Thick plate laser flame composite thermal cutting gun

Abstract

The utility model discloses a laser flame composite thermal cutting gun for thick plates, and relates to the technical field of thermal cutting. The integrated split-flow cutting torch comprises an integrated split-flow mechanism, a transition sleeve, a cutting torch main body and a composite cutting torch mechanism, the integrated split-flow mechanism comprises an upper transition plate and a lower transition plate which are fixed with each other, and the upper transition plate and the lower transition plate are respectively provided with an upper axis opening and a lower axis opening. The novel thermal cutting gun with the laser and flame composite heat source is designed, a laser and flame coaxial mode is adopted, heating of a steel plate and protection of cutting oxygen flow are better facilitated, the activation of oxygen to iron is improved due to irradiation of laser to high-purity oxygen, the progress of iron-oxygen combustion reaction is promoted, and the service life of the steel plate is prolonged. Compared with a cutting method with a single heat source, the cutting method has the obvious advantages that the cutting starting and preheating time can be shortened, the cutting thickness of the workpiece is increased, and the cutting speed and the cutting quality can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal cutting, in particular to a thick plate laser flame composite thermal cutting cutting gun. Background Art

[0002] There are three commonly used metal thermal cutting methods in the industrial field, namely oxygen cutting, plasma arc cutting and laser cutting. The characteristics of the three are:

[0003] Oxygen cutting is a cutting method that utilizes the combustion reaction of iron and oxygen and the generated reaction heat. It has the characteristics of simple equipment, flexible operation, good cutting section quality, large cutting thickness, and low comprehensive operating cost. It is the most commonly used thermal cutting process method for cutting carbon steel and low alloy steel. Its maximum cutting thickness can reach about 3500mm.

[0004] Plasma arc cutting is a thermal cutting method that uses a high-temperature, high-speed plasma flow formed by a compressed plasma arc as a heat source for melting and cutting. It has many characteristics such as fast cutting speed, small thermal deformation, and the ability to cut a variety of materials such as carbon steel, alloy steel, stainless steel, copper, aluminum, plastic, etc. The cutting thickness can reach 80-160mm.

[0005] Laser cutting is a cutting method that uses a high-energy-density laser beam to vaporize, melt or oxidize the material. It has the characteristics of fast cutting speed, small thermal deformation, narrow incision and high cutting accuracy. The cutting thickness can reach 25-50mm.

[0006] In summary, each thermal cutting process method has its own advantages and disadvantages and applicable fields, and can be equipped with manual, semi-automatic, automatic cutting and robot operation platforms. Laser cutting is mainly used on automated platforms, and manual cutting is less used. In current engineering applications, oxygen cutting is mainly used for medium and thick plate cutting, plasma arc cutting is mainly used for medium plate cutting, and laser cutting is mainly used in high-precision, small deformation and high-quality fields.

[0007] The disadvantage of the laser cutting method is the technical problem of cutting smaller thicknesses, while the disadvantage of the oxygen cutting method is the technical problem of low heat dissipation efficiency. If the two heat sources are used in combination, the preheating time can be reduced and it can be applied to thicker workpieces. Therefore, designing a cutting gun that can be used with two heat sources at the same time is a problem that needs to be solved by the staff in this field. Utility Model Content

[0008] The purpose of the utility model is to provide a thick plate laser flame composite thermal cutting cutting gun. By designing a new type of laser flame composite heat source thermal cutting cutting gun, the laser and flame are coaxially connected, which is more conducive to heating the steel plate and protecting the cutting oxygen flow. The laser irradiation of high-purity oxygen improves the activation of oxygen to iron, promotes the process of iron-oxygen combustion reaction, effectively reduces the preheating time for cutting, and even does not require preheating to start cutting. Compared with the cutting method of a single heat source, it has obvious advantages, can shorten the preheating time for cutting, increase the cutting thickness of the workpiece, and can improve the cutting speed and cutting quality.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is a thick plate laser flame composite thermal cutting torch, comprising an integrated flow dividing mechanism, a transition sleeve, a cutting torch body and a composite cutting torch mechanism;

[0011] The integrated flow diversion mechanism comprises an upper transition plate and a lower transition plate fixed to each other;

[0012] The upper transition plate and the lower transition plate are respectively provided with an upper axial opening and a lower axial opening, and an integrated block is fixed on the outer side of the upper transition plate;

