Laser cutting device for steel

Abstract

The invention relates to the technical field of laser cutting machining, and discloses a steel laser cutting device which comprises a machining tool, a cutting distance measuring mechanism is arranged above the machining tool, a laser cutting mechanism is arranged above the cutting distance measuring mechanism, and a slag falling hole is formed in the top of the machining tool. And a slag collecting mechanism is arranged below the slag falling hole. According to the laser cutting device for the steel, the eight lifting air cylinders drive the second steel brackets at the two ends to lift, the steel can be conveniently lifted, the bearing distance between the first steel brackets can be conveniently adjusted, distance parameters can be conveniently adjusted in an auxiliary mode through a distance sensor, and the second steel brackets descend after adjustment and are borne through the first steel brackets; a first air cylinder drives a steel clamping plate to conduct telescopic adjustment, steel of different widths can be clamped and limited conveniently, slag welded by a laser cutting head falls into a slag drawer through a slag falling hole, a third air cylinder drives a slag pushing plate to be pushed inwards, and waste slag is conveniently cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting processing, and specifically relates to a laser cutting device for steel. Background Technique

[0002] A laser cutting machine emits laser light from a laser, which is focused into a laser beam with a high power density through an optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point. At the same time, a high-pressure gas coaxial with the beam blows away the melted or vaporized metal. As the relative position of the beam and the workpiece moves, finally a cut is formed in the material, thus achieving the purpose of cutting. Laser cutting belongs to one of the thermal cutting methods and is widely used in the cutting field of steel, with the characteristics of a burr-free cut surface and high precision.

[0003] In the prior art, such as "A Laser Cutting Device for Steel" with Chinese Patent No. CN116765634B, it includes a base. A lead screw fixing mechanism for the steel pipe is arranged at the middle position of the base. Support seats are symmetrically and vertically arranged on both sides of the base. An intermediate seat is horizontally arranged at the upper ends of the two support seats. Limiting chutes are symmetrically opened on both side edges of the upper end surface of the intermediate seat. For the laser cutting device for steel of the present invention, when the first control valve on the suction pipe is opened, negative pressure is generated at the suction port position. On the one hand, this negative pressure acts on the residual molten material during spraying, and in cooperation with the air pressure of the nozzle, the acting force is increased, the dead angle position is excluded, and the residue is removed to ensure that the cutting gap opening is cleaned. On the other hand, the falling molten material and some solidified substances can enter the suction pipe and then enter the waste box, sticking to the dust collection cloth bag to achieve the collection effect, reducing the amount of dust in the workshop and bringing a better application prospect.

[0004] However, in the prior art, although negative pressure is generated at the suction port position, on the one hand, this negative pressure acts on the residual molten material during spraying, and in cooperation with the air pressure of the nozzle, the acting force is increased, the dead angle position is excluded, and the residue is removed. However, during steel cutting, it is inconvenient to flexibly control the cutting distance, the support is not stable enough, and the collected waste residue is also inconvenient to centrally clean, affecting the actual processing effect. Therefore, a laser cutting device for steel is urgently needed. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] The purpose of the present invention is to provide a laser cutting device for steel to solve the problems mentioned in the above background technique, that is, during steel cutting, it is inconvenient to flexibly control the cutting distance, the support is not stable enough, and the collected waste residue is also inconvenient to centrally clean, affecting the actual processing effect.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention provides the following technical solution: A laser cutting device for steel, including a processing machine tool, above which a cutting and ranging mechanism is provided, above which a laser cutting mechanism is provided, on the top of the processing machine tool there is a slag dropping hole, below which a slag collection mechanism is provided, and at the bottom of the slag collection mechanism there is a supporting bracket;

[0009] The cutting and ranging mechanism includes a slag dropping hole, on both sides of which there are symmetrically arranged first guide rails, on the top of the first guide rails there is a sliding first slider, on the top of the first slider there is a ranging adjustment component, the ranging adjustment component includes a first steel bracket, on both sides of the first steel bracket there are second steel brackets, at the bottom of the second steel brackets there is a connecting bottom frame, on the top of the connecting bottom frame there are symmetrically arranged lifting card slots, at the bottom of the connecting bottom frame there is a lifting slide plate adapted to the lifting card slots, at the bottom of the connecting bottom frame there are symmetrically arranged lifting cylinders, and the lifting cylinders are arranged at the bottom of the second steel brackets, and distance sensors are respectively arranged at the bottoms of the first steel bracket and the second steel brackets.

