A laser cutting device for metal processing pipe

Abstract

This application discloses a laser cutting device for metal tubes, belonging to the field of laser cutting technology. The device includes side covers, with a housing fixedly connected between the two side covers. A movable slide rail is movably connected to the top of the front and rear sides of the housing. A laser cutter is movably connected to the outer side of the slide rail. A support base plate is fixedly connected to the inner top of the housing. An electric cylinder is fixedly connected to the outer front and rear sides of the housing. A movable lower pressure plate is fixedly connected to the top of the electric cylinder. By activating the electric cylinder, in conjunction with the movable lower pressure plate, rack, gear, shaft, pulley, belt, and pulley, multiple bidirectional lead screws rotate, driving multiple sets of clamping blocks to move towards each other. The movable lower pressure plate adjusts the pressing distance according to the diameter of the metal tube, thus making the device suitable for metal tubes of different diameters within a certain range, thereby improving the device's adaptability.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting technology, specifically relating to a laser cutting device for metal processing tubes. Background Technology

[0002] A laser cutting machine focuses a laser beam emitted from a laser source into a high-power-density beam through an optical path system. This beam irradiates the workpiece surface, causing it to reach its melting or boiling point. Simultaneously, high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position of the beam and workpiece moves, a kerf is formed, achieving the cutting purpose. Laser cutting uses an invisible laser beam instead of a traditional mechanical blade, offering advantages such as high precision, fast cutting speed, no limitation on cutting patterns, automatic layout to save material, smooth cuts, and low processing costs. It will gradually improve upon or replace traditional metal cutting equipment. The mechanical parts of the laser cutter head do not contact the workpiece, preventing scratches on the workpiece surface during operation.

[0003] Chinese invention patent CN120326189A discloses a laser cutting device for stainless steel pipes, including a cutting table. An electric slide rail is fixedly connected to the top of the cutting table, and a movable bracket is mounted on the moving end of the electric slide rail. A fixed plate is fixedly connected to the top of the cutting table, and a clamping plate is fixedly connected to the top of the fixed plate. An elastic connecting rod is fixedly connected to the top of the fixed plate. A sliding rod is slidably connected to the inner wall of the movable plate, and a clamping plate is fixedly connected to the bottom end of the sliding rod. Guide plates are fixedly connected to both sides of the movable plate, and a pulley is mounted on the outer surface of the movable bracket. In the aforementioned application, when cutting metal pipes, the existing metal pipe fixing equipment can only fix metal pipes of a corresponding fixed diameter, which easily reduces the applicability of the equipment. Furthermore, the angle of the metal pipe cannot be changed after fixing, making the cutting surface prone to offset. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a tube laser cutting device for metal processing, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides a tube laser cutting device for metal processing, including side covers, an outer shell fixedly connected between the two side covers, a slag collection bin at the bottom of the outer shell, a movable slide rail device movably connected to the top of the front and rear sides of the outer shell, a laser cutter movably connected to the outer side of the movable slide rail device, a support base plate fixedly connected to the inner top of the outer shell, an electric cylinder fixedly connected to the outer front and rear sides of the outer shell, and a movable pressure plate fixedly connected to the top of the electric cylinder. Multiple racks are fixedly connected to the front interior of the movable lower pressure plate. Multiple fixing blocks are fixedly connected to the top of the support base plate. A rotating shaft is movably connected inside the fixing block. A gear is fixedly connected to the front end of the rotating shaft, and the gear meshes with the rack. A pulley is fixedly connected to the rear end of the rotating shaft. Multiple fixed base plates are fixedly connected to the top of the support base plate. Fixing blocks are fixedly connected to the top of the front and rear sides of the fixed base plates. Multiple bidirectional lead screws are movably connected inside the fixing blocks. A pulley is fixedly connected to the front end of the multiple bidirectional lead screws. A belt is movably connected to the outer side of the pulley and the outer side of the pulley. Slide rails are fixedly connected to the top left and right sides of the fixed base plate. Multiple clamping blocks are movably connected to the outer side of the slide rails. The interior of the clamping blocks is movably connected to the outer side of the multiple bidirectional lead screws. Slide grooves are opened on the left and right sides of the clamping blocks. The interior of the slide grooves is movably connected to the outer side of the slide rails. The equipment is equipped with a multi-segment bidirectional screw and clamping blocks. When the equipment is started, it works in conjunction with the movable lower pressure plate, rack one, gear one, rotating shaft one, pulley one, belt, and pulley two to make the multi-segment bidirectional screw rotate, which drives multiple sets of clamping blocks to move in opposite directions. The movable lower pressure plate adjusts the pressing distance according to the diameter of the metal pipe, so that the equipment can be used for metal pipes of different diameters within a certain range, thereby improving the adaptability of the equipment.

