Laser cutting device for automobile mudguard

Abstract

The application relates to the field of laser cutting, and particularly discloses a laser cutting device for automobile mudguards, which comprises a machine tool, a cross beam is slidably arranged on the machine tool, a cutting head is slidably and liftably arranged on the cross beam, a clamping piece for fixing a mudguard is arranged on the machine tool, an air suction pipe is arranged on the machine tool, a fan is arranged at the bottom of the machine tool, a threaded rod is rotatably arranged on the side wall of the cross beam, a fixing plate is threadedly connected to the threaded rod, the air suction pipe is arranged on the fixing plate, a synchronizing piece for driving the air suction pipe to move is arranged on the machine tool, and a lifting piece for lifting the air suction pipe is arranged on the machine tool. The application has the effects of strengthening the cooling effect on the cut mudguard, reducing the emission of toxic gas and smoke generated during cutting, and improving the safety of workers.

Description

Technical Field

[0001] This application relates to the field of laser cutting, and in particular to a laser cutting device for automobile mudguards. Background Technology

[0002] Laser cutting technology uses a high-energy-density laser beam to irradiate the surface of a material, causing it to melt or vaporize locally and instantaneously. Compared to traditional mechanical cutting, laser cutting has advantages such as smooth, burr-free cuts, narrow heat-affected zones, and the ability to process complex curves, making it particularly suitable for the high-precision machining requirements of automotive parts.

[0003] Car mudguards are generally made of modified polypropylene (PP), ABS engineering plastics, or glass fiber reinforced composite materials. The laser cutting device mainly consists of a laser cutting head, machine tool, transmission components, and clamping parts. When using the laser cutting device to cut the mudguard, the operator first needs to place the extruded arc-shaped mudguard on the machine tool, fix the mudguard with the clamping device, and then start the transmission components to drive the laser cutting head to move precisely and cut off the excess part of the extruded mudguard.

[0004] Regarding the aforementioned technologies: During the laser cutting process of mudguards, local high temperatures and failure to cool down in time can easily cause edge warping and micro-cracks, as well as generate dust and toxic gases. These defects can affect the assembly precision of the mudguards and the vehicle body, and may also lead to the risk of mudguard cracking during long-term use. Utility Model Content

[0005] In order to improve the edge warping and micro-cracks that occur during the laser cutting of mudguards and reduce subsequent quality problems of mudguards, this application provides a laser cutting device for automobile mudguards.

[0006] The laser cutting device for automobile mudguards provided in this application adopts the following technical solution: A laser cutting device for automobile mudguards includes a machine tool, a crossbeam slidably mounted on the machine tool, a cutting head slidably and vertically mounted on the crossbeam, a clamping component for fixing the mudguard on the machine tool, a suction pipe mounted on the upper part of the machine tool, a fan mounted on the bottom of the machine tool, a threaded rod rotatably mounted on the side wall of the crossbeam, a fixing plate threadedly connected to the threaded rod, the suction pipe mounted on the fixing plate, a synchronizing component for driving the suction pipe to move on the machine tool, and a lifting component for raising and lowering the suction pipe on the machine tool.

[0007] By adopting the above technical solution, after the mudguard is placed on the machine tool, it is fixed on the machine tool with clamping components. The crossbeam drives the cutting head to move along the length direction of the machine tool, and the cutting head moves along the width direction of the machine tool along the crossbeam, so that the cutting head cuts the mudguard. At the same time, the movement of the crossbeam and the movement of the cutting head drive the synchronizing component, which drives the threaded rod to rotate. The threaded rod drives the fixed plate to move along the width direction of the machine tool, and the crossbeam moves along the length direction of the machine tool, which drives the screw rod to move along the length direction of the machine tool, so that the fixed plate also moves along the length direction of the machine tool. This causes the suction pipe to move along the cutting trajectory, and the suction pipe sucks air from the cut mudguard, absorbing the smoke generated during the cutting of the mudguard. At the same time, it reduces the temperature of the mudguard after cutting, so that the mudguard can be cooled quickly, shortening the cooling time of the mudguard after cutting, and effectively improving the quality of the finished mudguard. When the cutting head cuts on the curved mudguard, the cutting head moves up and down along the height direction. The lifting component simultaneously drives the suction pipe to move along the height direction, so that the suction pipe fits the shape of the mudguard. This effectively improves the suction pipe's ability to absorb smoke and other impurities, and also improves the suction pipe's cooling efficiency on the mudguard, thus improving the finished quality of the mudguard.

