Laser beam cutting device for stainless steel fireproof door processing

Abstract

The application belongs to the field of laser cutting, and particularly relates to a stainless steel fireproof door processing laser beam cutting device, which comprises a driving seat, a transfer groove is formed in the top of the driving seat, a plurality of parallelly arranged conveying rollers are installed in the transfer groove, screw nut mechanisms are installed on the two sides of the driving seat, a movable gantry is installed between the moving ends of the two screw nut mechanisms, a laser cutting machine is installed at the moving end of the movable gantry, a laser cutting head is fixedly connected to the bottom of the laser cutting machine, two dynamic partitions are arranged around the outer side of the laser cutting head, through the arrangement, the pollution of waste gas generated in the cutting process to the working environment is effectively reduced, some cutting debris will not be broken outwards, and the observation of the cutting part by the outside will not be blocked, when the dynamic partition stops rotating, the closed space will be released, the forming and releasing process of the closed space is facilitated, the cost is reduced, and the operation is more convenient.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting, specifically a laser beam cutting device for processing stainless steel fire doors. Background Technology

[0002] Laser cutting is a processing technology that uses a high-energy-density laser beam to irradiate the surface of a workpiece, causing the material to melt and vaporize instantly, thereby achieving precise separation. It is a non-contact thermal processing technology with the characteristics of high precision, narrow kerf, and smooth cross-section. It is especially suitable for the rapid blanking and complex contour cutting of metal sheets such as stainless steel. This process generates high-temperature fumes and harmful gases, so mature equipment usually needs to be equipped with dust removal and ventilation systems to meet environmental protection requirements.

[0003] Steel fire doors are mainly composed of three parts: the door frame, the door panel, and the fire-resistant core material inside. The door panel is made of thin steel plate as the outer shell and filled with inorganic non-combustible heat insulation materials such as expanded perlite board, which also has a certain degree of integrity. The door panel and door frame are often processed using laser cutting equipment.

[0004] Traditional laser cutting equipment has a relatively simple structure, simply using a laser cutting module to cut and process raw materials. It lacks a suitable protective structure, which causes the exhaust gas and waste generated during cutting to be directly dispersed into the air, resulting in pollution of the production environment and affecting the health of operators.

[0005] Therefore, the present invention provides a laser beam cutting device for processing stainless steel fire doors. 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 beam cutting device for processing stainless steel fire doors, including a drive base, a transfer groove is provided on the top of the drive base, a plurality of parallel transport rollers are installed in the transfer groove, a screw nut mechanism is installed on both sides of the drive base, a moving gantry is installed between the moving ends of the two screw nut mechanisms, a laser cutting machine is installed at the moving end of the moving gantry, a laser cutting head is fixedly connected to the bottom of the laser cutting machine, two dynamic partitions are surrounded on the outside of the laser cutting head, the dynamic partitions can rotate, and an absorption seat that moves synchronously with the moving gantry is provided below the transport rollers; This setup effectively reduces the pollution of the working environment caused by exhaust gases generated during the cutting process. Some cutting debris will not be ejected outwards, and it will not obstruct external observation of the cutting area. When the dynamic partition stops rotating, the enclosed space will be released, facilitating the formation and release of the enclosed space. This reduces costs and makes operation more convenient.

[0008] Preferably, a lifting post is fixedly connected to the outer side of the laser cutting head near the top. A driver is fixedly connected to the moving end of the lifting post. The rotating end of the driver is a rotating ring, which is rotatably engaged in the middle of the driver. The rotating ring is connected to a dynamic partition. The lifting post drives the driver to sink, thereby causing the protective area formed by the dynamic partition to rise and fall. During operation, the bottom of the dynamic partition is infinitely close to the surface of the steel sheet, preventing internal air from escaping. At the same time, in conjunction with the height change of the laser cutting head, the safe position of the dynamic partition is always maintained. The rotation of the rotating ring drives the rotation of the two dynamic partitions, completing the formation of the closed area.

