A heat exchange tube laser cutting tooling

Abstract

The application discloses a heat exchange pipe laser cutting tool, relates to the technical field of heat exchange pipe laser cutting tools, and comprises a rack, wherein a feeding and clamping mechanism is arranged on the left part of the rack, a laser cutting head is arranged on the middle part of the rack, and an internal processing mechanism is arranged on the right part of the rack through a cylinder driving mechanism. The heat exchange pipe laser cutting tool has the advantages that the effective wall thickness of the lower part is protected, the effect of processing slag is enhanced, and the quality of pipe cutting is improved through the processing mode of isolation and scraping. The heat accumulation of the inner wall during pipe cutting is inhibited, the secondary pollution caused by the slag in the V-shaped collecting groove is avoided, and the cutting quality is affected through the processing mode that the internal gas and the auxiliary gas sprayed by the laser cutting head are coaxial. The main slag removing head, the auxiliary slag removing head and the plugging piece are cooperated with the stabilizing piece to jointly support the finished product pipe from four directions, the collapse of the pipe due to gravity and residual stress release is prevented, and the generation of burrs at the cutting edge is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of heat exchange tube processing technology, and in particular to a laser cutting fixture for heat exchange tubes. Background Technology

[0002] A heat exchange tube is a metal or non-metal pipe installed inside a heat exchanger. Two fluids at different temperatures flow on the inside and outside of the tube wall, exchanging heat through the tube wall to achieve processes such as heating, cooling, condensation, and evaporation. Laser cutting has become a mainstream method for high-precision and high-efficiency material cutting in modern heat exchange tube processing. Currently, during laser cutting of heat exchange tubes, the tube material is usually loaded and fixed first. During the cutting operation, the cutting head moves along a preset path, and a high-energy-density laser beam instantly melts the tube wall material. At the same time, high-pressure auxiliary gas (such as nitrogen) is ejected from the cutting nozzle, and the tube rotates 360 degrees to complete the cutting.

[0003] When cutting the pipe wall, the laser not only cuts through the upper part of the pipe but also causes unnecessary burns or melting damage to the lower part or the vicinity of the lower part, resulting in a reduction in the wall thickness of the lower part of the pipe, which in turn weakens the pressure-bearing strength of the pipe and reduces its quality. Secondly, the slag produced by laser cutting will splash into the inside of the pipe and is difficult to clean. Some of the slag will adhere to the lower edge of the pipe cut and re-solidify to form burrs, which will further reduce the processing quality of the pipe. Furthermore, when the pipe is cut to the point where it is connected to the main body by a tiny piece of material, the entire cut part is in an unstable mechanical state. Due to gravity and the release of residual stress, a noticeable notch, protrusion, or depression will be formed at the end of the cut, which will destroy the smoothness and continuity of the cut and thus produce burrs. Currently, high-pressure auxiliary gas is used to prevent heat buildup during pipe cutting and conduct it downwards to the lower part of the pipe, while also blowing away molten slag. A simple mechanism with an opening at the top is used to catch the molten slag. However, due to insufficient pressure or flow of the high-pressure auxiliary gas, damage or blockage of the nozzle, and the need for regular cleaning of the simple catching mechanism, the processing effect is not good, and the processing quality needs to be improved.

[0004] Therefore, in order to improve the effect of slag treatment and improve the processing quality of heat exchange tubes, this invention provides a laser cutting fixture for heat exchange tubes. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and to propose a laser cutting fixture for heat exchange tubes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a heat exchange tube laser cutting fixture, comprising a frame, wherein a feeding clamping mechanism located on the left and a laser cutting head located in the middle are provided on the frame, and an internal processing mechanism is installed on the right side of the frame via a cylinder drive mechanism, and a feeding mechanism for feeding the tube to be cut is provided to the left of the feeding clamping mechanism. The feeding clamping mechanism is used to clamp the tube to be cut fed from left to right by the feeding mechanism, and the laser cutting head is used to perform laser cutting operations on the tube.

