A dustless cutting laser cutting device for steel pipes

Abstract

The application discloses a kind of steel pipe dust-free cutting laser cutting device, applied to laser cutting field, including dispersion component, dispersion component includes shell, the inside of shell is equipped with isolation layer, isolation layer and shell form backflow cavity between, several groups of filter screen are evenly installed on isolation layer, main gas passage is installed in isolation layer, main gas passage and isolation layer form filter cavity between, gas outlet is opened on main gas passage, gas outlet is communicated inside filter cavity and main gas passage, the bottom of rack two is equipped with motor two, the production end of motor two is connected with main gas passage and fixedly connected with the penetration of rack two and shell, shell inside is evenly equipped with several rib plates, rib plate is divided into multiple by filter cavity and backflow cavity, each group of segmented filter cavity and backflow cavity one-to-one correspondence, one side of rib plate close to main gas passage is equipped with sealing plate, the present application has the characteristics of processing different smoke dust.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, specifically to a dust-free laser cutting device for cutting steel pipes. Background Technology

[0002] Laser cutting is a processing technology that uses a high-energy beam to instantly melt and vaporize metal sheets to complete the cutting process. During the laser cutting operation, the metal vaporizes to generate smoke and dust, and the molten metal droplets are blown away by the airflow to form fine particles, which can easily cause serious harm to the human body.

[0003] In the prior art, CN117161579A discloses a dust-free laser cutting device for steel pipes, which uses an acid reservoir to adsorb the fumes generated during laser cutting. However, the composition of the metal fumes generated after laser cutting of different types of steel pipes varies significantly. Relying solely on a single acid reservoir is insufficient to meet the treatment needs of different fumes. If the acidic absorbent inside the acid reservoir is replaced in real time according to the steel pipe material, it not only increases production costs but also increases safety hazards.

[0004] Therefore, how to adapt and handle the fumes generated from cutting steel pipes of different materials is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a dust-free laser cutting device for steel pipes to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a dust-free laser cutting device for steel pipes, comprising a machine tool and a control system. A second frame is installed inside the machine tool, and a dispersion component is installed on the second frame. The dispersion component includes a housing, and an isolation layer is installed inside the housing. The isolation layer and the housing form a reflux cavity. A plurality of filter screens are uniformly installed on the isolation layer. A main air duct is installed inside the isolation layer, and the main air duct and the isolation layer form a filter cavity. An air outlet is provided on the main air duct, and the air outlet connects the filter cavity and the interior of the main air duct.

[0007] A second motor is installed at the bottom of the second frame. The output end of the second motor passes through the second frame and the outer shell and is fixedly connected to the main air duct. Several ribs are evenly installed inside the outer shell. The ribs evenly divide the filter chamber and the return chamber into multiple parts. Each group of divided filter chambers and return chambers corresponds one-to-one. A sealing plate is installed on the side of the ribs near the main air duct.

[0008] According to the above technical solution, the external part of the dispersion component is provided with a four-way reversing valve one and a four-way reversing valve two. The reversing valve one is installed at the upper end of the frame two, and the reversing valve two is installed at the lower end of the frame two. A suction pump is installed inside the machine tool. One set of ports of the reversing valve one is connected to pipe one, and the other three sets of ports are respectively connected to pipe two. The other end of pipe two passes through the outer shell and communicates with the return cavity. One set of ports of the reversing valve two is connected to pipe three, and the other three sets of ports are connected to pipe four. Pipe four passes through the frame two and the outer shell and communicates with the return cavity. Pipe one is fixedly connected to the input end of the suction pump, and pipe three is fixedly connected to the input end of the suction pump.

[0009] According to the above technical solution, a protective cover is installed above the machine tool, and a feeding port is opened on the side of the protective cover. The inside of the protective cover is equipped with a laser cutting mechanism, a support mechanism, a recycling mechanism and a dust removal mechanism.

[0010] According to the above technical solution, the laser cutting mechanism includes a cross slide fixedly installed on the upper end of the machine tool, a laser cutter is mounted on the slider of the cross slide, a drag chain is mounted on the cross slide, the wiring of the laser cutter is integrated inside the drag chain, and the working end of the laser cutter faces the machine tool.