[0010] As a preferred technical solution of the present invention, the laser cutting mechanism includes a mounting bracket, on the top of the mounting bracket there is a connecting bracket, inside the wall of the connecting bracket there is a rotatably connected first lead screw, on one side of the connecting bracket there is a first servo motor, outside the first lead screw there is a nut seat, at the bottom of the nut seat there is a slide table seat, at the bottom of the slide table seat there is a second guide rail, outside the second guide rail there is a sliding second slider, at the bottom of the second slider there is a second cylinder, and at the bottom end of the second cylinder there is a laser cutting head.

[0011] As a preferred technical solution of the present invention, the slag collection mechanism includes a slag drawer, on one side of the bottom of the slag drawer there is a slag outlet, near the slag outlet on one side of the slag drawer there is a limit card slot, inside the wall of the limit card slot there is a sealing card plate slidingly arranged and adapted thereto, on one side of the slag drawer there are symmetrically arranged limit blocks, the limit blocks are slidingly arranged on one side of the supporting bracket, and on the other side of the slag drawer there is a pulling ring.

[0012] As a preferred technical solution of the present invention, on one side of the first guide rail close to the slag dropping hole there is a transmission rack, on the bottoms of the first steel bracket and the connecting bottom frame there are symmetrically arranged rotating shaft holes, inside the walls of the rotating shaft holes there are rotatably arranged transmission shafts, the bottom ends of the transmission shafts are connected with transmission gears meshing with the transmission rack, and the top ends of the transmission shafts are fixedly connected with the driving ends of electric motors through couplings.

[0013] As a preferred technical solution of the present invention, moving sliding holes are symmetrically arranged on the slag drawer, a slag pushing plate adapted thereto is slidably arranged on the inner wall of the slag drawer, moving sliders adapted to the moving sliding holes are symmetrically arranged on both sides of the top of the slag pushing plate, a connection hole is arranged on the other side of the slag drawer, third cylinders adapted to the connection hole are symmetrically arranged on the other side of the slag drawer, and one end of each third cylinder is fixedly connected to the slag pushing plate.

[0014] As a preferred technical solution of the present invention, a second lead screw is rotatably connected to the inner wall of the sliding table base, the second lead screw is movably connected to the second slider, a second servo motor is arranged on one side of the sliding table base, the second servo motor is fixedly connected to one end of the second lead screw through a coupling, and the first servo motor is fixedly connected to one end of the first lead screw through a coupling.

[0015] As a preferred technical solution of the present invention, fixed support plates are symmetrically arranged on the tops of the first steel bracket and the second steel bracket respectively, one end of a first cylinder is connected to one side of the fixed support plate, and the other end of the first cylinder is connected to a steel clamping plate.

[0016] As a preferred technical solution of the present invention, reinforcing ribs are respectively arranged at the included angles on both sides of the tops of the first steel bracket and the second steel bracket, the first sliders are linearly distributed, the first sliders are arranged at the bottom of the first steel bracket, and the first sliders are also arranged at the bottom of the connecting chassis.

[0017] As a preferred technical solution of the present invention, limiting support plates are symmetrically arranged on both sides of the transmission rack, and the limiting support plates are arranged on both sides of the slag dropping hole.

