Laser cutting machine for steel structure plate machining

Abstract

The invention relates to the technical field of metal cutting, in particular to a laser cutting machine for steel structure plate machining, which comprises a machine tool and a material carrying frame fixedly mounted on the machine tool, a laser cutting head matched with the material carrying frame is further arranged on the machine tool, and an upper alignment plate capable of moving up and down is slidably mounted above the material carrying frame. Through synchronous approaching of the upper alignment plate and the lower alignment plate and self-adaptive attaching of the extrusion rods, the special-shaped plate is stably clamped from the upper side and the lower side, vibration and displacement in the cutting process are avoided, it is ensured that the cutting path is accurate, the section perpendicularity and the size precision are improved, and meanwhile the adjusting time of the clamp is shortened; the contact type heat dissipation pipe cools a cutting area during pressing, heat is rapidly taken away, thermal deformation and heat affected zones of the plate are remarkably reduced, the notch quality is improved, pressing and cooling can move along with the laser cutting head, dynamic pressing, continuous cutting and cooling of any complex steel structure plate are achieved, and the cutting efficiency is improved. And the cutting speed can be increased while the quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of metal cutting technology, and in particular to a laser cutting machine for processing steel structure plates. Background Technology

[0002] Steel structure panels (such as) Figure 9 (As shown) generally refers to flat steel materials used in construction, bridges, ships, machinery manufacturing and other fields. The materials are mostly carbon steel, high-strength steel or stainless steel. Common types include flat plates, ribbed plates, corrugated plates and components with curved or irregular cross-sections formed by bending and stamping. In order to ensure that the steel structure plates meet the required dimensions of various fields, laser cutting machines are used to cut the steel structure plates to ensure that the cut steel structure plates are dimensionally accurate, with smooth cuts and small heat-affected zones, and to reduce subsequent grinding processes.

[0003] Currently, laser cutting machines have the following problems when processing steel structure plates: Existing laser cutting machine fixtures are difficult to adapt to curved and irregularly shaped steel structure plates, resulting in insufficient clamping force. This causes the plate to vibrate or shift during laser cutting, affecting cutting accuracy and cross-sectional quality. At the same time, existing fixtures cannot move synchronously with the laser cutting head, thus failing to meet the continuous cutting requirements of complex contours. Furthermore, the heat generated by laser cutting tends to accumulate at the cutting point, and traditional external air blowing or overall water cooling has low heat dissipation efficiency, which can lead to local thermal deformation of the plate. Summary of the Invention

[0004] In view of the problems of the above or existing technologies, such as the difficulty of the clamps adapting to curved surfaces and the accumulation of heat when laser cutting machines cut steel structure plates, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides a laser cutting machine for processing steel structure plates, which is achieved by the following specific technical means: A laser cutting machine for processing steel structure plates includes a machine tool and a material carrier fixedly installed thereon. The machine tool is also equipped with a laser cutting head that cooperates with the material carrier. An upper alignment plate that moves up and down is slidably installed above the material carrier. A connecting component for connecting the laser cutting head is provided on the upper alignment plate. A lower alignment plate that moves up and down is slidably installed below the material carrier. A C-shaped connecting plate is provided between the lower alignment plate and the upper alignment plate. An upper extrusion rod that moves up and down is slidably installed through the upper alignment plate in a linear array. A lower extrusion rod that corresponds one-to-one with the upper extrusion rod and moves up and down is slidably installed through the lower alignment plate. A transmission component is provided on the C-shaped connecting plate for synchronously bringing the upper alignment plate and the lower alignment plate closer together. The upper and lower alignment plates move back and forth following the laser cutting head. The laser cutting head approaches the irregular steel structure plate, and multiple upper and lower extrusion rods simultaneously perform adaptive fitting and extrusion on the upper and lower end faces of the irregular steel structure plate. Heat dissipation pipes are provided on the sides of the upper and lower extrusion rods that are close to each other. When the two extrusion rods extrude the irregular steel structure plate, the heat dissipation pipes come into contact with the surface of the irregular steel structure plate.

