Aluminum profile laser processing equipment applied to rail transit complex cavity

Abstract

The present application relates to the technical field of laser processing, and particularly relates to a laser processing equipment for aluminum profile of rail transit complex cavity, which comprises a main frame, rotating assemblies and docking devices are arranged at both ends of the inside of the main frame, a laser cutting assembly is arranged at the position close to the rotating assembly on the top of the inside of the main frame, a jacking platform is arranged between the docking device and the rotating assembly in the inside of the main frame, a pressing assembly is arranged above the jacking platform, the docking device comprises a pushing piece fixedly connected with the main frame, and a cleaning mechanism is arranged at the end of the pushing piece. The cleaning mechanism drives the reciprocating motion of the cutter by means of the docking wheel and the gear set, and simultaneously deburrs and removes waste residues. The elastic piece and the swing arm dynamically adjust to ensure that the docking wheel closely contacts the cavity. The wedge-shaped guide surface drives the cutter to be uniformly pressed, and the self-adaptive design is suitable for different inner diameters and complex structures, so that the efficiency and the qualified rate are improved.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, and in particular to a laser processing device for aluminum profiles used in complex cavities of rail transit systems. Background Technology

[0002] To meet the lightweight requirements of rail transit, irregular cavity aluminum profiles are widely used due to their structural strength and weight reduction advantages. This type of profile is straight and short in length, with a square cross-section. One side has a groove to accommodate assembly requirements, and reinforcing ribs are added to the groove to improve structural stability. However, this also makes the cross-sectional shape of the cavity complex, which brings challenges to subsequent processing.

[0003] During the production process, laser drilling is required on the non-groove surfaces of the profiles to enable functions such as pipeline laying and connection. However, due to the complex cavity structure and the characteristics of laser processing, burrs are easily formed inside the cavity during drilling, affecting the assembly accuracy and safety of the profiles. Furthermore, the waste generated during drilling is prone to splashing onto other inner walls of the cavity, making subsequent cleaning difficult.

[0004] These problems not only increase cleaning time in the production process and reduce production efficiency, but may also affect the subsequent assembly quality of profiles due to waste, burrs, and residual waste residue, and even pose a potential risk to the operational reliability of rail transit equipment. Summary of the Invention

[0005] This invention provides a laser processing equipment for aluminum profiles applied to complex cavities in rail transit systems, in order to solve the problems mentioned in the background art, such as the difficulty in removing burrs due to the complex cavity structure, which affects assembly accuracy, and the increased cleaning difficulty caused by waste splattering onto the inner wall.

[0006] To solve the above-mentioned technical problems, the present invention provides a laser processing equipment for aluminum profiles applied to complex cavities in rail transit, including a main frame; a rotating component and a docking device are respectively arranged at both ends inside the main frame; a laser cutting component is arranged at the top of the inner side of the main frame near the rotating component; a lifting platform is arranged inside the main frame between the docking device and the rotating component; a pressing component is arranged above the lifting platform; the docking device includes a pushing component fixedly connected to the main frame; a cleaning mechanism is arranged at the end of the pushing component; the cleaning mechanism includes a housing rotatably connected to the pushing component through a hinge seat; a docking rack is slidably connected inside the housing; a docking groove is opened at the top of the docking rack; a fixing frame is arranged inside the housing on both sides of the docking rack; a swing arm is hinged on the fixing frame; a drive groove is opened at one end of the swing arm inside the housing; the other end of the docking rack extends to the outside of the housing and is fixedly connected to a docking head; and an expandable cutter is provided on the docking head.

[0007] The present invention is further configured such that a limiting bracket is slidably connected inside the docking groove, the two ends of the limiting bracket are fixedly connected to the housing, and a docking slider is slidably connected inside the docking groove near the docking joint.

[0008] The present invention is further configured such that a movable groove is provided on the side of the connector away from the mating rack, a slider is slidably connected inside the movable groove, and the cutter is disposed at the end of the slider located outside the movable groove.

