A laser cutting device for heat-resistant steel plate

Abstract

This invention belongs to the field of heat-resistant steel plate production and processing technology, specifically a laser cutting device for heat-resistant steel plates. It includes two side plates, with a blade worktable mounted on the upper end of each side plate. The blade worktable is composed of several serrated slats. A conveyor belt is slidably mounted on the lower end of the blade worktable, with several serrated belts mounted on the outer side of the conveyor belt. These serrated belts can slide between the serrated slats. A laser cutting head is slidably mounted on the upper end of the blade worktable. By driving the conveyor belt, the serrated belts slide upwards, lifting the cut heat-resistant steel plate upwards. Subsequently, driving the conveyor belt to rotate causes the serrated belts to rotate as well, which can cause the cut heat-resistant steel plate to slide to one side. When cutting larger heat-resistant steel plates, this device prevents dragging the plate during loading and unloading, thus avoiding scratches and affecting the quality of the cut workpiece.

Description

Technical Field

[0001] This invention belongs to the field of heat-resistant steel plate production and processing technology, specifically a laser cutting device for heat-resistant steel plates. Background Technology

[0002] Heat-resistant steel plates, with their high strength at high temperatures, creep resistance, corrosion resistance, and oxidation resistance, are widely used in high-end equipment manufacturing fields such as aero-engines, gas turbines, boiler pressure vessels, nuclear power pipelines, high-temperature heat exchange equipment, and automotive exhaust systems. These parts are mostly irregularly shaped and high-precision contour parts. Traditional sawing, plasma cutting, and milling processes suffer from defects such as poor precision, large thermal damage, and severe tool wear. Laser cutting, with its advantages of non-contact processing, high precision, and flexible forming, is gradually becoming the mainstream blanking process for heat-resistant steel plates. The market demand for specialized equipment adapted to heat-resistant steel plates continues to increase.

[0003] A patent application with publication number CN121267435B discloses a steel plate laser cutting device. It achieves efficient and uniform slag removal and heat treatment to prevent deformation by incorporating a pretreatment mechanism and a flatness grinding mechanism. The pretreatment mechanism mainly consists of a second large gear, a sleeve, grinding blocks, a ring, and a negative pressure device. During operation, the sleeve rotates, driving the grinding blocks to move synchronously. The front grinding blocks complete the deoxidation and flattening treatment of the steel plate surface before cutting. The threaded grooves on the inner wall of the sleeve guide dust to the channel, where it is collected and recovered via a negative pressure pipe and negative pressure device. Simultaneously, it helps stabilize the airflow in the cutting area, providing a clean and flat processing surface for laser cutting.

[0004] In the aforementioned prior art, when laser cutting heat-resistant steel plates, the entire steel plate needs to be removed from the laser cutting table after the cutting is completed, and then the workpiece cut from the middle of the steel plate is removed. When removing larger heat-resistant steel plates, they are generally removed by dragging, which will cause scratches on the heat-resistant steel plates.

[0005] Therefore, the present invention provides a laser cutting device for heat-resistant steel plates. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a laser cutting device for heat-resistant steel plates, comprising two side plates, with a blade worktable provided at the upper end of the two side plates. The blade worktable is composed of a plurality of serrated slats. A conveyor belt is slidably provided at the lower end of the blade worktable, and a plurality of serrated belts are provided on the outer side of the conveyor belt. The plurality of serrated belts can slide between the plurality of serrated slats. A laser cutting head is slidably provided at the upper end of the blade worktable. A ring is provided on the outer side of the lower end of the laser cutting head. A first cylinder is provided at the lower end of the ring. The first cylinder has a hollow internal structure. A second cylinder is slidably provided inside the lower end of the first cylinder. The second cylinder is fixedly connected to the lower end of the ring by a first spring.

[0008] Preferably, U-shaped plates are provided on both sides of the lower end of the conveyor belt, the output end of the first hydraulic rod is fixedly connected to the lower end of the U-shaped plates, and a rectangular plate is fixedly connected between the two side plates at the lower end, with the first hydraulic rod fixedly connected to the upper end of the rectangular plate.