[0006] Preferably, the upper end face of the material carrier is fixedly installed with symmetrical upper slide rails, an upper slider is slidably installed in the upper slide rails, an upper positioning rod is fixedly installed on the upper end face of the upper slider, an upper alignment plate is slidably installed through the upper positioning rods on both sides, and a spring rod is fixedly installed between the upper alignment plate and the upper slider.

[0007] Preferably, the connecting assembly includes a first slide rail fixedly installed on the rear side of the upper alignment plate, and a first slider fixedly connected to the laser cutting head is slidably installed in the first slide rail.

[0008] Preferably, the lower end face of the material carrier is fixedly installed with symmetrical sliding tracks, a lower slider is slidably installed in the sliding tracks, a lower positioning rod is fixedly installed on the lower end face of the lower slider, a lower alignment plate is slidably installed through the lower positioning rods on both sides, a spring is fixedly installed between the lower positioning rod and the lower alignment plate, and a C-shaped connecting plate is fixedly installed on the upper slider and the corresponding lower slider.

[0009] Preferably, the upper extrusion rod consists of an upper extrusion tube and a lower contact block. The extrusion tube is slidably installed through the upper alignment plate, the extrusion tube is fixedly connected to the contact block, and a spring is provided between the extrusion tube and the upper alignment plate.

[0010] Preferably, the lower end of the lower extrusion rod is slidably mounted through the lower alignment plate, a convex ring is fixedly mounted on the outer ring wall of the lower extrusion rod, a spring sleeved on the corresponding lower extrusion rod is fixedly mounted between the convex ring and the lower alignment plate, and a contact block is also fixedly mounted on the upper end of the lower extrusion rod.

[0011] Preferably, a heat dissipation pipe is fixedly installed on the side wall of the lower extrusion rod and the upper extrusion rod that are close to each other, and ball bearings are rotatably installed at the four corners of the side wall of the contact block where the heat dissipation pipe is installed, and the contact block is made of thermally conductive material.

[0012] Preferably, the transmission assembly includes a gear rotatably mounted on a C-shaped connecting plate via a set pin, a first rack fixedly mounted on the upper alignment plate, and a second rack fixedly mounted on the lower alignment plate. The gear is located between the first rack and the second rack and meshes with both of them.

[0013] Preferably, the upper alignment plate is provided with an upper heat dissipation assembly connected to the heat dissipation pipe of the upper extrusion rod. The upper heat dissipation assembly includes an inlet telescopic pipe and an outlet telescopic pipe fixedly installed inside the extrusion pipe. The inlet telescopic pipe and the outlet telescopic pipe are connected to the heat dissipation pipe of the corresponding upper extrusion rod. An upper connecting pipe is fixedly installed on the upper end of several inlet telescopic pipes, and another upper connecting pipe is fixedly installed on the upper end of several outlet telescopic pipes.

[0014] Preferably, a lower heat dissipation pipe is fixedly installed on the lower alignment plate, and the lower heat dissipation pipe is connected to the heat dissipation pipe of the lower extrusion rod through a lower connecting pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by the synchronous approach of the upper and lower alignment plates and the adaptive fitting of several extrusion rods, the irregular plate is firmly clamped from the upper and lower sides, avoiding vibration and displacement during the cutting process, ensuring the accuracy of the cutting path, improving the perpendicularity of the cross-section and dimensional accuracy, and reducing the adjustment time of the fixture. The contact heat dissipation pipe cools the cutting area during clamping, quickly removes heat, significantly reduces the thermal deformation and heat-affected zone of the plate, improves the cut quality, and the clamping and cooling can follow the movement of the laser cutting head to realize dynamic clamping, continuous cutting and cooling of any complex steel structure plate, which may increase the cutting speed while ensuring quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention during operation.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the alignment plate and the lower alignment plate of the present invention.

[0020] Figure 4 This is a partial three-dimensional structural diagram of the alignment plate and the material carrier of the present invention.

[0021] Figure 5 This is a bottom-view three-dimensional structural diagram of the upper and lower alignment plates of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the cooperation between the upper and lower extrusion rods of the present invention.

[0023] Figure 7 This is a partial three-dimensional structural diagram of the transmission component of the present invention.