[0009] The invention is further configured such that a mating surface is provided at one end of the slider located inside the movable groove, and an elastic element three is provided between the slider and the movable groove. A mating top block is slidably installed inside the mating joint. A wedge-shaped guide surface is provided on the outer wall of the mating top block, which is opposite to the mating surface. One end of the mating top block penetrates the shell and extends into the mating groove. An elastic element one is provided between the mating top block and the mating slider. Connecting bolts are provided at the top and bottom of the mating slider. The connecting bolts extend into the drive groove and are slidably connected thereto.

[0010] The present invention is further configured such that a swing arm is hinged at both the top and bottom of the fixing frame, the end of the swing arm away from the docking rack extends to the outside of the housing, and the end of the swing arm located outside the housing is rotatably connected to a rotating shaft.

[0011] The invention is further configured such that a docking wheel is fixedly connected to the outer circumferential wall of the rotating shaft between the swing arms, and an elastic element is provided between the rotating shaft and the limiting bracket.

[0012] The present invention is further configured such that a drive gear is provided on the outer wall of the docking wheel, and a gear set is provided inside the fixing frame at the position corresponding to the drive gear, and a half tooth is provided on the top of the gear set to mesh with the docking rack.

[0013] The beneficial effects of the laser processing equipment for aluminum profiles applied to complex cavities in rail transit systems according to the present invention are as follows:

[0014] 1. After the aluminum profile is drilled and cut, the cleaning mechanism can be pushed into the cavity by the push assembly without additional transportation, eliminating redundant steps in traditional processing. Simultaneously, the cleaning mechanism rotates due to friction between the docking wheel and the inner wall of the cavity. Through the power transmission of the drive gears and gear sets, two sets of differentially structured gear sets drive the alternating half-tooth meshing of the docking rack, ultimately achieving rapid reciprocating motion of the cutter. This allows the cutter to simultaneously deburr and remove waste as it moves with the cleaning mechanism. Compared to traditional step-by-step operations, the post-processing time for a single aluminum profile is shortened.

[0015] Second, during the cleaning process, the elastic component four, through the dynamic adjustment of the continuously lifting swing arm, ensures that the docking wheel remains tightly fitted against the inner wall of the cavity, guaranteeing stable meshing of the drive gear and gear set and preventing uneven cleaning caused by power interruption. Simultaneously, the wedge-shaped guide surface of the docking block precisely engages with the slider, converting linear thrust into lateral spreading force, driving the cutter to evenly press against the inner wall of the cavity. Combined with the high-frequency, small-amplitude reciprocating motion of the cutter, it thoroughly cuts off the root of burrs without leaving any untreated areas. This process ensures the dimensional accuracy of the aluminum profile assembly while effectively protecting the integrity of the surface oxide layer, preventing a decline in corrosion resistance, reducing rework and repair costs, and significantly improving the product qualification rate.

[0016] Third, when the cleaning mechanism extends into the cavity, the docking wheel, squeezed by the inner wall of the cavity, drives the swing arm to retract around the hinge point of the fixed frame. Through the sliding cooperation between the drive groove and the connecting bolt, the docking slider is moved, thereby triggering the automatic unfolding of the cutter. The entire process requires no manual adjustment of parameters, and the unfolding range of the cutter can be adaptively adjusted according to the actual inner diameter of the cavity. At the same time, the reverse elastic force of the elastic element four can compensate for the gap caused by local protrusions or diameter changes in the cavity, ensuring that the docking wheel and the cutter always maintain effective contact. Compared with traditional fixed-size cleaning tools, it can be adapted to complex cavity aluminum profiles with various inner diameters, reinforcing ribs, or local irregular structures, without the need for frequent replacement of special components. Attached Figure Description

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the following description is provided in conjunction with the accompanying drawings.

[0018] Please provide a detailed explanation.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Figure 1 This is a three-dimensional structural diagram of an aluminum profile laser processing equipment applied to complex cavities in rail transit, according to the present invention.

[0021] Figure 2This is a front view of a laser processing equipment for aluminum profiles applied to complex cavities in rail transit systems, according to the present invention.

[0022] Figure 3 This is a diagram showing the form switching of a laser processing equipment for aluminum profiles applied to complex cavities in rail transit, according to the present invention.