[0009] Preferably, two symmetrically arranged movable arms are fixedly connected to the outer side of the rotating ring. A movable platform is sleeved on the outer side of each movable arm. Connecting arms are rotatably connected to both sides of the movable platform. A servo motor for driving the connecting arms to rotate is installed on one side of the movable platform. The bottom of the two connecting arms is fixedly connected to a dynamic partition. By adjusting the position of the movable platform on the movable arm, the protection range after rotation can be expanded or reduced. The servo motor can drive the connecting arms to rotate, controlling the tilt angle of the dynamic partition and the connecting arms. When the dynamic partition tilts inward, making the protection range a frustum shape that is narrow at the bottom and wide at the top, it can better limit the welding exhaust gas generated at the bottom. When it tilts outward, making it a frustum shape that is narrow at the top and wide at the bottom, it can expand the coverage area of ​​the bottom surface and better adapt to the processing state.

[0010] Preferably, absorption holes are provided on both sides of the laser cutting head, and a top cover is fixedly connected to the top of the absorption seat. The movable screw and nut mechanism is fixedly connected to a series platform, which is fixedly connected to the movable gantry and the absorption seat. Since the cutting gap is small, if the exhaust gas is only drawn away by the cutting gap, it is easy to cause the air pressure in the closed space to be too high, causing the airflow to overflow. By opening the absorption holes, pressure relief ports are formed on both sides of the laser cutting head. At the same time, with the rotating dynamic baffle, the dynamic baffle continuously sprays airflow towards the center. Due to the rotation, the generated airflow forms a vortex, and the pressure relief port is in the center position, thus forming a stable airflow channel for airflow collection and discharge, ensuring a smooth exhaust gas recovery process. The screw and nut mechanism drives the movable gantry and the absorption seat to move synchronously, ensuring that the absorption seat is always directly below the processing position to recover the exhaust gas generated under the steel sheet. The top cover can prevent debris from entering the absorption seat.

[0011] Preferably, the bottom of the dynamic partition is ball-jointed with extrusion balls, and distance measuring modules are installed on both sides of the extrusion balls. The top of the connecting arm is fixed with an upward-facing air fan. After the steel sheet is moved to the processing position, it may not be flat and unfolded due to transportation or other reasons, thus affecting the cutting process. During the rotation of the dynamic partition, the distance measuring module can detect the distance from the steel sheet to itself through laser distance measurement or other methods. When abnormal distance data is detected, the driver is controlled to sink, so that the bottom of the dynamic partition is in contact with the steel sheet, and the extrusion balls extrude the surface of the steel sheet. Through high-speed rotation, the steel sheet is continuously vibrated and smoothed, allowing the uneven parts to spread outward, ultimately ensuring the flatness of the steel sheet and ensuring high finished product quality. The air fan can spray air upward, using the reverse thrust to increase the smoothing force of the extrusion balls.

[0012] Preferably, the top surface of the moving arm has an airflow port 1 extending to the bottom surface, and the dynamic partition and the connecting arm have multiple airflow ports 2 on the side near the laser cutting head. An air pump is fixed inside the dynamic partition, and the moving arm continuously sprays airflow downwards to prevent exhaust gas from overflowing from the top. The air pump outputs airflow to the airflow ports 2, thereby creating an inwardly sprayed airflow.

[0013] Preferably, a wind hood is fixed to one side of the dynamic partition. The wind hood has an arc-shaped wind-receiving surface with multiple receiving ports. The wind hood is connected to an air pump and is installed on the rotating side of the dynamic partition. When rotating, the air pump is turned on to draw air from the wind hood. At the same time, the air is also forced into the wind hood during rotation to ensure the supply of high-speed airflow. The arc-shaped wind hood can not only receive more air, but also re-draw in exhaust gas that is about to overflow, further reducing the leakage of exhaust gas.

[0014] Preferably, a recovery tube is installed in the absorption holes at both ends of the laser cutting head. Multiple recovery holes are evenly arranged on the surface of the recovery tube. The recovery tube is inclined to increase the absorption range of the absorption holes and extend the absorption area. At the same time, the upwardly inclined recovery tube will not affect the normal operation of the laser cutting head.