[0024] Figure 8 for Figure 5 A magnified structural diagram of point A in the middle.

[0025] Figure 9 This is a three-dimensional structural diagram of a steel structure panel.

[0026] In the diagram: 1. Machine tool; 2. Material carrier; 3. Laser cutting head; 31. Connecting assembly; 311. First slide rail; 312. First slider; 4. Upper alignment plate; 401. Upper slide rail; 402. Upper slider; 403. Upper positioning rod; 404. Spring rod; 41. Upper extrusion rod; 411. Contact block; 412. Extrusion tube; 42. C-shaped connecting plate; 5. Lower alignment plate; 501. Lower slide rail; 502. Lower slider; 503. Lower positioning rod; 51. Lower extrusion rod; 511. Convex ring; 52. Transmission assembly; 521. First rack; 522. Second rack; 523. Gear; 53. Ball bearing; 6. Heat dissipation pipe; 61. Upper heat dissipation assembly; 611. Water inlet telescopic pipe; 612. Water outlet telescopic pipe; 613. Upper connecting pipe; 62. Lower heat dissipation connecting pipe; 621. Lower connecting pipe. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 9 A laser cutting machine for processing steel structure plates includes a machine tool 1 and a material carrier 2 fixedly installed thereon. The machine tool 1 is also provided with a laser cutting head 3 that cooperates with the material carrier 2. An upper alignment plate 4 that moves up and down is slidably installed above the material carrier 2. A connecting component 31 for connecting the laser cutting head 3 is provided on the upper alignment plate 4.

[0030] A lower alignment plate 5 that moves up and down is slidably installed below the material carrier 2. A C-shaped connecting plate 42 is provided between the lower alignment plate 5 and the upper alignment plate 4. An upper extrusion rod 41 that moves up and down is slidably installed through the upper alignment plate 4 in a linear array. A lower extrusion rod 51 that corresponds one-to-one with the upper extrusion rod 41 and moves up and down is slidably installed through the lower alignment plate 5. A transmission component 52 is provided on the C-shaped connecting plate 42 for synchronously bringing the upper alignment plate 4 and the lower alignment plate 5 closer together.

[0031] Please see Figure 3 , Figure 4 , Figure 5 and Figure 9 The upper alignment plate 4 and the lower alignment plate 5 move back and forth with the laser cutting head 3. The laser cutting head 3 approaches the irregular steel structure plate. Multiple upper extrusion rods 41 and lower extrusion rods 51 simultaneously perform adaptive fitting extrusion on the upper and lower end faces of the irregular steel structure plate. Heat dissipation pipes 6 are provided on the side of the upper extrusion rods 41 and the lower extrusion rods 51 that are close to each other. When the two extrude the irregular steel structure plate, the heat dissipation pipes 6 contact the surface of the irregular steel structure plate.

[0032] The material carrier 2 provides support for the steel structure plate to be processed. The laser cutting head 3 is mounted on the machine tool 1 through the guide rail and drive mechanism, so that it can move above the material carrier 2 to cut the plate. The C-shaped connecting plate 42 connects the upper alignment plate 4 and the lower alignment plate 5, so that the laser cutting head 3 can drive the two to follow synchronously when moving back and forth through the connecting component 31.

[0033] In actual operation, the upper alignment plate 4 and the lower alignment plate 5 move back and forth with the laser cutting head 3 through the connecting component 31. When the laser cutting head 3 moves above the irregular steel structure plate to be cut, the laser cutting head 3 descends and drives the upper alignment plate 4 and the lower alignment plate 5 to move synchronously closer to the irregular steel structure plate through the transmission component 52.

[0034] Since the upper extrusion rod 41 and the lower extrusion rod 51 are independently movable, when the laser cutting head 3 approaches the irregular steel structure plate, multiple upper extrusion rods 41 and lower extrusion rods 51 simultaneously apply synchronous pressing to the upper and lower end faces of the irregular steel structure plate, so that they can adjust their upper and lower positions according to the curved shape of the irregular steel structure plate, thereby achieving adaptive fitting of the upper and lower end faces of the plate and ensuring that the plate is effectively clamped.