[0013] The top of the integrated block is connected to two oxygen interfaces, and the outer side of the integrated block is fixed with a preheating oxygen copper tube and a fuel gas copper tube;

[0014] The transition sleeve comprises an upper cylinder and a lower cylinder connected up and down, the upper cylinder is fixed in the lower shaft center opening and a support ring is provided at the inner bottom end, a flange is fixed on the top surface of the upper transition plate, a reverse flow ring is fixed between the flange and the support ring, an air cavity is formed between the reverse flow ring, the upper shaft center opening and the upper cylinder, and a plurality of reverse flow ports are provided at the top of the reverse flow ring;

[0015] An oxygen passage is provided between the oxygen interface and the air cavity;

[0016] The cutting torch body is provided with an upper cone opening at the axis center, an upper notch and a lower notch are provided in the upper cone opening, a copper tube interface connected to the upper notch and the lower notch is provided on the peripheral side of the cutting torch body, and the bottom ends of the preheating oxygen copper tube and the fuel gas copper tube are respectively connected to the two copper tube interfaces;

[0017] The composite cutting torch mechanism comprises a ceramic ring and a cutting nozzle assembly, a height adjustment ring is fixed to the bottom end of the ceramic ring, the ceramic ring is fixed to the bottom end of the cutting torch body, and the cutting nozzle assembly is fixed between the ceramic ring and the cutting torch body;

[0018] A mixing chamber is arranged in the cutting nozzle assembly, two circles of air inlet grooves are arranged at the top of the cutting nozzle assembly and are respectively connected with the upper notch and the lower notch, an exhaust groove is arranged on the peripheral side surface of the bottom end of the cutting nozzle assembly and is connected with the mixing chamber, and a core opening is arranged at the axis center of the cutting nozzle assembly.

[0019] Furthermore, oxygen is input through the two oxygen interfaces, and the oxygen is discharged from the bottom end of the cutting nozzle assembly after passing through the oxygen interface, the integrated block, the oxygen passage, the air cavity, the backflow port, the inner hole of the backflow ring, the inner hole of the transition sleeve, the upper cone port and the core port in sequence.

[0020] Furthermore, preheated oxygen and fuel gas are respectively input into the top ends of the preheated oxygen copper tube and the fuel gas copper tube, and the preheated oxygen passes through the preheated oxygen copper tube, the copper tube interface, the upper notch, and the air inlet groove in sequence and is discharged into the mixing chamber, and the fuel gas passes through the fuel gas copper tube, another copper tube interface, the lower notch, and another circle of air inlet grooves in sequence and is discharged into the mixing chamber, and the preheated oxygen and fuel gas in the mixing chamber are mixed and discharged from the exhaust groove.

[0021] Furthermore, it also includes a cooling passage, wherein the cooling passage is composed of a first air port, a second air port, a third air port, a fourth air port and a fifth air port;

[0022] The first air port is arranged in the wall of the ceramic ring, a spacing cavity with a bottom end extending to the bottom surface of the height adjustment ring is formed between the ceramic ring and the cutting nozzle assembly, and a diversion port communicating with the spacing cavity and the first air port is arranged on the inner side of the ceramic ring;

[0023] The top surface of the height adjustment ring is provided with an annular groove connected to the first air port, and the height adjustment ring is evenly provided with a plurality of micro-ports connected to the annular groove;

[0024] The top of the cutting torch body is provided with a confluence groove, and the second gas port is arranged in the wall of the cutting torch body and is connected with the confluence groove and the first gas port;

[0025] The third air port and the fourth air port are respectively arranged in the wall of the lower cylinder and the upper cylinder, and the two ends of the third air port are connected to the fourth air port and the confluence groove;

[0026] The fifth air port is arranged in the upper transition plate, the bottom surface of the upper transition plate is provided with a bottom port communicating with the fifth air port and the fourth air port, and the integrated block is provided with a cooling gas interface connected with the fifth air port.

[0027] Furthermore, the ceramic ring, the cutting torch body and the wall of the upper cylinder are all provided with threading holes, the wall of the lower cylinder is provided with a C-type jacket, the C-type jacket is not connected to the third gas port, and a wire is connected to the height adjustment ring.