[0023] Figure 4 This is an enlarged view of a docking device for a laser processing equipment for aluminum profiles used in complex cavities of rail transit, according to the present invention.

[0024] Figure 5 This is an enlarged view of the cleaning mechanism of an aluminum profile laser processing equipment applied to complex cavities in rail transit, according to the present invention.

[0025] Figure 6 This is a cross-sectional view of a cleaning mechanism for a laser processing equipment for aluminum profiles applied to complex cavities in rail transit, according to the present invention.

[0026] Figure 7 This is an exploded view of the cleaning mechanism of a laser processing equipment for aluminum profiles applied to complex cavities in rail transit, according to the present invention.

[0027] The diagram is marked as follows:

[0028] 1. Main frame; 2. Rotating assembly; 3. Laser cutting assembly; 4. Lifting platform; 5. Pressing assembly; 6. Docking device; 61. Pushing component; 62. Cleaning mechanism; 622. Housing; 6221. Hinge seat;

[0029] 623. Dating rack; 6231. Dating groove; 624. Dating joint; 6241. Movable groove; 625. Limiting bracket; 626. Dating slider; 6261. Connecting bolt; 6262. Elastic element one; 627. Slider; 6271. Dating surface; 6272. Cutter; 6273. Elastic element three; 6274. Dating top block; 6275. Wedge-shaped guide surface; 628. Fixing frame; 6281. Swing arm; 6282. Drive groove; 6283. Rotating shaft; 6284. Elastic element four; 6285. Dating wheel; 6286. Drive gear; 6287. Gear set; 6288. Half tooth. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. 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 a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a transmission connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two elements or the interaction between two elements.

[0032] Please see Figures 1-7 A laser processing equipment for aluminum profiles applied to complex cavities in rail transit includes a main frame 1; a rotating component 2 and a docking device 6 are respectively arranged at both ends inside the main frame 1; a laser cutting component 3 is arranged at the top inside the main frame 1 near the rotating component 2; a lifting platform 4 is arranged inside the main frame 1 between the docking device 6 and the rotating component 2; and a pressing component 5 is arranged above the lifting platform 4.

[0033] The docking device 6 includes a pusher 61 fixedly connected to the main frame 1. A cleaning mechanism 62 is provided at the end of the pusher 61. The cleaning mechanism 62 includes a housing 622 rotatably connected to the pusher 61 via a hinge seat 6221. A docking rack 623 is slidably connected inside the housing 622. A docking groove 6231 is provided on the top of the docking rack 623. Fixing frames 628 are provided on both sides of the docking rack 623 inside the housing 622. A swing arm 6281 is hinged on the fixing frame 628. A drive groove 6282 is provided at one end of the swing arm 6281 inside the housing 622. The other end of the docking rack 623 extends to the outside of the housing 622 and is fixedly connected to a connector 624. An expandable cutter 6272 is provided on the connector 624.

[0034] By adopting the above technical solution, the swing arm 6281, through the cooperation of the drive groove 6282 and the connecting bolt 6261, converts the rotational motion into the linear reciprocating motion of the mating rack 623. The mating joint 624, in cooperation with the wedge-shaped guide surface 6275, pushes the cutter 6272 radially outward, ensuring a constant contact pressure between the cutter 6272 and the inner wall of the profile. The mating wheel 6285 adapts to different cavity diameters under the action of the elastic element 6284. The dual-mode gear set 6287 enables bidirectional movement of the mating rack 623.

[0035] A movable groove 6241 is provided on the side of the connector 624 away from the mating rack 623. A slider 627 is slidably connected inside the movable groove 6241. A cutter 6272 is located at the end of the slider 627 outside the movable groove 6241. A mating surface 6271 is provided at the end of the slider 627 inside the movable groove 6241, and an elastic element 6273 is provided between the slider 627 and the movable groove 6241. A mating top block 6274 is slidably installed inside the connector 624. A wedge-shaped guide surface 6275 is provided on the outer wall of the mating top block 6274, which is opposite to the mating surface 6271. One end of the mating top block 6274 penetrates the housing 622 and extends into the mating groove 6231. An elastic element 6262 is provided between the mating top block 6274 and the mating slider 626. Connecting bolts 6261 are provided at the top and bottom of the mating slider 626. The connecting bolts 6261 extend into the drive groove 6282 and are slidably connected thereto. A limiting bracket 625 is slidably connected inside the docking groove 6231. The two ends of the limiting bracket 625 are fixedly connected to the housing 622. A docking slider 626 is slidably connected inside the docking groove 6231 near the docking joint 624.