[0009] Preferably, the blade worktable is fixedly connected to both sides of a first electric slide rail, and a first electric slide table is slidably arranged on the upper end of the first electric slide rail. A rectangular column is fixedly connected to the upper end of the first electric slide table, and a second electric slide rail is fixedly connected between the rectangular columns. A second electric slide table is slidably arranged on one side of the second electric slide rail, and a rectangular frame is fixedly connected to one side of the second electric slide table. A rectangular slider is fixedly connected to the middle of the laser cutting head, and the rectangular slider is slidably arranged on one side of the second electric slide table.

[0010] Preferably, the second cylinder has a hollow structure in the middle, and a through hole is provided on one side of the lower end of the second cylinder. A third cylinder is fixedly connected to the upper end of the ring. The third cylinder has a hollow structure in the middle, and a through hole is provided in the middle of the ring. The third cylinder communicates with the interior of the first cylinder. The upper end of the third cylinder is fixedly connected to the collection box through a flexible tube. A support block is fixedly connected to the upper end of the rectangular column, and the flexible tube is slidably disposed in the middle of the support block.

[0011] Preferably, the lower end of the second cylinder is fixedly connected to an inclined plate ring, and the outer side of the inclined plate ring is wrapped with a ring rubber sleeve.

[0012] Preferably, a rectangular box is provided on one side of the side plate, and support bars are slidably provided on both sides of the upper end of the rectangular box.

[0013] Preferably, a first rectangular block is fixed to each end of one side of the support bar, and a cylindrical bar is fixed between two opposite first rectangular blocks. The end of the cylindrical bar is fixed to the rectangular box through a first L-shaped plate, and the two cylindrical bars are fixed together by the first rectangular bar. A second rectangular block is fixed to the middle of one side of the support bar, and a bidirectional screw is threaded to the middle of the second rectangular block. The bidirectional screw is rotatably disposed in the middle of the first rectangular bar, and a second L-shaped plate is rotatably disposed at both ends of the bidirectional screw. The second L-shaped plate is fixed to one side of the rectangular box.

[0014] Preferably, a plurality of cylindrical blocks are provided on the upper end of the rectangular box near the blade worktable.

[0015] Preferably, a second rectangular strip is provided on the upper end of several cylindrical blocks. A cylindrical rod is fixedly connected to the upper end of each cylindrical block. A circular plate is fixedly connected to the upper end of each cylindrical rod. The cylindrical rod is slidably disposed in the middle of the second rectangular strip. A third spring is provided on the outer side of the upper end of the cylindrical rod. The circular plate is fixedly connected to the second rectangular strip through the third spring. A second hydraulic rod is fixedly connected to both sides of the lower end of the second rectangular strip. The second hydraulic rod is fixedly connected to the rectangular box through a fixing block.

[0016] Preferably, a support plate is slidably disposed inside the rectangular box, and a rubber pad is disposed at the upper end of the support plate. The support plate is fixedly connected to the bottom end of the rectangular box by a second spring.

[0017] The beneficial effects of this invention are as follows: 1. The laser cutting device for heat-resistant steel plates of the present invention drives a toothed belt to slide upward by driving a conveyor belt. The toothed belt lifts the cut heat-resistant steel plate upward. Then, the drive conveyor belt rotates, which drives the toothed belt to rotate, and can drive the cut heat-resistant steel plate to slide to one side. When cutting larger heat-resistant steel plates, it prevents the heat-resistant steel plate from being dragged during loading and unloading, causing scratches and affecting the quality of the cut workpiece.