[0028] Furthermore, a through area is provided on the upper transition plate, and an inner recess is provided on the inner side of the through area, extending to the threading port at the top end of the upper cylinder. A TG connector is connected to the integrated block, and the wire is connected to the TG connector after passing through several threading ports, a C-shaped jacket, the inner recess and the through area.

[0029] Furthermore, a pressure seat is fixed on the outside of the integrated block, the top ends of the preheating oxygen copper tube and the gas copper tube are fixed between the pressure seat and the integrated block, and the pressure seat and the integrated block are provided with arc-shaped openings matching with the preheating oxygen copper tube and the gas copper tube on opposite sides.

[0030] Furthermore, an outer flange is provided at the top of the backflow ring, a positioning port that cooperates with the outer flange is provided at the axial center of the bottom surface of the flange, the backflow port is arranged on the outer flange, and a positioning ring is provided at the bottom end of the backflow ring. The outer diameter of the positioning ring is consistent with the inner diameter of the upper cylinder and fits with the upper surface of the support ring.

[0031] Furthermore, the connection between the cutting torch body and the lower barrel is fixed by a connecting nut, and the connection between the ceramic ring and the cutting torch body is fixed by a ceramic ring nut.

[0032] Furthermore, sealing grooves and sealing members are provided at the joints between the flange, the upper transition plate, the lower transition plate, the upper cylinder, the lower cylinder, the cutting torch body and the ceramic ring.

[0033] The utility model has the following beneficial effects:

[0034] 1. The utility model designs a new type of thermal cutting torch with a laser flame composite heat source, and adopts a coaxial method of laser and flame, which is more conducive to heating the steel plate and protecting the cutting oxygen flow. The laser irradiation of high-purity oxygen improves the activation of oxygen to iron, promotes the process of iron-oxygen combustion reaction, and effectively reduces the preheating and cutting time. The cutting thickness can reach 50-260mm, and the cutting speed can reach 100-600mm / min. It can even start cutting directly without preheating. Compared with the cutting method with a single heat source, it has obvious advantages, can shorten the preheating time for cutting, increase the cutting thickness of the workpiece, and can improve the cutting speed and cutting quality. It has the advantage of less slag, and the safety and stability meet the production and use requirements.

[0035] 2. The utility model combines laser and flame heat sources in a smaller gun shell, which will not take up too much space, and the overall profile of the cutting oxygen channel is straight, with reasonable design, small resistance, and low processing difficulty, so that the cutting oxygen flow speed can reach a higher speed, and the cutting oxygen flow speed can achieve supersonic speed, which can reach 1.8 Mach, effectively improving the kinetic energy of the cutting oxygen flow, thereby improving the penetration ability of the cutting steel billet and the slag discharge ability, and improving the cutting quality.

[0036] 3. The utility model can be assembled into a cooling passage by designing air ports in each component. The air can be diverted at the position of the height adjustment ring and discharged from the bottom of the spacer cavity and the micro-port. The gun tip can be cooled and wrapped around the outside of the laser column to ensure safety during use.

[0037] 4. The utility model designs threading holes in each component, which can be used to guide and protect the wires on the height adjustment ring. The height adjustment ring is a capacitor product that can detect the distance between the two metal workpieces, thereby playing a role in measuring and adjusting the height, thereby improving cutting accuracy.

[0038] 5. The utility model improves safety by concentrating the joints used for the cutting gun at the position of the integrated block, away from the high-temperature area of ​​the gun head. The joints are concentrated in one place, with a compact structure, which is conducive to the positioning and connection of each gas pipe and convenient for subsequent maintenance and inspection.

[0039] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 This is a schematic diagram of the structure of a thick plate laser flame composite thermal cutting cutting gun of the utility model;

[0042] Figure 2 It is the structural explosion diagram of the utility model;

[0043] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0044] Figure 4 It is a structural schematic diagram of an upper transition plate, a lower transition plate, an upper cylinder, a lower cylinder and a connecting nut from a bottom-up perspective;

[0045] Figure 5 for Figure 4 A structural cross-sectional view of the middle cooling gas interface, the fifth gas port and the fourth gas port;

[0046] Figure 6 for Figure 4 Structural cross-sectional view of the threading openings on the upper and lower cylinders;

