Profile laser cutting device and cutting method for steel structure production

Abstract

The invention belongs to the technical field of laser cutting, and particularly relates to a profile laser cutting device for steel structure production and a cutting method.The profile laser cutting device comprises a machine tool, a connector and a pair of guide rails, the guide rails are arranged on the machine tool, the connector can move on the guide rails in the Y-axis direction, and a mounting plate capable of moving in the X-axis direction is arranged on the connector; a laser cutting head is fixedly mounted on the mounting plate; the side wall of the laser cutting head is fixedly connected with a hollow ring; suction force is generated by means of an aspirator pump, suction force is generated by an air inlet hole, gas passes through a hollow ring, a first connecting pipe and a connecting ring, when the gas passes through the connecting ring, particle impurities in the gas are filtered by a filter screen, then the gas enters a connecting box, the gas is purified by activated carbon and then discharged, and harmful gas is prevented from damaging the health of workers.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser cutting, in particular to a profile laser cutting device and a cutting method for steel structure production. Background Art

[0002] In the modern steel structure production and manufacturing process, laser cutting technology has become an indispensable key process link. Compared with traditional mechanical cutting methods, laser cutting machines are widely used in the processing and production of various steel structures due to their significant advantages such as high precision, high efficiency and high flexibility.

[0003] Laser cutting machines use high-energy-density laser beams to precisely cut steel, which not only enables rapid prototyping of complex shapes, but also ensures smooth cuts, significantly improving product quality and production efficiency. Currently, laser cutting technology has been widely used in the production and manufacturing of building steel structures, bridge components, mechanical equipment and other fields.

[0004] The high temperature generated when laser cutting on the surface of steel will cause the metal material to vaporize, thereby inevitably releasing a variety of harmful gases and metal smoke. These pollutants mainly include carbon monoxide, nitrogen oxides, metal oxide particles and ozone. If the production site is poorly ventilated or protective measures are not in place, operators exposed to such an environment for a long time may suffer varying degrees of health damage to the respiratory system, nervous system, etc. For this reason, the present invention provides a profile laser cutting device and cutting method for steel structure production. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the present invention describes a profile laser cutting device for steel structure production, comprising a machine tool, a connector and a pair of guide rails, wherein the pair of guide rails are arranged on the machine tool, the connector can move in the Y-axis on the guide rails, the connector is provided with a mounting plate movable in the X-axis, and a laser cutting head is fixedly installed on the mounting plate; the side wall of the laser cutting head is fixedly connected to a hollow ring, and the bottom surface of the hollow ring is provided with a group of annularly uniformly distributed air inlet holes; the side wall of the hollow ring is connected to a first connecting pipe, and the inner wall of the hollow ring is fixedly connected to a filter screen; the end of the first connecting pipe away from the hollow ring is connected to a hollow connecting ring, the end of the connecting ring away from the first connecting pipe is connected to a second connecting pipe, and the end of the second connecting pipe away from the first connecting pipe is provided with an air suction component and a purification component.

[0007] Preferably, the purification component includes a connecting box connected to the second connecting pipe, granular activated carbon is arranged in the connecting box, and the air intake component includes a third connecting pipe, which is connected to the side of the connecting box away from the second connecting pipe, and an air intake pump can be installed on the end of the third connecting pipe away from the connecting box.

[0008] Preferably, a rotating ring is provided at the center of the filter screen, a round rod is movably connected to the inner wall of the rotating ring, a fixed plate is fixedly connected to the outer wall of the round rod, a group of bristles is fixedly connected to the side of the fixed plate close to the filter screen, and the bristles can clean impurities on the filter screen, and a motor for driving the round rod to rotate is provided in the hollow ring.

[0009] Preferably, the inner wall of the connecting box is rotatably connected to a connecting shaft, the outer side wall of the connecting shaft is fixedly connected to multiple groups of stirring blades, the stirring blades are used to stir the activated carbon, and a connecting mechanism is provided between the connecting shaft and the round rod.

[0010] Preferably, the connecting mechanism includes a first connecting rod fixedly connected to the output end of the motor, the first connecting rod is fixedly connected to a connecting column at one end away from the motor, the connecting column is open at one end away from the first connecting rod, the round rod is slidably connected to the open end of the connecting column, the inner wall of the connecting column is fixedly connected to an electromagnet, the round rod is fixedly connected to a magnetic ring that repels the electromagnet at one end close to the first connecting rod, and a first spring is fixedly connected between the side of the round rod close to the magnetic ring and the inner wall of the connecting column, the connecting shaft is fixedly connected to a second connecting rod at one end close to the round rod, a circular groove is provided at one end of the second connecting rod away from the connecting shaft, the round rod is slidably connected to the inner wall of the circular groove, a group of clamping grooves are provided on the inner wall of the circular groove, and the end of the round rod close to the second connecting rod is fixedly connected to a group of clamping rods that are clamped with the clamping grooves.

