A laser cutting machine for metal pipes in shipyards

Abstract

This invention relates to the field of laser cutting machine technology, specifically to a metal pipe laser cutting machine for shipyards, comprising a base and a cutting machine located on the base. A material support platform is slidably mounted on the base, and a support assembly for rinsing welding slag debris is provided at the top of the material support platform. The support assembly includes a material tray and a liquid storage tank. The liquid storage tank can be used to store welding anti-spatter agent to prevent welding slag debris from sticking. The top of the material tray can hold the metal pipe to be cut. This invention controls the sleeve to rotate on the surface of the threaded rod, causing the limiting ring to rise and the clamping plate to rotate around the fixed column and clamp the metal pipe. Because the part of the metal pipe to be cut is at its bottom, it can prevent the debris generated during cutting from falling onto the threaded rod and rendering the threaded rod unusable.

Description

Technical Field

[0001] This invention relates to the field of laser cutting machine technology, specifically to a metal pipe laser cutting machine for shipyards. Background Technology

[0002] During the shipbuilding process, shipyards often use laser cutting machines (such as plasma arc welding machines) to cut raw materials such as metal pipes used in shipbuilding, so that the metal pipes are cut to the required size for use.

[0003] When laser cutting machines cut metal pipes, they typically use a clamping and positioning mechanism to hold and fix the cylindrical workpiece, preventing displacement of the pipe during cutting and thus avoiding deviations in the cutting position. However, a large amount of debris is inevitably generated during the cutting process. This debris generates extremely high temperatures under the influence of the laser cutting machine and is prone to falling off the metal pipe and sticking to components of the clamping and positioning mechanism (such as the screw). This can cause the screw to jam during subsequent rotation and adjustment, which needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a metal pipe laser cutting machine for shipyards to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal pipe laser cutting machine for shipyards, comprising a base and a cutting machine located on the base, a material support platform slidably mounted on the base, and a support assembly for rinsing welding slag debris at the top of the material support platform, the support assembly comprising a material tray and a liquid storage tank, the liquid storage tank being used to store welding anti-spatter agent to prevent welding slag debris from sticking, the top of the material tray being able to place the metal pipe for cutting, a support platform being provided on the base, and a clamping assembly being provided on the support platform for clamping the metal pipe and cooperating with it to perform circumferential cutting, the clamping assembly comprising a ring rotatably mounted on the top of the support platform for restricting the movement space of the metal pipe and driving it to rotate.

[0006] Two L-shaped extension blocks and two protrusions are fixedly installed on the side wall of the ring. The tops of the two extension blocks are at the same level as the top plate of the ring. Two fixing posts are fixedly installed on the top of each extension block. Clamping plates are movably fitted on the outer wall of each fixing post. A mounting frame and a first guide plate for guiding the movement of the metal tube are fixedly installed on the top of each clamping plate. A coating cloth for applying welding anti-spatter agent to the surface of the metal tube is installed in the mounting frame. Threaded rods are fixedly installed on the tops of the two protrusions. Sleeves are movably fitted on the outer wall of each threaded rod. The tops of the two sleeves are rotatably connected to a limit ring, and all four first guide plates are located in the limit ring.

[0007] The material tray is rotatably mounted on the bottom plate of the liquid storage tank, and a positioning column is fixedly mounted on the top of the material tray. Several fixing plates are fixedly mounted on the outer wall of the positioning column. Each fixing plate is provided with a sliding groove, and a sliding plate is slidably mounted in each sliding groove. A second guide plate and a linkage column are provided on the top of each sliding plate. A linkage collar is rotatably mounted on the outer wall of the positioning column. A second drive gear is movably fitted and meshed with the linkage collar on its outer wall. Several actuating blocks are fixedly mounted on the outer wall of the linkage collar.

[0008] A threaded fixing post is fixedly installed at the top of the positioning post. A sleeve is movably fitted on the outer wall of the threaded fixing post. An installation ring is rotatably installed on the outer wall of the sleeve. The installation ring has several grooves. A rotating shaft is installed in each groove of the installation ring. A linkage plate and a prying plate are fixedly installed on the outer wall of each rotating shaft. A support block and a spray plate are fixedly installed on each linkage plate. A liquid guide tube is provided in the installation ring. The liquid guide tube is connected to the spray plates through stainless steel corrugated hoses.