[0047] Figure 7 This is a schematic diagram of the structure of the lower cylinder after the bottom plate is removed;

[0048] Figure 8 It is a structural schematic diagram of the cutting torch body and the compound cutting torch mechanism;

[0049] Fig. 9 for Figure 8A structural cross-sectional view at the positions of the second gas port and the first gas port;

[0050] Fig.10 for Figure 8 Structural cross-sectional view of the main body of the cutting torch and the threading port on the ceramic ring;

[0051] Fig.11 This is a schematic diagram of the structure of the cutting nozzle assembly from a top view;

[0052] Fig.12 This is a schematic diagram of the structure of the cutting nozzle assembly from an upward perspective;

[0053] Fig.13 It is a structural schematic diagram of the height adjustment ring;

[0054] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0055] 1-cutting torch body, 2-upper transition plate, 3-lower transition plate, 4-integrated block, 5-upper cylinder, 6-lower cylinder, 7-ceramic ring, 8-cutting nozzle assembly, 9-height adjustment ring, 10-threading port, 11-connecting nut, 12-ceramic ring nut, 101-upper cone port, 102-upper notch, 103-lower notch, 104-copper pipe interface, 105-second gas port, 106-confluence groove, 201-upper axis port, 202-flange, 203-reverse flow ring, 204-gas cavity, 205-reverse flow port, 206-oxygen passage, 207-fifth gas port, 208-bottom port, 209-through area , 210-inner recess, 211-outer flange, 212-positioning ring, 301-lower shaft center mouth, 401-TG joint, 402-oxygen interface, 403-preheating oxygen copper tube, 404-fuel gas copper tube, 405-cooling gas interface, 406-arc-shaped mouth, 407-pressure seat, 501-support ring, 502-fourth gas port, 601-third gas port, 602-C-type jacket, 701-first gas port, 702-interval cavity, 703-diverter port, 801-mixing cavity, 802-inlet groove, 803-exhaust groove, 804-core mouth, 901-annular groove, 902-micro-mouth. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0057] See also Figure 1-13As shown, the utility model is a thick plate laser flame composite thermal cutting torch, comprising an integrated diversion mechanism, a transition sleeve, a cutting torch body 1 and a composite cutting torch mechanism;

[0058] The integrated flow dividing mechanism comprises an upper transition plate 2 and a lower transition plate 3 fixed to each other;

[0059] The upper transition plate 2 and the lower transition plate 3 are respectively provided with an upper axial opening 201 and a lower axial opening 301, and an integrated block 4 is fixed on the outer side of the upper transition plate 2;

[0060] The top of the integrated block 4 is connected to two oxygen interfaces 402, and the outer side of the integrated block 4 is fixed with a preheating oxygen copper tube 403 and a fuel gas copper tube 404;

[0061] The transition sleeve includes an upper cylinder 5 and a lower cylinder 6 connected up and down, the upper cylinder 5 is fixed in the lower shaft center opening 301 and a support ring 501 is provided at the inner bottom end, a flange 202 is fixed on the top surface of the upper transition plate 2, a reverse flow ring 203 is fixed between the flange 202 and the support ring 501, an air cavity 204 is formed between the reverse flow ring 203, the upper shaft center opening 201 and the upper cylinder 5, and a plurality of reverse flow ports 205 are provided at the top of the reverse flow ring 203;

[0062] An oxygen passage 206 is provided between the oxygen interface 402 and the air cavity 204;

[0063] The cutting torch body 1 is provided with an upper cone 101 at the axis, and an upper notch 102 and a lower notch 103 are provided in the upper cone 101. A copper pipe interface 104 connected to the upper notch 102 and the lower notch 103 is provided on the side of the cutting torch body 1. The bottom ends of the preheating oxygen copper pipe 403 and the gas copper pipe 404 are respectively connected to the two copper pipe interfaces 104.

[0064] The composite cutting torch mechanism comprises a ceramic ring 7 and a cutting nozzle assembly 8. A height adjustment ring 9 is fixed to the bottom end of the ceramic ring 7. The ceramic ring 7 is fixed to the bottom end of the cutting torch body 1. The cutting nozzle assembly 8 is fixed between the ceramic ring 7 and the cutting torch body 1.