[0035] The heat dissipation pipes 6 of the upper extrusion rod 41 and the lower extrusion rod 51 come into contact with the surface of the irregular steel structure plate when they extrude the irregular steel structure plate. When the coolant circulates in the heat dissipation pipes 6, it can conduct away the heat from the surface of the plate, thereby achieving localized and efficient heat dissipation.

[0036] By using the upper alignment plate 4 and lower alignment plate 5 that move synchronously with the laser cutting head 3, and by utilizing multiple upper extrusion rods 41 and lower extrusion rods 51 arranged in a linear array to adaptively fit and extrude the upper and lower end faces of the irregular steel structure plate, the problems of the fixture being unable to adapt to curved irregular plates, insufficient clamping force causing vibration and displacement, and being unable to move synchronously with the laser cutting head 3 are solved. This ensures cutting accuracy and continuous cutting requirements. At the same time, by setting heat dissipation pipes 6 on the extrusion rods and making them in direct contact with the plate surface, efficient local heat dissipation of the cutting area is achieved, reducing the risk of local thermal deformation of the plate.

[0037] Please see Figure 3 , Figure 4 , Figure 6 and Figure 7 The upper end face of the material carrier 2 is fixedly installed with symmetrical upper slide rails 401. The upper slide rail 401 is slidably installed inside the upper slide rail 401. The upper slide rail 402 is fixedly installed with an upper positioning rod 403 on the upper end face of the upper slide rail 402. The upper alignment plate 4 is slidably installed through the upper positioning rods 403 on both sides. A spring rod 404 is fixedly installed between the upper alignment plate 4 and the upper slide rail 402.

[0038] In actual operation, the upper slide rail 401 provides guidance for the horizontal movement of the upper alignment plate 4, ensuring that it is subjected to uniform force when moving with the laser cutting head 3. The upper positioning rod 403 provides support and guidance for the upper alignment plate 4 in the vertical direction, ensuring the parallelism of the upper alignment plate 4 when moving up and down. The spring rod 404 can absorb the impact force during the compression process, providing elastic buffer, and at the same time ensuring that the upper alignment plate 4 is reset.

[0039] Please see Figure 3 and Figure 4 The connecting component 31 includes a first slide rail 311 fixedly installed on the rear side of the upper alignment plate 4, and a first slider 312 fixedly connected to the laser cutting head 3 is slidably installed in the first slide rail 311.

[0040] Please see Figure 5 , Figure 6 and Figure 7 The lower end face of the material carrier 2 is fixedly installed with a left-right symmetrical sliding track 501. A lower slide block 502 is slidably installed in the sliding track 501. A lower positioning rod 503 is fixedly installed on the lower end face of the lower slide block 502. The lower alignment plate 5 is slidably installed on the lower positioning rods 503 on both sides. A spring is fixedly installed between the lower positioning rod 503 and the lower alignment plate 5. A C-shaped connecting plate 42 is fixedly installed on the upper slide block 402 and the corresponding lower slide block 502.

[0041] In actual operation, the cooperation between the first slide rail 311 and the first slider 312 enables the upper alignment plate 4 to move synchronously with the laser cutting head 3, ensuring a stable and reliable connection between the laser cutting head 3 and the upper alignment plate 4, avoiding shaking during synchronous movement, and further ensuring the positional accuracy of the laser cutting head 3 when cutting irregular steel structure plates.

[0042] The sliding track 501 provides guidance for the horizontal movement of the lower alignment plate 5. The cooperation between the lower positioning rod 503 and the spring enables the lower alignment plate 5 to achieve precise vertical movement, ensuring that the lower pressing rod 51 fits tightly and is stably clamped to the lower part of the plate.

[0043] The C-shaped connecting plate 42 enables the upper alignment plate 4 and the lower alignment plate 5 to move synchronously in the horizontal direction, allowing the entire clamping system to move synchronously with the laser cutting head 3, thereby meeting the continuous cutting requirements of complex contours and ensuring stable clamping of irregular steel structure plates throughout the cutting path.