[0009] The supporting assembly also includes a tapered column, the bottom end of which is fixedly connected to the top end of the threaded fixing column by a number of uprights.

[0010] The bottom of the material tray is concave, and a pump body is installed in the concave part. The outlet of the pump body is fixedly connected to the liquid guide pipe.

[0011] The side wall of the material tray is provided with several inlets for the welding anti-spatter agent in the storage tank to enter the concave part of the material tray. Each inlet is provided with a filter screen for filtering welding slag and debris.

[0012] A scraper is fixedly installed on the inner wall of the liquid storage tank. The scraper is attached to the filter screen and can be used to scrape off welding slag and debris adhering to the filter screen.

[0013] Each of the spray plates is a hollow plate, and one side wall of the spray plate is curved. The curved side wall of the spray plate is provided with a number of spray through holes that communicate with the hollow part of the inner cavity of the spray plate.

[0014] The top of the support platform is provided with a first drive gear, and a belt is fitted between the first drive gear and the ring. The base is provided with a lifting slide groove, and a threaded column is provided in the lifting slide groove. The top of the threaded column is provided with a rotating gear that meshes with the first drive gear. A slider is movably fitted on the outer wall of the threaded column, and the slider is fixedly connected to the material support platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention controls the sleeve to rotate on the surface of the threaded rod, causing the limiting ring to rise and the clamping plate to rotate around the fixed column and clamp the metal tube. Since the part of the metal tube to be cut is at its bottom, it can prevent the debris generated during cutting from falling onto the threaded rod and rendering the threaded rod unusable.

[0017] By controlling the pump body, the welding anti-spatter agent in the storage tank is guided into the spray plate through the liquid guide pipe and stainless steel corrugated hose, and then sprayed onto the inner wall of the metal pipe through the spray plate. This removes the welding slag and debris that enters the metal pipe during the welding process, preventing the welding slag and debris from sticking to the inner wall of the metal pipe, as well as to the spray plate, support block or other components.

[0018] During the cutting process, the metal tube drives the material tray to rotate in the liquid storage tank. At this time, the welding slag adsorbed on the surface of the filter screen in the liquid inlet can be scraped off by the scraper, so that the welding anti-spatter agent in the liquid storage tank can enter the pump body through the liquid inlet. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a partial structural diagram of the present invention.

[0021] Figure 3 This is a schematic diagram of the first guide plate structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the ring structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the mounting bracket structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the supporting component structure of the present invention.

[0025] Figure 7 This is a schematic diagram of the spray plate structure of the present invention.

[0026] Figure 8 This is a schematic diagram of the sleeve structure of the present invention.

[0027] Figure 9 This is a schematic diagram of the conical column structure of the present invention.

[0028] Figure 10 This is a schematic diagram of the material tray structure of the present invention.