[0008] Optionally, a motor is mounted on the crossbeam, a lead screw is rotatably mounted on the crossbeam, a mounting plate is raised and lowered on the lead screw, the cutting head is mounted on the mounting plate, the synchronizing element is a transmission rod rotatably mounted on the side wall of the crossbeam, a first bevel gear is fixedly connected to both ends of the transmission rod, a second bevel gear is fixedly connected to the output end of the motor, and a third bevel gear is fixedly connected to the threaded rod, with the two first bevel gears meshing with the second bevel gear and the third bevel gear respectively.

[0009] By adopting the above technical solution, when the motor starts, it drives the lead screw to rotate. The lead screw drives the mounting plate to move along the width direction of the machine tool, so that the cutting head can cut the mudguard in the width direction. At the same time, the motor drives the second bevel gear to rotate. The first bevel gear meshes with the second bevel gear. The motor drives the transmission rod to rotate. The first bevel gear on the end of the transmission rod away from the lead screw meshes with the third bevel gear. The rotation of the transmission rod drives the threaded rod to rotate. The rotation of the threaded rod drives the fixed plate to move along the width direction of the machine tool, thereby moving the suction pipe. The suction pipe cools the cut mudguard in time and absorbs the smoke generated during cutting in time, which improves the production quality of mudguards and improves the safety of workers.

[0010] Optionally, the lifting component includes a lifting frame that is lifted and mounted on the crossbeam. The lifting frame is movably fitted with the mounting plate. The lifting frame passes through the mounting plate. A lifting plate is slidably mounted on the side of the lifting frame away from the mounting plate. A telescopic rod is mounted on the fixed plate. The lifting plate is fixed to the telescopic end of the telescopic rod. A preheating component for preheating the mudguard is mounted on the lifting plate.

[0011] By adopting the above technical solution, when the mounting plate moves up and down along the height direction on the crossbeam, it drives the lifting frame to move up and down along the height direction of the machine tool. When the lifting frame moves, it drives the lifting plate to move along the height direction. The telescopic rod improves the stability of the lifting plate during movement, and makes the suction pipe on the lifting plate also move along the height direction of the machine tool, so that the suction pipe fits the shape of the mudguard more closely, effectively improving the suction of impurities and smoke generated during the cutting process, and at the same time, more effectively cooling the cutting part; the limit rod on the fixed plate can improve the stability of the lifting plate during the lifting process.

[0012] Optionally, the preheating assembly includes a blower pipe rotatably mounted on the lifting plate, the blower pipe being connected to the fan, a rotating plate rotatably mounted on the lifting plate, the blower pipe and the suction pipe being respectively mounted at both ends of the rotating plate, and the preheating assembly further includes a driving component for driving the rotating plate to rotate.

[0013] By adopting the above technical solution, during the cutting process of the mudguard, the suction pipe can absorb the smoke and impurities generated during the cutting process, and at the same time cool down the mudguard. Meanwhile, the hot air drawn in by the suction pipe is driven by the fan to the blower pipe, which preheats the uncut areas. This reduces the quality problems caused by high temperatures in the process of laser cutting the mudguard. The drive component drives the rotating plate to rotate, and the suction pipe on the rotating plate draws air from the cut mudguard. The blower pipe on the rotating plate preheats the uncut areas of the mudguard. At the same time, different areas of the mudguard are worked, which improves the production quality of the mudguard.

[0014] Optionally, the driving component includes a stepper motor mounted on the lifting plate, a rotating shaft rotatably mounted on the lifting plate and fixed to the output end of the stepper motor, an infrared sensor mounted on the lifting plate, and a controller mounted on the machine tool, the controller being electrically connected to the stepper motor.

[0015] By adopting the above technical solution, when the infrared sensor detects the high temperature generated at the cutting part, the stepper motor is started. The stepper motor rotates, which drives the rotating shaft to rotate. The rotating shaft drives the suction pipe on the rotating plate to rotate to one side of the cutting part. At the same time, the suction pipe absorbs the smoke and impurities generated during cutting, thereby reducing the temperature of the cutting part. The suction pipe and the blowing pipe located at both ends of the rotating plate maintain a certain distance from the mudguard being cut, reducing the impact of the suction pipe and the blowing pipe on the cutting head cutting the mudguard.