[0011] Preferably, the interior of the fixed plate is a hollow structure, and a group of air outlet holes are provided on the side of the fixed plate close to the bristles. The interior of the round rod is a hollow structure, and a first through hole that is interconnected is provided between the round rod and the fixed plate, the interior of the connecting shaft is a hollow structure, and the second connecting rod is provided with a first air guide groove connected to the interior of the connecting shaft at one end away from the round rod, and a second through hole connected to the circular groove is provided at one end of the round rod close to the connecting shaft, a through groove connected to the first air guide groove and the circular groove is provided in the second connecting rod, a second air guide groove is provided at one end of the connecting shaft away from the second connecting rod, a third air guide groove connected to the third connecting pipe is provided in the connecting box, and the third air guide groove is connected to the second air guide groove at one end away from the third connecting pipe, the round rod and the inner wall of the circular groove are sealed and movably connected, and a sealing component for sealing the third connecting pipe is provided in the connecting box.

[0012] Preferably, the sealing mechanism includes a fixing ring fixedly connected to the inner wall of the second connecting tube, the fixing ring is set with an opening on the side away from the connecting shaft, the inner wall of the fixing ring is sealingly and slidingly connected with a slip ring, a group of second springs are fixedly connected between the side of the slip ring close to the connecting shaft and the inner wall of the fixing ring, a conduit is connected inside the fixing ring, the side wall of the round rod is fixedly connected with a push rod for pushing the slip ring, the inner wall of the connecting box is fixedly connected with a rectangular plate covering the third connecting tube, the top end of the rectangular plate is set with an opening, the inner wall of the rectangular plate is sealingly and slidingly connected with a sealing plate, a group of first through holes are opened on both sides of the rectangular plate, a group of second through holes connected with the first through holes are opened on the sealing plate, the end of the conduit away from the fixing ring is connected to the inside of the rectangular plate, a third spring is fixedly connected between the bottom surface of the sealing plate and the inner wall of the rectangular plate, and a first one-way valve is set in the connecting shaft.

[0013] Preferably, the inner wall of the hollow ring is slidably connected to a circular ring, the bottom surface of the circular ring is fixedly connected to a group of dredging rods corresponding to the suction holes, the surface of the dredging rods is fixedly connected to a sealing ring that seals the suction holes, the top of the hollow ring is connected to an air outlet pipe, and a second one-way valve is provided in the air outlet pipe.

[0014] A method for laser cutting profiles for steel structure production, the method using the laser cutting device for steel structure production as claimed in claim 8, the method comprising the following steps: S1: Prepare the steel and check whether there is oil stain and rust on the surface of the steel. If there is any oil stain and rust, treat them before proceeding with subsequent cutting. At the same time, ensure that the steel is flat and without warping. S2: Multiple steels are placed on the machine tool at the same time and aligned. The laser power emitted by the laser cutting head is set according to the material of the steel. The laser cutting head is moved with the help of the guide rail and connector to cut the steel. S3: When the steel is being cut, the air in the connection box is sucked by the suction pump, so that suction is generated at the suction hole, thereby sucking the harmful gases generated during the cutting process into the connection box and being purified by activated carbon. The particulate impurities will be filtered out by the filter first; S4: Start the electromagnet to push the magnetic ring, so that the magnetic ring pushes the round rod to move. At this time, the round rod drives the fixed plate to move to one side of the filter, so that the bristles come into contact with the filter. Then, the motor drives the bristles to rotate, so that the bristles can brush away the impurities on the filter. S5: Remove the suction pump on the third connecting pipe, then install the inflation pump on the third connecting pipe, and let the inflation pump fill the third connecting pipe with gas. At this time, the gas will be backflushed through the filter, and the cleaned impurities will be discharged from the outlet pipe through the gas.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention generates suction through the use of an air pump, so that the air inlet generates suction. The gas will pass through the hollow ring, the first connecting pipe, and the connecting ring. When passing through the connecting ring, the particulate impurities in the gas will be filtered by the filter net, and then the gas will enter the connecting box, so that the gas will be purified by activated carbon before being discharged, preventing harmful gases from causing health damage to workers.

[0016] 2. The present invention can use a motor to drive the round rod to rotate, so that the round rod drives the fixed plate to rotate, so that the bristles can sweep and clean the impurities on the filter screen. At the same time, the suction pump on the third connecting pipe can be removed, and then the air pump can be installed on the third connecting pipe. The air pump is allowed to fill the third connecting pipe with gas. At this time, the gas will be backblown through the filter screen, thereby taking away the swept impurities and finally discharged from the suction hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is a perspective view of the laser cutting device of the present invention; Figure 2 It is a structural diagram of the laser cutting head, connecting ring, hollow ring and connecting box in the present invention; Figure 3 It is a schematic diagram of the internal structure of the hollow ring, connecting ring and connecting box in the present invention; Figure 4 yes Figure 3 Schematic diagram of part of the structure; Figure 5 yes Figure 3 A magnified view of point A; Figure 6 is a cross-sectional view of the hollow ring of the present invention; Figure 7 It is a flow chart of the method in the present invention.