[0018] 2. The laser cutting device for heat-resistant steel plates of the present invention, by activating the air pump inside the collection box, allows the fumes and dust generated during cutting to enter the second cylinder through a through hole on one side of the second cylinder, then through the first cylinder into the third cylinder, and finally through a hose into the collection box. During the cutting process, the laser cutting head moves on the upper part of the heat-resistant steel plate, causing the second cylinder to move on the upper part of the steel plate. The second cylinder causes the circular rubber sleeve to slide tightly against the upper part of the heat-resistant steel plate, scraping off the slag generated during laser cutting on the upper part of the steel plate, while preventing slag from splashing onto the uncut areas of the heat-resistant steel plate, keeping the upper part of the cut area clean. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram showing the position of the second electric slide. Figure 3 This is a schematic diagram showing the position of the sawtooth belt; Figure 4 This is a schematic diagram of the interior of the third cylinder cross-section; Figure 5 This is a schematic diagram of the cross-section of the second cylinder; Figure 6 This is a schematic diagram showing the location of the support bars; Figure 7 This is a schematic diagram showing the location of the support plate; Figure 8 This is a schematic diagram showing the position of the cylindrical block; In the diagram: 1. Side plate; 11. Blade worktable; 12. Conveyor belt; 121. Toothed belt; 122. U-shaped plate; 123. First hydraulic rod; 124. Rectangular plate; 13. First electric slide rail; 131. First electric slide table; 14. Rectangular column; 141. Second electric slide rail; 15. Second electric slide table; 151. Rectangular frame; 16. Laser cutting head; 161. Rectangular slider; 162. Ring; 163. First cylinder; 164. Second cylinder; 1641. Inclined ring; 1642. Ring rubber sleeve; 165. First spring; 16 6. Third cylinder; 167. Hose; 1671. Support block; 168. Collection box; 2. Rectangular box; 21. Support bar; 211. First rectangular block; 212. Cylindrical bar; 213. First L-shaped plate; 214. First rectangular bar; 22. Second rectangular block; 221. Two-way lead screw; 222. Second L-shaped plate; 23. Support plate; 231. Rubber pad; 232. Second spring; 24. Cylindrical block; 241. Cylindrical rod; 242. Circular plate; 243. Third spring; 25. Second rectangular bar; 251. Second hydraulic rod; 252. Fixing block. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1: As Figure 1 - Figure 8As shown in the embodiment of the present invention, a laser cutting device for heat-resistant steel plates includes two side plates 1. A blade worktable 11 is provided on the upper end of the two side plates 1. The blade worktable 11 is composed of a plurality of serrated sword bars. A conveyor belt 12 is slidably provided on the lower end of the blade worktable 11. A plurality of serrated belts 121 are provided on the outer side of the conveyor belt 12. The plurality of serrated belts 121 can slide between the plurality of serrated sword bars. A laser cutting head 16 is slidably provided on the upper end of the blade worktable 11. A ring 162 is provided on the outer side of the lower end of the laser cutting head 16. A first cylinder 163 is provided on the lower end of the ring 162. The first cylinder 163 has a hollow structure inside. A second cylinder 164 is slidably provided inside the lower end of the first cylinder 163. The second cylinder 164 is fixed to the lower end of the ring 162 by a first spring 165.

[0023] Specifically, when laser cutting heat-resistant steel plates, after cutting, the entire steel plate needs to be removed from the laser cutting table, and then the workpiece cut from the middle of the steel plate needs to be removed. When removing larger heat-resistant steel plates, they are usually dragged off, which can cause scratches. When using this laser cutting device, the heat-resistant steel plate is placed on the upper end of the blade worktable 11, and then the laser cutting head 16 is driven to cut the heat-resistant steel plate. When the laser cutting head 16 cuts the heat-resistant steel plate, the laser cutting head 16 drives the first cylinder 163 to move closer to the heat-resistant steel plate through the ring 162. The first cylinder 163 drives the second cylinder 164 to fit tightly against the upper end of the heat-resistant steel plate. The first cylinder 163 and the second cylinder 164 enclose the laser cutting head 16 to prevent... The fumes and dust generated during cutting cause pollution. After cutting, the drive conveyor belt 12 moves upward, and the drive conveyor belt 12 drives the toothed belt 121 to slide upward. Several toothed belts 121 slide upward between adjacent toothed scissor bars. The toothed belts 121 push the cut heat-resistant steel plate at the top of the blade worktable 11 upward, so that the cut heat-resistant steel plate is away from the blade worktable 11. Then the drive conveyor belt 12 rotates, which drives the toothed belts 121 to rotate, which can drive the cut heat-resistant steel plate to slide to one side until the cut heat-resistant steel plate is completely removed from the top of the blade worktable 11. Then the workpiece cut from the middle of the steel plate is removed. When cutting larger heat-resistant steel plates, this prevents the heat-resistant steel plate from being dragged during loading and unloading, causing scratches and affecting the quality of the cut workpiece.