[0016] Optionally, the clamping member is a first clamping block and a second clamping block rotatably mounted on the machine tool. A clamping rod is fixedly connected to the crossbeam. The second clamp is mounted on the clamping rod. The clamping rod has several positioning holes. A positioning rod is provided on the crossbeam. The positioning rod is inserted into and adapted to the positioning holes. A transmission member for rotating the clamping rod is provided on the crossbeam.

[0017] By adopting the above technical solution, when mudguards of different specifications are placed on the machine tool, the sliding clamping rod makes the second clamping block abut against the mudguard. Then, the positioning rod is inserted into the corresponding positioning hole on the clamping rod to fix the mudguards of different specifications. The rotation of the transmission component drives the first clamping block to move, so that the first clamping block and the second clamping block are at different heights, thereby keeping the cutting head perpendicular to the arc-shaped mudguard and improving the quality of the finished product after cutting the mudguard.

[0018] Optionally, the transmission component is an adjusting rod rotatably mounted on the side wall of the crossbeam, a fourth bevel gear is rotatably mounted on the adjusting rod, a fifth bevel gear is coaxially fixed to the transmission rod, the fourth bevel gear meshes with the fifth bevel gear, a gear is fixedly mounted on the end of the adjusting rod away from the fourth bevel gear, a rack that meshes with the gear is slidably mounted on the crossbeam, and the first clamping block is mounted on the rack.

[0019] By adopting the above technical solution, when the transmission rod rotates, the fifth bevel gear meshes with the fourth bevel gear and drives the adjusting rod to rotate. The rotation of the adjusting rod drives the gear to rotate, and the gear drives the rack to move along the height direction of the machine tool, thereby changing the height of the first clamping block on the rack, thereby adjusting the clamping angle of the mudguard, so that the cutting head is perpendicular to the arc-shaped mudguard, thus improving the finished quality of the mudguard after cutting.

[0020] Optionally, a filter box for filtering and adsorbing smoke, toxic gases and impurities is connected between the suction pipe and the fan.

[0021] By adopting the above technical solution, the suction pipe draws the smoke and impurities generated during cutting into the filter box, which filters the impurities and adsorbs the smoke and toxic gases, reducing the amount of smoke and impurities introduced into the outside through the air pipe, thus effectively improving the safety of the staff.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. When it is necessary to cut the arc-shaped mudguard, the motor drives the lead screw to rotate and the transmission rod to rotate. The transmission rod drives the threaded rod to rotate, so that the fixed plate moves along the width of the machine tool. This makes the suction pipe and blowing pipe on the fixed plate move synchronously with the cutting head, which improves the suction pipe's absorption effect on toxic gases, fumes and impurities generated during cutting, and improves the preheating effect of the blowing pipe on the mudguard, thus improving the cutting quality of the mudguard by the laser cutting head. 2. When the mounting plate moves the cutting head along the height direction, the mounting plate moves the lifting frame, and the lifting frame moves the lifting plate. At the same time, the stepper motor drives the rotating shaft to rotate, so that the suction pipe on the rotating plate is located on one side of the mudguard being cut, which effectively improves the suction effect of the suction pipe and improves the preheating effect of the blowing pipe on the mudguard. 3. When the transmission rod rotates, it drives the adjusting rod to rotate. The rotation of the adjusting rod drives the rack to rotate. The rack drives the first clamping block to move along the height direction, so that the cutting surface of the arc-shaped mudguard is perpendicular to the cutting head, enabling the cutting head to cut the arc-shaped mudguard and improving the cutting effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle; Figure 3 This is a schematic diagram of the overall structure from another perspective of an embodiment of this application; Figure 4 yes Figure 3 Enlarged diagram of part B.