[0018] As a preferred technical solution of the present invention, the bottom of the mounting bracket is fixedly connected to the processing machine tool by setting fastening bolts.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. For the laser cutting device for steel, eight lifting cylinders drive the second steel brackets at both ends to lift, facilitating the lifting of the steel. The lifting card slots cooperate with the lifting slide plates to help improve the stability of lifting, and it is convenient to adjust the supporting distance between the first steel brackets, facilitating the cutting of the distance between the steels. The distance sensor conveniently assists in adjusting the distance parameters. After adjustment, the second steel bracket descends and is supported by the first steel bracket. The fixed support plate fixes the first cylinder, and the first cylinder drives the steel clamping plate to perform telescopic adjustment, facilitating the clamping and limiting of steels with different widths;

[0021] 2. For the laser cutting device for steel, the first servo motor drives the first lead screw to rotate, which facilitates driving the nut seat to move linearly, and further facilitates driving the laser cutting head to move horizontally. The second servo motor drives the second lead screw to rotate, which facilitates driving the second slider to move linearly, and further facilitates driving the laser cutting head to move vertically, facilitating the adjustment of the cutting position of the laser cutting head.

[0022] 3. For the laser cutting device for steel, the molten slag welded by the laser cutting head falls into the slag drawer through the slag dropping hole. When the slag drawer is full, the third cylinder drives the slag pushing plate to push inward. The slag pushing plate is limited by the moving slider through the moving slide hole. The slag drawer is partially pulled out by mechanical equipment in cooperation with the pulling ring. The limiting of the sealing card plate by the supporting bracket is released. The sealing card plate is conveniently hung on the slag drawer through the limiting card slot. Pulling out the sealing card plate facilitates opening the slag outlet, facilitating the collection and transfer of the molten slag for cleaning by a trolley tool. After cleaning, the slag drawer is pushed into the interior of the supporting bracket, and the limiting block is convenient for limiting the slag drawer, facilitating the cleaning of the waste slag, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a laser cutting device for steel in an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the bottom structure of a laser cutting device for steel in an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of a partial structure of a laser cutting device for steel in an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the cutting distance measuring mechanism structure of a laser cutting device for steel in an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the laser cutting mechanism structure of a laser cutting device for steel in an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the slag collection mechanism structure of a laser cutting device for steel in an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the partial explosion structure of the slag collection mechanism of a laser cutting device for steel in an embodiment of the present invention;

[0030] Figure 8 It is a schematic diagram of the partial structure of the cutting distance measuring mechanism of a laser cutting device for steel in an embodiment of the present invention;

[0031] Figure 9 Exploded view of a partial cutting distance measuring mechanism of a laser cutting device for steel in an embodiment of the present invention;

[0032] Figure 10 Schematic diagram of the processing machine tool structure of a laser cutting device for steel in an embodiment of the present invention.

[0033] In the figure:

[0034] 1. Processing machine tool;

[0035] 2. Cutting distance measuring mechanism; 201. First guide rail; 202. First slider; 203. Driving rack; 204. Limiting support plate; 25. Distance measuring adjustment assembly; 251. First steel bracket; 252. Second steel bracket; 253. Reinforcing rib; 254. Connecting base frame; 255. Lifting card slot; 256. Lifting slide plate; 257. Rotating shaft hole; 258. Transmission shaft; 259. Transmission gear; 260. Electric motor; 261. Lifting cylinder; 262. Fixed support plate; 263. First cylinder; 264. Steel clamping plate; 265. Distance sensor;

[0036] 3. Laser cutting mechanism; 301. Mounting bracket; 302. Connecting bracket; 303. First lead screw; 304. First servo motor; 305. Nut seat; 306. Slide base; 307. Second guide rail; 308. Second slider; 309. Second cylinder; 310. Laser cutting head; 311. Second lead screw; 312. Second servo motor; 313. Tightening bolt;

[0037] 4. Molten slag dropping hole;

[0038] 5. Molten slag collection mechanism; 501. Molten slag drawer; 502. Molten slag outlet; 503. Limiting card slot; 504. Sealing card plate; 505. Moving slide hole; 506. Molten slag pushing plate; 507. Moving slider; 508. Connecting hole; 509. Third cylinder; 510. Limiting block; 511. Pulling ring;

[0039] 6. Supporting bracket. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Please refer to Figures 1 - 10, the present invention provides a technical solution: a laser cutting device for steel, including a processing machine tool 1, a cutting distance measuring mechanism 2 is arranged above the processing machine tool 1, a laser cutting mechanism 3 is arranged above the cutting distance measuring mechanism 2, a slag dropping hole 4 is arranged at the top of the processing machine tool 1, a slag collection mechanism 5 is arranged below the slag dropping hole 4, and a supporting bracket is arranged at the bottom of the slag collection mechanism 5;