[0011] According to the above technical solution, the support mechanism includes a bearing seat and a light-absorbing pad fixedly installed on the upper end of the machine tool. The central axis of the bearing seat is coplanar with the central axis of the machine tool, and the central axis of the bearing seat is coplanar with the geometric center point of the feed port. The laser emission point of the laser cutting machine is located directly above the central axis of the bearing seat.

[0012] According to the above technical solution, a hollow rotating seat is connected to the bearing inside the bearing housing. A chuck is fixedly connected to the side of the rotating seat away from the feed port. The chuck is coaxial with the rotating seat. A motor is installed outside the bearing housing. A pulley is fixedly connected to the output end of the motor. A transmission belt is installed on the pulley. The transmission belt is connected to the rotating seat. The pulley, transmission belt and rotating seat form a belt drive assembly. The light-absorbing pad is installed on the upper end of the machine tool. Several rollers and roller groups are installed on the upper end of the light-absorbing pad along the axial direction of the bearing housing. The rollers and roller groups are symmetrically arranged.

[0013] According to the above technical solution, the roller assembly includes a frame one installed on the upper end of the light-absorbing pad, a roller two is provided on the side of the frame one near the roller one, a hydraulic cylinder is fixedly installed on the side of the frame one away from the roller one, the output end of the hydraulic cylinder passes through the frame one and is fixedly connected to the roller two, and a stop block is installed on the fixing structure of the roller two.

[0014] According to the above technical solution, the recycling mechanism includes a guide plate and a recycling box. The guide plate is located on the side of the roller that is away from the roller assembly. The guide plate is fixedly connected to the light-absorbing pad. The machine tool has a discharge port at the end of the guide plate that is away from the roller. The recycling box passes through the machine tool and communicates with the discharge port.

[0015] According to the above technical solution, the dust removal mechanism includes a dust suction pipe and a second frame. The dust suction pipe is integrated and installed inside the cable chain. The inlet end of the dust suction pipe is close to the laser emitting end of the laser cutting machine. The other end of the dust suction pipe is inserted into the machine tool. The outer shell is fixedly installed on the upper end of the second frame.

[0016] According to the above technical solution, the other end of the suction pipe passes through the outer shell and enters the main air duct. The pipe body of the suction pipe is connected to the main air duct bearing. Each group of divided filter chambers has a through hole. The machine tool has several dissolving chambers inside. The through hole in the filter chamber is connected to a pipe five. One end of the pipe five passes through to the bottom of the dissolving chamber. Each group of dissolving chambers is equipped with a liquid replacement pipe and a ventilation pipe. The liquid replacement pipe and the ventilation pipe both extend through the machine tool and are equipped with valves.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting up a dispersing component, realizes the classification and treatment of different types of dust and the recycling of gas after dust filtration, effectively improving work efficiency and safety; by setting up a support mechanism and a recycling mechanism, it realizes the automatic collection of the cut steel pipes, further improving production efficiency. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

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

[0020] Figure 2 This is a schematic diagram of the internal structure of the protective cover of the present invention;

[0021] Figure 3 This is the present invention. Figure 2 Schematic diagram of area A;

[0022] Figure 4 This is the present invention. Figure 2 Schematic diagram of area B;

[0023] Figure 5 This is the present invention. Figure 2 Schematic diagram of region C;

[0024] Figure 6 This is a schematic diagram of the internal structure of the machine tool according to the present invention;

[0025] Figure 7 This is a schematic diagram of the dust removal mechanism of the present invention;

[0026] Figure 8 This is a half-sectional schematic diagram of the outer casing of the present invention;

[0027] Figure 9 This is a top view of the outer casing of the present invention in half section;

[0028] Figure 10 This is a schematic diagram of the operation of the roller 2 of the present invention;

[0029] Figure 11 This is a schematic diagram of the pipeline connection of the present invention;