[0065] A mixing chamber 801 is provided in the cutting nozzle assembly 8, two circles of air inlet grooves 802 are provided at the top of the cutting nozzle assembly 8 and are respectively connected to the upper notch 102 and the lower notch 103, exhaust grooves 803 are provided on the side surface of the bottom end of the cutting nozzle assembly 8 and are connected to the mixing chamber 801, and a core opening 804 is provided at the axis center of the cutting nozzle assembly 8.

[0066] Among them, two oxygen interfaces 402 input oxygen, and the oxygen passes through the oxygen interface 402, the integrated block 4, the oxygen passage 206, the air cavity 204, the backflow port 205, the inner hole of the backflow ring 203, the inner hole of the transition sleeve, the upper cone port 101 and the core port 804 in sequence, and is discharged from the bottom end of the cutting nozzle assembly 8.

[0067] Among them, preheated oxygen and fuel gas are respectively input into the top of the preheated oxygen copper tube 403 and the fuel gas copper tube 404. The preheated oxygen passes through the preheated oxygen copper tube 403, the copper tube interface 104, the upper notch 102, and the air inlet groove 802 in sequence and is discharged into the mixing chamber 801. The fuel gas passes through the fuel gas copper tube 404, another copper tube interface 104, the lower notch 103, and another circle of air inlet grooves 802 in sequence and is discharged into the mixing chamber 801. The preheated oxygen and fuel gas in the mixing chamber 801 are mixed and discharged from the exhaust groove 803.

[0068] Among them Figure 4-5 and Figure 7-9 As shown, a cooling passage is also included, and the cooling passage is composed of a first air port 701, a second air port 105, a third air port 601, a fourth air port 502 and a fifth air port 207;

[0069] The first air port 701 is arranged in the wall of the ceramic ring 7, and a spacing cavity 702 is formed between the ceramic ring 7 and the cutting nozzle assembly 8, the bottom end of which extends to the bottom surface of the height adjustment ring 9. The inner side of the ceramic ring 7 is provided with a diversion port 703 connected with the spacing cavity 702 and the first air port 701;

[0070] The top surface of the height adjustment ring 9 is provided with an annular groove 901 connected to the first air port 701, and a plurality of micro ports 902 connected to the annular groove 901 are evenly provided on the height adjustment ring 9;

[0071] A confluence groove 106 is provided at the top of the cutting torch body 1, and the second gas port 105 is provided in the wall of the cutting torch body 1 and is connected with the confluence groove 106 and the first gas port 701;

[0072] The third gas port 601 and the fourth gas port 502 are respectively arranged in the wall of the lower cylinder 6 and the upper cylinder 5, and both ends of the third gas port 601 are connected to the fourth gas port 502 and the confluence groove 106;

[0073] The fifth gas port 207 is arranged in the upper transition plate 2 . The bottom surface of the upper transition plate 2 is provided with a bottom port 208 communicating with the fifth gas port 207 and the fourth gas port 502 . The integrated block 4 is provided with a cooling gas interface 405 connected with the fifth gas port 207 .

[0074] Among them, 5-7 and Fig.10 As shown, the ceramic ring 7, the cutting torch body 1 and the wall of the upper cylinder 5 are all provided with threading holes 10, the wall of the lower cylinder 6 is provided with a C-type jacket 602, the C-type jacket 602 is not connected to the third gas port 601, and a wire is connected to the height adjustment ring 9.

[0075] Among them Figure 1-2As shown, a through area 209 is provided on the upper transition plate 2, and an inner recess 210 extending to the threading port 10 at the top of the upper cylinder 5 is provided on the inner side of the through area 209. A TG connector 401 is connected to the integrated block 4, and the wire is connected to the TG connector 401 after passing through a plurality of threading ports 10, a C-type jacket 602, the inner recess 210 and the through area 209.

[0076] Among them Figure 1-4 As shown, a pressure seat 407 is fixed on the outside of the integrated block 4, and the top ends of the preheating oxygen copper tube 403 and the gas copper tube 404 are fixed between the pressure seat 407 and the integrated block 4. The pressure seat 407 and the opposite side of the integrated block 4 are provided with an arc-shaped opening 406 that cooperates with the preheating oxygen copper tube 403 and the gas copper tube 404.

