Laser cutting device for automobile part production

Abstract

The invention discloses a laser cutting device for automobile part production, and relates to the field of automobile part production, the laser cutting device comprises an operation table, an optical fiber laser, a control box and a laser cutting head, and the optical fiber laser is connected with the laser cutting head through an optical fiber transmission cable. The three-jaw chuck can adapt to long pipes with different diameters, is stable in clamping and accurate in circle center, and is matched with the first synchronous belt for transmission, so that the long pipes rotate stably without blockage, and the cutting roundness is guaranteed. In the pipe conveying mechanism, a first air cylinder drives a movable column wheel to be flexibly attached to the pipe body, the movable column wheel made of rubber increases friction and protects the pipe face, a second synchronous belt drives multiple wheels to rotate synchronously, and stable conveying of the long pipe is achieved. The laser displacement sensor precisely controls the length, the optical fiber laser and the laser cutting head are matched for laser cutting, after linkage with the control box, automatic linkage of conveying, rotating and cutting is achieved, and the cutting precision and stability are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts manufacturing technology, specifically to a laser cutting device for automotive parts manufacturing. Background Technology

[0002] As the automotive industry upgrades towards large-scale production, lightweighting, and high reliability, long steel pipes, as core raw materials for body structural components (frame longitudinal beams, door frames), chassis system components (driveshafts, suspension rods), and fluid transport pipelines (fuel pipes, brake pipes), are experiencing a surge in both usage and processing requirements. Data shows that a single passenger vehicle requires over 200 meters of steel pipes of various specifications, and the use of high-strength steel pipes in new energy vehicles is even higher than in traditional gasoline vehicles due to optimized chassis structures.

[0003] However, in existing technologies, mechanical sawing requires physical cutting to complete the process, taking 3-5 minutes to cut a single 6-meter steel pipe. Furthermore, the saw blade needs to be replaced after wear, further reducing production efficiency. While flame cutting is suitable for thick-walled pipes, it has a long preheating time and a slow cutting speed. A more significant problem is that these technologies have poor adaptability to different steel pipe materials (such as high-strength steel and aluminum alloys). Changing the processing object requires readjusting equipment parameters or replacing cutting tools, resulting in long changeover times. This is severely out of sync with the automotive industry's flexible production requirements of "multiple varieties and rapid changeover." Summary of the Invention

[0004] The purpose of this invention is to provide a laser cutting device for the production of automotive parts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser cutting device for automotive parts production, comprising an operating table, a fiber laser, a control box, and a laser cutting head, wherein the fiber laser and the laser cutting head are connected by an optical fiber transmission cable, a tube rotation mechanism and a tube feeding mechanism are fixedly connected to the upper side of the operating table, the tube rotation mechanism is located on one side of the laser cutting head, a laser displacement sensor is disposed between the tube rotation mechanism and the tube feeding mechanism, a tube placement mechanism is disposed on the side of the operating table near the tube feeding mechanism, and an auxiliary mechanism is disposed at the notch on the upper side of the operating table; The control box is connected in series with the fiber laser, auxiliary mechanism, laser cutting head, tube rotation mechanism, tube feeding mechanism, and tube releasing mechanism via wires. The tube rotation mechanism includes a three-jaw chuck, a first driven pulley, a first synchronous belt, a first driving pulley, and a motor. The first driven pulley is coaxially fixedly connected to one side of the three-jaw chuck. The three-jaw chuck is rotatably connected to the upper protrusion of the operating table. A long tube passes through the middle of the three-jaw chuck. The laser cutting head is located above the other side of the three-jaw chuck. The first synchronous belt drives the first driven pulley, the first driving pulley, and the motor.

[0006] Preferably, the pipe feeding mechanism includes a fixed roller, a first base plate, a movable roller, a second driven pulley, a second synchronous belt, a second driving pulley, a motor, a second base plate, and a first cylinder, wherein the fixed roller and the movable roller roll and fit against both sides of the long pipe respectively.