[0036] By adopting the above technical solution, the movable groove 6241 of the connector 624 provides power to the unfolding of the cutter 6272 by pushing the slider 627. The wedge-shaped guide surface 6275 converts the axial thrust of the docking top block 6274 into the radial unfolding force of the slider 627, so that the cutter 6272 maintains a constant contact pressure with the inner wall of the profile. The elastic element 6262 realizes adaptive force adjustment when the docking slider 626 moves. The docking rack 623 is guided by the limiting bracket 625.

[0037] The top and bottom of the fixed frame 628 are hinged with swing arms 6281. The end of the swing arm 6281 away from the mating rack 623 extends to the outside of the housing 622. The end of the swing arm 6281 located outside the housing 622 is rotatably connected to a rotating shaft 6283. A mating wheel 6285 is fixedly connected to the outer circumference of the rotating shaft 6283 between the swing arms 6281. An elastic element 6284 is provided between the rotating shaft 6283 and the limiting bracket 625.

[0038] By adopting the above technical solution, the swing arm 6281 forms a four-bar linkage with the fixed frame 628 through the hinge point. The rotating shaft 6283 converts the rolling friction of the docking wheel 6285 into rotational power, which drives the half tooth 6288 through the gear set 6287 to realize the reciprocating motion of the docking rack 623.

[0039] A drive gear 6286 is provided on the outer wall of the docking wheel 6285, and a gear set 6287 is provided inside the fixed frame 628 at the position corresponding to the drive gear 6286. The top of the gear set 6287 is provided with a half tooth 6288 that meshes with the docking rack 623.

[0040] By adopting the above technical solution, the drive gear 6286 on the outer wall of the docking wheel 6285 and the gear set 6287 form an efficient transmission chain. The special tooth profile design of the half tooth 6288 ensures smooth meshing with the docking rack 623. The gear set 6287 on both sides adopts an asymmetrical structure to achieve the opposite rotation of the half tooth 6288.

[0041] Working principle and usage process of this invention:

[0042] Under normal conditions, the rebound force of elastic element 6273 keeps the slider 627 and the cutter 6272 in a closed state, preventing damage to the cutter 6272 when not in operation. At the same time, elastic element 6284 supports the swing arm 6281 through lifting force, keeping the swing arm 6281 in an extended state, which in turn causes the docking wheel 6285 on the rotating shaft 6283 to extend most of its length outside the housing 622, preparing it for subsequent insertion into the aluminum profile cavity.

[0043] In operation, the aluminum profile first passes through the rotating assembly 2, and then rotates and moves under the laser cutting assembly 3. The laser cutting assembly 3 performs the drilling operation on the aluminum profile. The aluminum profile moves forward while completing the drilling, and then gradually moves above the lifting platform 4. When the drilling length of the aluminum profile reaches the preset value and needs to be cut, the end of the aluminum profile is close to the cleaning mechanism 62 in the docking device 6. At this time, the laser cutting assembly 3 starts the cutting program. When the aluminum profile is about to be cut, the lifting platform 4 rises quickly to support the aluminum profile, and at the same time, the pressing assembly 5 falls synchronously, forming a stable clamp with the lifting platform 4 to ensure that the aluminum profile does not shift during the subsequent cleaning process and to ensure cleaning accuracy.

[0044] After the aluminum profile is cut, the pusher 61 first slowly pushes the cleaning mechanism 62, causing the cleaning mechanism 62 to gradually extend into the cavity of the aluminum profile. Since the docking wheel 6285 is in the extended state, when it contacts the inner wall of the aluminum profile cavity, it is subjected to the squeezing force of the inner wall and forced to displace inwards towards the housing 622. During the inward displacement of the docking wheel 6285, it applies a thrust to the connected swing arms 6281, causing all four swing arms 6281 to retract and swing inwards towards the housing 622 around the hinge point with the fixed frame 628. During this process, the elastic element 6284 generates a reverse elastic force that constantly pushes against the swing arms 6281, ensuring that the docking wheel 6285 fits tightly against the inner wall of the aluminum profile cavity. This prevents subsequent power transmission failure due to insufficient fit and ensures that the drive gear 6286 and gear set 6287 maintain a stable meshing state, guaranteeing power transmission.