[0006] As a further description of the above technical solution: The meshing length of rack one is greater than the movement trajectory of the electric cylinder, and rack one is always meshed with gear one.

[0007] As a further description of the above technical solution: The slag collection bin is internally connected to an automatic slag collection device, and the movable pressure plate is internally connected to multiple pressure positioning plates.

[0008] As a further description of the above technical solution: A metal tube is placed between each of the pressure positioning plates and the fixed base plate, and a light-shielding component is movably connected to the rear side of the housing.

[0009] As a further description of the above technical solution: The light-shielding assembly includes a rack two, a gear two, a fixing block three, a rotating shaft two, an electric self-locking device, an L-shaped light-shielding plate, an observation window, a dust suction port, a branch pipe, an exhaust pipe, a negative pressure fan, a filter box, an air outlet, and a dust suction enclosure. The rack two is fixedly connected to the bottom left side of the movable lower pressure plate. Two fixing blocks three are fixedly connected to the rear surface of the outer casing. A rotating shaft two is movably connected between the two fixing blocks three. A gear two is fixedly connected to the left side of the rotating shaft two, and the gear two meshes with the rack two. An electric self-locking device is fixedly connected to the right side of the gear two. An L-shaped light-shielding plate is fixedly connected to the outer side. An observation window is provided on the surface of the L-shaped light-shielding plate, and multiple dust suction ports are provided on the top of the L-shaped light-shielding plate. The top of each dust suction port is connected to a fixed plate at one end of a branch pipe, and the other end of the branch pipe is fixedly connected to an exhaust pipe. A filter box is fixedly connected to the outer side of the left side cover, and a negative pressure fan is fixedly connected to the top of the filter box. The top of the negative pressure fan is fixedly connected to the bottom of the exhaust pipe. An air outlet is fixedly connected to the outer side of the filter box. Multiple dust suction barriers are fixedly connected to the inner surface of the L-shaped light-shielding plate. A light-shielding assembly is installed so that, during the fixing of the metal pipe, it works in conjunction with rack and pinion, gear, rotating shaft, electric self-locking device, and negative pressure fan to rotate the L-shaped light-shielding plate counterclockwise to a vertical position, blocking the strong light during the cutting process while simultaneously allowing the dust suction ports to continuously extract smoke and dust, thus protecting the operator's safety.

[0010] As a further description of the above technical solution: The outer movement trajectory of the L-shaped light shield does not coincide with the movement trajectory of the moving slide rail device. The top horizontal height of the L-shaped light shield is higher than the top horizontal height of the laser cutter. The length of the L-shaped light shield is the same as the length of the supporting base plate.

[0011] As a further description of the above technical solution: The branch pipe and exhaust pipe are telescopic corrugated flexible hoses, and the internal part of the pressure positioning plate is movably connected with an auxiliary fixing component.