[0019] In the figure: 1. Machine tool; 2. Guide rail; 3. Connector; 4. Mounting plate; 5. Laser cutting head; 6. Hollow ring; 7. First connecting pipe; 8. Connecting ring; 9. Second connecting pipe; 10. Connecting box; 11. Third connecting pipe; 12. Fixing plate; 13. First connecting rod; 14. Magnetic ring; 15. Connecting column; 16. Electromagnet; 17. Motor; 18. Connecting shaft; 19. Stirring blade; 20. Second connecting Rod; 21. Slot; 22. Fixing ring; 23. Slip ring; 24. First air guide groove; 25. Slot; 26. Air outlet; 27. Push rod; 28. Conduit; 29. ​​Through groove; 30. Sealing plate; 31. Rectangular plate; 32. First one-way valve; 33. Second air guide groove; 34. Third air guide groove; 35. Rotating ring; 36. Clearing rod; 37. Sealing ring; 38. Circular ring; 39. Round rod; 40. Air outlet pipe. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] Example 1: Figures 1 to 5 As shown, a profile laser cutting device for steel structure production described in an embodiment of the present invention includes a machine tool 1, a connector 3 and a pair of guide rails 2, wherein the pair of guide rails 2 are arranged on the machine tool 1, the connector 3 can move in the Y-axis on the guide rails 2, and the connector 3 is provided with a mounting plate 4 that can move in the X-axis, and a laser cutting head 5 is fixedly mounted on the mounting plate 4; the side wall of the laser cutting head 5 is fixedly connected to a hollow ring 6, and the bottom surface of the hollow ring 6 is provided with a group of annularly uniformly distributed air inlet holes; the side wall of the hollow ring 6 is connected to a first connecting pipe 7, and the inner wall of the hollow ring 6 is fixedly connected to a filter screen; the end of the first connecting pipe 7 away from the hollow ring 6 is connected to a hollow connecting ring 8, the end of the connecting ring 8 away from the first connecting pipe 7 is connected to a second connecting pipe 9, and the end of the second connecting pipe 9 away from the first connecting pipe 7 is provided with an air suction component and a purification component; The present application places the steel materials to be cut side by side on the machine tool 1, and then moves the laser cutting head 5 with the help of the cooperation of the guide rail 2 and the connector 3, so that the laser cutting head 5 emits a laser to cut the steel materials. During cutting, suction is generated by the suction component, and suction is generated in the air inlet. The gas passes through the hollow ring 6, the first connecting pipe 7, and the connecting ring 8. When passing through the connecting ring 8, the particulate impurities in the gas will be filtered by the filter net, and then the gas enters the purification component from the second connecting pipe 9, so that the gas is purified by the purification component before being discharged, thereby achieving the effect of purifying the harmful gas before discharging, preventing the harmful gas from causing health damage to the staff.

[0022] The purification component includes a connection box 10 connected to the second connection pipe 9, and granular activated carbon is arranged in the connection box 10. The air intake component includes a third connection pipe 11, and the third connection pipe 11 is connected to the side of the connection box 10 away from the second connection pipe 9. An air intake pump can be installed on the end of the third connection pipe 11 away from the connection box 10; the present application uses an air intake pump to suck the gas, so that the air intake hole sucks in the harmful gas, and the harmful gas will pass through the connection box 10. At this time, the activated carbon can adsorb the harmful substances in the harmful gas, and then discharge it after the adsorption is completed, thereby achieving the effect of treating the harmful gas.

[0023] The central part of the filter is provided with a rotating ring 35, and the inner wall of the rotating ring 35 is movably connected to a round rod 39. The outer wall of the round rod 39 is fixedly connected to a fixed plate 12. A group of bristles are fixedly connected to the side of the fixed plate 12 close to the filter, and the bristles can clean the impurities on the filter. A motor 17 is provided in the hollow ring 6 to drive the round rod 39 to rotate; the filter in the present application is easily clogged with granular impurities after long-term use. At this time, the round rod 39 can be driven by the motor 17 to rotate, so that the round rod 39 drives the fixed plate 12 to rotate, thereby allowing the bristles to sweep and clean the impurities on the filter. At the same time, the suction pump on the third connecting pipe 11 can be removed, and then the air pump can be installed on the third connecting pipe 11, so that the air pump can fill the third connecting pipe 11 with gas. At this time, the gas will be backblown through the filter, thereby taking away the swept impurities and finally discharged from the suction hole. The above mechanism achieves the effect of cleaning the filter, thereby ensuring the use effect of the filter.