[0044] Please see Figure 3 , Figure 4 , Figure 5 and Figure 6 The upper extrusion rod 41 is composed of an upper extrusion tube 412 and a lower contact block 411. The extrusion tube 412 is slidably installed on the upper alignment plate 4. The extrusion tube 412 is fixedly connected to the contact block 411. A spring is provided between the extrusion tube 412 and the upper alignment plate 4.

[0045] Please see Figure 3 , Figure 5 , Figure 6 and Figure 7 The lower end of the lower extrusion rod 51 is slidably installed on the lower alignment plate 5. A convex ring 511 is fixedly installed on the outer ring wall of the lower extrusion rod 51. A spring sleeved on the corresponding lower extrusion rod 51 is fixedly installed between the convex ring 511 and the lower alignment plate 5. A contact block 411 is also fixedly installed on the upper end of the lower extrusion rod 51.

[0046] Please see Figure 4 and Figure 6 A heat dissipation pipe 6 is fixedly installed on the side wall of the lower extrusion rod 51 and the upper extrusion rod 41, which are close to each other. Ball bearings 53 are rotatably installed at the four corners of the side wall of the contact block 411 where the heat dissipation pipe 6 is installed, and the contact block 411 is made of thermally conductive material.

[0047] Please see Figure 3 , Figure 5 , Figure 7 and Figure 8The transmission assembly 52 includes a gear 523 rotatably mounted on a C-shaped connecting plate 42 via a set pin. A first rack 521 is fixedly mounted on the upper alignment plate 4, and a second rack 522 is fixedly mounted on the lower alignment plate 5. The gear 523 is located between the first rack 521 and the second rack 522 and meshes with both of them.

[0048] In actual operation, when the laser cutting head 3 moves downward and approaches the irregular steel structure plate, the laser cutting head 3 will press down on the alignment plate 4. At this time, the first rack 521 drives the gear 523 to rotate, and the rotation of the gear 523 drives the second rack 522 to move upward, thereby causing the lower alignment plate 5 to move upward. This ensures that the upper alignment plate 4 and the lower alignment plate 5 always maintain precise synchronous reverse movement when approaching or moving away from the irregular steel structure plate.

[0049] When the laser cutting head 3 cuts the irregular steel structure plate, the laser cutting head 3 reaches the corresponding upper extrusion rod 41 and lower extrusion rod 51. At this time, the laser cutting head 3 will apply stable pressure to the upper alignment plate 4 at this position, thereby increasing the pressure of the upper extrusion rod 41 and lower extrusion rod 51 on the irregular steel structure plate relative to other positions, thereby further ensuring the stability of the cutting.

[0050] When the upper extrusion rod 41 contacts the irregular steel structure plate, the spring can make the contact block 411 fit tightly against the curved or irregular surface of the plate according to the local undulations of the plate surface. Meanwhile, the spring on the lower extrusion rod 51 ensures that the contact block 411 of the lower extrusion rod 51 always keeps in close contact with the lower end face of the plate, thereby improving the stability and reliability of clamping.

[0051] During the cutting process, multiple contact blocks 411 simultaneously adhere to the upper and lower surfaces of the irregular steel structure plate, enabling the heat-conducting material of the contact blocks 411 to efficiently conduct heat from the surface of the irregular steel structure plate to the interior of the contact blocks 411. Meanwhile, the heat dissipation pipe 6 can promptly conduct and dissipate heat from the contact blocks 411, thereby preventing heat from accumulating locally on the plate during laser cutting, significantly reducing the risk of thermal deformation of the plate, and ensuring cutting accuracy.

[0052] The ball bearing 53 reduces the frictional resistance between the contact block 411 and the surface of the irregular steel structure plate, so that the upper extrusion rod 41 and the lower extrusion rod 51 can slide more smoothly when following the laser cutting head 3 to move back and forth and perform adaptive fitting and extrusion. This improves the adaptability to the complex contours of the irregular plate and avoids plate displacement or cutting interruption caused by excessive friction, thereby ensuring the stability and efficiency of continuous cutting.