[0015] Preferably, a top counterweight is fixed to the top of the two connecting arms, and a connector is fixed to the middle of the top counterweight. Electric door hinges are installed on both sides of the laser cutting machine. The rotating end of the electric door hinge is connected to a bent charging base. The air fan is fixed to the top counterweight. Since the dynamic partition has a built-in power supply compartment, it cannot continuously supply power when rotating. During the working interval, the dynamic partition is rotated to a designated position, and the electric door hinge rotates the connector to connect the connector and the charging base, thus completing the charging process.

[0016] Preferably, the mobile gantry includes an electric slide rail, the moving end of which is fixedly connected to a lifting slide rail, the moving end of which is fixedly connected to a laser cutting machine, and both ends of the electric slide rail are fixedly connected to a series platform. The laser cutting machine is connected to a drive base through two sets of transmission pipes. The screw and nut mechanism, in conjunction with the structure of the mobile gantry, can control the laser cutting machine to move to any position. At the same time, the transmission of electricity, exhaust gas, and other waste is completed through the transmission pipes.

[0017] The beneficial effects of this invention are as follows: 1. The laser beam cutting device for processing stainless steel fire doors described in this invention effectively reduces the pollution of the working environment by the exhaust gas generated during the cutting process through the setting of dynamic partitions. Some cutting debris will not be ejected outwards, and it will not obstruct the observation of the cutting area from the outside. When the dynamic partitions stop rotating, the enclosed space will be released, which facilitates the formation and release of the enclosed space, reduces costs, and makes operation more convenient.