[0007] Preferably, the fixed roller is rotatably connected to the upper side of the first base plate, the lower part of the shaft of the movable roller is coaxially fixed with the second driven pulley, the movable roller is rotatably connected to the upper side of the second base plate, the second base plate is slidably connected to the guide rail, and the first base plate is fixed to the end of the guide rail by bolts.

[0008] Preferably, the second synchronous belt drives the second driven pulley to the second driving pulley and the motor, the second driving pulley and the motor are fixedly installed in the middle of the second base plate, and the movable end of the first cylinder is fixedly connected to the end of the second base plate.

[0009] Preferably, the tube placement mechanism includes an inclined tube frame, a tube pushing assembly, an inner concave wheel, a crossbar, and a lifting assembly. Multiple sets of long tubes are placed parallel to each other in the inclined tube frame, and multiple sets of the tube pushing assembly are fixedly connected inside the inclined tube frame in a linear array.

[0010] Preferably, the push tube assembly includes a second cylinder and a pusher, the second cylinder being fixedly connected to the inclined tube frame, the pusher being fixedly connected to the movable end of the second cylinder, and the pusher being located below the longest tube at its lowest position.

[0011] Preferably, multiple sets of the concave wheels are evenly distributed and fixedly installed on the upper side of the crossbar, and multiple sets of the lifting components are fixedly connected to the lower side of the crossbar.

[0012] Preferably, the lifting assembly includes a threaded rod, a mounting plate, and a top bracket, the top bracket being fixedly connected to the lower side of the crossbar.

[0013] Preferably, one end of the threaded rod is rotatably connected to the middle of the top frame, and the rod portion of the top frame is slidably connected to the end of the mounting plate.

[0014] Preferably, the threaded rod is threadedly connected to the middle of the mounting plate, and the mounting plate is fixedly connected to the inside of the inclined pipe rack.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the three-jaw chuck can adapt to long tubes of different diameters, providing a stable grip and precise centering. Combined with the first synchronous belt drive, it ensures smooth, jam-free rotation of the long tube, guaranteeing the roundness of the cut. In the tube feeding mechanism, the first cylinder drives a movable roller to flexibly conform to the tube body. The rubber-material movable roller increases friction and protects the tube surface. The second synchronous belt drives multiple wheels to rotate synchronously, achieving stable transport of the long tube. A laser displacement sensor precisely controls the length, and a fiber laser and laser cutting head work together for laser cutting. After linkage with the control box, it achieves automated connection of transport, rotation, and cutting, significantly improving cutting accuracy and stability.

[0016] 2. In this invention, the inclined tube rack utilizes gravity to achieve orderly positioning of long tubes, eliminating the need for manual arrangement. The second cylinders of multiple tube-pushing components synchronously drive the pusher, ensuring even force distribution and precise feeding, preventing tube jamming. The arc-shaped structure of the concave wheel conforms to the tube body, providing stable support and reducing friction damage. The lifting component, through a threaded rod, finely adjusts the height of the crossbar, precisely matching the conveying height of the tube feeding mechanism. The overall structure achieves automatic storage, stable feeding, and height adaptation of long tubes, eliminating the need for frequent manual intervention. This provides a continuous and stable supply guarantee for subsequent batch cutting, improving the overall production efficiency of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a laser cutting device for producing automotive parts according to the present invention; Figure 2 This is a front view of a laser cutting apparatus for manufacturing automotive parts according to the present invention; Figure 3 This is a partial first three-dimensional structural schematic diagram of a laser cutting device for producing automotive parts according to the present invention. Figure 4 This is a partial second three-dimensional structural schematic diagram of a laser cutting device for producing automotive parts according to the present invention. Figure 5 This is a three-dimensional structural diagram of the tube-laying mechanism in a laser cutting device for producing automotive parts according to the present invention. Figure 6 This is a three-dimensional structural diagram and installation position diagram of the push tube assembly in a laser cutting device for automotive parts production according to the present invention. Figure 7 This is a three-dimensional structural diagram and installation position diagram of the lifting component in a laser cutting device for producing automotive parts according to the present invention.