[0007] The internal processing mechanism includes a traction rod fixedly connected to the output end of the cylinder drive mechanism, and a support component is provided on the traction rod. The support component is provided with a slag collection component and a slag removal component, and a drive component is provided on the support component, the slag removal component and the traction rod.

[0008] The support assembly isolates the upper and lower parts of the pipe to be cut while comprehensively collecting splashed slag and debris. The slag collection assembly uses cooling inert gas to cool the area below the cutting position while using airflow to converge and guide the slag and debris out of the support assembly. The slag removal assembly performs two-stage mechanical scraping by adjusting its position inside the pipe to be cut and provides internal support for the detached finished pipe.

[0009] In the aforementioned heat exchange tube laser cutting fixture, the support assembly includes a second cover, the left end of the traction rod is fixedly connected to the second cover, and a collecting body is detachably installed on the left side wall of the second cover. The left side wall of the collecting body is detachably installed with a first cover, and the collecting body is a columnar body facing left and right with a V-shaped collecting groove at the top.

[0010] In the aforementioned laser cutting fixture for heat exchange tubes, the slag collection assembly includes an arc-shaped air guide channel, and multiple arc-shaped air guide channels are evenly distributed from left to right inside the collection body. Both ends of the arc-shaped air guide channels are connected to V-shaped collection grooves. An air inlet channel oriented left and right is provided inside the collection body, and the air inlet channel is connected to the bottom of the multiple arc-shaped air guide channels.

[0011] In the aforementioned heat exchange tube laser cutting fixture, a main collection channel is provided through the inside of the collector, located at the bottom of the V-shaped collection groove. The main collection channel is connected to multiple arc-shaped air guide channels through symmetrically distributed straight air guide channels located inside the collector.

[0012] In the aforementioned heat exchange tube laser cutting fixture, the collector body has an exhaust channel corresponding to the upper and lower air inlet channel. The collector body has multiple material discharge channels that connect the main collection channel and the exhaust channel evenly from left to right. The collector body also has auxiliary collection channels that are staggered with the arc-shaped air guide channel and connected to the exhaust channel, and the auxiliary collection channels are oriented vertically.

[0013] In the aforementioned laser cutting fixture for heat exchange tubes, the slag removal assembly includes a main slag removal head and a stabilizing component. The main slag removal head and the stabilizing component are distributed vertically on the rear sidewall of the collection body, and the sealing component and the auxiliary slag removal head are distributed vertically on the front sidewall of the collection body. The main slag removal head, the stabilizing component, the auxiliary slag removal head, and the sealing component are all radially slidably connected to the collection body by springs.

[0014] In the aforementioned laser cutting fixture for heat exchange tubes, the driving assembly includes electric push rods, and multiple electric push rods are evenly installed on the right side wall of the second cover along the circumferential direction. The right side wall of the telescopic ends of the multiple electric push rods is fixedly connected to a connecting ring, and a dustproof shell is detachably installed on the side wall of the second cover, which is located outside the electric push rods and the connecting ring.

[0015] In the aforementioned heat exchange tube laser cutting fixture, the air inlet channel and the air extraction channel are connected to an external air pump through an air inlet pipe and a chip extraction pipe, respectively. Both the air inlet pipe and the chip extraction pipe pass through the cover and the dust cover on the left and right sides, and the bottom of the traction rod is provided with a slot for the air inlet pipe and the chip extraction pipe to pass through.

[0016] In the aforementioned laser cutting fixture for heat exchange tubes, the front and rear side walls of the collector are fixedly connected with fixed blocks corresponding to the main slag removal head, stabilizing component, auxiliary slag removal head, and sealing component. Sliding blocks are slidably connected to the fixed blocks from left to right. A connecting rod corresponding to the connecting ring is detachably installed on the right side wall of the sliding block. The connecting rod slides through the second sealing cover from left to right. The connecting rods corresponding to the main slag removal head, auxiliary slag removal head, and sealing component have the same length. The connecting rod corresponding to the stabilizing component is shorter than the connecting rods corresponding to the main slag removal head, auxiliary slag removal head, and sealing component.