[0045] When the swing arm 6281 swings, its end inside the housing 622 generates a horizontal thrust on the connecting bolt 6261 via the drive groove 6282, converting the rotational motion of the swing arm 6281 into the linear motion of the connecting bolt 6261. This causes the docking slider 626 to move along the docking groove 6231 towards the mating joint 624. Simultaneously, the docking slider 626 moves, pushing the docking top block 6274 via the elastic element 6262, causing the docking top block 6274 to displace along the sliding path inside the mating joint 624. During the displacement of the top block 6274, the wedge-shaped guide surface 6275 on its outer wall will contact and squeeze the mating surface 6271 of the slider 627. Through the guiding effect of the wedge structure, the linear thrust of the top block 6274 is converted into the lateral unfolding force of the slider 627, causing the slider 627 to move along the movable groove 6241 away from the center of the joint 624. Finally, the cutter 6272 is tightly fitted with the inner wall of the aluminum profile cavity, ensuring no missed areas are scraped during subsequent deburring.

[0046] After the cutter 6272 is ready to be applied, the pusher 61 switches to rapid push mode, driving the cleaning mechanism 62 to move rapidly within the aluminum profile cavity. During this process, the docking wheel 6285, due to its close contact with the inner wall of the cavity and its movement with the cleaning mechanism 62, generates high-speed rotational motion. Simultaneously, the rotation of the docking wheel 6285 drives the drive gear 6286 to rotate, which in turn transmits the rotational power to the corresponding gear set 6287. Because the gear sets 6287 on both sides of the fixing bracket 628 have different configurations—one side has a single gear structure, and the other side has a double gear set 6287 structure—this structural difference causes the two gear sets 6287 to rotate in different directions. One gear set 6287 drives the half-tooth 6288 to rotate clockwise, while the other gear set 6287 drives the half-tooth 6288 to rotate counterclockwise. During rotation, the two half-teeth 6288 alternately mesh with the mating rack 623. When the clockwise rotating half-teeth 6288 mesh with the mating rack 623, they drive the mating rack 623 to move in one direction. When the counterclockwise rotating half-teeth 6288 mesh with the mating rack 623, they drive the mating rack 623 to move in the opposite direction, ultimately enabling the mating rack 623 to achieve rapid reciprocating motion. During the reciprocating motion of the mating rack 623, the cutting blade 6272 is driven to reciprocate synchronously through the end connector 624. With the cutting blade 6272 in close contact with the inner wall of the cavity, it can thoroughly cut off the root of the burr through rapid reciprocating cutting, and also push the waste residue on the inner wall of the cavity towards the opening end of the cavity through reciprocating scraping, thus achieving simultaneous completion of deburring and waste removal.

[0047] In summary, compared with the prior art, the embodiments of the present invention have the following advantages:

[0048] Advantage 1: The main frame 1 integrates the rotating assembly 2, laser cutting assembly 3, and docking device 6, realizing the integration of cutting and cleaning processes. The rotating assembly 2 drives the aluminum profile to move. After cutting, the pushing component 61 of the docking device 6 directly pushes the cleaning mechanism 62 into the cavity. Through the linkage of the docking wheel 6285, drive gear 6286, gear set 6287, and docking rack 623, the cutter 6272 reciprocates synchronously during movement, completing deburring and waste removal in one go.

[0049] Advantage 2: The cleaning mechanism 62, under pressure from the docking wheel 6285, drives the swing arm 6281 to retract, which in turn pushes the docking slider 626 via the drive groove 6282. The cutter 6272 is then deployed using the wedge-shaped guide surface 6275 of the docking top block 6274. The elastic element 6284 dynamically compensates for the cavity's diameter variation gap, ensuring that the cutter 6272 fits snugly against the inner wall, adapting to complex cavities.