[0018] In the diagram: 1. Operating console; 2. Fiber laser; 3. Control box; 4. Auxiliary mechanism; 5. Laser cutting head; 6. Tube rotation mechanism; 61. Three-jaw chuck; 62. First driven pulley; 63. First synchronous belt; 64. First driving pulley and motor; 7. Tube feeding mechanism; 71. Fixed roller; 72. First base plate; 73. Movable roller; 74. Second driven pulley; 75. Second synchronous belt; 76. Second driving pulley and motor; 77. Second base plate; 78. First cylinder; 8. Tube releasing mechanism; 81. Inclined tube rack; 82. Tube pushing assembly; 821. Second cylinder; 822. Push frame; 83. Concave wheel; 84. Crossbar; 85. Lifting assembly; 851. Threaded rod; 852. Mounting plate; 853. Top frame. Detailed Implementation

[0019] 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.

[0020] Example 1: Refer to Figures 1-4As shown: A laser cutting device for the production of automotive parts includes an operating table 1, a fiber laser 2, a control box 3, and a laser cutting head 5. The fiber laser 2 and the laser cutting head 5 are connected by an optical fiber transmission cable. A tube rotation mechanism 6 and a tube feeding mechanism 7 are fixedly connected to the upper side of the operating table 1. The tube rotation mechanism 6 is located on one side of the laser cutting head 5. A laser displacement sensor is set between the tube rotation mechanism 6 and the tube feeding mechanism 7. A tube placement mechanism 8 is set on the side of the operating table 1 near the tube feeding mechanism 7. An auxiliary mechanism 4 is set at the notch on the upper side of the operating table 1. The control box 3 is connected in series with the fiber laser 2, auxiliary mechanism 4, laser cutting head 5, tube rotation mechanism 6, tube feeding mechanism 7, and tube placement mechanism 8 via wires. The tube rotation mechanism 6 includes a three-jaw chuck 61, a first driven pulley 62, a first synchronous belt 63, a first driving pulley, and a motor 64. The first driven pulley 62 is coaxially fixed to one side of the three-jaw chuck 61. The three-jaw chuck 61 is rotatably connected to the upper protrusion of the operating table 1. The long tube passes through the middle of the three-jaw chuck 61. The laser cutting head 5 is located above the other side of the three-jaw chuck 61. The first synchronous belt 63 drives the first driven pulley 62, the first driving pulley, and the motor 64. The tube feeding mechanism 7 includes a fixed roller 71, a first base plate 72, a movable roller 73, a second driven pulley 74, a second synchronous belt 75, a second driving pulley, a motor 76, a second base plate 77, and a first cylinder 78. The fixed roller 71 and the movable roller 73 roll and fit against both sides of the long tube. A fixed roller 71 is rotatably connected to the upper side of the first base plate 72. The lower part of the shaft of the movable roller 73 is coaxially fixed with the second driven pulley 74. The movable roller 73 is rotatably connected to the upper side of the second base plate 77. The second base plate 77 is slidably connected to the guide rail. The first base plate 72 is fixed to the end of the guide rail by bolts. A second synchronous belt 75 drives the second driven pulley 74 to the second driving pulley and the motor 76. The second driving pulley and the motor 76 are fixedly installed in the middle of the second base plate 77. The movable end of the first cylinder 78 is fixedly connected to the end of the second base plate 77.

[0021] In this embodiment, the tube rotation mechanism 6 is the core rotating component during long tube cutting. Its three-jaw chuck 61 has the function of firmly clamping the long tube, which can adapt to the needs of long tubes of different diameters and ensures that the center of the long tube is stable during rotation, providing a basic guarantee for the roundness accuracy of laser cutting. The first active pulley and motor 64 drive the first driven pulley 62 to rotate through the first synchronous belt 63, thereby driving the three-jaw chuck 61 and the long tube to rotate at a uniform speed. The synchronous belt drive is smoother than the gear drive, which can effectively avoid jamming or speed fluctuation during rotation, ensuring that the laser cutting head 5 can cut evenly along the circumference of the long tube.