[0012] As a further description of the above technical solution: The auxiliary fixing assembly includes four fixing blocks, three rotating shafts, an upper roller, a movable groove, a lower roller, a fixed slide rail, four rotating shafts, a slider, and a spring. The bottom two sides of the lower positioning plate are fixedly connected to the four fixing blocks. A rotating shaft is movably connected between the two four fixing blocks. An upper roller is fixedly connected to the outer side of the rotating shaft. A drive motor is fixedly connected to the left side of the rotating shaft. The clamping blocks have a movable groove inside. Fixed slide rails are fixedly connected to the left and right sides of the movable groove. A slider is movably connected inside the fixed slide rail. A spring is fixedly connected between the slider and the inner side of the fixed slide rail. A rotating shaft is movably connected between the two sliders. A lower roller is fixedly connected to the outer side of the rotating shaft. This auxiliary fixing assembly, when the clamping blocks move towards each other, works with the upper roller, lower roller, fixed slide rail, slider, and spring to automatically adjust the position of the lower roller according to the diameter of the metal tube, thereby reducing hard contact and preventing the clamping blocks from deforming the metal tube when processing thin metal tubes.

[0013] As a further description of the above technical solution: The movement trajectory of the lower roller does not contact the interior of the movable groove, and both the upper and lower rollers are elastic knurled rollers.

[0014] As a further description of the above technical solution: The outer side of the upper roller does not contact the bottom surface of the lower positioning plate.

[0015] The advantages of this application are: (1) When the equipment is started, the movable lower pressure plate, rack one, gear one, rotating shaft one, pulley one, belt, and pulley two work together to make the multi-section bidirectional screw rotate, which drives multiple sets of clamping blocks to move towards each other. The movable lower pressure plate adjusts the pressing distance according to the diameter of the metal pipe, so that the equipment can be used for metal pipes of different diameters within a certain range, thereby improving the adaptability of the equipment.

[0016] (2) When the metal tube is fixed, the L-shaped light shield is rotated counterclockwise to a vertical position in conjunction with the rack, gear, shaft, electric self-locking device and negative pressure fan, so that the strong light during the cutting process is blocked, and the dust suction port continuously draws out the smoke and dust, thereby protecting the safety of the operator.

[0017] (3) When the clamping blocks move towards each other, the upper roller, lower roller, fixed slide rail, slider and spring are used to make the lower roller automatically adjust its position according to the diameter of the metal tube, thereby reducing hard contact and preventing the clamping blocks from deforming the metal tube when the equipment is processing thin metal tubes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall left side structure of the present invention; Figure 2 This is a schematic diagram of the overall top structure of the present invention; Figure 3 This is a schematic diagram of some components of the present invention; Figure 4 This is the present invention. Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the front structure of the light-shielding component of the present invention; Figure 6 This is a schematic diagram of the rear structure of the light-shielding component of the present invention; Figure 7 This is a schematic diagram of the auxiliary fixing component structure of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged structural diagram at point B.