[0024] The inner wall of the connecting box 10 is rotatably connected to a connecting shaft 18, and the outer side wall of the connecting shaft 18 is fixedly connected to multiple groups of stirring blades 19, and the stirring blades 19 are used to stir the activated carbon. A connecting mechanism is provided between the connecting shaft 18 and the round rod 39; when the present application uses activated carbon to treat harmful gases, the round rod 39 can be connected to the connecting shaft 18 with the help of the connecting mechanism. At this time, the round rod 39 can be driven to rotate by the motor 17, thereby driving the connecting shaft 18 to rotate, so that the stirring blades 19 can stir the activated carbon, reduce the gas diffusion resistance, and make the gas molecules more easily contact the pore structure of the activated carbon, thereby improving the adsorption rate and capacity, and improving the effect of treating harmful gases.

[0025] The connecting mechanism includes a first connecting rod 13 fixedly connected to the output end of the motor 17, the end of the first connecting rod 13 away from the motor 17 is fixedly connected to the connecting column 15, the end of the connecting column 15 away from the first connecting rod 13 is open, the round rod 39 is slidably connected to the open end of the connecting column 15, the inner wall of the connecting column 15 is fixedly connected to the electromagnet 16, the end of the round rod 39 close to the first connecting rod 13 is fixedly connected to the magnetic ring 14 that repels the electromagnet 16, and a first spring is fixedly connected between the side of the round rod 39 close to the magnetic ring 14 and the inner wall of the connecting column 15, the end of the connecting shaft 18 close to the round rod 39 is fixedly connected to the second connecting rod 20, the end of the second connecting rod 20 away from the connecting shaft 18 is provided with a circular groove, the round rod 39 is slidably connected to the inner wall of the circular groove, the inner wall of the circular groove is provided with a group of clamping grooves 21, and the end of the round rod 39 close to the second connecting rod 20 is fixedly connected to a group of clamping rods 25 clamped with the clamping grooves 21; When the present application needs to stir the activated carbon with the help of the stirring blade 19, the circular shaft and the second connecting rod 20 can be connected by means of the card slot 21 and the card rod 25. At this time, the connecting column 15 can be driven by the motor 17 to rotate. At this time, the connecting column 15 will drive the circular rod 39 to rotate, thereby driving the second connecting rod 20 and the connecting shaft 18 to rotate, so that the stirring blade 19 can stir the activated carbon. When the filter needs to be cleaned, in order to prevent the bristles from being in contact with the filter for a long time and rotating for cleaning, causing unnecessary loss, the electromagnet 1 can be started when the filter needs to be cleaned. 6 pushes the magnetic ring 14, so that the magnetic ring 14 pushes the round rod 39 to move. At this time, the round rod 39 will drive the fixed plate 12 to move to one side of the filter, so that the bristles will contact the filter. During this process, the clamping rod 25 is always in a state of being clamped with the clamping groove 21. Then, when the round rod 39 rotates, the bristles can clean the filter. After cleaning, turn off the electromagnet 16. At this time, the first spring will pull the round rod 39 to slide in the connecting column 15 to reset, so that the bristles will stay away from the filter. At this time, when the motor 17 drives the stirring blade 19 to rotate normally, the bristles will not contact the filter.

[0026] The interior of the fixed plate 12 is a hollow structure, and a group of air outlet holes 26 are opened on the side of the fixed plate 12 close to the bristles. The interior of the round rod 39 is a hollow structure, and a first through hole that is interconnected is opened between the round rod 39 and the fixed plate 12. The interior of the connecting shaft 18 is a hollow structure, and the end of the second connecting rod 20 away from the round rod 39 is provided with a first air guide groove 24 that is connected to the interior of the connecting shaft 18. The end of the round rod 39 close to the connecting shaft 18 is provided with a second through hole that is connected to the round groove. A through groove 29 is defined in the second connecting rod 20 and is connected to the first air guide groove 24 and the circular groove. A second air guide groove 33 is defined at the end of the connecting shaft 18 away from the second connecting rod 20. A third air guide groove 34 is defined in the connecting box 10 and is connected to the third connecting tube 11. The end of the third air guide groove 34 away from the third connecting tube 11 is connected to the second air guide groove 33. The circular rod 39 is in sealed and movable connection with the inner wall of the circular groove. A sealing assembly for sealing the third connecting tube 11 is provided in the connecting box 10. After the external air pump cleans the filter screen, the third connecting tube 11 in the present application can be sealed with the help of a sealing assembly at one end of the third connecting tube 11 close to the connecting box 10, and then the air pump is used to continue to inject gas into the third connecting tube 11. At this time, the gas will pass through the third air guide groove 34, the second air guide groove 33, the inside of the second connecting shaft 18, the first air guide groove 24, the circular groove, and the inside of the round rod 39, and finally enter the fixed plate 12 and be blown out from the air outlet 26, so that the gas can be blown directly onto the filter screen at a close distance to further clean the filter screen.