[0022] In the pipe feeding mechanism 7, the fixed roller 71 and the movable roller 73 cooperate to form a long pipe conveying and clamping structure. The first cylinder 78 pushes the second base plate 77 to slide along the guide rail, realizing the contact and separation of the movable roller 73 and the long pipe. This adjustable structure can flexibly adapt to the conveying needs of long pipes of different diameters. The second driving pulley and motor 76 drive multiple sets of second driven pulleys 74 and movable roller 73 to rotate synchronously through the second synchronous belt 75. The movable roller 73 is made of rubber, which can increase the friction with the long pipe while avoiding damage to the pipe surface, ensuring that the long pipe can be conveyed smoothly and accurately to the pipe rotation mechanism 6.

[0023] Furthermore, the laser displacement sensor installed between the tube rotation mechanism 6 and the tube feeding mechanism 7 can monitor the conveying distance of the long tube in real time, achieving precise control of the fixed-length cutting of the long tube. The auxiliary mechanism 4, before cutting, uses a cylinder to push the disc to fit against the end of the long tube, effectively preventing the long tube from tilting due to the weight of the cantilever end during rotational cutting, further improving cutting accuracy. Overall, in this embodiment, the tube rotation mechanism 6, the tube feeding mechanism 7, the laser displacement sensor, and the auxiliary mechanism 4 work together to provide core structural support for the precise conveying, stable rotation, and high-precision cutting of the long tube. Combined with the centralized control of the control box 3, automated control of the cutting process is achieved.

[0024] Example 2: According to Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the pipe-laying mechanism 8 includes an inclined pipe frame 81, a pipe-pushing assembly 82, concave wheels 83, a crossbar 84, and a lifting assembly 85. Multiple sets of long pipes are placed parallel to each other within the inclined pipe frame 81. Multiple sets of pipe-pushing assemblies 82 are fixedly connected inside the inclined pipe frame 81 in a linear array. Each pipe-pushing assembly 82 includes a second cylinder 821 and a pusher 822. The second cylinder 821 is fixedly connected to the inclined pipe frame 81, and the pusher 822 is fixedly connected to the movable end of the second cylinder 821. The pusher 822 is located below the lowest position of the long pipe. Multiple sets of concave wheels... 83 are evenly distributed and fixedly installed on the upper side of the crossbar 84. Multiple sets of lifting components 85 are fixedly connected to the lower side of the crossbar 84. The lifting component 85 includes a threaded rod 851, a mounting plate 852 and a top frame 853. The top frame 853 is fixedly connected to the lower side of the crossbar 84. One end of the threaded rod 851 is rotatably connected to the middle of the top frame 853. The rod part of the top frame 853 is slidably connected to the end of the mounting plate 852. The threaded rod 851 is threadedly connected to the middle of the mounting plate 852. The mounting plate 852 is fixedly connected to the inside of the inclined tube frame 81.

[0025] In this embodiment, the tube-laying mechanism 8 serves as the core component for feeding the device. Its inclined tube frame 81 adopts an inclined design, utilizing the weight of the long tubes themselves to achieve natural positioning of the tubes, ensuring that multiple sets of long tubes remain in an orderly arrangement, facilitating continuous feeding. The tube-pushing assembly 82 is the execution unit for the feeding action. Multiple sets of second cylinders 821 are simultaneously activated, driving the pusher 822 upward. The upper structure of the pusher 822 is adapted to the outer circle of the long tube, stably lifting the lowest-positioned long tube and feeding it into the gap of the inclined tube frame 81, preventing the long tube from shifting or getting stuck during feeding. The array distribution of multiple sets of pusher assemblies ensures uniform force on the long tube, improving the stability of the feeding action. The concave wheel 83 adopts a concave arc structure, closely fitting the outer circle of the long tube. It can effectively support the long tube and rotate synchronously with the tube body during transport, reducing frictional damage between the tube body and the supporting components. The even distribution of multiple sets of concave wheels 83 on the crossbar 84 ensures the balance of the long tube support.