[0018] 2. The laser beam cutting device for processing stainless steel fire doors described in this invention forms pressure relief ports on both sides of the laser cutting head through the opening of absorption holes. Simultaneously, a rotating dynamic baffle continuously sprays airflow towards the center. Due to the rotation, the generated airflow forms a vortex, and the pressure relief ports are located at the center, thus forming a stable airflow channel for collection and discharge, ensuring a smooth waste gas recovery process. The screw and nut mechanism drives the moving gantry and absorption seat to move synchronously, ensuring that the absorption seat is always directly below the processing position, recovering the waste gas generated below the steel sheet. The top cover can prevent debris from entering the absorption seat. 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 the present invention; Figure 2 This is a perspective view of the drive base and the movable gantry of the present invention; Figure 3 This is a perspective view of the movable gantry and absorption seat of the present invention; Figure 4 This is a perspective view of the laser cutting machine and dynamic partition of the present invention; Figure 5 This is a perspective view of the charging base and dynamic partition of the present invention; Figure 6 This is a perspective view of the driver and dynamic partition of the present invention; Figure 7 This is a perspective view of the dynamic partition and wind shield of the present invention; Figure 8 This is a perspective view of the lifting pile and recovery pipe of the present invention; In the diagram: 1. Drive seat; 2. Transfer trough; 3. Transport roller; 4. Moving gantry; 5. Laser cutting machine; 6. Screw and nut mechanism; 7. Absorption seat; 8. Series platform; 9. Electric slide rail; 10. Lifting slide rail; 11. Transmission pipe; 12. Laser cutting head; 13. Dynamic partition; 14. Top cover; 15. Charging seat; 16. Electric door hinge; 17. Lifting post; 18. Driver; 19. Rotating ring; 20. Moving arm; 21. Air outlet one; 22. Air pump; 23. Wind shield; 24. Connecting arm; 25. Moving platform; 26. Top counterweight platform; 27. Connecting joint; 28. Air fan; 29. ​​Air outlet two; 30. Distance measuring module; 31. Extrusion ball; 32. Recovery pipe; 33. Recovery hole. 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] like Figures 1 to 8 As shown in the embodiment of the present invention, a laser beam cutting device for processing stainless steel fire doors includes a drive base 1. The top of the drive base 1 is provided with a transfer groove 2. Multiple parallel transport rollers 3 are installed in the transfer groove 2. Screw and nut mechanisms 6 are installed on both sides of the drive base 1. A movable gantry 4 is installed between the moving ends of the two screw and nut mechanisms 6. A laser cutting machine 5 is installed at the moving end of the movable gantry 4. A laser cutting head 12 is fixedly connected to the bottom of the laser cutting machine 5. Two dynamic partitions 13 surround the outside of the laser cutting head 12. The dynamic partitions 13 can rotate. An absorption seat 7 that moves synchronously with the movable gantry 4 is provided below the transport rollers 3. Unroll the steel coil to be cut and place its end above the drive seat 1. The steel coil is transported forward by the rotating transport roller 3, or the cut steel sheet is transported directly. When the material is transported to the designated position, the moving gantry 4 moves the laser cutting machine 5 and controls the laser cutting machine 5 to move along a predetermined trajectory so that the laser cutting head 12 can cut the required shape on the surface of the steel sheet. After the cutting is completed, the transport roller 3 drives the cut steel sheet forward. At this time, the cut structure is still left on the steel sheet and needs to be removed later by vibration or other methods. This method facilitates the continuous transport and processing of steel sheets. During the cutting process, the high temperature of the steel sheet generates heavy metal fumes, including hexavalent chromium compounds and volatile organic compounds such as toluene. Long-term inhalation can cause significant physical damage to the operator. Implementing a fully enclosed design on the top surface of the drive seat 1 would be too costly, potentially hindering material handling and obstructing the operator's or monitoring module's observation of the cutting status. By using dynamic partitions 13, during the operation of the laser cutting head 12, two dynamic partitions 13 rotate around the laser cutting head 12, forming a cylindrical area on the outside of the laser cutting head 12. This area is not physically present but is a temporary area created by the rotation of the two dynamic partitions 13. The cutting status can still be directly observed from the outside. Simultaneously, the dynamic partitions 13 can inject compressed air inwards, effectively trapping the exhaust gases generated during cutting within this temporary area, preventing escape. Furthermore, the absorption seat 7 at the bottom has a built-in negative pressure module that generates negative pressure to absorb the exhaust gases. The airflow, unable to escape from the enclosed space above, can only move downwards and is eventually absorbed by the absorption seat 7. The bottom of the dynamic partition 13 does not need to directly contact the steel sheet; a gap can be reserved. Since the dynamic partition 13 sprays airflow towards the laser cutting head 12, due to the Venturi effect, the bottom gap will absorb air from the outside. At the same time, the airflow passes through the cutting gap of the steel sheet and enters the absorption seat 7 downwards, completing the airflow circulation. Alternatively, an airflow outlet can be added to the bottom of the dynamic partition 13, with the airflow sprayed obliquely towards the laser cutting head 12, thereby forming a more enclosed airflow wall to prevent internal airflow from escaping. This setting effectively reduces the pollution of the working environment by the exhaust gas generated during the cutting process, and some cutting debris will not be ejected outwards. At the same time, it will not obstruct the observation of the cutting area from the outside. When the dynamic partition 13 stops rotating, the enclosed space will be released, facilitating the formation and release of the enclosed space, reducing costs, and making operation more convenient.

[0023] A lifting post 17 is fixedly connected to the outer side of the laser cutting head 12 near the top. A driver 18 is fixedly connected to the moving end of the lifting post 17. The rotating end of the driver 18 is a rotating ring 19. The rotating ring 19 is rotatably engaged in the middle of the driver 18. The rotating ring 19 is connected to the dynamic partition 13. During operation, the lifting pile 17 drives the driver 18 to sink, which in turn drives the protective area formed by the dynamic partition 13 to rise and fall. During operation, the bottom of the dynamic partition 13 is infinitely close to the surface of the steel sheet, preventing internal air from escaping. At the same time, in conjunction with the height change of the laser cutting head 12, the dynamic partition 13 is always kept in a safe position. The rotation of the rotating ring 19 drives the rotation of the two dynamic partitions 13, thus completing the formation of the closed area.