[0030] In the diagram: 1. Machine tool; 2. Protective cover; 3. Feed port; 4. Laser cutting mechanism; 41. Cross slide; 42. Laser cutting machine; 43. Cable chain; 5. Support mechanism; 51. Bearing seat; 52. Rotary seat; 53. Chuck; 54. Motor 1; 55. Pulley; 56. Transmission belt; 57. Light-absorbing pad; 58. Roller 1; 59. Roller group; 591. Frame 1; 592. Roller 2; 593. Hydraulic cylinder; 594. Stop; 6. Recycling mechanism; 61. Guide plate; 62. Discharge port; 63. Recycling bin; 7. Dust removal mechanism; 8. Suction pipe; 9. Frame II; 10. Outer shell; 11. Isolation layer; 12. Return chamber; 13. Filter screen; 14. Main air duct; 15. Filter chamber; 16. Air outlet; 17. Motor II; 18. Rib plate; 19. Through hole I; 20. Reversing valve I; 21. Reversing valve II; 22. Suction pump; 23. Pipeline I; 24. Pipeline II; 25. Pipeline III; 26. Pipeline IV; 27. Pipeline V; 28. Dissolving chamber; 29. ​​Liquid exchange pipe; 30. Ventilation pipe. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-2The present invention provides a technical solution: a dust-free laser cutting device for cutting steel pipes, including a machine tool 1 and a control system. A protective cover 2 is installed on the top of the machine tool 1, and a feeding port 3 is opened on the side of the protective cover 2.

[0033] The protective cover 2 is equipped with a laser cutting mechanism 4, a support mechanism 5, a recycling mechanism 6, and a dust removal mechanism 7.

[0034] The laser cutting mechanism 4 includes a cross slide 41 fixedly installed on the upper end of the machine tool 1. A laser cutter 42 is mounted on the slider of the cross slide 41. A drag chain 43 is mounted on the cross slide 41. The wiring of the laser cutter 42 is integrated inside the drag chain 43. The cross slide 41, the laser cutter 42 and the drag chain 43 are all existing technologies. The working end of the laser cutter 42 faces the machine tool 1.

[0035] Please see Figures 2-6 The support mechanism 5 includes a bearing seat 51 and a light-absorbing pad 57 fixedly installed on the upper end of the machine tool 1. The central axis of the bearing seat 51 is coplanar with the central axis of the machine tool 1. The central axis of the bearing seat 51 is coplanar with the geometric center point of the feed port 3. The laser emission point of the laser cutting machine 42 is located directly above the central axis of the bearing seat 51.

[0036] The bearing housing 51 has a hollow rotating seat 52 connected to the bearing inside. A chuck 53 is fixedly connected to the side of the rotating seat 52 away from the feed port 3. The chuck 53 is coaxial with the rotating seat 52. A motor 54 is installed outside the bearing housing 51. A pulley 55 is fixedly connected to the output end of the motor 54. A transmission belt 56 is installed on the pulley 55. The transmission belt 56 is connected to the rotating seat 52. The pulley 55, the transmission belt 56 and the rotating seat 52 form a belt drive assembly. The installation and working principle of the belt drive assembly are existing technologies.

[0037] The light-absorbing pad 57 is installed on the upper end of the machine tool 1. Several rollers 58 and roller groups 59 are installed on the upper end of the light-absorbing pad 57 along the axial direction of the bearing seat 51. The rollers 58 and roller groups 59 are symmetrically arranged to support the steel pipe and reduce rotational resistance.

[0038] The roller assembly 59 includes a frame 591 mounted on the upper end of the light-absorbing pad 57. A roller 592 is provided on the side of the frame 591 near the roller 58. A hydraulic cylinder 593 is fixedly mounted on the side of the frame 591 away from the roller 58. The output end of the hydraulic cylinder 593 passes through the frame 591 and is fixedly connected to the roller 592. A stop block 594 is installed on the fixing structure of the roller 592.

[0039] The steel pipe to be cut is passed through the hollow rotating seat 52 from the loading port 3. The operator inputs the type of steel pipe to be cut into the control system. The chuck 53 fixes the shaft of the steel pipe. Rollers 1 58 and 2 592 support the bottom of the steel pipe. The cross slide 41 drives the laser cutting machine 42 to the cutting position. The laser cutting machine 42 and motor 1 54 are started. The laser cutting machine 42 emits laser light. The motor 1 54 drives the belt drive assembly to rotate the rotating seat 52, which in turn drives the chuck 53 to rotate. The chuck 53 then rotates the clamped steel pipe, thus enabling the laser cutting of the steel pipe in conjunction with the laser cutting machine 42. The light-absorbing pad 57 is used to absorb the laser light penetrating the steel pipe to prevent damage to the machine tool 1. The principle of the chuck 53 clamping and rotating the steel pipe is existing technology.

[0040] The recycling mechanism 6 includes a guide plate 61 and a recycling bin 63. The guide plate 61 is located on the side of the roller 58 away from the roller assembly 59, and the guide plate 61 is fixedly connected to the light-absorbing pad 57.