[0042] To facilitate those skilled in the art to fully understand the specific structure and principle of the cutting distance measuring mechanism 2, further description is made on the cutting distance measuring mechanism 2. In this embodiment, the cutting distance measuring mechanism 2 includes a slag dropping hole 4, first guide rails 201 are symmetrically arranged on both sides of the slag dropping hole 4, first sliders 202 are slidably arranged on the tops of the first guide rails 201, a distance measuring and adjusting assembly 25 is arranged on the top of the first slider 202, the distance measuring and adjusting assembly 25 includes a first steel bracket 251, second steel brackets 252 are arranged on both sides of the first steel bracket 251, a connecting bottom frame 254 is arranged at the bottom of the second steel bracket 252, lifting card slots 255 are symmetrically formed at the top of the connecting bottom frame 254, a lifting slide plate 256 adapted to the lifting card slots 255 is arranged at the bottom of the connecting bottom frame 254, lifting cylinders 261 are symmetrically arranged at the bottom of the connecting bottom frame 254, and the lifting cylinders 261 are arranged at the bottom of the second steel bracket 252, distance sensors 265 are respectively arranged at the bottoms of the first steel bracket 251 and the second steel bracket 252, a transmission rack 203 is arranged on one side of the first guide rail 201 close to the slag dropping hole 4, rotating shaft holes 257 are symmetrically arranged at the bottoms of the first steel bracket 251 and the connecting bottom frame 254 respectively, a transmission shaft 258 is rotatably arranged on the inner wall of the rotating shaft hole 257, the bottom end of the transmission shaft 258 is connected with a transmission gear 259 meshed with the transmission rack 203, the top end of the transmission shaft 258 is fixedly connected with the driving end of an electric motor 260 through a coupling, fixing support plates 262 are symmetrically arranged at the tops of the first steel bracket 251 and the second steel bracket 252 respectively, one end of a first cylinder 263 is connected to one side of the fixing support plate 262, the other end of the first cylinder 263 is connected with a steel clamping plate 264, reinforcing ribs 253 are respectively arranged at the top two-side angles of the first steel bracket 251 and the second steel bracket 252, the first sliders 202 are linearly distributed, the first sliders 202 are arranged at the bottom of the first steel bracket 251, the first sliders 202 are also arranged at the bottom of the connecting bottom frame 254, limiting support plates 204 are symmetrically arranged on both sides of the transmission rack 203, and the limiting support plates 204 are arranged on both sides of the slag dropping hole 4.

[0043] Specifically, the first steel bracket 251 and the second steel bracket 252 facilitate the support of steel. The electric motor 260 drives the transmission shaft 258 to rotate, and the transmission shaft 258 drives the transmission gear 259 to rotate. The transmission gear 259 meshes with the transmission rack 203 to drive the first steel bracket 251 and the connecting chassis 254 to move linearly. The limiting support plate 204 facilitates the limitation of the movement. The first steel bracket 251 and the connecting chassis 254 cooperate with the first slider 202 and the first guide rail 201 to help improve the stability of the movement. The eight lifting cylinders 261 drive the second steel brackets 252 at both ends to lift, facilitating the lifting of the steel. The lifting card slots 255 cooperate with the lifting slide plates 256 to help improve the stability of the lifting, facilitating the adjustment of the support distance between the first steel brackets 251 and facilitating the spacing cutting of the steel. The distance sensor 265 facilitates the auxiliary adjustment of the spacing parameters. After the adjustment, the second steel bracket 252 descends and is supported by the first steel bracket 251. The fixed support plate 262 fixes the first cylinder 263, and the first cylinder 263 drives the steel clamping plate 264 to expand and contract for adjustment, facilitating the clamping and limitation of steel with different widths.