[0024] Two symmetrically arranged movable arms 20 are fixedly connected to the outer side of the rotating ring 19. A movable platform 25 is sleeved on the outer side of the movable arm 20. Connecting arms 24 are rotatably connected to both sides of the movable platform 25. A servo motor for driving the connecting arm 24 to rotate is installed on one side of the movable platform 25. The bottom of the two connecting arms 24 is fixedly connected to the dynamic partition 13. During operation, the protection range after rotation can be expanded or reduced by adjusting the position of the movable stage 25 on the movable arm 20. The servo motor can drive the connecting arm 24 to rotate, controlling the tilt angle of the dynamic partition 13 and the connecting arm 24. When the dynamic partition 13 tilts inward, making the protection range a frustum shape that is narrow at the bottom and wide at the top, it can better limit the welding exhaust gas generated at the bottom. When it tilts outward, making it a frustum shape that is narrow at the top and wide at the bottom, it can expand the coverage area of ​​the bottom surface and better adapt to the processing conditions.

[0025] The laser cutting head 12 has absorption holes on both sides. The top cover 14 is fixedly connected to the top of the absorption seat 7. The ball screw and nut mechanism 6 is fixedly connected to the series platform 8. The series platform 8 is fixedly connected to the moving gantry 4 and the absorption seat 7. During operation, due to the small cutting kerf, relying solely on the cutting kerf to remove exhaust gas can easily lead to excessively high air pressure within the enclosed space, causing airflow to overflow. By opening the absorption holes, pressure relief ports are formed on both sides of the laser cutting head 12. Simultaneously, in conjunction with the rotating dynamic baffle 13, the dynamic baffle 13 continuously sprays airflow towards the center. Due to its rotation, the generated airflow forms a vortex, and the pressure relief port is located in the center, thus forming a stable airflow channel for airflow collection and discharge, ensuring a smooth exhaust gas recovery process. The screw and nut mechanism 6 drives the moving gantry 4 and the absorption seat 7 to move synchronously, ensuring that the absorption seat 7 is always directly below the processing position, recovering the exhaust gas generated below the steel sheet. The top cover 14 can prevent debris from entering the absorption seat 7.

[0026] The bottom of the dynamic partition 13 is ball-connected with a compression ball 31, and a ranging module 30 is installed on both sides of the compression ball 31. The top of the connecting arm 24 is fixed with an air fan 28 with the output end facing upward. During operation, after the steel sheet is moved to the processing position, it may not be flat and unfolded due to transportation or other reasons, which will affect the cutting process. During the rotation of the dynamic partition 13, the distance measuring module 30 can detect the distance from the steel sheet to itself through laser distance measurement and other methods. When an abnormal distance data is detected, the driver 18 is controlled to sink, so that the bottom of the dynamic partition 13 is in contact with the steel sheet, and the compression ball 31 compresses the surface of the steel sheet. Through high-speed rotation, the steel sheet is continuously vibrated and smoothed, allowing the uneven parts to spread outward, and finally ensuring the flatness of the steel sheet, thus ensuring high finished product quality. The air fan 28 can spray air upward, using the reverse thrust to increase the smoothing force of the compression ball 31.

[0027] The top surface of the moving arm 20 is provided with an airflow port 21 that extends to the bottom surface. The dynamic partition 13 and the connecting arm 24 are provided with multiple airflow ports 29 on the side near the laser cutting head 12. An air pump 22 is fixedly connected inside the dynamic partition 13. During operation, the moving arm 20 continuously sprays air downwards to prevent exhaust gas from overflowing from the top, and the air pump 22 outputs airflow to the airflow port 29, thereby creating an inwardly sprayed airflow.

[0028] A wind-receiving hood 23 is fixedly connected to one side of the dynamic partition 13. The wind-receiving surface of the wind-receiving hood 23 is arc-shaped and has multiple receiving ports. The wind-receiving hood 23 is connected to the air pump 22. During operation, the air receiver 23 is installed on the rotating side of the dynamic baffle 13. When rotating, the air pump 22 is turned on to draw air from the air receiver 23. At the same time, the air is also forced into the air receiver 23 during rotation to ensure the supply of high-speed airflow. The arc-shaped air receiver 23 can not only receive more air, but also the exhaust gas that is about to overflow will be re-drawn in by the arc surface, further reducing the leakage of exhaust gas.