[0029] In the diagram: 1. Base; 2. Support platform; 3. Rotary gear disc; 4. Threaded column; 5. Slider; 6. Material support platform; 7. First drive gear; 8. Ring; 9. Belt; 10. Extension block; 11. Fixing column; 12. Clamping plate; 13. Mounting bracket; 14. Coating cloth; 15. First guide plate; 16. Protrusion; 17. Threaded rod; 18. Sleeve; 19. Limiting ring; 20. Support assembly; 21. Material tray; 22. Liquid storage tank; 23. Positioning column; 24. Fixing plate; 5. Sliding plate; 26. Linkage column; 27. Second guide plate; 28. Second drive gear; 29. ​​Linkage collar; 30. Actuating block; 31. Threaded fixing column; 32. Sleeve sleeve; 33. Mounting ring; 34. Rotating shaft; 35. Pry plate; 36. Linkage plate; 37. Support block; 38. Spray plate; 39. Conical column; 40. Vertical rod; 41. Liquid guide tube; 42. Stainless steel corrugated hose; 43. Liquid inlet; 44. Scraper; 45. Cutting machine; 46. Metal pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1 to 10This invention provides a technical solution: a laser cutting machine for metal pipes used in shipyards, including a base 1, on which a cutting machine 45 is mounted. The cutting machine 45 is manufactured using a plasma arc welding mechanism based on existing technology. A hydraulic push rod is provided at the bottom of the cutting machine 45 for easy height adjustment. A lifting slide is provided on the base 1, and a rotating gear 3 is provided at the top of the lifting slide. A square locking block is provided at the bottom of the rotating gear 3. A square slot matching the square locking block is provided at the top of the threaded column 4 for convenient subsequent... The rotating gear 3 is pulled out to disconnect its contact with the first drive gear 7. The threaded column 4 penetrates the top plate of the lifting slide and is rotatably mounted on the inner wall of the bottom end of the lifting slide. A slider 5 is movably mounted on the outer wall of the threaded column 4. The length and width of the slider 5 are the same as the length and width of the lifting slide. A material support platform 6 is fixedly mounted on the slider 5. A support component 20 is provided at the top of the material support platform 6. A metal tube 46 is movably mounted on the support component 20. A support platform 2 is fixedly mounted on the base 1. A through hole is provided on the support platform 2, through which the metal tube 46 can pass. The through hole extends to the top of the support platform 2. The top of the support platform 2 is equipped with a first drive gear 7 that meshes with the rotating gear disk 3. The first drive gear 7 consists of a rotary motor and a gear ring. The gear ring is fixedly mounted on the outer wall of the output shaft of the rotary motor. The gear ring meshes with the rotating gear disk 3. By controlling the first drive gear 7, the rotating gear disk 3 is driven to rotate. At this time, the slider 5 located on the threaded column 4 moves vertically up and down in the lifting groove, so that the material support platform 6 can move vertically up and down. The top of the support platform 2 is equipped with a clamping assembly. The top of the support platform 2 is equipped with a circular groove. A sliding block that matches it is slidably installed in the circular groove. The top of the sliding block is fixedly mounted with a ring 8, one of the clamping assemblies. The ring 8 and the first drive gear 7 are both fitted with a belt 9. The belt 9 is located in the part of the rotary motor output shaft that is not covered by the gear ring. So that when the first drive gear 7 rotates, the first drive gear 7 drives the ring 8 to rotate through the belt 9, which facilitates the rotation of the metal tube 46 to make a ring cut during the cutting process.

[0032] Two L-shaped extension blocks 10 are fixedly installed on the outer wall of the ring 8. The bottom end of the extension block 10 is movably attached to the belt 9. Two fixing posts 11 are fixedly installed on the top of each extension block 10. Clamping plates 12 are movably fitted on the outer wall of each fixing post 11. A mounting bracket 13 and a first guide plate 15 are fixedly installed on the top of each clamping plate 12. The top plate of the first guide plate 15 is arc-shaped to facilitate guiding the metal tube 46 through the support platform 2. A coating cloth 14 is fixedly installed on each mounting bracket 13. The coating cloth 14 extends out of the mounting bracket 13 and absorbs the welding. After the anti-spatter agent is applied, when the metal tube 46 passes through the through hole on the support platform 2, the welding anti-spatter agent on the coating cloth 14 will be wiped onto the surface of the metal tube 46 to prevent the debris generated during the cutting process from sticking to the surface of the metal tube 46. Two protrusions 16 are also fixedly installed on the outer wall of the ring 8. Threaded rods 17 are fixedly installed on the top of each of the two protrusions 16. Sleeves 18 are movably fitted on the outer wall of each of the two threaded rods 17. The tops of the two sleeves 18 are rotatably connected to the limiting ring 19. The four first guide plates 15 are all located in the inner ring of the limiting ring 19.

[0033] When the metal tube 46 passes through the through hole on the support platform 2, it is guided by the first guide plate 15 and passes through the through hole of the support platform 2. By controlling the sleeve 18 to rotate on the surface of the threaded rod 17, the limiting ring 19 is raised upward. During the upward movement, the inner wall of the limiting ring 19 pushes the first guide plate 15 to generate displacement. That is, the clamping plate 12 located at the bottom of the first guide plate 15 rotates around the fixing post 11 and clamps the metal tube 46, thus clamping and fixing the position of the metal tube 46. At this time, the threaded rod 17 is directly above the part of the metal tube 46 to be cut, which can effectively prevent the debris during the cutting process from sticking to the threaded rod 17 and affecting the use of the threaded rod 17.