[0027] The sealing mechanism includes a fixing ring 22 fixedly connected to the inner wall of the second connecting pipe 9, the fixing ring 22 is set at an opening on one side away from the connecting shaft 18, the inner wall of the fixing ring 22 is sealingly and slidingly connected with a slip ring 23, a group of second springs are fixedly connected between the side of the slip ring 23 close to the connecting shaft 18 and the inner wall of the fixing ring 22, a conduit 28 is connected to the fixing ring 22, the side wall of the round rod 39 is fixedly connected to a push rod 27 for pushing the slip ring 23, and the inner wall of the connecting box 10 is fixedly connected to a cover on the third connecting The rectangular plate 31 on the pipe 11 has an open top, and a sealing plate 30 is sealingly and slidably connected to the inner wall of the rectangular plate 31. A group of first through holes are formed on both sides of the rectangular plate 31, and a group of second through holes are formed on the sealing plate 30 that communicate with the first through holes. The end of the conduit 28 away from the fixing ring 22 is in communication with the interior of the rectangular plate 31. A third spring is fixedly connected between the bottom surface of the sealing plate 30 and the inner wall of the rectangular plate 31. A first one-way valve 32 is provided in the connecting shaft 18. When the electromagnet 16 in the present application is started, it will push the round rod 39 to move, so that the bristles will contact the filter screen, and at the same time the push rod 27 will be driven to push the slip ring 23. At this time, the slip ring 23 will push the gas in the fixed ring 22 to be discharged from the conduit 28. At this time, the gas will enter the rectangular plate 31. At this time, the sealing plate 30 will be pushed, so that the first through hole and the second through hole are misaligned. At this time, when the air pump injects gas into the third connecting pipe 11, the gas will finally enter the fixed plate 12 and then be sprayed onto the filter screen from the air outlet 26. When the conduit 28 is set, it will avoid the gas in the connection box 10. The stirring blade 19 is set, and when the electromagnet 16 is closed, the sealing plate 30 will be reset under the pull of the third spring, so that the first through hole is aligned with the second through hole, and the round rod 39 is also reset. Then gas is injected into the third connection again to carry away the impurity airflow cleaned from the filter screen and discharge it from the air inlet. After that, an external vacuum pump can be connected to the third connecting pipe 11 to suck the external harmful gas into the connecting box 10 for treatment. The first one-way valve 32 can allow the gas to flow to the side close to the second connecting rod 20 to prevent some gas from being unable to pass through the connecting box 10 when being sucked.

[0028] Example 2: Figure 6 As shown, in contrast to Example 1, another embodiment of the present invention is that: the inner wall of the hollow ring 6 is slidably connected with a circular ring 38, and the bottom surface of the circular ring 38 is fixedly connected to a group of dredging rods 36 corresponding to the suction holes, and the surface of the dredging rods 36 is fixedly connected to a sealing ring 37 for sealing the suction holes, and the top of the hollow ring 6 is connected to an air outlet pipe 40, and a second one-way valve is provided in the air outlet pipe 40; the second one-way valve is an air outlet one-way valve. When the suction pump in this application is inhaling, the gas will suck the circular ring 38, so that the circular ring 38 drives the dredging rod 36 to move upward. When the suction stops, the circular ring 38 will slide downward due to gravity. At this time, the dredging rod 36 will be inserted into the suction hole, thereby dredging the suction hole to prevent the suction hole from being blocked by impurities after long-term use. When the air pump injects gas into the connection box 10, the gas will drive the impurities to be discharged from the air outlet pipe 40.

[0029] like Figure 7 As shown, a method for laser cutting profiles for steel structure production is provided, wherein the method adopts the laser cutting device for steel structure production as described in claim 8, and the method comprises the following steps: S1: Prepare the steel and check whether there is oil stain and rust on the surface of the steel. If there is any oil stain and rust, treat them before proceeding with subsequent cutting. At the same time, ensure that the steel is flat and without warping. S2: by placing a plurality of steel materials on the machine tool 1 at the same time, and adjusting the alignment of the steel materials, then setting the laser power emitted by the laser cutting head 5 according to the material of the steel material, and moving the laser cutting head 5 by means of the cooperation of the guide rail 2 and the connector 3, so as to cut the steel material; S3: among the cut steel materials, the connecting box 10 is suctioned by the suction pump, so that the suction hole generates suction force, so as to suck the harmful gas generated in the cutting process into the connecting box 10, which is purified by activated carbon, and the particulate impurities are filtered by the filter screen first; S4: the electromagnet 16 drives the magnetic ring 14 to move, so that the magnetic ring 14 drives the circular rod 39 to move, and at this time the circular rod 39 drives the fixed plate 12 to move to one side of the filter screen, so that the bristles contact the filter screen, and then the bristles are driven to rotate by the motor 17, so that the bristles brush off the impurities on the filter screen; S5: by removing the suction pump on the third connecting pipe 11, and then installing the air pump on the third connecting pipe 11, the air pump fills the third connecting pipe 11 with gas, and at this time the gas is blown back through the filter screen, and the impurities cleaned are driven out of the air outlet pipe 40 by the gas.