[0029] A recovery tube 32 is installed in the absorption holes at both ends of the laser cutting head 12. Multiple recovery holes 33 are arranged at equal intervals on the surface of the recovery tube 32. The recovery tube 32 is inclined. During operation, in order to increase the absorption range of the absorption hole, the absorption area is extended by the recovery tube 32. At the same time, the upward tilted recovery tube 32 will not affect the normal operation of the laser cutting head 12.

[0030] A top counterweight 26 is fixed to the top of the two connecting arms 24, and a butt joint 27 is fixed to the middle of the top counterweight 26. Electric door hinges 16 are installed on both sides of the laser cutting machine 5. The rotating end of the electric door hinge 16 is connected to a bent charging base 15. The air fan 28 is fixed to the top counterweight 26. During operation, since the dynamic partition 13 has a built-in power supply compartment, it cannot continuously supply power when rotating. During the working interval, the dynamic partition 13 is rotated to the designated position, and the electric door shaft 16 rotates the connector 27 to connect the connector 27 and the charging base 15 to complete the charging process.

[0031] The mobile gantry 4 includes an electric slide rail 9, the moving end of which is fixedly connected to a lifting slide rail 10, the moving end of which is fixedly connected to a laser cutting machine 5, and both ends of the electric slide rail 9 are fixedly connected to a series platform 8. The laser cutting machine 5 is connected to the drive base 1 through two sets of transmission pipes 11. During operation, the screw and nut mechanism 6, in conjunction with the moving gantry 4, can control the laser cutting machine 5 to move to any position. At the same time, the transmission of electricity, exhaust gas, and other materials is completed through the transmission pipe 11.

[0032] During operation, the steel coil to be cut is unrolled and its end is placed above the drive seat 1. The steel coil is transported forward by the rotating transport roller 3, or the cut steel sheet is transported directly. When the material is transported to the designated position, the moving gantry 4 moves the laser cutting machine 5 and controls the laser cutting machine 5 to move along a predetermined trajectory, so that the laser cutting head 12 can cut the required shape on the surface of the steel sheet. After the cutting is completed, the transport roller 3 drives the cut steel sheet forward. At this time, the cut structure is still left on the steel sheet and needs to be removed later by vibration or other methods. This method facilitates the continuous transport and processing of steel sheets. During the cutting process, the high temperature of the steel sheet generates heavy metal fumes, including hexavalent chromium compounds and volatile organic compounds such as toluene. Long-term inhalation can cause significant physical damage to the operator. Implementing a fully enclosed design on the top surface of the drive seat 1 would be too costly, potentially hindering material handling and obstructing the operator's or monitoring module's observation of the cutting status. By using dynamic partitions 13, during the operation of the laser cutting head 12, two dynamic partitions 13 rotate around the laser cutting head 12, forming a cylindrical area on the outside of the laser cutting head 12. This area is not physically present but is a temporary area created by the rotation of the two dynamic partitions 13. The cutting status can still be directly observed from the outside. Simultaneously, the dynamic partitions 13 can inject compressed air inwards, effectively trapping the exhaust gases generated during cutting within this temporary area, preventing escape. Furthermore, the absorption seat 7 at the bottom has a built-in negative pressure module that generates negative pressure to absorb the exhaust gases. The airflow, unable to escape from the enclosed space above, can only move downwards and is eventually absorbed by the absorption seat 7. The bottom of the dynamic partition 13 does not need to directly contact the steel sheet; a gap can be reserved. Since the dynamic partition 13 sprays airflow towards the laser cutting head 12, due to the Venturi effect, the bottom gap will absorb air from the outside. At the same time, the airflow passes through the cutting gap of the steel sheet and enters the absorption seat 7 downwards, completing the airflow circulation. Alternatively, an airflow outlet can be added to the bottom of the dynamic partition 13, with the airflow sprayed obliquely towards the laser cutting head 12, thereby forming a more enclosed airflow wall to prevent internal airflow from escaping. This setting effectively reduces the pollution of the working environment by the exhaust gas generated during the cutting process, and some cutting debris will not be ejected outwards. At the same time, it will not obstruct the observation of the cutting area from the outside. When the dynamic partition 13 stops rotating, the enclosed space will be released, facilitating the formation and release of the enclosed space, reducing costs, and making operation more convenient.