[0044] To facilitate the full understanding of the specific structure and principle of the laser cutting mechanism 3 by those skilled in the art, a further description of the laser cutting mechanism 3 is made. In this embodiment, the laser cutting mechanism 3 includes a mounting bracket 301. A connecting bracket 302 is provided at the top of the mounting bracket 301. The inner wall of the connecting bracket 302 is rotatably connected to a first lead screw 303. A first servo motor 304 is provided on one side of the connecting bracket 302. A nut seat 305 is movably arranged outside the first lead screw 303. A slide table seat 306 is provided at the bottom of the nut seat 305. A second guide rail 307 is provided at the bottom of the slide table seat 306. A second slider 308 is slidably arranged outside the second guide rail 307. A second cylinder 309 is provided at the bottom of the second slider 308. A laser cutting head 310 is provided at the bottom end of the second cylinder 309. The inner wall of the slide table seat 306 is rotatably connected to a second lead screw 311. The second lead screw 311 is movably connected to the second slider 308. A second servo motor 312 is provided on one side of the slide table seat 306. The second servo motor 312 is fixedly connected to one end of the second lead screw 311 through a coupling. The first servo motor 304 is fixedly connected to one end of the first lead screw 303 through a coupling. The bottom of the mounting bracket 301 is fixedly connected to the processing machine tool 1 through a fastening bolt 313.

[0045] Specifically, the mounting bracket 301 is fixed to the processing machine tool 1 by fastening bolts 313, so as to support the connecting bracket 302. The first servo motor 304 drives the first lead screw 303 to rotate, so as to drive the nut seat 305 to move linearly, and then to drive the laser cutting head 310 to move horizontally. The nut seat 305 is connected to the slide seat 306. The second servo motor 312 drives the second lead screw 311 to rotate, so as to drive the second slide block 308 to move linearly, and then to drive the laser cutting head 310 to move longitudinally, so as to facilitate the laser cutting head 310 to adjust the cutting position.

[0046] In order to facilitate those skilled in the art to fully understand the specific structure and principle of the slag collection mechanism 5, the slag collection mechanism 5 is further described. In this embodiment, the slag collection mechanism 5 includes a slag drawer 501, a slag outlet 502 is provided on one side of the bottom of the slag drawer 501, a limit card slot 503 is provided on one side of the slag drawer 501 close to the slag outlet 502, a sealing card plate 504 matching the limit card slot 503 is slidably provided on the inner wall of the limit card slot 503, a limit card block 510 is symmetrically provided on one side of the slag drawer 501, the limit card block 510 is slidably provided on one side of the supporting bracket, and a pull-out ring 503 is provided on the other side of the slag drawer 501. 11. The slag drawer 501 is symmetrically provided with movable sliding holes 505, the inner wall of the slag drawer 501 is slidably provided with a slag pushing plate 506 adapted thereto, movable sliding blocks 507 adapted thereto are symmetrically provided on both sides of the top of the slag pushing plate 506, a connecting hole 508 is provided on the other side of the slag drawer 501, a third cylinder 509 adapted thereto is symmetrically provided on the other side of the slag drawer 501, and one end of the third cylinder 509 is connected and fixed to the slag pushing plate 506.

[0047] Specifically, the slag welded by the laser cutting head 310 falls into the slag drawer 501 through the slag drop hole 4. When the slag drawer 501 is full, the slag push plate 506 is driven inward by the third cylinder 509. The slag push plate 506 is limited by the movable slide hole 505 in cooperation with the movable slider 507. The slag drawer 501 is partially pulled out by mechanical equipment in cooperation with the pull-out ring 511, and the limit of the supporting bracket on the sealing card plate 504 is released. The sealing card plate 504 is conveniently hung on the slag drawer 501 through the limit card slot 503. Pulling out the sealing card plate 504 facilitates opening the slag outlet 502, so that the slag can be received and transported for cleaning by the cart tool. After cleaning, the slag drawer 501 is pushed into the supporting bracket. The limit card block 510 facilitates limiting the slag drawer 501, which is convenient for cleaning waste slag, and is quick and convenient.

