhaust condition of the copper nozzle 9 by using the air flow sensor 37 in the exhaust port 36.

[0023] The operating principle of the present invention is described as follows: When welding the automotive reinforcement beam, such as welding the bumper beam and the energy-absorbing box, place the bumper beam into the moving frame 5, and then the operator controls the two clamping electric push rods 6 to work through the external operation panel. The two clamping electric push rods 6 will drive the clamping plates 7 to move, and use the clamping plates 7 to fix the bumper beam. Then, use an external manipulator to clamp the energy-absorbing box and place it at the designated position on the bumper beam, and then the welding work can be carried out; Before the welding work is carried out, the controller 4 will control the welding robotic arm 2 to drive the copper nozzle 9 at the lower end of the laser welding head 3 to insert into the conical hole 35, and then control the laser welding head 3 to work. And the controller 4 changes the focus point of the laser welding head 3, so that the laser welding head 3 emits a circular light spot with a set shape onto the surface of the baffle 33. When the emission angle or shape of the light spot changes, the light spot will exceed the range of the baffle 33, causing some light to irradiate onto the frosted glass 32. The light beam refracted by the frosted glass 32 will be detected by the light intensity sensor 312. When the light intensity sensor 312 detects the light, it means that it may be caused by spatter adhering to the inner wall of the copper nozzle 9; The controller 4 will control the welding robotic arm 2 to drive the copper nozzle 9 to insert outside the cleaning cylinder 102. Then the controller 4 controls the solenoid valve inside the detection tube 221 to close (the solenoid valve is not shown in the figure), and controls the micro air pump 16 to work. The micro air pump 16 conveys external gas through the air supply pipe 17 to the upper part of the upper sealing plate 11, and conveys the gas into the annular wear-resistant rubber ring 19 through the short tubes 18 on both sides, so that the annular wear-resistant rubber ring 19 inflates and expands. After the annular wear-resistant rubber ring 19 inflates and expands, it will contact the inner wall of the copper nozzle 9. After the controller 4 detects that the air pressure on the inner wall of the annular wear-resistant rubber ring 19 reaches the set threshold (0.03 standard atmospheric pressure) through the air pressure sensor 21 on the inner wall of the right short tube 18, the controller 4 will control the control valves 20 on both sides to close and control the solenoid valve inside the detection tube 221 to open. The air flow will be conveyed into the rotating cylinder 222 through the detection tube 221 and discharged through the air outlet 38. Since the air outlet 38 is an arc-shaped structure, under the action of the reaction force of the air flow, the rotating cylinder 222 will rotate at the upper end of the detection tube 221. And the controller 4 will also control the micro water pump 14 to work. The micro water pump 14 conveys external absolute ethanol through the infusion tube 15 between the lower sealing plate 12 and the upper sealing plate 11 and sprays it through the spray head 13, spraying the absolute ethanol onto the inner wall of the copper nozzle 9. Then the controller 4 controls the copper nozzle 9 to move vertically upward through the welding robotic arm 2, and uses the annular wear-resistant rubber ring 19 to clean the spatter wetted by the absolute ethanol; While the copper nozzle 9 moves vertically upward, the controller 4 also controls the electromagnet block 30 on the inner wall of the horizontal cylinder 23 to cut off the power and lose magnetism, releasing the adsorption of the magnetic plate 29. Under the pulling force of the spring, the moving plate 26 drives the plastic ball 25 to move towards the inner wall of the copper nozzle 9 through the detection pin 41, causing the plastic ball 25 to contact the inner wall of the copper nozzle 9. And the rotating cylinder 222 drives the horizontal cylinder 23 to rotate. When the plastic ball 25 detects a worn area on the inner wall of the copper nozzle 9, the plastic ball 25 will drive the moving plate 26 and the conductive frame 27 to jump left and right once through the detection pin 41, causing the conductive frame 27 to slide left and right on the surface of the resistance plate 28 once. The conductive frame 27 is electrically connected to an external power supply, and the right end of the resistance plate 28 is electrically connected to the controller 4. After the conductive frame 27 slides on the surface of the resistance plate 28 once, the resistance connected to the controller 4 will change. When the external voltage remains unchanged, the magnitude of the current delivered to the circuit of the controller 4 will change. After detecting this change, the controller 4 will remind the operator to replace the worn copper nozzle 9 through the buzzer module inside the controller 4; When the wear detection component 22 does not detect wear on the inner wall of the copper nozzle 9, after the cleaning of the copper nozzle 9 is completed, the controller 4 will repeat the above steps to detect the light spot. When it is detected that the emission angle and shape of the light spot still change, the controller 4 will remind the operator through the buzzer module inside that there may be a problem with the optical components inside the laser welding head 3 and need to be repaired in time. When it is detected that both the emission angle and shape of the light spot return to normal, the welding work can be carried out.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic laser welding machine for processing automobile reinforcing beams, comprising a mounting frame (1), a welding robot arm (2) fixedly connected to the upper side wall of the mounting frame (1), a laser welding head (3) connected to the end of the welding robot arm (2), and a controller (4) fixedly connected to the side wall of the mounting frame (1), characterized in that, Further included are: A moving frame (5) is arranged above the mounting frame (1). The moving end of the conveying component below the mounting frame (1) is connected to the lower side wall of the moving frame (5), which can drive the moving frame (5) to move on the surface of the mounting frame (1). Two clamping electric push rods (6) are fixedly connected to the front side wall of the moving frame (5). The moving ends of the two clamping electric push rods (6) both pass through the moving frame (5) and are fixedly connected to the same clamping plate (7), and the automotive reinforcing beam is clamped and fixed by the clamping plate (7); A detection box (8) is fixedly connected to the upper side wall of the mounting frame (1) and is arranged on the right side of the welding robot arm (2). A cleaning component (10) is connected to the lower inner wall of the detection box (8). The cleaning component (10) is located on the left side of the detection box (8), and the spatter on the inner wall of the copper nozzle (9) at the lower end of the laser welding head (3) is cleaned by the cleaning component (10); A light spot detection component (31) is arranged on the inner wall of the detection box (8) and is arranged on the right side of the detection box (8) for detecting the shape of the laser light spot.