[0017] In the aforementioned laser cutting fixture for heat exchange tubes, multiple wedge blocks are uniformly fixedly connected to the side of the slider away from the collector, and the side of the wedge blocks away from the slider is inclined. Multiple wedge blocks are fixedly connected to the side of the main slag removal head, the stabilizing component, the auxiliary slag removal head, and the sealing component near the corresponding fixed block, and the side of the wedge blocks away from the corresponding main slag removal head, the stabilizing component, the auxiliary slag removal head, and the sealing component is inclined in a way that matches the wedge blocks.

[0018] Compared with existing technologies, the advantages of this invention are: 1. By using isolation and scraping methods, the effective wall thickness of the lower part is protected, the effect of slag removal is enhanced, and the quality of pipe cutting is improved. The V-shaped collection groove facilitates the comprehensive collection of splashed slag, and the collection body isolates the upper and lower parts of the pipe to be cut, effectively preventing the lower pipe wall from being burned or melted, ensuring the structural strength and pressure-bearing capacity of the pipe; the triangular scraper of the main slag removal head is used for primary slag removal treatment, and when it rotates to the auxiliary slag removal head, the triangular scraper of the auxiliary slag removal head is used for secondary slag removal treatment.

[0019] 2. By employing a combined approach of internal gas and auxiliary gas coaxially ejected from the laser cutting head, heat accumulation on the inner wall of the pipe during cutting is suppressed. This helps to inhibit unstable plasma and fumes formed inside the pipe due to multiple reflections, automatically collecting molten slag and discharging it uniformly outside the processing equipment. This prevents molten slag from being blown up from the V-shaped collection tank, causing secondary pollution and affecting the cutting quality. A portion of the gas is guided by an arc-shaped gas guide channel to the upper area of ​​the V-shaped collection tank, significantly reducing the temperature in that area. When the cooling inert gas passes through the straight gas guide channel, it alleviates the continuous heat impact on the tank wall of the V-shaped collection tank, which helps to extend the service life of the collector and the V-shaped collection tank.

[0020] 3. By cooperating with the stabilizing component, the main slag removal head, the auxiliary slag removal head, and the sealing component, the finished pipe fitting that is about to fall off is internally supported from four directions, preventing the chipping of the cut due to gravity and the release of residual stress when the cutting is about to be completed, and effectively reducing the generation of burrs at the cut. Attached Figure Description

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure.

[0022] Figure 2 This is a schematic diagram of the feeding clamping mechanism and the internal processing mechanism.

[0023] Figure 3 This is a partial structural diagram of the internal processing mechanism.

[0024] Figure 4 This is a partial structural breakdown diagram of the internal processing mechanism.

[0025] Figure 5 This is a partial structural diagram of the slag collection component.

[0026] Figure 6 for Figure 5 A structural diagram from another perspective.

[0027] Figure 7 This is a schematic diagram of the cross-sectional structure of the collector.

[0028] Figure 8 This is a schematic diagram of another cross-sectional structure of the collection body.

[0029] Figure 9 This is a schematic diagram of the structure before the stabilizing component moves towards the inner wall of the pipe.

[0030] Figure 10 This is a schematic diagram of the structure after the stabilizing component moves towards the inner wall of the pipe.

[0031] Figure 11 This is a partial structural breakdown diagram of the driving component.

[0032] Figure 12 This is a schematic diagram of the structure before wedge one pushes wedge two to move.

[0033] Figure 13 This is a schematic diagram of the structure after wedge one pushes wedge two to move.