[0024] like Figure 3 As shown, U-shaped plates 122 are provided on both sides of the lower end of the conveyor belt 12. The output end of the first hydraulic rod 123 is fixedly connected to the lower end of the U-shaped plate 122. A rectangular plate 124 is fixedly connected between the two side plates 1 at the lower end. The first hydraulic rod 123 is fixedly connected to the upper end of the rectangular plate 124.

[0025] Specifically, by driving the first hydraulic rod 123 to extend, the first hydraulic rod 123 drives the conveyor belt 12 to slide upward through the U-shaped plate 122. The conveyor belt 12 drives the toothed belt 121 to move upward, pushing the heat-resistant steel plate at the upper end of the blade worktable 11 upward away from the blade worktable 11. Then, the conveyor belt 12 is driven to rotate, thereby driving the toothed belt 121 to rotate, which can convey the heat-resistant steel plate to the side away from the blade worktable 11.

[0026] like Figure 2 - Figure 4 As shown, the blade worktable 11 is fixedly connected to two sides of a first electric slide rail 13. A first electric slide table 131 is slidably arranged on the upper end of the first electric slide rail 13. A rectangular column 14 is fixedly connected to the upper end of the first electric slide table 131. A second electric slide rail 141 is fixedly connected between the rectangular columns 14. A second electric slide table 15 is slidably arranged on one side of the second electric slide rail 141. A rectangular frame 151 is fixedly connected to one side of the second electric slide table 15. A rectangular slider 161 is fixedly connected to the middle of the laser cutting head 16. The rectangular slider 161 is slidably arranged on one side of the second electric slide table 15.

[0027] Specifically, by driving the first electric slide table 131 to slide on the upper end of the first electric slide rail 13, the first electric slide table 131 drives the second electric slide rail 141 to slide through the rectangular column 14. By driving the second electric slide table 15 to slide outside the second electric slide rail 141, the laser cutting head 16 slides on the upper end of the blade worktable 11. The rectangular slider 161 drives the laser cutting head 16 to slide up and down on one side of the second electric slide table 15. The laser cutting head 16 cuts the heat-resistant steel plate on the upper end of the blade worktable 11.

[0028] like Figure 4 As shown, the second cylinder 164 has a hollow structure in the middle, and a through hole is provided on one side of the lower end of the second cylinder 164. The upper end of the ring 162 is fixedly connected to the third cylinder 166, which has a hollow structure in the middle, and a through hole is provided in the middle of the ring 162. The third cylinder 166 is internally connected to the first cylinder 163. The upper end of the third cylinder 166 is fixedly connected to the collection box 168 through a flexible hose 167. The upper end of the rectangular column 14 is fixedly connected to the support block 1671, and the flexible hose 167 is slidably disposed in the middle of the support block 1671.

[0029] like Figure 5 As shown, the lower end of the second cylinder 164 is fixedly connected to an inclined plate ring 1641, and the outer side of the inclined plate ring 1641 is wrapped with a ring rubber sleeve 1642.

[0030] Specifically, when the laser cutting head 16 approaches the heat-resistant steel plate at the upper end of the blade worktable 11, the laser cutting head 16 drives the second cylinder 164 to press tightly against the upper end of the heat-resistant steel plate. Then, the air pump inside the collection box 168 is activated. The fumes and dust generated during cutting enter the interior of the second cylinder 164 through a through hole on one side, then enter the interior of the third cylinder 166 through the first cylinder 163, and then enter the interior of the collection box 168 through the hose 167. During the cutting process, the laser cutting head 16 moves on the upper end of the heat-resistant steel plate, driving the second cylinder 164 to move on the upper end of the steel plate. The second cylinder 164 drives the annular rubber sleeve 1642 to slide tightly against the upper end of the heat-resistant steel plate, scraping off the slag generated during laser cutting on the upper end of the steel plate, while preventing slag from splashing onto the uncut areas of the heat-resistant steel plate, keeping the upper end of the cut area clean.