[0019] Explanation of key figure labels: 100. Side cover; 200. Outer shell; 300. Slag collection bin; 400. Mobile slide rail device; 500. Laser cutter; 600. Support base plate; 700. Electric cylinder; 800. Movable lower pressure plate; 901. Rack 1; 902. Gear 1; 903. Fixing block 1; 904. Rotating shaft 1; 905. Pulley 1; 906. Belt; 907. Pulley 2; 908. Multi-segment bidirectional lead screw; 909. Fixing block 2; 910. Slide rail; 911. Slide groove; 912. Clamping block; 1000. Light-shielding assembly; 1001. Rack II; 1002. Gear II; 1003. Fixing block III; 1004. Rotating shaft II; 1005. Electric self-locking device; 1006. L-shaped light-shielding plate; 1007. Observation window; 1008. Dust suction port; 1009. Branch pipe; 1010. Exhaust duct; 1011. Negative pressure fan; 1012. Filter box; 1013. Air outlet; 1014. Dust collection enclosure; 1100. Auxiliary fixing component; 1101. Fixing block four; 1102. Rotating shaft three; 1103. Upper roller; 1104. Movable groove; 1105. Lower roller; 1106. Fixed slide rail; 1107. Rotating shaft four; 1108. Slider; 1109. Spring. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0021] Example 1, as Figures 1-4 As shown, a metal processing tube laser cutting device includes a side cover 100, a housing 200 fixedly connected between the two side covers 100, a slag collection bin 300 at the bottom of the housing 200 to collect and clean the molten slag generated during laser cutting, a movable slide rail device 400 movably connected to the top of the front and rear sides of the housing 200 to allow the laser cutter 500 to move, the laser cutter 500 movably connected to the outer side of the movable slide rail device 400, a support base plate 600 fixedly connected to the inner top of the housing 200, an electric cylinder 700 fixedly connected to the outer front and rear sides of the housing 200, a mechanical stroke limiter fixedly connected inside the electric cylinder 700 to prevent the electric cylinder 700 from moving beyond the limit and thus protect the metal tube, and a movable lower pressure plate 800 fixedly connected to the top of the electric cylinder 700. Multiple racks 901 are fixedly connected to the front interior of the movable lower pressure plate 800. Multiple fixing blocks 903 are fixedly connected to the top of the support base plate 600. A rotating shaft 904 is movably connected inside the fixing block 903. A gear 902 is fixedly connected to the front end of the rotating shaft 904, and the gear 902 meshes with the racks 901. A pulley 905 is fixedly connected to the rear end of the rotating shaft 904. Multiple fixed base plates are fixedly connected to the top of the support base plate 600. Fixing blocks 909 are fixedly connected to the top of the front and rear sides of the fixed base plates. Multiple double-acting screws 908 are movably connected inside the fixing blocks 909. A belt is fixedly connected to the front end of the multiple double-acting screws 908. Wheel 2 907, pulley 2 907 and pulley 1 905 are movably connected by belt 906. The belt 906 is set so that the power of pulley 1 905 is transmitted to belt 906, and then belt 906 transmits the power to pulley 2 907. The top left and right sides of the fixed base plate are fixedly connected to slide rails 910. Multiple clamping blocks 912 are movably connected to the outside of slide rails 910. The inside of clamping blocks 912 is movably connected to the outside of multiple bidirectional lead screws 908. Slide grooves 911 are opened on the left and right sides of clamping blocks 912. The slide grooves 911 prevent clamping blocks 912 from rotating and move along the direction of slide grooves 911. The inside of slide grooves 911 is movably connected to the outside of slide rails 910.

[0022] The meshing length of rack 901 is greater than the movement trajectory of electric cylinder 700, and rack 901 is always meshed with gear 902. An automatic slag collection device is movably connected inside the slag collection bin 300 to collect the molten metal slag accumulated on the supporting base plate 600. Multiple downward positioning plates are movably connected inside the movable lower pressure plate 800. A metal pipe is placed between each downward positioning plate and the fixed base plate. A light-shielding assembly 1000 is movably connected to the rear side of the outer casing 200.

[0023] The system is equipped with a multi-segment bidirectional lead screw 908 and clamping blocks 912. When the equipment is started, it works in conjunction with a movable lower pressure plate 800, rack 901, gear 902, shaft 904, pulley 905, belt 906, and pulley 907 to rotate the multi-segment bidirectional lead screw 908, which in turn drives multiple sets of clamping blocks 912 to move in opposite directions. The movable lower pressure plate 800 adjusts the pressing distance according to the diameter of the metal pipe, so that the equipment can be used for metal pipes of different diameters within a certain range, thereby improving the adaptability of the equipment.

[0024] In practical use, after placing all the metal tubes on the fixed base plate, the electric cylinder 700 is activated. The electric cylinder 700 moves the movable lower pressure plate 800 downwards, causing the rack 901 to follow and move downwards. The rack 901 then drives the gear 902 to rotate, which in turn drives the rotating shaft 904 to rotate. The rotating shaft 904 then drives the pulley 905 to rotate, which in turn drives the belt 906 to rotate, thus driving... The rotation of pulley 907 causes the multi-segment bidirectional screw 908 to rotate clockwise, which in turn causes the multi-segment bidirectional screw 908 to move multiple pairs of clamping blocks 912 toward each other. As the top of the metal tube is gradually fixed by the downward positioning plate, the clamping blocks 912 on both sides wrap around and fix the outside of the metal tube. This allows the movable downward pressure plate 800 to adjust the downward pressure distance according to the diameter of the metal tube, thus making the equipment suitable for metal tubes of different diameters within a certain range, thereby improving the adaptability of the equipment.