[0050] Advantage 3: The reciprocating motion of the cutter 6272 is driven by the frictional rotation of the mating wheel 6285, achieved through the alternating meshing of the differentiated gear set 6287 (single / double gear configuration) and half-tooth 6288, eliminating the need for an additional motor. The elastic element 6273 keeps the cutter 6272 closed to prevent collisions when not in operation. The elastic element 6262 buffers the impact force when the cutter 6272 unfolds. High-frequency, micro-amplitude reciprocating cutting avoids hard scratches and protects the oxide layer.

[0051] Advantage 4: The lifting platform 4 and the pressing component 5 work together to fix the aluminum profile; the elastic element 6284 maintains close contact between the docking wheel 6285 and the inner wall, ensuring stable meshing of the drive gear 6286 and the gear set 6287. The cutter 6272 is evenly spread through the wedge-shaped guide surface 6275, and the reciprocating motion strictly controls the height of residual burrs.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser processing equipment for aluminum profiles applied to complex cavities in rail transit, characterized in that: Including the mainframe (1); The main frame (1) has a rotating component (2) and a docking device (6) respectively at both ends inside. The main frame (1) has a laser cutting component (3) located at the top inside near the rotating component (2). The main frame (1) has a lifting platform (4) located between the docking device (6) and the rotating component (2) inside. The lifting platform (4) has a pressing component (5) above it. The docking device (6) includes a pusher (61) fixedly connected to the main frame (1). A cleaning mechanism (62) is provided at the end of the pusher (61). The cleaning mechanism (62) includes a housing (622) rotatably connected to the pusher (61) via a hinge seat (6221). A docking rack (623) is slidably connected inside the housing (622). A docking groove (6231) is provided at the top of the docking rack (623). A fixing frame (628) is provided on both sides of the docking rack (623) inside the housing (622). A swing arm (6281) is hinged on the fixing frame (628). A drive groove (6282) is provided at one end of the swing arm (6281) inside the housing (622). The other end of the docking rack (623) extends to the outside of the housing (622) and is fixedly connected to a connector (624). An expandable cutter (6272) is provided on the connector (624). The mating joint (624) has a movable groove (6241) on the side away from the mating rack (623). A slider (627) is slidably connected inside the movable groove (6241). The cutter (6272) is located at the end of the slider (627) outside the movable groove (6241). The top and bottom of the fixing frame (628) are both hinged with swing arms (6281). The end of the swing arm (6281) away from the mating rack (623) extends to the outside of the housing (622). The end of the swing arm (6281) outside the housing (622) is rotatably connected to a rotating shaft (6283). A mating wheel is fixedly connected to the outer circumference of the rotating shaft (6283) between the swing arms (6281). 6285), an elastic element (6284) is provided between the rotating shaft (6283) and the limiting bracket (625), a driving gear (6286) is provided on the outer wall of the docking wheel (6285), a gear set (6287) is provided inside the fixed frame (628) corresponding to the position of the driving gear (6286), a half tooth (6288) is provided on the top of the gear set (6287) and meshes with the docking rack (623), a limiting bracket (625) is slidably connected inside the docking groove (6231), the two ends of the limiting bracket (625) are fixedly connected to the housing (622), and a docking slider (626) is slidably connected inside the docking groove (6231) near the docking joint (624).

2. The laser processing equipment for aluminum profiles applied to complex cavities in rail transit according to claim 1, characterized in that: The slider (627) has a mating surface (6271) at one end inside the movable groove (6241), and an elastic element (6273) is provided between the slider (627) and the movable groove (6241). A mating top block (6274) is slidably installed inside the mating joint (624). A wedge-shaped guide surface (6275) is provided on the outer wall of the mating top block (6274) and is opposite to the mating surface (6271). One end of the mating top block (6274) penetrates the shell (622) and extends into the mating slide groove (6231). An elastic element (6262) is provided between the mating top block (6274) and the mating slider (626). A connecting bolt (6261) is provided at the top and bottom of the mating slider (626). The connecting bolt (6261) extends into the drive groove (6282) and is slidably connected to it.

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