[0041] The machine tool 1 has a discharge port 62 located at the end of the guide plate 61 away from the roller 58. The recycling box 63 passes through the machine tool 1 and is connected to the discharge port 62.

[0042] After the laser cutting machine 42 completes the cutting of the steel pipe, the cut steel pipe is only supported by roller 1 58 and roller 2 592. The hydraulic cylinder 593 corresponding to the position of the cut steel pipe is activated, causing the hydraulic cylinder 593 to push roller 2 592 towards the discharge port 62. Roller 2 592 pushes the cut steel pipe past roller 1 58 (e.g., ...). Figure 9 As shown, the cut steel pipe slides down the guide plate 61 towards the discharge port 62 after passing over roller 58, and finally falls into the recycling box 63 through the discharge port 62. The operator can collect the cut steel pipe from outside the protective cover 2. The stop block 594 is used to prevent the steel pipe from falling off roller 592.

[0043] Please see Figures 6-8 The dust removal mechanism 7 includes a suction pipe 8 and a frame 9. The suction pipe 8 is integrated and installed inside the drag chain 43. The inlet end of the suction pipe 8 is close to the laser emitting end of the laser cutting machine 42, and the other end of the suction pipe 8 is inserted into the machine tool 1.

[0044] The second frame 9 is installed inside the machine tool 1, and the distribution components are installed on the second frame 9.

[0045] The dispersion component includes a housing 10, which is fixedly installed on the upper end of the frame 9. An isolation layer 11 is installed inside the housing 10, and the isolation layer 11 and the housing 10 form a return cavity 12. Several sets of filter screens 13 are evenly installed on the isolation layer 11. For ease of understanding, three sets of filter screens 13 are installed in this application, but multiple sets of filter screens 13 can be set according to actual conditions. A main air duct 14 is installed inside the isolation layer 11. The other end of the suction pipe 8 passes through the housing 10 and enters the main air duct 14. The pipe body of the suction pipe 8 is connected to the main air duct 14 by a bearing.

[0046] The main air duct 14 and the isolation layer 11 form a filter chamber 15. An air outlet 16 is provided on the main air duct 14, which connects the filter chamber 15 and the interior of the main air duct 14.

[0047] Motor 2 17 is installed at the bottom of frame 2 9. The output end of motor 2 17 passes through frame 2 9 and housing 10 and is fixedly connected to main air duct 14.

[0048] The outer casing 10 has several ribs 18 evenly installed inside. The ribs 18 evenly divide the filter chamber 15 and the return chamber 12 into multiple parts. In this application, for ease of understanding and explanation, the ribs 18 evenly divide the filter chamber 15 and the return chamber 12 into three groups. Each group of filter chambers 15 and return chambers 12 corresponds one-to-one. A sealing plate (not shown in the figure) is installed on the side of the rib 18 near the main air passage 14. The rib 18 is sealed to the outer surface of the main air passage 14 through the sealing plate.

[0049] Each of the divided filter chambers 15 has a through hole 19 inside. The dispersion component is equipped with a four-way reversing valve 20 and a reversing valve 21. The reversing valve 20 is installed at the upper end of the frame 9, and the reversing valve 21 is installed at the lower end of the frame 9. The machine tool 1 is equipped with a suction pump 22. One set of ports of the reversing valve 20 is connected to a pipe 23, and the other three sets of ports are connected to pipes 24 respectively. Pipe 23 is fixedly connected to the input end of the suction pump 22, and the other end of pipe 24 passes through the outer shell 10 and communicates with the return chamber 12.

[0050] One set of ports of the reversing valve 21 is connected to pipe 3 25, and the other three sets of ports are connected to pipe 4 26. Pipe 4 26 passes through frame 2 9 and housing 10 and connects to return chamber 12. Pipe 3 25 is fixedly connected to the input end of suction pump 22.

[0051] The machine tool 1 has several dissolving chambers 28 inside, which contain different solutions. The specific type of solution is determined by the type of steel pipe. The filter chamber 15 has a through hole 19 inside which is connected to a pipe 27. One end of the pipe 27 goes through into the bottom of the dissolving chamber 28.