[0025] Example 2, as Figures 1-6As shown, based on Embodiment 1, the light-shielding assembly 1000 includes a rack and pinion 2 1001, a gear 2 1002, a fixing block 3 1003, a rotating shaft 2 1004, an electric self-locking device 1005, an L-shaped light-shielding plate 1006, an observation window 1007, a dust suction port 1008, a branch pipe 1009, an exhaust pipe 1010, a negative pressure fan 1011, a filter box 1012, an air outlet 1013, and a dust suction enclosure 1014. A rack 1001 is fixedly connected to the bottom left side of the moving lower pressure plate 800. Two fixing blocks 1003 are fixedly connected to the rear surface of the outer casing 200. A rotating shaft 1004 is movably connected between the two fixing blocks 1003. A gear 1002 is fixedly connected to the left side of the rotating shaft 1004. The gear 1002 meshes with the rack 1001. An electric self-locking device 1005 is fixedly connected to the right side of the gear 1002. An L-shaped light shield 1006 is fixedly connected to the outer side of shaft 2 1004. An observation window 1007 is opened on the surface of the L-shaped light shield 1006. A magnetic light-blocking plate is attached to the surface of the observation window 1007. Multiple dust suction ports 1008 are opened on the top of the L-shaped light shield 1006. The top of each dust suction port 1008 is fixedly connected to one end of a branch pipe 1009. The other end of the branch pipe 1009 is fixedly connected to an exhaust pipe 1010. A filter box 1012 is fixedly connected to the outer side of the left side cover 100. A negative pressure fan 1011 is fixedly connected to the top of the filter box 1012. The top of the negative pressure fan 1011 is fixedly connected to the bottom of the exhaust pipe 1010. An air outlet 1013 is fixedly connected to the outer side of the filter box 1012. Multiple dust suction barriers 1014 are fixedly connected to the inner surface of the L-shaped light shield 1006. A filter screen is fixedly connected inside the dust suction barriers 1014.

[0026] The outer movement trajectory of the L-shaped light shield 1006 does not coincide with the movement trajectory of the movable slide rail device 400. The top horizontal height of the L-shaped light shield 1006 is higher than the top horizontal height of the laser cutter 500. The length of the L-shaped light shield 1006 is the same as the length of the supporting base plate 600. The branch pipe 1009 and the exhaust pipe 1010 are telescopic corrugated flexible hoses, and the auxiliary fixing component 1100 is movably connected inside the pressure positioning plate.

[0027] The light-shielding component 1000 is set up so that, when the metal tube is fixed, it works in conjunction with rack 1001, gear 1002, shaft 1004, electric self-locking device 1005, and negative pressure fan 1011 to rotate the L-shaped light-shielding plate 1006 counterclockwise to a vertical position, thereby blocking the strong light during the cutting process. At the same time, the dust suction port 1008 continuously extracts smoke and dust, thus protecting the safety of the operator.

[0028] In practical use, when the movable lower pressure plate 800 moves downward, it causes the rack 1001 to move downward, which in turn causes the gear 1002 to rotate counterclockwise. The gear 1002 then rotates the shaft 1004, which in turn rotates the L-shaped light-blocking plate 1006 counterclockwise to a vertical position. After a delay, the electric self-locking device 1005 is activated, locking the shaft 1004 and thus securing the L-shaped light-blocking plate 1006. With the light shield 1006 stable, the negative pressure fan 1011 is then started, causing the dust suction port 1008 to draw the fumes generated during the laser cutting process into the exhaust pipe 1010. The fumes then enter the filter box 1012, where most of the fumes are absorbed and discharged from the air outlet 1013. This blocks the strong light during the cutting process, thus protecting the operator's safety. When resetting, the electric self-locking device 1005 is unlocked first to prevent damage to the electric self-locking device 1005.