[0026] The lifting assembly 85 is a key structure for fine-tuning the height of the long tube. By synchronously rotating the handles below multiple sets of threaded rods 851, the threaded rods 851 spirally move within the threaded holes of the mounting plate 852, driving the top frame 853 to move up and down along the end sliding hole of the mounting plate 852. This achieves height adjustment of the crossbar 84 and the concave wheel 83. This mechanical adjustment method is precise and reliable, and can adjust the height of the long tube to match the position of the fixed column wheel 71 and the movable column wheel 73 of the tube feeding mechanism 7, ensuring that the long tube can smoothly enter the conveying stage. Overall, the tube feeding mechanism 8 in this embodiment, through the orderly storage of material by the inclined tube rack 81, the precise feeding of the tube pushing assembly 82, the stable support of the concave wheel 83, and the height fine-tuning of the lifting assembly 85, constructs an efficient and stable automatic feeding system, providing a continuous and reliable supply of long tubes for the mass production of the device. With the linkage control of the control box 3, seamless connection between feeding and subsequent conveying and cutting processes is achieved.

[0027] The usage and working principle of this device are as follows: In use, multiple long tubes are placed at the inclined position of the inclined tube rack 81. The control box 3 activates multiple sets of second cylinders 821, simultaneously lifting the pusher 822 upwards. The uppermost part of the pusher 822 lifts the lowest-positioned long tube. After being lifted to a certain height, the long tube enters the gap in the inclined tube rack 81 from the inclined position and falls onto multiple sets of concave wheels 83. The end of the long tube falls between the fixed column wheel 71 and the movable column wheel 73. By simultaneously rotating the handles below multiple sets of threaded rods 851, the threaded rods 851 spiral in the middle of the mounting plate 852 and then move upwards or downwards. This is used to push or pull the top frame 853. After its rod slides vertically at both ends of the mounting plate 852, multiple sets of top frames 853 synchronously adjust the height of the crossbar 84. After the height of multiple sets of concave wheels 83 on it changes, the height of the long tube is finely adjusted. Then, the control box 3 controls the extension of the movable rod of the first cylinder 78, and the second base plate 77 moves on the guide rail, thereby driving multiple sets of movable rollers 73 to approach and fit against the long tube. Thus, the long tube simultaneously fits against the fixed roller 71 and the movable roller 73. Then, the second drive pulley and motor 76 are controlled to work. After the wheel body of the second drive pulley and motor 76 rotates, it passes through the second synchronous belt. 75 drives multiple sets of second driven pulleys 74 to rotate in the same direction, thereby driving multiple sets of movable rollers 73 connected to each other to rotate. The rubber movable rollers 73 push the long tube into the three-jaw chuck 61 and extend it outward by friction. At this time, the laser displacement sensor measures the distance the long tube moves. After reaching the preset length, the cylinder in the auxiliary mechanism 4 pushes the disc to fit against the end of the long tube to avoid tilting during cutting and affecting the cutting. The second driving pulley and motor 76 stop working. At this time, the three-jaw chuck 61 is tightened with the help of tools. The control box 3 controls the first cylinder 78 to retract. The movable rollers 73 and the fixed rollers 71 do not restrict the rotation of the long tube. The first active pulley and motor 64 are then controlled to operate. The first active pulley and motor 64 drive the first driven pulley 62 to rotate via the first synchronous belt 63, thereby driving the three-jaw chuck 61 and the clamped long tube to rotate. Then, the fiber laser 2 and laser cutting head 5 are controlled by the control box 3 to perform laser cutting on the rotating long tube. The cut part is collected from the notch of the operating table 1. After that, the first cylinder 78 extends again, the fixed column wheel 71 and the movable column wheel 73 re-fit the long tube, and the remaining part of the long tube is fed back into the three-jaw chuck 61. This cycle is repeated to achieve batch fixed-length laser cutting of long tubes.