2. The automatic laser welding machine for processing automobile reinforcing beams according to claim 1, characterized in that, The cleaning component (10) includes a cleaning frame (101) fixedly connected to the lower inner wall of the detection box (8). The cleaning frame (101) is of an inverted U-shaped structure. A vertically placed cleaning cylinder (102) is inserted into the side wall of the cleaning frame (101). The upper end of the cleaning cylinder (102) is of a closed structure, and the lower end of the cleaning cylinder (102) is of an open structure. An upper sealing plate (11) and a lower sealing plate (12) are connected to the inner wall of the cleaning cylinder (102). A plurality of uniformly distributed water spray heads (13) are fixedly communicated with the outer wall of the cleaning cylinder (102). The water spray heads (13) are located at the position between the upper sealing plate (11) and the lower sealing plate (12). A micro water pump (14) is fixedly connected to the upper side wall of the cleaning frame (101). The liquid inlet end of the micro water pump (14) passes through the detection box (8) and is communicated with an external cleaning liquid storage barrel. The liquid outlet end of the micro water pump (14) is fixedly communicated with an infusion pipe (15). The lower end of the infusion pipe (15) passes through the cleaning frame (101) and is communicated with the lower sealing plate (12). A micro air pump (16) is fixedly connected to the upper side wall of the cleaning frame (101). The air outlet end of the micro air pump (16) is fixedly communicated with an air supply pipe (17). The lower end of the air supply pipe (17) passes through the cleaning frame (101) and the lower sealing plate (12) and is communicated with the upper sealing plate (11). Short pipes (18) are fixedly communicated with both the left and right sides of the cleaning cylinder (102). The short pipes (18) are located above the upper sealing plate (11). The mutually remote ends of the two short pipes (18) are fixedly communicated with the same annular wear-resistant rubber ring (19). Control valves (20) are arranged in both of the two short pipes (18). A pressure sensor (21) is arranged in the short pipe (18) on the right side. A wear detection component (22) is connected to the upper end of the cleaning cylinder (102).

3. The automatic laser welding machine for processing automotive reinforcing beams according to claim 2, wherein, The wear detection component (22) includes a detection tube (221) fixedly connected to the upper end of the cleaning cylinder (102). The detection tube (221) is in communication with the cleaning cylinder (102). The upper end of the detection tube (221) is rotatably connected to a rotating cylinder (222). The rotating cylinder (222) is of a hollow structure. The upper end of the detection tube (221) is in communication with the rotating cylinder (222). A transverse tube (23) is fixedly connected to the upper side wall of the rotating cylinder (222). The left end of the transverse tube (23) is of a closed structure, and the right end of the transverse tube (23) is of an open structure. An insertion ring (24) is fixedly connected to the inner wall of the transverse tube (23), and a detection pin (41) is movably inserted into the insertion ring (24). The right end of the detection pin (41) extends out of the insertion ring (24) and the transverse tube (23) and is fixedly connected to a plastic ball (25). The left end of the detection pin (41) extends out of the insertion ring (24) and is fixedly connected to a moving plate (26). The same spring is fixedly connected between the moving plate (26) and the insertion ring (24). A conductive frame (27) is fixedly connected to the left side wall of the moving plate (26). The conductive frame (27) is electrically connected to an external power source. A resistance plate (28) is embedded in the inner wall of the transverse tube (23). The right end of the resistance plate (28) is electrically connected to the controller (4).

4. An automatic laser welding machine for processing automotive reinforcement beams according to claim 3, characterized in that, A magnetic plate (29) is fixedly connected to the left side wall of the moving plate (26) through a bracket. An electromagnet (30) is fixedly connected to the left side wall of the transverse tube (23).

5. An automatic laser welding machine for processing automotive reinforcement beams according to claim 1, characterized in that, The spot detection component (31) includes a vertical tube (311) fixedly connected to the lower inner wall of the detection box (8). The upper end of the vertical tube (311) is of an open structure, and the lower end of the vertical tube (311) is of a closed structure. A light intensity sensor (312) is fixedly connected to the lower inner wall of the vertical tube (311). A frosted glass (32) is placed at the upper port of the vertical tube (311). A blocking plate (33) matching the spot is fixedly connected to the upper side wall of the frosted glass (32). An absorbent layer is coated on the surface of the blocking plate (33). A light-shielding cover (34) is fixedly connected to the inner wall of the detection box (8). A conical hole (35) matching the copper nozzle (9) is formed in the upper side wall of the light-shielding cover (34). The blocking plate (33) is located at the lowermost part of the conical hole (35).

6. The automatic laser welding machine for processing automotive reinforcement beams according to claim 1, wherein, An exhaust port (36) is formed in the right side wall of the detection box (8). An air flow sensor (37) is fixedly connected to the inner wall of the exhaust port (36).

7. An automatic laser welding machine for processing automotive reinforcing beams according to claim 3, characterized in that, A plurality of air outlet openings (38) are formed in the side wall of the rotating cylinder (222). The air outlet openings (38) are of an arc-shaped structure.

8. An automatic laser welding machine for processing automotive reinforcement beams according to claim 1, characterized in that, A drain pipe (39) is fixedly communicated with the left side wall of the detection box (8). A manual valve (40) is provided in the drain pipe (39).

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