[0033] The lifting pile 17 drives the driver 18 to sink, which in turn drives the protective area formed by the dynamic partition 13 to rise and fall. During the operation, the bottom of the dynamic partition 13 is infinitely close to the surface of the steel sheet, preventing the internal air from escaping. At the same time, in conjunction with the height change of the laser cutting head 12, the safe position of the dynamic partition 13 is always maintained. The rotation of the rotating ring 19 drives the rotation of the two dynamic partitions 13, thus completing the formation of the closed area.

[0034] By adjusting the position of the movable stage 25 on the movable arm 20, the protection range after rotation can be expanded or reduced. The servo motor can drive the connecting arm 24 to rotate, controlling the tilt angle of the dynamic partition 13 and the connecting arm 24. When the dynamic partition 13 tilts inward, making the protection range a frustum shape that is narrow at the bottom and wide at the top, it can better limit the welding exhaust gas generated at the bottom. When it tilts outward, making it a frustum shape that is narrow at the top and wide at the bottom, it can expand the coverage area of ​​the bottom surface and better adapt to the processing conditions.

[0035] Because the cutting kerf is small, relying solely on the kerf to remove the exhaust gas can easily lead to excessively high air pressure in the enclosed space, causing the airflow to overflow. By opening the absorption holes, pressure relief ports are formed on both sides of the laser cutting head 12. Simultaneously, the rotating dynamic baffle 13 continuously sprays airflow towards the center. Due to its rotation, the generated airflow forms a vortex, and the pressure relief port is located in the center, thus forming a stable airflow channel for airflow collection and discharge, ensuring a smooth exhaust gas recovery process. The screw and nut mechanism 6 drives the moving gantry 4 and the absorption seat 7 to move synchronously, ensuring that the absorption seat 7 is always directly below the processing position, recovering the exhaust gas generated below the steel sheet. The top cover 14 can prevent debris from entering the absorption seat 7.

[0036] After the steel sheet is moved to the processing position, it may not be flat and unfolded due to transportation or other reasons, which will affect the cutting process. During the rotation of the dynamic partition 13, the distance measuring module 30 can detect the distance from the steel sheet to itself through laser distance measurement and other methods. When an abnormal distance data is detected, the driver 18 is controlled to sink, so that the bottom of the dynamic partition 13 is in contact with the steel sheet. The compression ball 31 compresses the surface of the steel sheet. Through high-speed rotation, the steel sheet is continuously vibrated and smoothed, allowing the uneven parts to spread outward, and finally ensuring the flatness of the steel sheet, thus ensuring high finished product quality. The air fan 28 can spray air upward, using the reverse thrust to increase the smoothing force of the compression ball 31.

[0037] The movable arm 20 continuously sprays air downwards to prevent exhaust gas from overflowing from the top, and the air pump 22 outputs airflow to the airflow port 29, thereby creating an inwardly sprayed airflow.

[0038] The air receiver 23 is installed on the rotating side of the dynamic baffle 13. When rotating, the air pump 22 is turned on to draw air from the air receiver 23. At the same time, the air is also forced into the air receiver 23 during rotation to ensure the supply of high-speed airflow. The arc-shaped air receiver 23 can not only receive more air, but also the exhaust gas that is about to overflow will be re-drawn in by the arc surface, further reducing the leakage of exhaust gas.

[0039] In order to increase the absorption range of the absorption hole, the absorption area is extended by the recovery tube 32, and the upward tilted recovery tube 32 will not affect the normal operation of the laser cutting head 12.