[0030] Working principle: by placing the steel materials to be cut side by side on the machine tool 1, then moving the laser cutting head 5 by means of the cooperation of the guide rail 2 and the connector 3, so that the laser cutting head 5 emits laser to cut the steel material, and in the cutting process, the suction force is generated by the suction assembly, so that the suction hole generates suction force, and the gas passes through the hollow ring 6, the first connecting pipe 7, the connecting ring 8, and the particulate impurities in the gas are filtered by the filter screen when passing through the connecting ring 8, and then the gas enters the purification assembly from the second connecting pipe 9, so that the gas is purified by the purification assembly and then discharged, achieving the effect of purifying the harmful gas before discharging, preventing the harmful gas from causing health damage to the workers; the application drives the gas by the suction pump, so that the suction hole sucks the harmful gas, and the harmful gas passes through the connecting box 10, and the activated carbon can adsorb the harmful substances in the harmful gas, and then discharge after adsorption, so as to achieve the effect of treating the harmful gas; The filter in the present application is easily clogged with granular impurities after long-term use. At this time, the motor 17 can be used to drive the round rod 39 to rotate, so that the round rod 39 drives the fixed plate 12 to rotate, so that the bristles can sweep and clean the impurities on the filter. At the same time, the suction pump on the third connecting pipe 11 can be removed, and then the air pump can be installed on the third connecting pipe 11, so that the air pump can fill the third connecting pipe 11 with gas. At this time, the gas will be back-blown through the filter, thereby taking away the swept impurities and finally discharged from the suction hole. The above mechanism achieves the effect of cleaning the filter, thereby ensuring the use effect of the filter. When the present application uses activated carbon to treat harmful gases, the round rod 39 can be connected to the connecting shaft 18 by means of a connecting mechanism. At this time, the motor 17 can be used to drive the round rod 39 to rotate, thereby driving the connecting shaft 18 to rotate, so that the stirring blade 19 stirs the activated carbon, reduces the gas diffusion resistance, and makes it easier for gas molecules to contact the pore structure of the activated carbon, thereby improving the adsorption rate and capacity, and improving the effect of treating harmful gases. When the present application needs to stir the activated carbon with the help of the stirring blade 19, the circular shaft and the second connecting rod 20 can be connected by means of the clamping connection between the clamping groove 21 and the clamping rod 25. At this time, the connecting column 15 can be driven by the motor 17 to rotate. At this time, the connecting column 15 will drive the circular rod 39 to rotate, thereby driving the second connecting rod 20 and the connecting shaft 18 to rotate, so that the stirring blade 19 can stir the activated carbon. When the filter needs to be cleaned, in order to prevent the bristles from being in contact with the filter for a long time during rotation and cleaning, causing unnecessary loss, when the filter needs to be cleaned, the electromagnet 16 can be started to push the magnetic ring 14, so that the magnetic ring 14 pushes the circular rod 39 to move. At this time, the circular rod 39 will drive the fixed plate 12 to move to one side of the filter, thereby allowing the bristles to contact the filter. During this process, the clamping rod 25 is always in a state of being clamped with the clamping groove 21, and then in the circular rod 39, the bristles are in contact with the filter. When the rod 39 rotates, the bristles can clean the filter. After cleaning is completed, the electromagnet 16 is turned off. At this time, the first spring will pull the round rod 39 to slide in the connecting column 15 to reset, so that the bristles are away from the filter. At this time, when the motor 17 drives the stirring blade 19 to rotate normally, the bristles will not contact the filter. After the external air pump is connected to the third connecting pipe 11 in the present application to clean the filter, the sealing component can be used to seal the end of the third connecting pipe 11 close to the connecting box 10, and then the air pump is used to continue to inject gas into the third connecting pipe 11. At this time, the gas will pass through the third air guide groove 34, the second air guide groove 33, the inside of the second connecting shaft 18, the first air guide groove 24, the round groove, the inside of the round rod 39, and finally enter the fixed plate 12 and be blown out from the air outlet 26, so that the gas can be blown directly on the filter at a close distance to further clean the filter. The electromagnet 16 in the application will push the round rod 39 to move when starting, so that the bristles contact the filter screen, and the push rod 27 will be driven to push the sliding ring 23, at this time the sliding ring 23 will push the gas in the fixed ring 22 to be discharged from the conduit 28, at this time the gas will enter the rectangular plate 31, at this time the sealing plate 30 will be pushed, so that the first through hole and the second through hole are misaligned, at this time the air pump injects gas into the third connecting pipe 11, and the gas finally enters the fixed plate 12, and then is sprayed from the air outlet hole 26 to the filter screen, the conduit 28 is arranged to avoid the stirring blade 19 in the connecting box 10, when the electromagnet 16 is closed, the sealing plate 30 will be reset under the pulling of the third spring, so that the first through hole and the second through hole are aligned, and the round rod 39 is also reset, and then the third connecting pipe 11 is injected with gas again, and the impurities cleaned on the filter screen are carried away by the gas flow and discharged from the air inlet hole, and then an air suction pump can be externally connected to the third connecting pipe 11 to suck the harmful gas externally connected to the connecting box 10 for treatment, and the first one-way valve 32 can allow the gas to flow to the side close to the second connecting rod 20, so that part of the gas cannot pass through the connecting box 10 when being sucked.