[0029] Example 3, as Figures 2-8 As shown, based on Embodiment 1 (or Embodiment 2), the auxiliary fixing component 1100 includes a fixing block 1101, a rotating shaft 1102, an upper roller 1103, a movable groove 1104, a lower roller 1105, a fixed slide rail 1106, a rotating shaft 1107, a slider 1108, and a spring 1109. The fixing blocks 1101 are fixedly connected to both sides of the bottom of the lower positioning plate. A rotating shaft 1102 is movably connected between the two fixing blocks 1101. An upper roller 1103 is fixedly connected to the outer side of the rotating shaft 1102. A drive motor is fixedly connected to the left side of the rotating shaft 1102. The clamping block 9... The interior of 12 has a movable groove 1104. Fixed slide rails 1106 are fixedly connected to the left and right sides of the movable groove 1104. The fixed slide rails 1106 are provided so that the slider 1108 can move slightly along the fixed slide rails 1106. The slider 1108 is movably connected inside the fixed slide rails 1106. A spring 1109 is fixedly connected between the slider 1108 and the inner side of the fixed slide rails 1106. The spring 1109 is provided so that the slider 1108 can automatically return to its original position. A rotating shaft 1107 is movably connected between the two sliders 1108. A lower roller 1105 is fixedly connected to the outer side of the rotating shaft 1107.

[0030] The movement trajectory of the lower roller 1105 does not contact the interior of the movable groove 1104. Both the upper roller 1103 and the lower roller 1105 are elastic knurled rollers. The outer side of the upper roller 1103 does not contact the bottom surface of the lower positioning plate.

[0031] An auxiliary fixing component 1100 is provided. When the clamping blocks 912 move towards each other, it works with the upper roller 1103, lower roller 1105, fixed slide rail 1106, slider 1108, and spring 1109 to automatically adjust the position of the lower roller 1105 according to the diameter of the metal tube, thereby reducing hard contact and preventing the clamping blocks 912 from deforming the metal tube when the equipment is processing thin metal tubes.

[0032] In practical use, when the clamping blocks 912 move towards each other, the upper roller 1103 moves downward with the lower positioning plate, so that the outer side of the upper roller 1103 contacts the top of the metal tube. At the same time, the lower rollers 1105 on both sides move towards each other with the clamping blocks 912, so that the outer side of the lower roller 1105 contacts the outer side of the metal tube. The slider 1108 moves automatically along the fixed slide rail 1106 under the drive of the lower rollers 1105, so that the spring 1109 is compressed. This reduces the hard contact between the lower rollers 1105 and the metal tube, thereby increasing the range of metal tube diameters that the equipment can adapt to. At the same time, it prevents the clamping blocks 912 from deforming the metal tube when processing thinner metal tubes. After half of the metal tube is cut, the drive motor is started to rotate the upper roller 1103, so that the metal tube rotates slowly and flips over. This ensures that the metal tube rotates after one side is cut, resulting in a neater cut surface and preventing the cut surface from shifting due to the metal tube being too thick.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tube laser cutting device for metal processing, comprising a side cover, characterized in that, An outer shell is fixedly connected between the two side covers. A slag collection bin is opened at the bottom of the outer shell. A movable slide rail device is movably connected to the top of the front and rear sides of the outer shell. A laser cutter is movably connected to the outer side of the movable slide rail device. A support base plate is fixedly connected to the inner top of the outer shell. An electric cylinder is fixedly connected to the outer front and rear sides of the outer shell. A movable pressure plate is fixedly connected to the top of the electric cylinder. Multiple racks are fixedly connected to the front interior of the movable lower pressure plate. Multiple fixing blocks are fixedly connected to the top of the support base plate. A rotating shaft is movably connected inside the fixing block. A gear is fixedly connected to the front end of the rotating shaft, and the gear meshes with the rack. A pulley is fixedly connected to the rear end of the rotating shaft. Multiple fixed base plates are fixedly connected to the top of the support base plate. Fixing blocks are fixedly connected to the top of the front and rear sides of the fixed base plates. Multiple bidirectional lead screws are movably connected inside the fixing blocks. A pulley is fixedly connected to the front end of the multiple bidirectional lead screws. A belt is movably connected to the outer side of the pulley and the outer side of the pulley. Slide rails are fixedly connected to the top left and right sides of the fixed base plate. Multiple clamping blocks are movably connected to the outer side of the slide rails. The interior of the clamping blocks is movably connected to the outer side of the multiple bidirectional lead screws. Slide grooves are opened on the left and right sides of the clamping blocks. The interior of the slide grooves is movably connected to the outer side of the slide rails.