[0024] Reference numerals: 1. Machine tool; 11. Crossbeam; 12. Cutting head; 21. Suction pipe; 22. Blowing pipe; 23. Fan; 24. Filter box; 31. Motor; 32. Lead screw; 33. Mounting plate; 34. Threaded rod; 351. Transmission rod; 352. First bevel gear; 353. Second bevel gear; 354. Third bevel gear; 36. Fixing plate; 41. Lifting frame; 42. Lifting plate; 43. Telescopic rod; 51. Stepper motor; 52. Infrared sensor; 53. Rotating shaft; 54. Rotating plate; 61. Clamping rod; 611. Positioning hole; 612. Positioning rod; 62. First clamping block; 63. Second clamping block; 641. Adjusting rod; 642. Fourth bevel gear; 643. Fifth bevel gear; 644. Gear; 645. Rack. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0026] This application discloses a laser cutting device for automobile mudguards. (Refer to...) Figure 1-3 The laser cutting device for car mudguards includes a machine tool 1, on which a linear guide rail is installed, with the direction of the linear guide rail being the length direction of the machine tool 1. A crossbeam 11 is slidably mounted on the guide rail. A drive motor is installed at the bottom of the machine tool 1 to drive the crossbeam 11 to move. A lead screw 32 is rotatably mounted on the crossbeam 11, and a moving plate is threadedly connected to the lead screw 32. A motor 31 is installed on the crossbeam 11 to drive the lead screw 32 to rotate, and the output end of the motor 31 is coaxially fixedly connected to the lead screw 32. A sliding groove is opened on the moving plate, and a mounting plate 33 is slidably mounted in the sliding groove. An electric telescopic rod or nylon drag chain is installed on the crossbeam 11 to drive the mounting plate 33 to rise and fall. A laser cutting head 12 is fixedly or threadedly connected to the mounting plate 33. A worktable is provided on the machine tool 1, and a laser cutting head 12 is mounted on the worktable. The machine tool 11 is equipped with a clamping device. A threaded rod 34 is rotatably mounted on the side wall of the crossbeam 11. The arrangement direction of the threaded rod 34 is parallel to the width direction of the machine tool 1. A locking rod is fixedly connected to the side wall of the crossbeam 11. A fixing plate 36 is threadedly connected to the threaded rod 34. A suction pipe 21 for cooling the mudguard workpiece is mounted on the fixing plate 36. A fan 23 is mounted below the machine tool 1. The suction pipe 21 is connected to the fan 23. A filter box 24 is connected between the fan 23 and the suction pipe 21. An adsorption plate 241 is mounted inside the filter box 24. The locking rod passes through the fixing plate 36 and is movably engaged with the fixing plate 36. The fixing plate 36 is located below the worktable. A synchronizing device for driving the suction pipe 21 to move is mounted on the machine tool 1. A lifting device for lifting the branch pipe is mounted on the machine tool 1. The synchronizing element is a transmission rod 351 rotatably mounted on the side wall of the crossbeam 11. Both ends of the transmission rod 351 are coaxially fixed with a first bevel gear 352. The output end of the motor 31 is coaxially fixed with a second bevel gear 353. The direction of the transmission rod 351 is parallel to the direction of the side wall of the crossbeam 11. A third bevel gear 354 is coaxially fixed to one end of the threaded rod 34 near the transmission rod 351. The second bevel gear 353 meshes with the first bevel gear 352 at the upper end of the transmission rod 351. The first bevel gear 352 on the other end of the transmission rod 351 meshes with the third bevel gear 354.

[0027] The unprocessed arc-shaped mudguard is placed on the worktable along the width direction of the machine tool 1 and fixed with clamping parts. The motor 31 rotates and drives the lead screw 32 to rotate. The lead screw 32 rotates and drives the moving plate to move along the width direction of the machine tool 1. The moving plate drives the mounting plate 33 to move. The mounting plate 33 drives the cutting head 12 to move, so that the cutting head 12 can cut the mudguard. The output end of motor 31 rotates and drives the second bevel gear 353 to rotate. The first bevel gear 352 meshes with the second bevel gear 353, thereby driving the transmission rod 351 to rotate. The first bevel gear 352 on the end of the transmission rod 351 away from motor 31 meshes with the third bevel gear 354. The rotation of the transmission rod 351 drives the threaded rod 34 to rotate. The rotation of the threaded rod 34 drives the fixed plate 36 to rotate. The suction pipe 21 on the fixed plate 36 moves with the fixed plate 36. The fixed plate 36 is located below the cutting head 12, so that the suction pipe 21 can timely suction and cool the mudguard cutting part. At the same time, it adsorbs the smoke, toxic gases and impurities generated by cutting into the filter box 24. The filter box 24 filters the impurities, and the adsorption plate in the filter box 24 adsorbs the smoke and toxic gases, effectively reducing the emission of toxic substances generated by laser cutting of mudguards into the air and improving the safety of workers. When cutting the curved part of the mudguard, the electric telescopic rod drives the mounting plate 33 to move along the height direction, and at the same time the lifting component drives the suction pipe 21 to move along the height direction. The distance that the mounting plate 33 moves is the same as the distance that the suction pipe 21 moves, so that the suction pipe 21 conforms to the shape of the mudguard when it moves. This improves the cooling effect of the suction pipe 21 on the mudguard after cutting, reduces the emission of toxic gases and fumes, and improves the safety of the workers.