[0052] Each set of dissolving chambers 28 is equipped with a liquid replacement pipe 29 and a ventilation pipe 30. Both the liquid replacement pipe 29 and the ventilation pipe 30 extend through the machine tool 1 and are equipped with valves (not shown in the figure). The liquid replacement pipe 29 is used to replace the solution inside the dissolving chamber 28, and the ventilation pipe 30 is used to discharge gas.

[0053] Example 1: When cutting steel pipes, the composition of the metal fumes produced varies depending on the type of steel pipe. For example, when cutting galvanized steel pipes, the zinc coating on the surface vaporizes along with the steel pipe itself, and the resulting fumes contain not only iron oxide particles but also zinc oxide particles. Stainless steel pipes contain not only elements such as iron and carbon but also chromium. The fumes produced by laser cutting contain trace amounts of hexavalent chromium, which is highly toxic and requires careful handling.

[0054] Therefore, this application provides multiple dissolution chambers 28, each containing a different solution to meet the processing needs of different steel pipe cutting fumes.

[0055] Specifically, the operator inputs the type of steel pipe to be cut into the control system. For example, when cutting galvanized steel pipe, at least one set of dissolving chambers 28 contains a solution for absorbing the fumes from the galvanized steel pipe. The control system starts motor 2 17, which drives the main air duct 14 to rotate. Since the rib plate 18 evenly divides the filter chamber 15, and each set of filter chambers 15 is connected to the dissolving chamber 28 through pipe 5 27, motor 2 17 rotates the air outlet 16 to the filter chamber 15 connected to the corresponding dissolving chamber 28. This set of filter chambers 15 is defined as filter chamber one, and the other two sets of filter chambers 15 are defined as filter chamber two and filter chamber three, respectively. Filter chamber one, filter chamber two, and filter chamber three are only for illustrative purposes and do not limit the structure and function of filter chamber 15 in any way.

[0056] The reversing valve 20 connects the pipe 24 corresponding to the filter chamber 2 to the pipe 23. When the laser cutting machine 42 cuts the steel pipe, the suction pump 22 is started. The suction pump 22 draws air, so that the smoke and dust generated by the cutting of the steel pipe are drawn into the dispersion component along the dust suction pipe 8.

[0057] The reversing valve 21 connects pipeline 3 25 to pipeline 4 26 corresponding to filter chamber 2.

[0058] Smoke and dust enter the main air duct 14 along the suction pipe 8 and enter the filter chamber 1 through the air outlet 16. Since the corresponding pipe 24 is connected to the return chamber 12 and the isolation layer 11 is equipped with a filter screen 13, the metal particles in the smoke and dust are intercepted by the filter screen 13.

[0059] The filtered gas flows through the filter screen 13 into the return chamber 12, and then flows along the second pipeline 24 through the first reversing valve 20, the first pipeline 23, the suction pump 22, the third pipeline 25, the second reversing valve 21, the fourth pipeline 26 and the return chamber 12 corresponding to the second filter chamber. It then flows through the fifth pipeline 27 corresponding to the second filter chamber into the corresponding dissolution chamber 28, and is finally discharged through the ventilation pipe 30.

[0060] After the cutting is completed, all components remain in working condition to allow the suction pipe 8 to remove as much residual smoke and dust as possible. After the smoke and dust is removed, the control motor 17 rotates the main air duct 14 to connect the main air duct 14 with the filter chamber 2.

[0061] Reversing valve 1 20 connects pipeline 1 23 to pipeline 24 corresponding to filter chamber 2, and reversing valve 2 21 connects pipeline 3 25 to pipeline 4 26 corresponding to filter chamber 1.

[0062] At this time, the suction pipe 8 draws air along the main air duct 14, filter chamber two, the return chamber 12 corresponding to filter chamber two, pipe two 24, reversing valve one 20, pipe one 23, suction pump 22, pipe three 25, reversing valve two 21, and pipe four 26 corresponding to filter chamber one into the return chamber 12 corresponding to filter chamber one, and passes through the filter screen 13 that intercepts smoke and dust particles into filter chamber one, and flows through pipe five 27 corresponding to filter chamber one into the dissolution chamber 28.

[0063] During the above process, air passes through the filter screen 13, which intercepts smoke and dust particles, in the opposite direction, blowing off the smoke and dust particles on the filter screen 13 and carrying the particles along the pipe 27 into the dissolution chamber 28 for dissolution, thereby achieving the treatment of smoke and dust.