2. The tube laser cutting device for metal processing according to claim 1, characterized in that, The meshing length of rack one is greater than the movement trajectory of the electric cylinder, and rack one is always meshed with gear one.

3. The tube laser cutting device for metal processing according to claim 2, characterized in that, The slag collection bin is internally connected to an automatic slag collection device, and the movable pressure plate is internally connected to multiple pressure positioning plates.

4. The tube laser cutting device for metal processing according to claim 3, characterized in that, A metal tube is placed between each of the pressure positioning plates and the fixed base plate, and a light-shielding component is movably connected to the rear side of the housing.

5. The tube laser cutting device for metal processing according to claim 4, characterized in that, The light-shielding assembly includes a rack two, a gear two, a fixing block three, a rotating shaft two, an electric self-locking device, an L-shaped light-shielding plate, an observation window, a dust suction port, a branch pipe, an exhaust pipe, a negative pressure fan, a filter box, an air outlet, and a dust suction enclosure. The rack two is fixedly connected to the bottom left side of the movable lower pressure plate. Two fixing blocks three are fixedly connected to the rear surface of the outer casing. A rotating shaft two is movably connected between the two fixing blocks three. A gear two is fixedly connected to the left side of the rotating shaft two, and the gear two meshes with the rack two. An electric self-locking device is fixedly connected to the right side of the gear two. An L-shaped light shield is fixedly connected to the outer side. An observation window is provided on the surface of the L-shaped light shield. Multiple dust suction ports are provided on the top of the L-shaped light shield. The top of each dust suction port is connected to a fixed plate at one end of a branch pipe. The other end of the branch pipe is fixedly connected to an exhaust pipe. A filter box is fixedly connected to the outer side of the left side cover. A negative pressure fan is fixedly connected to the top of the filter box. The top of the negative pressure fan is fixedly connected to the bottom of the exhaust pipe. An air outlet is fixedly connected to the outer side of the filter box. Multiple dust suction barriers are fixedly connected to the inner surface of the L-shaped light shield.

6. The tube laser cutting device for metal processing according to claim 5, characterized in that, The outer movement trajectory of the L-shaped light shield does not coincide with the movement trajectory of the moving slide rail device. The top horizontal height of the L-shaped light shield is higher than the top horizontal height of the laser cutter. The length of the L-shaped light shield is the same as the length of the supporting base plate.

7. The tube laser cutting device for metal processing according to claim 6, characterized in that, The branch pipe and exhaust pipe are telescopic corrugated flexible hoses, and the internal part of the pressure positioning plate is movably connected with an auxiliary fixing component.

8. The tube laser cutting device for metal processing according to claim 7, characterized in that, The auxiliary fixing assembly includes a fourth fixing block, a third rotating shaft, an upper roller, a movable groove, a lower roller, a fixed slide rail, a fourth rotating shaft, a slider, and a spring. The bottom two sides of the lower positioning plate are fixedly connected to the fourth fixing blocks. The third rotating shaft is movably connected between the two fourth fixing blocks. The upper roller is fixedly connected to the outer side of the third rotating shaft. The left side of the third rotating shaft is fixedly connected to the drive motor. The clamping block has a movable groove inside. The left and right sides of the movable groove are fixedly connected to the fixed slide rail. The slider is movably connected inside the fixed slide rail. The inner side of the slider and the fixed slide rail is fixedly connected to the spring. The fourth rotating shaft is movably connected between the two sliders. The lower roller is fixedly connected to the outer side of the fourth rotating shaft.

9. The tube laser cutting device for metal processing according to claim 8, characterized in that, The movement trajectory of the lower roller does not contact the interior of the movable groove, and both the upper and lower rollers are elastic knurled rollers.

10. A tube laser cutting device for metal processing according to claim 9, characterized in that, The outer side of the upper roller does not contact the bottom surface of the lower positioning plate.

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