[0048] Working principle: First, the first steel bracket 251 and the second steel bracket 252 are convenient for supporting steel. The electric motor 260 drives the transmission shaft 258 to rotate, the transmission shaft 258 drives the transmission gear 259 to rotate, and the transmission gear 259 meshes with the transmission rack 203 to conveniently drive the first steel bracket 251 and the connecting chassis 254 to move linearly. The limiting support plate 204 is convenient for limiting the movement. The first steel bracket 251 and the connecting chassis 254 cooperate with the first slider 202 and the first guide rail 201 to help improve the stability of the movement. Eight lifting cylinders 261 drive the second steel brackets 252 at both ends to lift, which is convenient for lifting the steel. The lifting card slot 255 and the lifting slide plate 256 cooperate to help improve the stability of the lifting, which is convenient for adjusting the supporting distance between the first steel brackets 251 and is convenient for cutting the distance between the steel. The distance sensor 265 is convenient for assisting in adjusting the distance parameters. After adjustment, the second steel bracket 252 descends and is supported by the first steel bracket 251. The fixed support plate 262 fixes the first cylinder 263, and the first cylinder 263 drives the steel clamping plate 264 to perform telescopic adjustment, which is convenient for clamping and limiting steel with different widths;

[0049] The installation bracket 301 is fixed on the processing machine tool 1 through the fastening bolt 313, which is convenient for supporting the connecting bracket 302. The first servo motor 304 drives the first lead screw 303 to rotate, which conveniently drives the nut seat 305 to move linearly, and then is convenient for driving the laser cutting head 310 to move horizontally. The nut seat 305 is connected to the slide table seat 306. The second servo motor 312 drives the second lead screw 311 to rotate, which conveniently drives the second slider 308 to move linearly, and then is convenient for driving the laser cutting head 310 to move longitudinally, which is convenient for adjusting the cutting position of the laser cutting head 310. The slag welded by the laser cutting head 310 falls into the slag drawer 501 through the slag dropping hole 4. When the slag drawer 501 is full, the third cylinder 509 drives the slag pushing plate 506 to push inward. The slag pushing plate 506 is limited by the moving slide hole 505 and the moving slider 507. The slag drawer 501 is pulled out a part through mechanical equipment and the pulling ring 511. The limiting of the sealing card plate 504 by the supporting bracket is released. The sealing card plate 504 is convenient for hanging on the slag drawer 501 through the limiting card slot 503. Pulling out the sealing card plate 504 is convenient for opening the slag outlet 502, which is convenient for receiving and transporting the slag for cleaning through a trolley tool. After cleaning, the slag drawer 501 is pushed into the interior of the supporting bracket. The limiting block 510 is convenient for limiting the slag drawer 501, which is convenient for cleaning the waste slag and is convenient and fast.

[0050] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the protection scope of the present invention. Any simple modification or equivalent replacement of the technical solution of the present invention by those of ordinary skill in the art shall not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A laser cutting device for steel, characterized in that: It includes a processing machine tool (1), above which a cutting and ranging mechanism (2) is provided, above which a laser cutting mechanism (3) is provided, on the top of the processing machine tool (1) there is a slag drop hole (4), below the slag drop hole (4) there is a slag collection mechanism (5), and at the bottom of the slag collection mechanism (5) there is a supporting bracket; The cutting and ranging mechanism (2) includes a slag drop hole (4), on both sides of the slag drop hole (4) there are symmetrically arranged first guide rails (201), on the top of the first guide rails (201) there is a first slider (202) slidably arranged, on the top of the first slider (202) there is a ranging adjustment assembly (25), the ranging adjustment assembly (25) includes a first steel bracket (251), on both sides of the first steel bracket (251) there are second steel brackets (252), at the bottom of the second steel brackets (252) there is a connecting base frame (254), on the top of the connecting base frame (254) there are symmetrically arranged lifting card slots (255), at the bottom of the connecting base frame (254) there is a lifting slide plate (256) adapted to the lifting card slots (255), at the bottom of the connecting base frame (254) there are symmetrically arranged lifting cylinders (261), and the lifting cylinders (261) are arranged at the bottom of the second steel brackets (252), and distance sensors (265) are respectively arranged at the bottoms of the first steel bracket (251) and the second steel brackets (252).