[0028] Reference Figure 1 and Figure 2 The lifting component is a lifting frame 41 that is lifted and installed on the crossbeam 11. The mounting plate 33 has a sliding hole that is adapted to slide with the lifting frame 41. The side wall of the crossbeam 11 has a lifting hole. The side wall of the lifting frame 41 is movably fitted with the lifting hole. The bottom of the lifting frame 41 is slidably provided with a lifting plate 42. A telescopic rod 43 is fixedly connected to the fixing plate 36. The telescopic end of the telescopic rod 43 is fixedly connected to the lifting plate 42. The lifting plate 42 is provided with a preheating component for preheating the mudguard. The preheating assembly includes a rotating plate 54 rotatably mounted on a lifting plate 42. A blower pipe 22 is fixedly connected to one end of the rotating plate 54, and a suction pipe 21 is fixedly connected to the other end of the rotating plate 54. The blower pipe 22 is connected to a fan 23. The preheating assembly also includes a driving component for driving the rotating plate 54 to rotate. The driving component includes a stepper motor 51 fixedly mounted to the bottom of the lifting plate 42. A rotating shaft 53 is rotatably mounted on the lifting plate 42. The rotating shaft 53 is coaxially fixedly connected to the output end of the stepper motor 51. An infrared sensor 52 is fixedly mounted on the end of the rotating plate 54 near the suction pipe 21. A controller is provided on the machine tool 1. The controller type can be a programmable logic controller, a microcontroller, etc. The controller is electrically connected to the stepper motor 51.

[0029] When the mounting plate 33 moves the cutting head 12 along the height direction, the mounting plate 33 also moves the lifting frame 41. The moving holes on the mounting plate 33 reduce the influence of the lifting frame 41 on the movement of the mounting plate 33 along the width direction of the machine tool 1. The lifting holes on the crossbeam 11 improve the stability of the lifting frame 41 when moving along the height direction. The movement of the lifting frame 41 moves the lifting plate 42, and the telescopic rod 43 on the fixed plate 36 extends and retracts at the same time. The movement of the lifting plate 42 causes the suction pipe 21 and the blowing pipe 22 to fit against the mudguard, so that the suction pipe 21 can absorb the smoke, toxic gases and impurities generated by cutting, and at the same time cool the part of the mudguard after cutting, reducing the cooling time of the mudguard and improving the finished quality of the mudguard. The blowing pipe 22 preheats the part of the mudguard that is not being cut, reducing the deformation problem that occurs when the mudguard is suddenly exposed to high temperature cutting.

[0030] When the infrared sensor 52 detects the high temperature generated by cutting the mudguard, it transmits the signal to the controller. The controller controls the stepper motor 51 to rotate, which drives the rotating shaft 53 to rotate. The rotating shaft 53 drives the rotating plate 54 to rotate, so that the suction pipe 21 on the rotating plate 54 is located on the side of the mudguard that is being cut, and the blowing pipe 22 is located on the side of the mudguard that is not being cut. At the same time, the rotating plate 54 keeps the suction pipe 21 and the blowing pipe 22 at a certain distance from the cutting head 12, reducing the impact of the suction pipe 21 and the blowing pipe 22 on the cutting during operation.