[0040] Since the dynamic partition 13 has a built-in power supply compartment, it cannot provide continuous power when rotating. During the working interval, the dynamic partition 13 is rotated to the designated position, and the electric door shaft 16 rotates the connector 27 to connect the connector 27 and the charging base 15 to complete the charging process.

[0041] The screw and nut mechanism 6, in conjunction with the moving gantry 4, can control the laser cutting machine 5 to move to any position. At the same time, the transmission of electricity, exhaust gas, and other materials is completed through the transmission pipe 11.

[0042] 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 beam cutting device for processing stainless steel fire doors, characterized in that: The device includes a drive base with a transfer groove on its top. Multiple parallel conveyor rollers are installed in the transfer groove. Screw and nut mechanisms are installed on both sides of the drive base. A movable gantry is installed between the moving ends of two screw and nut mechanisms. A laser cutting machine is installed at the moving end of the movable gantry. A laser cutting head is fixed to the bottom of the laser cutting machine. Two dynamic partitions surround the outside of the laser cutting head. The dynamic partitions are rotatable. An absorption seat that moves synchronously with the movable gantry is provided below the conveyor rollers.

2. The laser beam cutting device for processing stainless steel fire doors according to claim 1, characterized in that: A lifting post is fixed to the top of the outer side of the laser cutting head. A driver is fixed to the moving end of the lifting post. The rotating end of the driver is a rotating ring. The rotating ring is rotatably engaged in the middle of the driver. The rotating ring is connected to a dynamic partition.

3. The laser beam cutting device for processing stainless steel fire doors according to claim 2, characterized in that: Two symmetrically arranged movable arms are fixedly connected to the outer side of the rotating ring. A movable platform is sleeved on the outer side of each movable arm. Connecting arms are rotatably connected to both sides of the movable platform. A servo motor for driving the connecting arms to rotate is installed on one side of the movable platform. The bottom of the two connecting arms is fixedly connected to a dynamic partition.

4. The laser beam cutting device for processing stainless steel fire doors according to claim 3, characterized in that: The laser cutting head has absorption holes on both sides, and a top cover is fixedly connected to the top of the absorption seat. The moving screw and nut mechanism is fixedly connected to a series platform, which is fixedly connected to the moving gantry and the absorption seat.

5. The laser beam cutting device for processing stainless steel fire doors according to claim 4, characterized in that: The bottom of the dynamic partition is ball-jointed with a compression ball, and a ranging module is installed on both sides of the compression ball. The top of the connecting arm is fixed with an air fan with the output end facing upward.

6. The laser beam cutting device for processing stainless steel fire doors according to claim 5, characterized in that: The top surface of the moving arm has an airflow port 1 that extends to the bottom surface, and the dynamic partition and the connecting arm have multiple airflow ports 2 on the side near the laser cutting head. An air pump is fixed inside the dynamic partition.

7. The laser beam cutting device for processing stainless steel fire doors according to claim 6, characterized in that: A wind shroud is fixed to one side of the dynamic partition. The wind shroud has an arc-shaped wind-receiving surface and multiple receiving ports. The wind shroud is connected to an air pump.

8. The laser beam cutting device for processing stainless steel fire doors according to claim 7, characterized in that: A recovery tube is installed in the absorption holes at both ends of the laser cutting head. Multiple recovery holes are arranged at equal intervals on the surface of the recovery tube, and the recovery tube is set at an angle.

9. The laser beam cutting device for processing stainless steel fire doors according to claim 8, characterized in that: A top counterweight is fixed to the top of each of the two connecting arms, and a connecting joint is fixed to the middle of the top counterweight. Electric door hinges are installed on both sides of the laser cutting machine. A bent charging base is connected to the rotating end of the electric door hinge. The air fan is fixed to the top counterweight.

10. A laser beam cutting device for processing stainless steel fire doors according to claim 9, characterized in that: The mobile gantry includes an electric slide rail, the moving end of which is fixedly connected to a lifting slide rail, the moving end of which is fixedly connected to a laser cutting machine, and both ends of the electric slide rail are fixedly connected to a series platform. The laser cutting machine is connected to a drive base through two sets of transmission pipes.

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