[0064] Example 2: Based on Example 1, in order to improve work efficiency, different types of steel pipes are often cut alternately. At this time, the operator only needs to input the cutting sequence of different types of steel pipes into the control system to deal with the different fumes generated.

[0065] Specifically, after cutting a certain type of steel pipe, other types of steel pipes are replaced for processing. For example, filter chamber one and filter chamber two process the first and second types of steel pipes in sequence.

[0066] First, the first type of steel pipe is cut. The working principle of the process from the start of cutting the first type of steel pipe to the filter screen 13 corresponding to the filter chamber intercepting smoke and dust particles is the same as that in Example 1.

[0067] After the first type of steel pipe is cut, motor 217 rotates the main air passage 14, connecting the main air passage 14 with the filter chamber 2. Reversing valve 120 connects the pipe 24 corresponding to the filter chamber 2 with the pipe 23 corresponding to the filter chamber 2. Reversing valve 21 connects the pipe 426 corresponding to the filter chamber 1 with the pipe 325 corresponding to the filter chamber 1.

[0068] The working principle of replacing and cutting the second type of steel pipe, from the start of cutting the second type of steel pipe to the interception of smoke and dust particles by the filter screen 13 corresponding to the filter chamber 2, is the same as that in Example 1.

[0069] After the second type of steel pipe screens out the dust, the gas flows along the corresponding pipeline 24, reversing valve 20, pipeline 23, suction pump 22, pipeline 25, reversing valve 21, and pipeline 26 corresponding to filter chamber 1, and enters the return chamber 12 corresponding to filter chamber 1. It blows off the particles intercepted by the first type of steel pipe and carries the dust particles from the first type of steel pipe into the dissolution chamber 28 for processing.

[0070] Furthermore, the gas filtered by different types of dust is recycled through the dispersion component. The gas filtered by the latter type of steel pipe carries the dust particles from the former type of steel pipe for further processing, which further improves the working efficiency. At the same time, the dispersion component replaces the valve in the traditional solution, and the dust particles only move in the suction pipe 8, the main air duct 14 and the filter chamber 15, which reduces the excessive wear of the valve caused by the different particle diameters in different types of dust, and further improves the durability.

[0071] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0072] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust-free laser cutting device for steel pipes, comprising a machine tool (1) and a control system, characterized in that: The machine tool (1) is equipped with a frame two (9) inside. A dispersion component is installed on the frame two (9). The dispersion component includes a shell (10). An isolation layer (11) is installed inside the shell (10). A reflux cavity (12) is formed between the isolation layer (11) and the shell (10). Several sets of filter screens (13) are evenly installed on the isolation layer (11). A main air passage (14) is installed inside the isolation layer (11). A filter cavity (15) is formed between the main air passage (14) and the isolation layer (11). An air outlet (16) is opened on the main air passage (14). The air outlet (16) connects the filter cavity (15) and the main air passage (14). The bottom of the frame 2 (9) is equipped with a motor 2 (17). The output end of the motor 2 (17) passes through the frame 2 (9) and the outer shell (10) and is fixedly connected to the main air duct (14). Several ribs (18) are evenly installed inside the outer shell (10). The ribs (18) evenly divide the filter chamber (15) and the return chamber (12) into multiple parts. Each group of divided filter chambers (15) and return chambers (12) corresponds one-to-one. A sealing plate is installed on the side of the rib (18) near the main air duct (14).

2. The dust-free laser cutting device for steel pipes according to claim 1, characterized in that: The dispersion assembly is externally equipped with a four-way reversing valve one (20) and a reversing valve two (21). The reversing valve one (20) is installed at the upper end of the frame two (9), and the reversing valve two (21) is installed at the lower end of the frame two (9). A suction pump (22) is installed inside the machine tool (1). One set of ports of the reversing valve one (20) is connected to pipe one (23), and the other three sets of ports are respectively connected to pipe two (24). The other end of the pipe two (24) The reversing valve (21) is connected to the return chamber (12) through the outer shell (10). One set of ports of the reversing valve (21) is connected to the pipe (25), and the other three sets of ports are connected to the pipe (26). The pipe (26) passes through the frame (9) and the outer shell (10) and connects to the return chamber (12). The pipe (23) is fixedly connected to the input end of the suction pump (22), and the pipe (25) is fixedly connected to the input end of the suction pump (22).