[0031] Reference Figure 1 , Figure 3 and Figure 4 The clamping component is a clamping rod 61 slidably mounted on the crossbeam 11. Several positioning holes 611 are formed on the clamping rod 61. Positioning rods 612 are inserted into the side wall of the crossbeam 11, and the positioning rods 612 are fitted into the positioning holes 611. A second clamping block 63 is fixedly connected to the end of the clamping rod 61. A first clamping block 62 is raised and lowered on the other side wall of the crossbeam 11. The machine tool 1 is equipped with a driving component for moving the first clamping block 62. The driving component is an adjusting rod 641 rotatably mounted on the side wall of the crossbeam 11. A fourth bevel gear 642 is fixedly connected to one end of the adjusting rod 641 near the crossbeam 11, and a fifth bevel gear 642 is coaxially fixed to the transmission rod 351. Gear 643, fourth bevel gear 642 and fifth bevel gear 643 mesh with each other. Gear 644 is fixedly connected to the end of adjusting rod 641 away from fourth bevel gear 642. Adjusting plate for fixing adjusting rod 641 is fixedly connected to crossbeam 11. Rack 645 is slidably arranged on adjusting plate. Gear 644 meshes with rack 645. First clamping block 62 is rotatably arranged on rack 645. If the curvature of the arc mudguard is large, the first clamping block 62 can be rotatably arranged on clamping rod 61 and the second clamping block 63 can be rotatably arranged on rack 645, which reduces the deformation and detachment of the clamped part of the mudguard when the first clamping block 62 moves.

[0032] When the uncut mudguard is placed on machine tool 1, the length of the clamping rod 61 is adjusted according to the different specifications of the mudguard, and the positioning rod 612 is inserted into the positioning hole 611 so that the second clamping block 63 clamps the mudguard. When the transmission rod 351 rotates, the fourth bevel gear 642 meshes with the fifth bevel gear 643. The rotation of the transmission rod 351 drives the adjusting rod 641 to rotate, the adjusting rod 641 drives the gear 644 to rotate, the gear 644 drives the rack 645 to move, and the rack 645 drives the first clamping block 62 to move along the height direction. The length of the clamping rod 61 can be adjusted according to the arc of the mudguard. The dimensions and specifications are set, including the number of teeth on the fourth bevel gear 642 and the fifth bevel gear 643, the number of teeth on gear 644 and rack 645, and the length of rack 645; so that the angle of rotation of the mudguard corresponds to the distance of movement of the cutting head 12. Alternatively, a differential box can be set between the adjusting rods 641 to adjust the speed of gear 644, so that the angle of rotation of the mudguard corresponds to the distance of movement of the cutting head 12. The movable first clamping block 62 is used to clamp the arc-shaped mudguard, so that the planar moving cutting head 12 cuts the arc-shaped mudguard, reducing manufacturing costs.

[0033] The implementation principle of the laser cutting device for automobile mudguards in this application embodiment is as follows: When the arc-shaped mudguard is placed on the machine tool 1, the length of the clamping rod 61 is adjusted to clamp mudguards of different specifications. The motor 31 is started, and the motor 31 drives the lead screw 32 to rotate. The lead screw 32 drives the mounting plate 33 to move along the width direction of the machine tool 1. At the same time as the lead screw 32 rotates, the transmission rod 351 rotates. The rotation of the transmission rod 351 drives the threaded rod 34 to rotate. The fixed rod on the threaded rod 34 moves along the width direction of the machine tool 1, so that the suction pipe 21 and the blowing pipe 22 move synchronously with the cutting head 12. At the same time as the transmission rod 351 rotates, the adjusting rod 641 rotates. The rotation of the adjusting rod 641 drives the first clamping member to move along the height direction, so that the cutting head 12 is perpendicular to the cutting surface of the arc-shaped mudguard. The mounting plate 33 moves along the width direction of the machine tool 1. When moving vertically, the lifting frame 41 moves, which in turn moves the suction pipe 21 and the blowing pipe 22 vertically. The stepper motor 51 rotates, causing the rotating plate 54 to rotate, so that the suction pipe 21 is located on one side of the cut part and the blowing pipe 22 is located on the other side of the uncut part. The suction pipe 21 absorbs the toxic gases, fumes and impurities generated during cutting and cools the cut part of the mudguard. The suction pipe 21 draws hot air into the filter box 24, which filters and adsorbs the hot air and blows it through the blowing pipe 22 to the uncut part of the mudguard for preheating. This reduces the cooling time of the mudguard after cutting and reduces the harm to workers caused by the gases and fumes generated during mudguard cutting, thus improving the cutting quality of the mudguard.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laser cutting device for automobile mudguards, comprising a machine tool (1), wherein a crossbeam (11) is slidably disposed on the machine tool (1), and a cutting head (12) is slidably and vertically disposed on the crossbeam (11), characterized in that: The machine tool (1) is provided with a clamping component for fixing the mudguard plate. The machine tool (1) is provided with a suction pipe (21). The bottom of the machine tool (1) is provided with a fan (23). The side wall of the crossbeam (11) is rotatably provided with a threaded rod (34). A fixing plate (36) is threadedly connected to the threaded rod (34). The suction pipe (21) is provided on the fixing plate (36). The machine tool (1) is provided with a synchronizing component for driving the suction pipe (21) to move. The machine tool (1) is provided with a lifting component for raising and lowering the suction pipe (21).