[0031] like Figure 6 As shown, a rectangular box 2 is provided on one side of the side plate 1, and support bars 21 are slidably provided on both sides of the upper end of the rectangular box 2.

[0032] like Figure 7 As shown, a first rectangular block 211 is fixed to both ends of one side of the support bar 21, and a cylindrical bar 212 is fixed between the two first rectangular blocks 211. The end of the cylindrical bar 212 is fixed to the rectangular box 2 through a first L-shaped plate 213. The two cylindrical bars 212 are fixed together by a first rectangular bar 214. A second rectangular block 22 is fixed to the middle part of one side of the support bar 21. A bidirectional screw 221 is threaded to the middle of the second rectangular block 22. The bidirectional screw 221 is rotatably disposed in the middle of the first rectangular bar 214. A second L-shaped plate 222 is rotatably disposed at both ends of the bidirectional screw 221. The second L-shaped plate 222 is fixed to one side of the rectangular box 2.

[0033] Specifically, by driving the bidirectional lead screw 221 to rotate, the second rectangular block 22 drives the support bars 21 on both sides to slide towards the center. The distance between the two support bars 21 is adjusted according to the width of the steel plate. When the saw belt 121 lifts the heat-resistant steel plate at the top of the blade worktable 11 and conveys it to one side, the two ends of the heat-resistant steel plate are located at the top of the support bars 21, and the support bars 21 support the cut heat-resistant steel plate.

[0034] like Figure 7 As shown, several cylindrical blocks 24 are provided on the upper end of the rectangular box 2 near the blade worktable 11.

[0035] like Figure 8As shown, a second rectangular bar 25 is commonly provided on the upper end of several cylindrical blocks 24. A cylindrical rod 241 is fixedly connected to the upper end of each cylindrical block 24. A circular plate 242 is fixedly connected to the upper end of each cylindrical rod 241. The cylindrical rod 241 is slidably disposed in the middle of the second rectangular bar 25. A third spring 243 is provided on the outer side of the upper end of the cylindrical rod 241. The circular plate 242 is fixedly connected to the second rectangular bar 25 through the third spring 243. A second hydraulic rod 251 is fixedly connected to both sides of the lower end of the second rectangular bar 25. The second hydraulic rod 251 is fixedly connected to the rectangular box 2 through a fixing block 252.

[0036] Specifically, when the saw belt 121 lifts the heat-resistant steel plate at the upper end of the blade worktable 11 and conveys it to one side, so that both ends of the heat-resistant steel plate are located at the upper end of the support bar 21, the second hydraulic rod 251 is then driven to retract. The second hydraulic rod 251 drives the cylindrical block 24 at the lower end of the cylindrical rod 241 to move downward through the second rectangular bar 25. The cylindrical block 24 strikes the cut heat-resistant steel plate, causing the workpiece cut in the middle of the heat-resistant steel plate to fall off.

[0037] Example 2: Figure 7 As shown in the first embodiment, another embodiment of the present invention is as follows: a support plate 23 is slidably arranged inside the rectangular box 2, a rubber pad 231 is provided on the upper end of the support plate 23, and the support plate 23 is fixedly connected to the bottom end of the rectangular box 2 by a second spring 232.

[0038] Specifically, when the cylindrical block 24 strikes the cut heat-resistant steel plate, the workpiece cut in the middle of the heat-resistant steel plate falls off. The falling workpiece lands on the upper end of the support plate 23. The rubber pad 231 on the upper end of the support plate 23 prevents the workpiece from falling and causing collisions. As more and more workpieces fall off, the weight on the upper end of the support plate 23 increases, squeezing the second spring 232 to slide downwards. The upper end of the support plate 23 can prevent more workpieces from falling off.