[0034] The supporting assembly 20 includes a liquid storage tank 22, which is fixedly installed on the top of the material support platform 6. The liquid storage tank 22 can store welding anti-spatter agent. A material tray 21 is provided in the liquid storage tank 22, and the material tray 21 is rotatably installed in the liquid storage tank 22. A positioning post 23 is provided at the center of the top of the material tray 21. Several fixing plates 24 are fixedly installed on the outer wall of the positioning post 23. Each fixing plate 24 has a sliding groove at its top. A sliding plate 25 is slidably installed in each sliding groove. The sliding plate 25 is connected to the inner wall of the sliding groove by a return spring. A linkage post 26 is fixedly installed at the top of each sliding plate 25. A second guide plate 27 is also provided at the top of each sliding plate 25. The second guide plate 27 is rotatably connected to the sliding plate 25 by a torsion spring. When the metal tube 46 moves downward through the second guide plate 27, the second guide plate 26 is rotatably connected to the sliding plate 25 by a torsion spring. The guide plate 27 is attached to the top of the linkage column 26 to prevent the second guide plate 27 from rotating excessively and failing to guide the displacement of the metal tube 46. A linkage collar 29 is rotatably installed on the outer wall of the positioning column 23. Several actuating blocks 30 are provided on the outer wall of the linkage collar 29 to move the linkage column 26 and generate displacement. One side of the actuating block 30 is set as an arc surface to facilitate attachment to the linkage column 26 and actuation to generate displacement. The top of the material tray 21 is also provided with a second drive gear 28 with the same structure as the first drive gear 7. Several meshing teeth are provided on the outer walls of the second drive gear 28 and the linkage collar 29. The rotary motor, one of the components of the second drive gear 28, needs to be equipped with a frequency converter with locking function so that the second drive gear 28 can be locked after stopping.

[0035] When the metal tube 46 passes through the through hole on the support platform 2 and continues to move downward, the second guide plate 27 first guides the metal tube 46 to move downward until it is in contact with the top plate of the material tray 21. When the second drive gear 28 rotates, the linkage collar 29 will rotate. The actuating block 30 located on the linkage collar 29 will follow its rotation. During the rotation, the actuating block 30 pushes the linkage column 26 to move, so that the sliding plate 25 located at the bottom of the linkage column 26 moves horizontally until it is in contact with the inner wall of the metal tube 46, thus fixing the position of the bottom end of the metal tube 46.

[0036] A threaded fixing post 31 is fixedly installed at the top of the positioning post 23. A sleeve 32 is movably fitted on the outer wall of the threaded fixing post 31. A conical post 39 is set inside the sleeve 32. The bottom end of the conical post 39 is fixedly connected to the threaded fixing post 31 by several uprights 40. An installation ring 33 is rotatably installed on the outer wall of the sleeve 32. The top of the installation ring 33 is provided with several grooves. A rotating shaft 34 is rotatably installed in each groove. The rotating shaft 34 is connected to the inner wall of the groove by a torsion spring, so that the pry plate 35 can rotate downward and fit tightly against the conical post 39. Pry plates 35 and linkage plates 36 are fixedly installed on the outer walls of the several rotating shafts 34. Support blocks 37 and spray plates 38 are fixedly installed on the linkage plates 36. The several spray plates 38 are all hollow plates, and the spray plates are hollow. One sidewall of the spray plate 38 is curved, and several spray holes are provided on this sidewall, which are connected to the hollow part of the inner cavity of the spray plate 38. A liquid guide pipe 41 is provided in the mounting ring 33. The liquid guide pipe 41 is connected to several spray plates 38 through stainless steel corrugated hoses 42. The bottom end of the material tray 21 is concave, and a pump body is provided therein. The pump body can be made of water pumps in the prior art. The liquid guide pipe 41 passes through the conical column 39, the threaded fixing column 31, the positioning column 23, and the material tray 21 and is connected to the water outlet of the pump body. This facilitates the delivery of welding anti-spatter agent to the spray plate 38 and sprays it out to coat the inner wall of the metal tube 46. This prevents the debris generated during the cutting process from melting at high temperature and sticking to the inner wall of the metal tube 46, which would affect the later use of the metal tube 46.