2. The laser cutting device for steel according to claim 1, wherein: The laser cutting mechanism (3) includes a mounting bracket (301), on the top of the mounting bracket (301) there is a connecting bracket (302), inside the wall of the connecting bracket (302) there is a first lead screw (303) rotatably connected, on one side of the connecting bracket (302) there is a first servo motor (304), outside the first lead screw (303) there is a nut seat (305) movably arranged, at the bottom of the nut seat (305) there is a slide table seat (306), at the bottom of the slide table seat (306) there is a second guide rail (307), outside the second guide rail (307) there is a second slider (308) slidably arranged, at the bottom of the second slider (308) there is a second cylinder (309), and at the bottom end of the second cylinder (309) there is a laser cutting head (310).

3. A laser cutting device for steel according to claim 1, characterized in that: The slag collection mechanism (5) includes a slag drawer (501), on one side of the bottom of the slag drawer (501) there is a slag outlet (502), near the slag outlet (502) on one side of the slag drawer (501) there is a limit card slot (503), inside the wall of the limit card slot (503) there is a sealing card plate (504) slidably arranged and adapted to it, on one side of the slag drawer (501) there are symmetrically arranged limit blocks (510), the limit blocks (510) are slidably arranged on one side of the supporting bracket, and on the other side of the slag drawer (501) there is a pull ring (511).

4. A laser cutting device for steel according to claim 1, characterized in that: On one side of the first guide rail (201) close to the slag dropping hole (4), a transmission rack (203) is provided. On the bottoms of the first steel bracket (251) and the connecting chassis (254), rotating shaft holes (257) are symmetrically provided. Inside the inner walls of the rotating shaft holes (257), transmission shafts (258) are rotatably provided. At the bottom ends of the transmission shafts (258), transmission gears (259) engaged with the transmission rack (203) are connected. At the top ends of the transmission shafts (258), through setting a coupling, they are fixedly connected with the driving ends of electric motors (260).

5. A laser cutting device for steel according to claim 3, characterized in that: On the slag drawer (501), moving sliding holes (505) are symmetrically provided. Inside the inner wall of the slag drawer (501), a slag pushing plate (506) adapted thereto is slidably provided. On both sides of the top of the slag pushing plate (506), moving sliders (507) adapted to the moving sliding holes (505) are symmetrically provided. On the other side of the slag drawer (501), a connecting hole (508) is provided. On the other side of the slag drawer (501), third cylinders (509) adapted to the connecting hole (508) are symmetrically provided. One ends of the third cylinders (509) are fixedly connected with the slag pushing plate (506).

6. A laser cutting device for steel according to claim 2, characterized in that: Inside the inner wall of the sliding table base (306), a second lead screw (311) is rotatably connected. The second lead screw (311) is movably connected with a second slider (308). On one side of the sliding table base (306), a second servo motor (312) is provided. Through setting a coupling, the second servo motor (312) is fixedly connected with one end of the second lead screw (311). Through setting a coupling, the first servo motor (304) is fixedly connected with one end of the first lead screw (303).

7. A laser cutting device for steel according to claim 1, characterized in that: On the tops of the first steel bracket (251) and the second steel bracket (252), fixed support plates (262) are symmetrically provided. One ends of first cylinders (263) are connected to one sides of the fixed support plates (262). The other ends of the first cylinders (263) are connected with steel clamping plates (264).

8. A laser cutting device for steel according to claim 1, characterized in that: At the included angles on both sides of the tops of the first steel bracket (251) and the second steel bracket (252), reinforcing ribs (253) are respectively provided. The first sliders (202) are linearly distributed. The first sliders (202) are provided at the bottom of the first steel bracket (251). The first sliders (202) are also provided at the bottom of the connecting chassis (254).

9. The laser cutting device for steel according to claim 4, wherein: On both sides of the transmission rack (203), limit support plates (204) are symmetrically provided, and the limit support plates (204) are provided on both sides of the slag dropping hole (4).

10. A laser cutting device for steel according to claim 2, characterized in that: The bottom of the mounting bracket (301) is fixedly connected with the processing machine tool (1) through setting fastening bolts (313).

Images