[0031] The above-mentioned front, rear, left, right, up, and down are based on the Figure 1 of the drawings, and are defined as front, left, and the like according to the perspective of a person observing, with the side of the device facing the observer defined as front, the left side of the observer defined as left, and the like.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0033] The basic principles, main features, and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A profile laser cutting device for steel structure production, comprising a machine tool (1), a connector (3) and a pair of guide rails (2), wherein the pair of guide rails (2) are arranged on the machine tool (1), the connector (3) can move along the Y axis on the guide rails (2), the connector (3) is provided with a mounting plate (4) that can move along the X axis, and a laser cutting head (5) is fixedly mounted on the mounting plate (4); Its characteristics are: A hollow ring (6) is fixedly connected to the side wall of the laser cutting head (5), and a group of air inlet holes evenly distributed in an annular pattern are formed on the bottom surface of the hollow ring (6); The side wall of the hollow ring (6) is connected to a first connecting pipe (7), and the inner wall of the hollow ring (6) is fixedly connected to a filter screen; The end of the first connecting tube (7) away from the hollow ring (6) is connected to the hollow connecting ring (8), the end of the connecting ring (8) away from the first connecting tube (7) is connected to the second connecting tube (9), and the end of the second connecting tube (9) away from the first connecting tube (7) is provided with an air intake component and a purification component.

2. The profile laser cutting device for steel structure production according to claim 1, characterized in that: The purification component comprises a connection box (10) connected to the second connection pipe (9), granular activated carbon is arranged in the connection box (10), and the air suction component comprises a third connection pipe (11), the third connection pipe (11) is connected to the side of the connection box (10) away from the second connection pipe (9), and an air suction pump can be installed at the end of the third connection pipe (11) away from the connection box (10).

3. The profile laser cutting device for steel structure production according to claim 2, characterized in that: A rotating ring (35) is provided at the center of the filter screen, and a round rod (39) is movably connected to the inner wall of the rotating ring (35). A fixed plate (12) is fixedly connected to the outer wall of the round rod (39). A group of bristles is fixedly connected to the side of the fixed plate (12) close to the filter screen, and the bristles can clean impurities on the filter screen. A motor (17) for driving the round rod (39) to rotate is provided in the hollow ring (6).

4. The profile laser cutting device for steel structure production according to claim 3, characterized in that: The inner wall of the connecting box (10) is rotatably connected to a connecting shaft (18), and the outer wall of the connecting shaft (18) is fixedly connected to multiple groups of stirring blades (19), and the stirring blades (19) are used to stir the activated carbon. A connecting mechanism is provided between the connecting shaft (18) and the round rod (39).

5. The profile laser cutting device for steel structure production according to claim 4, characterized in that: The connecting mechanism comprises a first connecting rod (13) fixedly connected to the output end of the motor (17); an end of the first connecting rod (13) away from the motor (17) is fixedly connected to a connecting column (15); an end of the connecting column (15) away from the first connecting rod (13) is open; the round rod (39) is slidably connected to the open end of the connecting column (15); an electromagnet (16) is fixedly connected to the inner wall of the connecting column (15); and an end of the round rod (39) close to the first connecting rod (13) is fixedly connected to a magnetic ring (14) that repels the electromagnet (16). , and a first spring is fixedly connected between the side of the round rod (39) close to the magnetic ring (14) and the inner wall of the connecting column (15), and the end of the connecting shaft (18) close to the round rod (39) is fixedly connected to the second connecting rod (20), and the end of the second connecting rod (20) away from the connecting shaft (18) is provided with a circular groove, and the round rod (39) is slidably connected to the inner wall of the circular groove, and the inner wall of the circular groove is provided with a group of clamping grooves (21), and the end of the round rod (39) close to the second connecting rod (20) is fixedly connected to a group of clamping rods (25) clamped with the clamping grooves (21).