[0037] The sleeve 32 is controlled to rotate downwards according to the inner diameter of the metal tube 46 to be cut. Since the position of the conical column 39 is fixed, when the sleeve 32 drives the mounting ring 33 to rotate downwards, the pry plate 35 rotates due to the position restriction provided by the conical column 39, which changes the position of the support block 37 until it is the same as the inner diameter of the metal tube 46. This facilitates the inner wall support of the metal tube 46 by several support blocks 37. At this time, the pump body guides the welding anti-spatter agent in the liquid storage tank 22 into the spray plate 38 through the liquid guide pipe 41 and the stainless steel corrugated hose 42, and sprays it onto the inner wall of the metal tube 46 through the spray plate 38.

[0038] The outer wall of the material tray 21 is provided with several liquid inlets 43, each of which is equipped with a filter screen. The filter screen can be used to filter the welding slag in the welding anti-spatter agent. A scraper 44 is fixedly installed on the inner wall of the storage tank 22. The scraper 44 is in contact with the filter screen, and its surface is provided with several thin rubber rods. When the metal tube 46 is clamped by the clamping plate 12 on the ring 8, the ring 8 rotates with the first drive gear 7 through the belt 9, causing the metal tube 46 to rotate with the ring 8. Because the sliding plate 25 abuts against the inner wall of the metal tube 46, the material tray 21 can be driven to rotate in the storage tank 22 when the metal tube 46 is not cut. At this time, the welding slag adsorbed on the surface of the filter screen in the liquid inlet 43 can be scraped off by the scraper 44, so that the welding anti-spatter agent in the storage tank 22 can enter the pump body through the liquid inlet 43.

[0039] In use, the present invention first activates the electrical components on the base 1 via an external power source. Based on the inner diameter of the metal tube 46, the sleeve 32 rotates downwards. As the sleeve 32 rotates downwards, the mounting ring 33 rotates, causing the pry plate 35 to rotate due to the constraint of the conical column 39. This changes the position of the support block 37 until it matches the inner diameter of the metal tube 46, allowing the support block 37 to provide inner wall support for the metal tube 46. The metal tube 46 then passes through the through hole on the support platform 2, is guided by the first guide plate 15, and then passes through the support platform 2. The through-hole is fitted onto the outer wall of several support blocks 37 until it is in contact with the top of the material tray 21. The first drive gear 7 drives the rotating gear disk 3 to rotate. During the rotation of the threaded column 4, the material support table 6 moves downward until the metal tube 46 to be cut is at the same level as the cutting machine 45. Then the rotating gear disk 3 is removed. During the downward movement of the metal tube 46, the welding anti-spatter agent on the coating cloth 14 is wiped onto the surface of the metal tube 46. Then the sleeve 18 is controlled to rotate on the surface of the threaded rod 17 to make the limiting ring 19 move towards the surface of the threaded rod 17. The tube is lifted upwards, and during the upward movement, the first guide plate 15 is displaced by the inner wall of the limiting ring 19. This causes the clamping plate 12 at the bottom of the first guide plate 15 to rotate around the fixed column 11 and clamp the metal tube 46. It also controls the rotation of the second drive gear 28, causing the linkage collar 29 to rotate. The actuating block 30 on the linkage collar 29 follows this rotation, and during this rotation, the actuating block 30 pushes the linkage column 26 to move. This causes the sliding plate 25 at the bottom of the displacement linkage column 26 to translate until it adheres to the inner wall of the metal tube 46, thus affecting the metal tube. Once the position of the tube 46 is fixed, the metal tube 46 can be cut by the cutting machine 45. At this time, the first drive gear 7 drives the ring 8 to rotate through the belt 9. During the rotation of the ring 8, the metal tube 46 is rotated to perform a ring cutting operation. During the cutting process, the welding anti-spatter agent in the storage tank 22 is guided into the spray plate 38 through the liquid guide pipe 41 and the stainless steel corrugated hose 42 by the control pump body. The agent is then sprayed onto the inner wall of the metal tube 46 through the spray plate 38 to remove the welding slag and debris that entered the metal tube 46 during the welding process.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal pipe laser cutting machine for shipyards, comprising a base and a cutting machine located on the base, characterized in that: A material support platform is slidably mounted on the base. The top of the material support platform is equipped with a support assembly for rinsing welding slag and debris. The support assembly includes a material tray and a liquid storage tank. The liquid storage tank stores welding anti-spatter agent to prevent welding slag and debris from sticking. A metal tube for cutting can be placed on the top of the material tray. A support platform is provided on the base. A clamping assembly for clamping and circumferentially cutting the metal tube is provided on the support platform. The clamping assembly includes a ring rotatably mounted on the top of the support platform to restrict the movement of the metal tube and drive its rotation. Two L-shaped extension blocks and two protrusions are fixedly mounted on the side wall of the ring. The tops of the two extension blocks are at the same level as the top plate of the ring, and two fixing posts are fixedly mounted on the top of each extension block. Clamping plates are movably fitted onto the outer walls of each fixing post. A mounting bracket and a first guide plate for guiding the movement of the metal tube are fixedly mounted on the top of each clamping plate. The mounting bracket contains a cloth for applying welding anti-spatter agent to the surface of the metal pipe. Threaded rods are fixedly mounted on the tops of the two protrusions. Sleeves are movably fitted onto the outer walls of the threaded rods. The tops of the two sleeves are rotatably connected to a limiting ring, and all four first guide plates are located within the limiting ring. The material tray is rotatably mounted on the bottom plate of the liquid storage tank, and a positioning post is fixedly mounted on the top of the material tray. A threaded fixing post is fixedly mounted on the top of the positioning post. A sleeve is movably fitted onto the outer wall of the threaded fixing post. An installation ring is rotatably mounted on the outer wall of the sleeve. The installation ring has several grooves, and a rotating shaft is installed in each groove. A linkage plate and a prying plate are fixedly mounted on the outer wall of each rotating shaft. A support block and a spray plate are fixedly mounted on each linkage plate. A liquid guide pipe is provided in the installation ring, and the liquid guide pipe is connected to the spray plates via stainless steel corrugated hoses.