[0039] Working principle: When using this laser cutting device, a heat-resistant steel plate is placed on the upper end of the blade worktable 11. Then, the first electric slide 131 is driven to slide on the upper end of the first electric slide rail 13. The first electric slide 131 drives the second electric slide rail 141 to slide via the rectangular column 14. The second electric slide 15 is driven to slide outside the second electric slide rail 141, causing the laser cutting head 16 to slide on the upper end of the blade worktable 11. The rectangular slider 161 drives the laser cutting head 16 to slide up and down on one side of the second electric slide 15. The laser cutting head 16 cuts the heat-resistant steel plate on the upper end of the blade worktable 11. When the laser cutting head 16 approaches the heat-resistant steel plate on the upper end of the blade worktable 11, the laser cutting head 16... The second cylinder 164 is pressed tightly against the upper end of the heat-resistant steel plate. Then, the air pump inside the collection box 168 is started. The fumes and dust generated during cutting enter the second cylinder 164 through the through hole on one side of the second cylinder 164, then enter the third cylinder 166 through the first cylinder 163, and then enter the collection box 168 through the hose 167. During the cutting process, the laser cutting head 16 moves on the upper end of the heat-resistant steel plate, which drives the second cylinder 164 to move on the upper end of the steel plate. The second cylinder 164 drives the circular rubber sleeve 1642 to slide tightly against the upper end of the heat-resistant steel plate, scraping off the slag generated during laser cutting on the upper end of the steel plate, while preventing slag from splashing onto the uncut parts of the heat-resistant steel plate, keeping the upper end of the cut part clean. After cutting, the first hydraulic rod 123 is extended by driving it. The first hydraulic rod 123 drives the conveyor belt 12 to slide upward through the U-shaped plate 122. The conveyor belt 12 drives the toothed belt 121 to move upward, lifting the heat-resistant steel plate at the top of the blade worktable 11 away from the blade worktable 11. Then, the conveyor belt 12 is driven to rotate, thereby driving the toothed belt 121 to rotate, which can transport the heat-resistant steel plate away from the blade worktable 11. Then, the bidirectional lead screw 221 is driven to rotate, which drives the support bars 21 on both sides to slide towards the middle through the second rectangular block 22. The distance between the two support bars 21 is adjusted according to the width of the steel plate. When the toothed belt 121 lifts the heat-resistant steel plate at the top of the blade worktable 11 and transports it to one side, the two ends of the heat-resistant steel plate are located at the top of the support bars 21. The support bars 21 support the cut heat-resistant steel plate. When the saw belt 121 lifts the heat-resistant steel plate at the upper end of the blade worktable 11 and conveys it to one side, so that both ends of the heat-resistant steel plate are located at the upper end of the support bar 21, the second hydraulic rod 251 is then driven to retract. The second hydraulic rod 251 drives the cylindrical block 24 at the lower end of the cylindrical rod 241 to move downward through the second rectangular bar 25. The cylindrical block 24 strikes the cut heat-resistant steel plate, causing the workpiece cut in the middle of the heat-resistant steel plate to fall off. When the cylindrical block 24 strikes the cut heat-resistant steel plate, the workpiece cut in the middle of the heat-resistant steel plate falls off. The fallen workpiece lands on the upper end of the support plate 23. The rubber pad 231 provided on the upper end of the support plate 23 prevents the workpiece from falling and causing collisions. As more and more workpieces fall, the weight on the upper end of the support plate 23 increases, squeezing the second spring 232 to slide downward. The upper end of the support plate 23 can prevent more workpieces from falling off.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cutting device for heat-resistant steel plates, characterized in that: It includes two side plates (1), and a blade worktable (11) is provided on the upper end of the two side plates (1). The blade worktable (11) is composed of several serrated sword bars. A conveyor belt (12) is slidably provided on the lower end of the blade worktable (11). Several serrated belts (121) are provided on the outer side of the conveyor belt (12). The several serrated belts (121) can slide between the several serrated sword bars respectively. A laser cutting head (16) is slidably provided on the upper end of the blade worktable (11). A ring (162) is provided on the outer side of the lower end of the laser cutting head (16). A first cylinder (163) is provided on the lower end of the ring (162). The first cylinder (163) has a hollow structure inside. A second cylinder (164) is slidably provided inside the lower end of the first cylinder (163). The second cylinder (164) is fixed to the lower end of the ring (162) by a first spring (165).

2. The laser cutting device for heat-resistant steel plates according to claim 1, characterized in that: The conveyor belt (12) is provided with U-shaped plates (122) on both sides of the lower end. The output end of the first hydraulic rod (123) is fixedly connected to the lower end of the U-shaped plate (122). A rectangular plate (124) is fixedly connected between the two side plates (1) at the lower end. The first hydraulic rod (123) is fixedly connected to the upper end of the rectangular plate (124).