[0053] Please see Figure 3 and Figure 6The upper alignment plate 4 is provided with an upper heat dissipation assembly 61 connected to the heat dissipation pipe 6 of the upper extrusion rod 41. The upper heat dissipation assembly 61 includes an inlet telescopic pipe 611 and an outlet telescopic pipe 612 fixedly installed inside the extrusion pipe 412. The inlet telescopic pipe 611 and the outlet telescopic pipe 612 are connected to the heat dissipation pipe 6 of the corresponding upper extrusion rod 41. An upper connecting pipe 613 is fixedly installed on the upper end of several inlet telescopic pipes 611, and another upper connecting pipe 613 is fixedly installed on the upper end of several outlet telescopic pipes 612.

[0054] Please see Figure 5 A lower heat dissipation pipe 62 is fixedly installed on the lower alignment plate 5. The lower heat dissipation pipe 62 is connected to the heat dissipation pipe 6 of the lower extrusion rod 51 through a lower connecting pipe 621.

[0055] In actual operation, the inlet expansion pipe 611 and the outlet expansion pipe 612 are connected to the heat dissipation pipe 6, so that the coolant can flow directly and continuously through the heat dissipation pipe 6. Since both are expansion pipes, the upper extrusion rod 41 moves up and down when it adaptively fits and extrudes the irregular steel structure plate. The coolant supply and return pipelines can also remain continuous and sealed, avoiding the breakage, leakage or efficiency reduction caused by the movement of traditional fixed pipelines.

[0056] Several inlet expansion pipes 611 and outlet expansion pipes 612 converge to different connecting pipes 613 to achieve centralized management and distribution of coolant, simplify the overall pipeline layout, and ensure that during the laser cutting process, the heat dissipation pipes 6 can continuously and efficiently remove the heat from the cutting area of ​​the irregular steel structure plate, effectively suppressing the accumulation of local heat.

[0057] The lower heat dissipation pipe 62 and the heat dissipation pipe 6 of the lower extrusion rod 51 are connected by the lower connecting pipe 621, thus forming a coolant circulation system. This allows the coolant to flow steadily from the lower heat dissipation pipe 62 through the lower connecting pipe 621 into the heat dissipation pipe 6 of the lower extrusion rod 51. After absorbing the heat from the plate, the coolant returns to the lower heat dissipation pipe 62 through the lower connecting pipe 621, thereby effectively and promptly removing the heat.

[0058] This creates a two-way cooling cycle, further enhancing the overall heat dissipation capacity of irregularly shaped steel structure plates. Especially when the plate thickness is large or the cutting power is high, it can more comprehensively and evenly control the plate temperature, significantly improving cutting efficiency and product quality.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A laser cutting machine for processing steel structure plates, comprising a machine tool (1) and a material carrier (2) fixedly mounted thereon, wherein the machine tool (1) is further provided with a laser cutting head (3) that cooperates with the material carrier (2), characterized in that: The upper alignment plate (4) that moves up and down is slidably installed above the material rack (2), and the upper alignment plate (4) is provided with a connecting component (31) for connecting the laser cutting head (3); A lower alignment plate (5) that moves up and down is slidably installed below the material rack (2). A C-shaped connecting plate (42) is provided between the lower alignment plate (5) and the upper alignment plate (4). An upper extrusion rod (41) that moves up and down is slidably installed through the upper alignment plate (4) in a linear array. A lower extrusion rod (51) that corresponds one-to-one with the upper extrusion rod (41) and moves up and down is slidably installed through the lower alignment plate (5). A transmission component (52) is provided on the C-shaped connecting plate (42) for synchronously bringing the upper alignment plate (4) and the lower alignment plate (5) closer together. The upper alignment plate (4) and the lower alignment plate (5) move back and forth with the laser cutting head (3). The laser cutting head (3) approaches the irregular steel structure plate. Multiple upper extrusion rods (41) and lower extrusion rods (51) simultaneously perform adaptive bonding extrusion on the upper and lower end faces of the irregular steel structure plate. Heat dissipation pipes (6) are provided on the sides of the upper extrusion rod (41) and the lower extrusion rod (51) that are close to each other. When the two extrude the irregular steel structure plate, the heat dissipation pipes (6) come into contact with the surface of the irregular steel structure plate.