[0028] 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 cutting device for automotive parts manufacturing, comprising an operating table (1), a fiber laser (2), a control box (3), and a laser cutting head (5), characterized in that: The fiber laser (2) and the laser cutting head (5) are connected by an optical fiber transmission cable. The upper side of the operating table (1) is fixedly connected to a tube rotation mechanism (6) and a tube feeding mechanism (7). The tube rotation mechanism (6) is located on one side of the laser cutting head (5). A laser displacement sensor is provided between the tube rotation mechanism (6) and the tube feeding mechanism (7). A tube placement mechanism (8) is provided on the side of the operating table (1) near the tube feeding mechanism (7). An auxiliary mechanism (4) is provided at the notch on the upper side of the operating table (1). The control box (3) is connected in series with the fiber laser (2), auxiliary mechanism (4), laser cutting head (5), tube rotation mechanism (6), tube feeding mechanism (7) and tube releasing mechanism (8) via wires. The tube rotation mechanism (6) includes a three-jaw chuck (61), a first driven pulley (62), a first synchronous belt (63), a first driving pulley and a motor (64). The first driven pulley (62) is coaxially fixedly connected to one side of the three-jaw chuck (61). The three-jaw chuck (61) is rotatably connected to the upper protrusion of the operating table (1). A long tube passes through the middle of the three-jaw chuck (61). The laser cutting head (5) is located above the other side of the three-jaw chuck (61). The first synchronous belt (63) drives the first driven pulley (62) and the first driving pulley and the motor (64).

2. The laser cutting device for automotive parts production according to claim 1, characterized in that: The pipe feeding mechanism (7) includes a fixed roller (71), a first base plate (72), a movable roller (73), a second driven pulley (74), a second synchronous belt (75), a second driving pulley, a motor (76), a second base plate (77), and a first cylinder (78). The fixed roller (71) and the movable roller (73) roll and fit against the two sides of the long pipe respectively.

3. The laser cutting device for automotive parts production according to claim 2, characterized in that: The fixed roller (71) is rotatably connected to the upper side of the first base plate (72). The lower part of the shaft of the movable roller (73) is coaxially fixed with the second driven pulley (74). The movable roller (73) is rotatably connected to the upper side of the second base plate (77). The second base plate (77) is slidably connected to the guide rail. The first base plate (72) is fixed to the end of the guide rail by bolts.

4. The laser cutting device for automotive parts production according to claim 3, characterized in that: The second synchronous belt (75) drives the second driven pulley (74) to the second driving pulley and the motor (76). The second driving pulley and the motor (76) are fixedly installed in the middle of the second base plate (77). The movable end of the first cylinder (78) is fixedly connected to the end of the second base plate (77).

5. The laser cutting device for automotive parts production according to claim 4, characterized in that: The tube placement mechanism (8) includes an inclined tube frame (81), a tube pusher assembly (82), an inner concave wheel (83), a crossbar (84), and a lifting assembly (85). Multiple sets of long tubes are placed parallel to each other in the inclined tube frame (81), and multiple sets of the tube pusher assembly (82) are fixedly connected inside the inclined tube frame (81) in a linear array.

6. The laser cutting device for automotive parts production according to claim 5, characterized in that: The push tube assembly (82) includes a second cylinder (821) and a pusher (822). The second cylinder (821) is fixedly connected to the inclined tube frame (81), and the pusher (822) is fixedly connected to the movable end of the second cylinder (821). The pusher (822) is located below the lowest position of the long tube.

7. The laser cutting device for automotive parts production according to claim 6, characterized in that: Multiple sets of the concave wheels (83) are evenly distributed and fixedly installed on the upper side of the crossbar (84), and multiple sets of the lifting components (85) are fixedly connected to the lower side of the crossbar (84).

8. The laser cutting device for automotive parts production according to claim 7, characterized in that: The lifting assembly (85) includes a threaded rod (851), a mounting plate (852), and a top frame (853), the top frame (853) being fixedly connected to the lower side of the crossbar (84).

9. A laser cutting device for producing automotive parts according to claim 8, characterized in that: One end of the threaded rod (851) is rotatably connected to the middle of the top frame (853), and the rod of the top frame (853) is slidably connected to the end of the mounting plate (852).

10. A laser cutting device for manufacturing automotive parts according to claim 9, characterized in that: The threaded rod (851) is threadedly connected to the middle of the mounting plate (852), which is fixedly connected to the inside of the inclined tube rack (81).

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