[0034] In the diagram: 1. Frame; 2. Feeding and clamping mechanism; 3. Laser cutting head; 4. Internal processing mechanism; 41. Support assembly; 411. Cover one; 412. Collector; 413. Cover two; 42. Slag collection assembly; 421. Air inlet channel; 422. Arc-shaped air guide channel; 423. Straight air guide channel; 424. Main collection channel; 425. Material discharge channel; 426. Air extraction channel; 427. Auxiliary collection channel; 43. Slag removal assembly; 431. Main slag removal head; 432. Stabilizer; 433. Auxiliary slag removal head; 434. Sealing component; 44. Drive assembly; 441. Dustproof shell; 442. Electric actuator; 443. Connecting ring; 444. Connecting rod; 445. Slider; 446. Wedge one; 447. Fixing block; 448. Wedge two; 45. Traction rod. Detailed Implementation

[0035] 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.

[0036] Reference Figures 1 to 2 A laser cutting fixture for heat exchange tubes includes a frame 1. The frame 1 is equipped with a feeding and clamping mechanism 2 located on the left and a laser cutting head 3 located in the middle. The right side of the frame 1 is equipped with an internal processing mechanism 4 via a cylinder drive mechanism (existing mature technology, not described in detail here, and not shown in the figure). To the left of the feeding and clamping mechanism 2 is a feeding mechanism (existing mature technology, not described in detail here, and not shown in the figure) for feeding the tube to be cut. The feeding and clamping mechanism 2 is used to clamp the tube to be cut fed from left to right by the feeding mechanism. The laser cutting head 3 is used to perform laser cutting operations on the tube.

[0037] The tube to be cut is fed through the left feeding mechanism, and the tube to be cut is clamped and limited by the feeding clamping mechanism 2. At the same time, the right internal processing mechanism 4 extends into the interior of the tube to be cut. Finally, the tube is clamped by the feeding clamping mechanism 2 and rotated circumferentially. The laser cutting head 3 performs laser cutting operation in coordination. The laser cutting head 3 coaxially sprays auxiliary gas to prevent heat accumulation and conducts it downward, and blows away the molten material.

[0038] Reference Figures 1 to 3 The internal processing mechanism 4 includes a traction rod 45 fixedly connected to the output end of the cylinder drive mechanism. A support assembly 41 is provided on the traction rod 45. A slag collection assembly 42 and a slag removal assembly 43 are provided on the support assembly 41. A drive assembly 44 is provided on the support assembly 41, the slag removal assembly 43 and the traction rod 45.

[0039] Reference Figures 3 to 4 The support component 41 includes a second cover 413. The left end of the traction rod 45 is fixedly connected to the second cover 413. The left side wall of the second cover 413 is detachably fitted with a collection body 412. The left side wall of the collection body 412 is detachably fitted with a first cover 411. The collection body 412 is a columnar body with a V-shaped collection groove opened from left to right to the top.

[0040] Reference Figures 3 to 8 The slag collection assembly 42 includes arc-shaped air guiding channels 422. Multiple arc-shaped air guiding channels 422 are evenly distributed from left to right inside the collection body 412. Both ends of the arc-shaped air guiding channels 422 are connected to V-shaped collection grooves. An air inlet channel 421 oriented left-right is provided inside the collection body 412, connecting to the bottom of the multiple arc-shaped air guiding channels 422. A main collection channel 424, located at the bottom of the V-shaped collection groove, is provided through the left-right passage inside the collection body 412. The main collection channel 424 connects to the multiple arc-shaped air guiding channels 422. The two sides are connected by straight air guide channels 423 that are symmetrically distributed front and back. The straight air guide channels 423 are opened inside the collection body 412. The collection body 412 has an exhaust channel 426 that corresponds to the air inlet channel 421 vertically. The collection body 412 has multiple material drop channels 425 that connect the main collection channel 424 and the exhaust channel 426 evenly distributed from left to right. The collection body 412 has auxiliary collection channels 427 that are staggered with the arc-shaped air guide channels 422 and connected to the exhaust channel 426. The auxiliary collection channels 427 are oriented vertically.