2. The metal pipe laser cutting machine for shipyards according to claim 1, characterized in that: Several fixing plates are fixedly installed on the outer wall of the positioning column. Each fixing plate is provided with a sliding groove, and a sliding plate is slidably installed in each sliding groove. A second guide plate and a linkage column are provided at the top of each sliding plate. A linkage collar is rotatably installed on the outer wall of the positioning column. A second drive gear is movably fitted and meshed with the outer wall of the linkage collar. Several actuating blocks are fixedly installed on the outer wall of the linkage collar.

3. The metal pipe laser cutting machine for shipyards according to claim 1, characterized in that: The supporting assembly also includes a tapered column, the bottom end of which is fixedly connected to the top end of the threaded fixing column by a number of uprights.

4. A laser cutting machine for metal pipes in a shipyard according to claim 1, characterized in that: The bottom of the material tray is concave, and a pump body is installed in the concave part. The outlet of the pump body is fixedly connected to the liquid guide pipe.

5. A laser cutting machine for metal pipes in a shipyard according to claim 1, characterized in that: The side wall of the material tray is provided with several inlets for the welding anti-spatter agent in the storage tank to enter the concave part of the material tray. Each inlet is provided with a filter screen for filtering welding slag and debris.

6. A laser cutting machine for metal pipes in a shipyard according to claim 1, characterized in that: A scraper is fixedly installed on the inner wall of the liquid storage tank. The scraper is attached to the filter screen and can be used to scrape off welding slag and debris adhering to the filter screen.

7. A laser cutting machine for metal pipes in a shipyard according to claim 1, characterized in that: Each of the spray plates is a hollow plate, and one side wall of the spray plate is curved. The curved side wall of the spray plate is provided with a number of spray through holes that communicate with the hollow part of the inner cavity of the spray plate.

8. A laser cutting machine for metal pipes in a shipyard according to claim 1, characterized in that: The top of the support platform is provided with a first drive gear, and a belt is fitted between the first drive gear and the ring. The base is provided with a lifting slide groove, and a threaded column is provided in the lifting slide groove. The top of the threaded column is provided with a rotating gear that meshes with the first drive gear. A slider is movably fitted on the outer wall of the threaded column, and the slider is fixedly connected to the material support platform.

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