3. The laser cutting device for heat-resistant steel plates according to claim 2, characterized in that: The blade worktable (11) is fixedly connected to two sides of a first electric slide rail (13). The upper end of the first electric slide rail (13) is slidably provided with a first electric slide table (131). The upper end of the first electric slide table (131) is fixedly provided with a rectangular column (14). The rectangular columns (14) are fixedly connected to each other. A second electric slide rail (141) is fixedly connected between the rectangular columns (14). A second electric slide table (15) is slidably provided on one side of the second electric slide rail (141). A rectangular frame (151) is fixedly connected on one side of the second electric slide table (15). A rectangular slider (161) is fixedly connected in the middle of the laser cutting head (16). The rectangular slider (161) is slidably provided on one side of the second electric slide table (15).

4. The laser cutting device for heat-resistant steel plates according to claim 3, characterized in that: The second cylinder (164) has a hollow structure in the middle. A through hole is provided on one side of the lower end of the second cylinder (164). A third cylinder (166) is fixedly connected to the upper end of the ring (162). The third cylinder (166) has a hollow structure in the middle. A through hole is provided in the middle of the ring (162). The third cylinder (166) is connected to the interior of the first cylinder (163). The upper end of the third cylinder (166) is fixedly connected to the collection box (168) through a hose (167). A support block (1671) is fixedly connected to the upper end of the rectangular column (14). The hose (167) is slidably arranged in the middle of the support block (1671).

5. The laser cutting device for heat-resistant steel plates according to claim 4, characterized in that: The lower end of the second cylinder (164) is fixed with an inclined plate ring (1641), and the outer side of the inclined plate ring (1641) is wrapped with a ring rubber sleeve (1642).

6. The laser cutting device for heat-resistant steel plates according to claim 1, characterized in that: A rectangular box (2) is provided on one side of the side plate (1), and support bars (21) are slidably provided on both sides of the upper end of the rectangular box (2).

7. The laser cutting device for heat-resistant steel plates according to claim 6, characterized in that: The support bar (21) has a first rectangular block (211) fixed to both ends on one side, and a cylindrical bar (212) fixed between the two first rectangular blocks (211). The end of the cylindrical bar (212) is fixed to the rectangular box (2) through a first L-shaped plate (213). The two cylindrical bars (212) are fixed together by a first rectangular bar (214). The support bar (21) has a second rectangular block (22) fixed to the middle part on one side, and a double-acting screw (221) is threaded to the middle part of the second rectangular block (22). The double-acting screw (221) is rotatably disposed in the middle part of the first rectangular bar (214). The two ends of the double-acting screw (221) are rotatably disposed with a second L-shaped plate (222). The second L-shaped plate (222) is fixed to one side of the rectangular box (2).

8. The laser cutting device for heat-resistant steel plates according to claim 7, characterized in that: Several cylindrical blocks (24) are provided on the upper end of the rectangular box (2) near the blade worktable (11).

9. The laser cutting device for heat-resistant steel plates according to claim 8, characterized in that: A second rectangular bar (25) is provided on the upper end of several cylindrical blocks (24). A cylindrical rod (241) is fixedly connected to the upper end of each cylindrical block (24). A circular plate (242) is fixedly connected to the upper end of each cylindrical rod (241). The cylindrical rod (241) is slidably disposed in the middle of the second rectangular bar (25). A third spring (243) is provided on the outer side of the upper end of the cylindrical rod (241). The circular plate (242) is fixedly connected to the second rectangular bar (25) through the third spring (243). A second hydraulic rod (251) is fixedly connected to both sides of the lower end of the second rectangular bar (25). The second hydraulic rod (251) is fixedly connected to the rectangular box (2) through a fixing block (252).

10. The laser cutting device for heat-resistant steel plates according to claim 9, characterized in that: A support plate (23) is slidably arranged inside the rectangular box (2). A rubber pad (231) is provided on the upper end of the support plate (23). The support plate (23) is fixed to the bottom of the rectangular box (2) by a second spring (232).

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