[0041] Reference Figures 3 to 10 The slag removal assembly 43 includes a main slag removal head 431 and a stabilizing component 432. The main slag removal head 431 and the stabilizing component 432 are distributed vertically on the rear side wall of the collection body 412, and the sealing component 434 and the auxiliary slag removal head 433 are distributed vertically on the front side wall of the collection body 412. The main slag removal head 431, the stabilizing component 432, the auxiliary slag removal head 433 and the sealing component 434 are all radially slidably connected to the collection body 412 by a spring (not shown in the figure).

[0042] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 11 , Figure 12 and Figure 13The drive assembly 44 includes electric push rods 442. Multiple electric push rods 442 are evenly installed on the right side wall of the cover 413 along the circumferential direction. The right side wall of the telescopic ends of the multiple electric push rods 442 are fixedly connected to a connecting ring 443. A dustproof shell 441 is detachably installed on the side wall of the cover 413 and is located outside the electric push rods 442 and the connecting ring 443. The air intake channel 421 and the air extraction channel 426 are respectively connected to an external air pump (not shown in the figure) through an air intake pipe (not shown in the figure) and a chip extraction pipe (not shown in the figure). The air intake pipe and the chip extraction pipe pass through the cover 413 and the dustproof shell 441 from the left and right. The bottom of the traction rod 45 is provided with a slot for the air intake pipe and the chip extraction pipe to pass through.

[0043] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 11 , Figure 12 and Figure 13 The front and rear side walls of the collecting body 412 are fixedly connected with fixed blocks 447 corresponding to the main slag removal head 431, the stabilizing component 432, the auxiliary slag removal head 433, and the sealing component 434. The fixed blocks 447 are slidably connected to the sliders 445. The right side wall of the sliders 445 is detachably installed with a connecting rod 444 corresponding to the connecting ring 443. The connecting rod 444 slides through the second cover 413. The connecting rods 444 corresponding to the main slag removal head 431, the auxiliary slag removal head 433, and the sealing component 434 have the same length. The connecting rod 444 corresponding to the stabilizing component 432 is shorter than the connecting rod 444 corresponding to the main slag removal head 431, the auxiliary slag removal head 433, and the sealing component 434.

[0044] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 11 , Figure 12 and Figure 13 Multiple wedges 446 are uniformly fixedly connected to the side of slider 445 away from collector 412. The side of wedge 446 away from slider 445 is inclined. Multiple wedges 448 are fixedly connected to the side of main slag removal head 431, stabilizer 432, auxiliary slag removal head 433 and sealing member 434 near the corresponding fixed block 447. The side of wedge 448 away from the corresponding main slag removal head 431, stabilizer 432, auxiliary slag removal head 433 and sealing member 434 is inclined to match wedge 446.

[0045] The internal processing mechanism 4 extends into the pipe to be cut. The specific operation is as follows: The traction rod 45 drives the support assembly 41, slag collection assembly 42, slag removal assembly 43 and drive assembly 44 into the pipe to be cut through the cylinder drive mechanism. The first cap 411, the collection body 412 and the second cap 413 enter in sequence. After entering, the V-shaped collection groove of the collection body 412 faces upward, and the area above the V-shaped collection groove covers the cutting position of the laser cutting head 3, so as to collect the splashed molten slag comprehensively. The collection body 412 isolates the upper and lower parts of the pipe to be cut, effectively preventing the lower pipe wall from being burned or melted, protecting the effective wall thickness of the lower part, and ensuring the structural strength and pressure bearing capacity of the pipe.

[0046] It should be noted that the diameters of cap 1 (411) and cap 2 (413) are the same and both are smaller than the inner diameter of the pipe to be cut, in order to ensure smooth entry into the pipe to be cut.

[0047] The right side wall of the telescopic end of the electric actuator 442 retracts, causing the connecting ring 443 to move towards the sealing cover 413. At the same time, the connecting ring 443 moves to the left, pushing the corresponding connecting rods 444 of the main slag removal head 431, the auxiliary slag removal head 433, and the sealing component 434 to move synchronously.