[0077] Among them Figure 3 As shown, an outer flange 211 is provided at the top of the backflow ring 203, a positioning port matching the outer flange 211 is provided at the axial center of the bottom surface of the flange 202, the backflow port 205 is arranged on the outer flange 211, and a positioning ring 212 is provided at the bottom end of the backflow ring 203. The outer diameter of the positioning ring 212 is consistent with the inner diameter of the upper cylinder 5 and fits with the upper surface of the support ring 501.

[0078] Among them Figure 1-2 and Figure 8 As shown, the connection between the cutting torch body 1 and the lower barrel 6 is fixed by a connecting nut 11, and the connection between the ceramic ring 7 and the cutting torch body 1 is fixed by a ceramic ring nut 12.

[0079] Among them, sealing grooves and sealing members are provided at the connections between the flange 202, the upper transition plate 2, the lower transition plate 3, the upper cylinder 5, the lower cylinder 6, the cutting torch body 1 and the ceramic ring 7.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0081] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A thick plate laser flame composite thermal cutting torch, characterized in that: It comprises an integrated flow dividing mechanism, a transition sleeve, a cutting torch body (1) and a composite cutting torch mechanism; The integrated flow-dividing mechanism comprises an upper transition plate (2) and a lower transition plate (3) fixed to each other; The upper transition plate (2) and the lower transition plate (3) are respectively provided with an upper axial opening (201) and a lower axial opening (301), and an integrated block (4) is fixed on the outer side of the upper transition plate (2); The top of the integrated block (4) is connected to two oxygen interfaces (402), and the outer side of the integrated block (4) is fixed with a preheating oxygen copper tube (403) and a fuel gas copper tube (404); The transition sleeve comprises an upper cylinder (5) and a lower cylinder (6) connected up and down, the upper cylinder (5) being fixed in the lower shaft center opening (301) and having a support ring (501) at the inner bottom end, a flange (202) being fixed on the top surface of the upper transition plate (2), a reverse flow ring (203) being fixed between the flange (202) and the support ring (501), an air cavity (204) being formed between the reverse flow ring (203), the upper shaft center opening (201) and the upper cylinder (5), and a plurality of reverse flow ports (205) being provided at the top end of the reverse flow ring (203); An oxygen passage (206) is provided between the oxygen interface (402) and the air cavity (204); The cutting torch body (1) is provided with an upper cone opening (101) at the axis thereof, and an upper notch (102) and a lower notch (103) are provided in the upper cone opening (101); a copper tube interface (104) connected to the upper notch (102) and the lower notch (103) is provided on the peripheral side of the cutting torch body (1); and the bottom ends of the preheating oxygen copper tube (403) and the gas copper tube (404) are respectively connected to the two copper tube interfaces (104); The composite cutting torch mechanism comprises a ceramic ring (7) and a cutting nozzle assembly (8); a height adjustment ring (9) is fixed to the bottom end of the ceramic ring (7); the ceramic ring (7) is fixed to the bottom end of the cutting torch body (1); and the cutting nozzle assembly (8) is fixed between the ceramic ring (7) and the cutting torch body (1); The cutting nozzle assembly (8) is provided with a mixing chamber (801) therein, the top of the cutting nozzle assembly (8) is provided with two circles of air inlet grooves (802) respectively connected with the upper notch (102) and the lower notch (103), the bottom of the cutting nozzle assembly (8) is provided with an exhaust groove (803) connected with the mixing chamber (801), and the cutting nozzle assembly (8) is provided with a core opening (804) at the axis center.

2. A thick plate laser flame composite thermal cutting torch according to claim 1, characterized in that: Oxygen is inputted through the two oxygen interfaces (402), and the oxygen passes through the oxygen interfaces (402), the integrated block (4), the oxygen passage (206), the air cavity (204), the backflow port (205), the inner hole of the backflow ring (203), the inner hole of the transition sleeve, the upper cone port (101) and the core port (804) in sequence before being discharged from the bottom end of the cutting nozzle assembly (8).

3. The thick plate laser flame composite thermal cutting torch according to claim 1, characterized in that: Preheated oxygen and fuel gas are respectively inputted into the top ends of the preheated oxygen copper tube (403) and the fuel gas copper tube (404). The preheated oxygen passes through the preheated oxygen copper tube (403), the copper tube interface (104), the upper notch (102), and the air inlet groove (802) in sequence and is discharged into the mixing chamber (801). The fuel gas passes through the fuel gas copper tube (404), another copper tube interface (104), the lower notch (103), and another circle of the fuel inlet groove (802) in sequence and is discharged into the mixing chamber (801). The preheated oxygen and fuel gas in the mixing chamber (801) are mixed and discharged from the exhaust groove (803).