2. The laser cutting device for automobile mudguards according to claim 1, characterized in that: A motor (31) is installed on the crossbeam (11), a lead screw (32) is rotatably installed on the crossbeam (11), a mounting plate (33) is raised and lowered on the lead screw (32), a cutting head (12) is installed on the mounting plate (33), the synchronizing element is a transmission rod (351) rotatably installed on the side wall of the crossbeam (11), a first bevel gear (352) is fixedly connected to both ends of the transmission rod (351), a second bevel gear (353) is fixedly connected to the output end of the motor (31), a third bevel gear (354) is fixedly connected to the threaded rod (34), and the two first bevel gears (352) mesh with the second bevel gear (353) and the third bevel gear (354) respectively.

3. The laser cutting device for automobile mudguards according to claim 2, characterized in that: The lifting component includes a lifting frame (41) that is lifted and mounted on the crossbeam (11). The lifting frame (41) is movably fitted with the mounting plate (33). The lifting frame (41) passes through the mounting plate (33). A lifting plate (42) is slidably mounted on the side of the lifting frame (41) away from the mounting plate (33). A telescopic rod (43) is mounted on the fixed plate (36). The lifting plate (42) is fixed to the telescopic end of the telescopic rod (43). A preheating component for preheating the mudguard is mounted on the lifting plate (42).

4. The laser cutting device for automobile mudguards according to claim 3, characterized in that: The preheating assembly includes a blower pipe (22) rotatably mounted on the lifting plate (42), the blower pipe (22) being connected to the fan (23), a rotating plate (54) rotatably mounted on the lifting plate (42), the blower pipe (22) and the suction pipe (21) being respectively mounted at both ends of the rotating plate (54), and the preheating assembly also includes a driving component for driving the rotating plate (54) to rotate.

5. The laser cutting device for automobile mudguards according to claim 4, characterized in that: The driving component includes a stepper motor (51) mounted on the lifting plate (42), a rotating shaft (53) rotatably mounted on the lifting plate (42), the rotating shaft (53) being fixedly connected to the output end of the stepper motor (51), an infrared sensor (52) mounted on the lifting plate (42), and a controller mounted on the machine tool (1), the controller being electrically connected to the stepper motor (51).

6. The laser cutting device for automobile mudguards according to claim 2, characterized in that: The clamping components are a first clamping block (62) and a second clamping block (63) rotatably mounted on the machine tool (1). A clamping rod (61) is fixedly connected to the crossbeam (11). The second clamping block (63) is slidably mounted on the clamping rod (61). A plurality of positioning holes (611) are provided on the clamping rod (61). A positioning rod (612) is provided on the crossbeam (11). The positioning rod (612) is inserted into and adapted to the positioning hole (611). A transmission component for rotating the clamping rod (61) is provided on the crossbeam (11).

7. The laser cutting device for automobile mudguards according to claim 6, characterized in that: The transmission component is an adjusting rod (641) rotatably mounted on the side wall of the crossbeam (11). A fourth bevel gear (642) is rotatably mounted on the adjusting rod (641). A fifth bevel gear (643) is coaxially fixed to the transmission rod (351). The fourth bevel gear (642) meshes with the fifth bevel gear (643). A gear (644) is fixed to the end of the adjusting rod (641) away from the fourth bevel gear (642). A rack (645) meshing with the gear (644) is slidably mounted on the crossbeam (11). The first clamping block (62) is mounted on the rack (645).

8. The laser cutting device for automobile mudguards according to claim 1, characterized in that: The suction pipe (21) and the fan (23) are connected by a filter box (24) for filtering and adsorbing smoke, toxic gases and impurities.

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