[0048] Taking the main slag removal head 431 as an example (e.g.) Figure 11 , Figure 12 and Figure 13 As shown), connecting rod 444 pushes slider 445 to slide to the left on fixed block 447. The inclined surface of wedge one 446 is in close contact with the inclined surface of wedge two 448, and gradually pushes wedge two 448 to drive the main slag removal head 431 to slide away from the collecting body 412 and closer to the inner wall of the pipe to be cut. The spring is stretched until the main slag removal head 431 moves to a state that is almost in close contact with the inner wall of the pipe to be cut. Similarly, the auxiliary slag removal head 433 and the sealing part 434 move synchronously with the main slag removal head 431 to a state that is almost in close contact with the inner wall of the pipe to be cut (e.g. Figure 7 (As shown).

[0049] It should be noted that the electric actuator 442 and the spring are both made of high-temperature resistant materials. The electric actuator 442, the connecting ring 443, and the joints of the air intake channel 421, the air extraction channel 426 and the corresponding air intake pipe and chip extraction pipe are all protected by the dust cover 441 to reduce the impact of molten slag and debris on their service life.

[0050] The main slag removal head 431 and the sealing component 434 play a certain sealing role between the collecting body 412 and the pipe to be cut, so that the upper area of ​​the V-shaped collecting trough and the pipe to be cut form a nearly closed processing space.

[0051] During the cutting operation, the pipe rotates, and the laser cutting head 3 works in conjunction to perform laser cutting, spraying the generated molten slag into the pipe. The specific operation is as follows: both the main slag removal head 431 and the auxiliary slag removal head 433 are equipped with triangular scrapers. When the pipe rotates clockwise relative to the collecting body 412, the cut portion first passes through the main slag removal head 431, where the triangular scraper performs primary slag scraping. When it rotates to the auxiliary slag removal head 433, the triangular scraper performs secondary slag scraping, enhancing the processing effect.

[0052] Cooling inert gas is introduced into the intake channel 421 through the intake pipe. A portion of the gas is blown towards the area above the V-shaped collection groove through the arc-shaped air guide channel 422, which greatly reduces the temperature in that area and suppresses the heat accumulation on the inner wall when cutting the pipe.

[0053] It should be noted that the airflow velocity of the cooling inert gas blown out of the air inlet pipe into the arc-shaped air guide channel 422 is less than the gas flow velocity of the auxiliary gas ejected coaxially from the laser cutting head 3. Therefore, it has little impact on the auxiliary gas ejected coaxially from the laser cutting head 3 and will not cause any impact on the auxiliary gas.

[0054] Another part of the cooling inert gas passes through the straight gas channel 423, which is connected to the arc-shaped gas channel 422. When the cooling inert gas passes through the straight gas channel 423, it plays a certain role in cooling the wall of the V-shaped collection groove. When the laser cutting head 3 is working continuously, it alleviates the heat impact that the wall of the V-shaped collection groove is continuously subjected to, which is conducive to extending the service life of the collector 412 and the V-shaped collection groove.

[0055] The gas in the straight gas guide channel 423 and the gas in the arc-shaped gas guide channel 422 eventually flow to the V-shaped collection tank and the main collection channel 424, and is then drawn away from the collection body 412 through the material drop channel 425 and the extraction channel 426 (e.g. Figure 7 The gas flow direction shown helps to suppress unstable plasma and smoke formed inside the pipe due to multiple reflections; and after the molten slag falls into the V-shaped collection tank, it can also be drawn away from the collection body 412 through the material drop channel 425 and the air extraction channel 426 by the gas being drawn in, and be collected uniformly, so as to avoid the molten slag in the V-shaped collection tank from being blown up and causing secondary pollution, which would affect the cutting quality.