4. The thick plate laser flame composite thermal cutting torch according to claim 1, characterized in that: Also included is a cooling passage, wherein the cooling passage is composed of a first air port (701), a second air port (105), a third air port (601), a fourth air port (502) and a fifth air port (207); The first air port (701) is arranged in the wall of the ceramic ring (7), and a spacing cavity (702) is formed between the ceramic ring (7) and the cutting nozzle assembly (8), the bottom end of which extends to the bottom surface of the height adjustment ring (9), and a diversion port (703) communicating with the spacing cavity (702) and the first air port (701) is provided on the inner side of the ceramic ring (7); The top surface of the height adjustment ring (9) is provided with an annular groove (901) connected to the first air port (701), and the height adjustment ring (9) is evenly provided with a plurality of micro-ports (902) connected to the annular groove (901); The top of the cutting torch body (1) is provided with a confluence groove (106), and the second gas port (105) is arranged in the wall of the cutting torch body (1) and is in communication with the confluence groove (106) and the first gas port (701); The third gas port (601) and the fourth gas port (502) are respectively arranged in the wall of the lower cylinder (6) and the upper cylinder (5), and both ends of the third gas port (601) are connected to the fourth gas port (502) and the confluence groove (106); The fifth gas port (207) is arranged in the upper transition plate (2); the bottom surface of the upper transition plate (2) is provided with a bottom port (208) communicating with the fifth gas port (207) and the fourth gas port (502); and the integrated block (4) is provided with a cooling gas interface (405) connected to the fifth gas port (207).

5. A thick plate laser flame composite thermal cutting torch according to claim 4, characterized in that: The ceramic ring (7), the cutting torch body (1) and the wall of the upper cylinder (5) are all provided with threading holes (10), the wall of the lower cylinder (6) is provided with a C-type jacket (602), the C-type jacket (602) and the third gas port (601) are not connected to each other, and a wire is connected to the height adjustment ring (9).

6. A thick plate laser flame composite thermal cutting torch according to claim 5, characterized in that: The upper transition plate (2) is provided with a through-area (209), the inner side of the through-area (209) is provided with an inner recess (210) extending to a wire threading opening (10) at the top end of the upper cylinder (5), the integrated block (4) is connected with a TG connector (401), and the wire passes through a plurality of wire threading openings (10), a C-shaped jacket (602), the inner recess (210) and the through-area (209) and is connected to the TG connector (401).

7. The thick plate laser flame composite thermal cutting torch according to claim 1, characterized in that: A pressure seat (407) is fixed on the outside of the integrated block (4); the top ends of the preheating oxygen copper tube (403) and the gas copper tube (404) are fixed between the pressure seat (407) and the integrated block (4); and arc-shaped openings (406) matching the preheating oxygen copper tube (403) and the gas copper tube (404) are provided on opposite sides of the pressure seat (407) and the integrated block (4).

8. The thick plate laser flame composite thermal cutting torch according to claim 1, characterized in that: The top of the backflow ring (203) is provided with an outer flange (211), the bottom surface of the flange (202) is provided with a positioning port matched with the outer flange (211) at the axial center, the backflow port (205) is arranged on the outer flange (211), and the bottom end of the backflow ring (203) is provided with a positioning ring (212), the outer diameter of the positioning ring (212) is consistent with the inner diameter of the upper cylinder (5) and is in contact with the upper surface of the support ring (501).

9. The thick plate laser flame composite thermal cutting torch according to claim 1, characterized in that: The connection between the cutting torch body (1) and the lower barrel (6) is fixed by a connecting nut (11), and the connection between the ceramic ring (7) and the cutting torch body (1) is fixed by a ceramic ring nut (12).

10. The thick plate laser flame composite thermal cutting torch according to claim 1, characterized in that: Sealing grooves and sealing components are provided at the joints between the flange (202), the upper transition plate (2), the lower transition plate (3), the upper cylinder (5), the lower cylinder (6), the cutting torch body (1) and the ceramic ring (7).

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