2. The laser cutting machine for processing steel structure plates as described in claim 1, characterized in that: The upper end face of the material carrier (2) is fixedly installed with left and right symmetrical upper slide rails (401), and an upper slide block (402) is slidably installed in the upper slide rail (401). An upper positioning rod (403) is fixedly installed on the upper end face of the upper slide block (402). The upper alignment plate (4) is slidably installed on the upper positioning rods (403) on both sides. A spring rod (404) is fixedly installed between the upper alignment plate (4) and the upper slide block (402).

3. The laser cutting machine for processing steel structure plates as described in claim 2, characterized in that: The connecting assembly (31) includes a first slide rail (311) fixedly installed on the rear side of the upper alignment plate (4), and a first slider (312) fixedly connected to the laser cutting head (3) is slidably installed in the first slide rail (311).

4. The laser cutting machine for processing steel structure plates as described in claim 2, characterized in that: The lower end face of the material carrier (2) is fixedly installed with left and right symmetrical sliding tracks (501). A lower slide block (502) is slidably installed in the sliding track (501). A lower positioning rod (503) is fixedly installed on the lower end face of the lower slide block (502). The lower alignment plate (5) is slidably installed on the lower positioning rods (503) on both sides. A spring is fixedly installed between the lower positioning rod (503) and the lower alignment plate (5). A C-shaped connecting plate (42) is fixedly installed on the upper slide block (402) and the corresponding lower slide block (502).

5. The laser cutting machine for processing steel structure plates as described in claim 1, characterized in that: The upper extrusion rod (41) consists of an upper extrusion tube (412) and a lower contact block (411). The extrusion tube (412) is slidably installed on the upper alignment plate (4). The extrusion tube (412) and the contact block (411) are fixedly connected. A spring is provided between the extrusion tube (412) and the upper alignment plate (4).

6. The laser cutting machine for processing steel structure plates as described in claim 5, characterized in that: The lower end of the lower extrusion rod (51) is slidably installed on the lower alignment plate (5). A convex ring (511) is fixedly installed on the outer ring wall of the lower extrusion rod (51). A spring sleeved on the corresponding lower extrusion rod (51) is fixedly installed between the convex ring (511) and the lower alignment plate (5). A contact block (411) is also fixedly installed on the upper end of the lower extrusion rod (51).

7. The laser cutting machine for processing steel structure plates as described in claim 6, characterized in that: A heat dissipation pipe (6) is fixedly installed on the side wall of the contact block (411) of the lower extrusion rod (51) and the contact block (411) of the upper extrusion rod (41) that are close to each other. A ball bearing (53) is rotatably installed at the four corners of the side wall of the contact block (411) where the heat dissipation pipe (6) is installed, and the contact block (411) is made of thermally conductive material.

8. The laser cutting machine for processing steel structure plates as described in claim 4, characterized in that: The transmission assembly (52) includes a gear (523) rotatably mounted on a C-shaped connecting plate (42) via a set pin. A first rack (521) is fixedly mounted on the upper alignment plate (4), and a second rack (522) is fixedly mounted on the lower alignment plate (5). The gear (523) is located between the first rack (521) and the second rack (522) and meshes with both of them.

9. The laser cutting machine for processing steel structure plates as described in claim 5, characterized in that: The upper alignment plate (4) is provided with an upper heat dissipation assembly (61) connected to the heat dissipation pipe (6) of the upper extrusion rod (41). The upper heat dissipation assembly (61) includes an inlet telescopic pipe (611) and an outlet telescopic pipe (612) fixedly installed inside the extrusion pipe (412). The inlet telescopic pipe (611) and the outlet telescopic pipe (612) are connected to the heat dissipation pipe (6) of the corresponding upper extrusion rod (41). An upper connecting pipe (613) is fixedly installed on the upper end of several inlet telescopic pipes (611), and another upper connecting pipe (613) is fixedly installed on the upper end of several outlet telescopic pipes (612).

10. The laser cutting machine for processing steel structure plates as described in claim 7, characterized in that: A lower heat dissipation pipe (62) is fixedly installed on the lower alignment plate (5). The lower heat dissipation pipe (62) is connected to the heat dissipation pipe (6) of the lower extrusion rod (51) through a lower connecting pipe (621).

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