[0056] During the suction process in the suction channel 426, molten slag and debris scraped off from the secondary slag removal area can also be suctioned through the auxiliary collection channel 427 to effectively treat the debris on the inner wall of the pipe fitting (e.g., Figure 8 (As shown).

[0057] When the laser cutting head 3 makes a nearly complete circumferential cut on the pipe fitting, and the pipe fitting is connected to the main body by only a tiny bit of material, the telescopic end of the electric actuator 442 is driven to move to the left again, causing the connecting ring 443 to approach and push multiple connecting rods 444 to move. First, the connecting rod 444 corresponding to the stabilizer 432 is pushed, and the connecting rod 444 drives the corresponding slider 445 to slide in the fixed block 447. The first wedge 446 pushes the corresponding second wedge 448 on the stabilizer 432 to move, and the stabilizer 432 moves away from the collector 412 and is pressed against the inner wall of the pipe fitting. Furthermore, after the connecting rod 444 corresponding to the main slag removal head 431, the auxiliary slag removal head 433 and the sealing member 434 are pushed, the main slag removal head 431, the auxiliary slag removal head 433 and the sealing member 434 are also completely pressed against the pipe wall.

[0058] The stabilizing component 432, together with the main slag removal head 431, the auxiliary slag removal head 433, and the sealing component 434, provides internal support for the soon-to-be-detached finished pipe fitting from four directions. This prevents chipping due to gravity and residual stress release when the cutting is nearing completion, effectively reducing the generation of burrs at the cut (such as...). Figure 9 , Figure 10 (As shown).

[0059] Finally, the telescopic end of the electric actuator 442 moves to the right and resets, and the main slag removal head 431, the stabilizing component 432, the auxiliary slag removal head 433, and the sealing component 434 are all reset. The finished pipe fitting is then removed by an externally installed robotic arm.