3. The dust-free laser cutting device for steel pipes according to claim 2, characterized in that: A protective cover (2) is installed above the machine tool (1). A feeding port (3) is opened on the side of the protective cover (2). A laser cutting mechanism (4), a support mechanism (5), a recycling mechanism (6) and a dust removal mechanism (7) are arranged inside the protective cover (2).

4. The dust-free laser cutting device for steel pipes according to claim 3, characterized in that: The laser cutting mechanism (4) includes a cross slide (41) fixedly installed on the upper end of the machine tool (1). A laser cutter (42) is mounted on the slider of the cross slide (41). A drag chain (43) is mounted on the cross slide (41). The wiring of the laser cutter (42) is integrated inside the drag chain (43). The working end of the laser cutter (42) faces the machine tool (1).

5. The dust-free laser cutting device for steel pipes according to claim 4, characterized in that: The support mechanism (5) includes a bearing seat (51) and a light-absorbing pad (57) fixedly installed on the upper end of the machine tool (1). The central axis of the bearing seat (51) is coplanar with the central axis of the machine tool (1). The central axis of the bearing seat (51) is coplanar with the geometric center point of the feed port (3). The laser emission point of the laser cutting machine (42) is located directly above the central axis of the bearing seat (51).

6. The dust-free laser cutting device for steel pipes according to claim 5, characterized in that: The bearing housing (51) has a hollow rotating seat (52) connected to the bearing inside. A chuck (53) is fixedly connected to the side of the rotating seat (52) away from the feed port (3). The chuck (53) is coaxial with the rotating seat (52). A motor (54) is provided outside the bearing housing (51). A pulley (55) is fixedly connected to the output end of the motor (54). A transmission belt (56) is installed on the pulley (55). The transmission belt (56) is connected to the rotating seat (52). The pulley (55), the transmission belt (56) and the rotating seat (52) form a belt drive assembly. The light-absorbing pad (57) is installed on the upper end of the machine tool (1). Several rollers (58) and roller groups (59) are installed on the upper end of the light-absorbing pad (57) along the axial direction of the bearing housing (51). The rollers (58) and roller groups (59) are symmetrically arranged.

7. The dust-free laser cutting device for steel pipes according to claim 6, characterized in that: The roller assembly (59) includes a frame (591) mounted on the upper end of the light-absorbing pad (57). A roller (592) is provided on the side of the frame (591) near the roller (58). A hydraulic cylinder (593) is fixedly installed on the side of the frame (591) away from the roller (58). The output end of the hydraulic cylinder (593) passes through the frame (591) and is fixedly connected to the roller (592). A stop block (594) is installed on the fixed structure of the roller (592).

8. The dust-free laser cutting device for steel pipes according to claim 7, characterized in that: The recycling mechanism (6) includes a guide plate (61) and a recycling box (63). The guide plate (61) is located on the side of the roller (58) away from the roller group (59). The guide plate (61) is fixedly connected to the light-absorbing pad (57). The machine tool (1) is provided with a discharge port (62) at the end of the guide plate (61) away from the roller (58). The recycling box (63) penetrates into the machine tool (1) and communicates with the discharge port (62).

9. The dust-free laser cutting device for steel pipes according to claim 8, characterized in that: The dust removal mechanism (7) includes a suction pipe (8) and a frame two (9). The suction pipe (8) is integrated inside the cable chain (43). The inlet end of the suction pipe (8) is close to the laser emitting end of the laser cutting machine (42). The other end of the suction pipe (8) is inserted into the machine tool (1). The outer shell (10) is fixedly installed on the upper end of the frame two (9).

10. The dust-free laser cutting device for steel pipes according to claim 9, characterized in that: The other end of the suction pipe (8) passes through the outer shell (10) and enters the main air duct (14). The pipe body of the suction pipe (8) is connected to the main air duct (14) bearing. Each group of divided filter chambers (15) has a through hole (19) inside. The machine tool (1) is provided with several dissolving chambers (28). The through hole (19) inside the filter chamber (15) is connected to a pipe (27). One end of the pipe (27) passes through and enters the bottom of the dissolving chamber (28). Each group of dissolving chambers (28) is equipped with a liquid replacement pipe (29) and a ventilation pipe (30). The liquid replacement pipe (29) and the ventilation pipe (30) both extend through and out of the machine tool (1), and valves are installed on the pipe body.

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