6. The profile laser cutting device for steel structure production according to claim 5, characterized in that: The interior of the fixing plate (12) is a hollow structure, and a group of air outlet holes (26) are provided on the side of the fixing plate (12) close to the bristles. The interior of the round rod (39) is a hollow structure, and a first through hole is provided between the round rod (39) and the fixing plate (12) and is connected to each other. The interior of the connecting shaft (18) is a hollow structure, and the end of the second connecting rod (20) away from the round rod (39) is provided with a first air guide groove (24) connected to the interior of the connecting shaft (18), and the end of the round rod (39) close to the connecting shaft (18) is provided with a second through hole connected to the round groove. A through groove (29) is provided in the connecting rod (20) and is connected to the first air guide groove (24) and the circular groove. A second air guide groove (33) is provided at one end of the connecting shaft (18) away from the second connecting rod (20). A third air guide groove (34) is provided in the connecting box (10) and is connected to the third connecting pipe (11). One end of the third air guide groove (34) away from the third connecting pipe (11) is connected to the second air guide groove (33). The circular rod (39) is sealed and movably connected to the inner wall of the circular groove. A sealing component for sealing the third connecting pipe (11) is provided in the connecting box (10).

7. The profile laser cutting device for steel structure production according to claim 6, characterized in that: The sealing mechanism includes a fixed ring (22) fixedly connected to the inner wall of the second connecting tube (9), the fixed ring (22) is provided with an opening on one side away from the connecting shaft (18), the inner wall of the fixed ring (22) is sealingly and slidingly connected to a slip ring (23), a group of second springs are fixedly connected between the side of the slip ring (23) close to the connecting shaft (18) and the inner wall of the fixed ring (22), a conduit (28) is connected to the inside of the fixed ring (22), a push rod (27) for pushing the slip ring (23) is fixedly connected to the side wall of the round rod (39), and the inner wall of the connecting box (10) is fixedly connected to a spring covering the third A rectangular plate (31) on the connecting pipe (11) is provided with an opening at the top end of the rectangular plate (31), and a sealing plate (30) is sealingly and slidingly connected to the inner wall of the rectangular plate (31), a group of first through holes are provided on both sides of the rectangular plate (31), and a group of second through holes communicating with the first through holes are provided on the sealing plate (30), an end of the conduit (28) away from the fixing ring (22) is communicated with the interior of the rectangular plate (31), a third spring is fixedly connected between the bottom surface of the sealing plate (30) and the inner wall of the rectangular plate (31), and a first one-way valve (32) is provided in the connecting shaft (18).

8. The profile laser cutting device for steel structure production according to claim 7, characterized in that: The inner wall of the hollow ring (6) is slidably connected to a circular ring (38), the bottom surface of the circular ring (38) is fixedly connected to a group of dredging rods (36) corresponding to the air suction holes, the surface of the dredging rods (36) is fixedly connected to a sealing ring (37) for sealing the air suction holes, the top end of the hollow ring (6) is connected to an air outlet pipe (40), and a second one-way valve is provided in the air outlet pipe (40).

9. A method for laser cutting profiles for steel structure production, the method using the laser cutting device for steel structure production as claimed in claim 8, characterized in that: The method comprises the following steps: S1: Prepare the steel and check whether there is oil stain and rust on the surface of the steel. If there is any oil stain and rust, treat them before proceeding with subsequent cutting. At the same time, ensure that the steel is flat and without warping. S2: by placing multiple steel materials on the machine tool (1) at the same time and aligning the steel materials, then setting the laser power emitted by the laser cutting head (5) according to the material of the steel materials, and moving the laser cutting head (5) with the help of the cooperation of the guide rail (2) and the connector (3) to cut the steel materials; S3: When the steel is being cut, the connection box (10) is sucked by means of an air pump, so that suction is generated at the suction hole, thereby sucking the harmful gas generated during the cutting process into the connection box (10) and being purified by the activated carbon. The particulate impurities are first filtered by the filter.

10. The laser cutting method for steel structure production according to claim 9, characterized in that: The method further comprises the steps of: S4: Start the electromagnet (16) to push the magnetic ring (14), so that the magnetic ring (14) pushes the round rod (39) to move, and then the round rod (39) drives the fixed plate (12) to move toward one side of the filter, so that the bristles come into contact with the filter, and then the motor (17) drives the bristles to rotate, so that the bristles can brush away impurities on the filter; S5: The air suction pump on the third connecting pipe (11) is removed, and then the air charging pump is installed on the third connecting pipe (11), and the air charging pump is allowed to fill the third connecting pipe (11) with gas. At this time, the gas will be back-flushed through the filter, and the impurities removed will be discharged from the outlet pipe (40) through the gas.

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