[0060] In this invention, the support component 41 isolates the upper and lower parts of the pipe to be cut while comprehensively collecting splashed slag and debris, effectively preventing the lower pipe wall from being burned or melted, and protecting the effective wall thickness of the lower part; the slag collection component 42 uses cooling inert gas to cool the area below the cutting position while using airflow to converge and guide the slag and debris out of the support component 41, avoiding slag from being blown up and causing secondary pollution, which would affect the cutting quality; the slag removal component 43 performs two-stage mechanical slag scraping by adjusting its position inside the pipe to be cut and provides internal support for the detached finished pipe, preventing chipping due to gravity and residual stress release when the cutting is about to be completed, and effectively reducing the generation of burrs at the cut; although this invention adds an internal processing mechanism 4 compared to the prior art, increasing production costs, the technical solution of this invention can effectively improve the cutting quality of the pipe and automatically collect slag. From a long-term economic perspective, the equipment cost of the increased structure compared to the prior art is negligible.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A heat exchange tube laser cutting tool comprising a frame, characterized in that, The rack is provided with a feeding and clamping mechanism on the left part and a laser cutting head on the middle part, and an inner processing mechanism is mounted on the right part of the rack through a cylinder driving mechanism, and a feeding mechanism for feeding the pipe to be cut is arranged on the left side of the feeding and clamping mechanism, the feeding and clamping mechanism is used for clamping the pipe to be cut fed from left to right by the feeding mechanism, and the laser cutting head is used for laser cutting operation on the pipe; The inner processing mechanism comprises a traction rod fixedly connected with the output end of the cylinder driving mechanism, a support assembly is arranged on the traction rod, a slag collecting assembly and a slag removing assembly are arranged on the support assembly, and a driving assembly is arranged on the support assembly, the slag removing assembly and the traction rod; The support assembly is used for isolating the upper part and the lower part of the pipe to be cut and comprehensively collecting the molten slag and the debris, the slag collecting assembly is used for cooling the lower part of the cutting position by using the cooling inert gas and guiding the molten slag and the debris out of the support assembly by using airflow convergence, and the slag removing assembly is used for two-stage mechanical slag scraping treatment by adjusting the position in the pipe to be cut and internally supporting the separated finished pipe; The support assembly comprises a cover two, the left end of the traction rod is fixedly connected with the cover two, a collecting body is detachably mounted on the left side wall of the cover two, a cover one is detachably mounted on the left side wall of the collecting body, and the collecting body is a columnar body with left-right orientation and a v-shaped collecting groove opened at the top; The slag collecting assembly comprises an arc-shaped air guide channel, a plurality of arc-shaped air guide channels are uniformly arranged in the inside of the collecting body from left to right, the two end parts of the arc-shaped air guide channel are communicated with the v-shaped collecting groove, an air inlet channel is arranged in the inside of the collecting body in left-right orientation, and the air inlet channel is communicated with the bottom of the plurality of arc-shaped air guide channels; an air outlet channel corresponding to the air inlet channel in up-down orientation is arranged in the inside of the collecting body; The slag removing assembly comprises a main slag removing head and a stabilizing piece, the rear side wall of the collecting body is correspondingly provided with the main slag removing head and the stabilizing piece in up-down orientation, the front side wall of the collecting body is correspondingly provided with a blocking piece and an auxiliary slag removing head in up-down orientation, and the main slag removing head, the stabilizing piece, the auxiliary slag removing head and the blocking piece are all radially connected to the collecting body through springs; The driving assembly comprises an electric push rod, a plurality of electric push rods are uniformly arranged on the right side wall of the cover two in the circumferential direction, the extension end right side wall of the plurality of electric push rods is fixedly connected with a connecting ring, and a dustproof shell arranged outside the electric push rod and the connecting ring is detachably mounted on the side wall of the cover two; The front and rear side walls of the collecting body are fixedly connected with fixed blocks corresponding to the main slag removing head, the stabilizing piece, the auxiliary slag removing head and the blocking piece, the fixed blocks are slidably connected with sliding blocks in left-right orientation, the right side wall of the sliding block is detachably mounted with a connecting rod corresponding to the connecting ring, the connecting rod slidably penetrates the cover two in left-right orientation, the lengths of the connecting rods corresponding to the main slag removing head, the auxiliary slag removing head and the blocking piece are consistent, and the length of the connecting rod corresponding to the stabilizing piece is shorter than those of the connecting rods corresponding to the main slag removing head, the auxiliary slag removing head and the blocking piece. The plurality of wedge blocks one are uniformly and fixedly connected to the side of the sliding block away from the collection body, and the side of the wedge block one away from the sliding block is inclined; the plurality of wedge blocks two are fixedly connected to the side of the main slag removal head, the stabilizing member, the auxiliary slag removal head and the blocking member close to the corresponding fixed blocks, and the side of the wedge block two away from the main slag removal head, the stabilizing member, the auxiliary slag removal head and the blocking member is inclined and matched with the wedge block one.

2. The heat exchange tube laser cutting tooling of claim 1, wherein, The inside of the collection body is provided with a main collection channel at the bottom of the V-shaped collection groove, and the main collection channel and the plurality of arc-shaped air guide channels are communicated through the front and back symmetrical straight air guide channels.

3. The heat exchange tube laser cutting tooling of claim 2, wherein, The inside of the collection body is uniformly provided with a plurality of blanking channels from left to right, which are communicated with the main collection channel and the air extraction channel, and the collection body is provided with auxiliary collection channels which are staggered with the arc-shaped air guide channels and communicated with the air extraction channel, and the auxiliary collection channels are upwardly oriented.

4. The heat exchange tube laser cutting tooling of claim 3, wherein, The air inlet channel and the air extraction channel are connected with the external air pump through the air inlet pipe and the chip extraction pipe respectively, and the air inlet pipe and the chip extraction pipe penetrate through the second sealing cover and the dustproof shell; the bottom of the traction rod is provided with a slot for the air inlet pipe and the chip extraction pipe.

Images