Laser flame hybrid cutting machine

Abstract

The present application relates to the technical field of cutting equipment, and particularly relates to a laser-flame combined cutting machine. The laser-flame combined cutting machine comprises a cutting mechanism and a cooling mechanism, and the cutting mechanism comprises a laser cutting assembly and an adjusting assembly. The laser cutting assembly comprises a first laser and a second laser. The adjusting assembly is used for adjusting the interval between the first laser beam emitted by the first laser and the second laser beam emitted by the second laser. When initial cutting is performed, the interval between the first laser beam and the second laser beam is reduced, and the laser action area is more concentrated. After the metal plate is penetrated, the interval between the first laser beam and the second laser beam is increased, so that the laser energy absorption is more uniform. The cooling mechanism is used for cooling the upper part of the metal plate, so as to reduce the overburning phenomenon of the cutting surface of the upper part of the metal plate. The present application provides a laser-flame combined cutting machine, so as to solve the problem that the existing cutting machine will cause the overburning of the two side surfaces of the cut metal plate and the reduction of cutting precision when facing thicker plates.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment technology, and specifically to a laser-flame composite cutting machine. Background Technology

[0002] Laser-flame composite cutting machines are composite processing equipment that integrates the advantages of laser cutting and flame cutting. Combining the high precision characteristics of dual-laser cutting technology, they are mainly used for efficient thermal cutting of metal sheets such as carbon steel. The equipment uses dual lasers as high-precision heat sources, combined with oxygen-assisted combustion to create a flame cutting effect. It balances the positioning accuracy and energy controllability of dual lasers with the thick-plate cutting capability of flames, enabling rapid blanking, perforation, and contour processing of metal sheets. This solves the problem that single-cutting methods and single-laser cutting cannot simultaneously achieve efficiency, quality, and meet the requirements of thick-plate processing. In particular, the synergistic effect of dual lasers optimizes the flatness of the cut surface, reducing cutting slope and thermal deformation.

[0003] This equipment is widely used in industries such as steel structure manufacturing, shipbuilding, construction machinery, automobile manufacturing, and building profile processing. It is suitable for batch cutting of medium and heavy plates, cutting of irregular-shaped parts, piercing of thick plates, and high-precision contour processing. With the advantages of dual laser cutting, it can adapt to more complex cutting needs, covering the processing requirements of the full thickness range from thin to thick plates, effectively improving material utilization, cutting accuracy, and production automation level. It is particularly widely used in medium and heavy plate processing scenarios with high requirements for cut surface quality.

[0004] For example, the invention patent CN118513673B discloses a large-format laser-flame composite cutting machine. When cutting thick plates, a mixed gas is ignited at high temperature to form a flame that is sprayed onto the thick plate. This flame, combined with the laser beam, rapidly heats up the thick plate locally, achieving a faster cutting effect. The high-pressure oxygen, coaxial with the laser beam, not only acts as a combustion aid but also blows away molten or vaporized metal. However, when cutting thicker plates, the oxygen concentration is higher in the area near the nozzle, which can cause overheating on both sides of the metal plate being cut, resulting in material waste and reduced cutting precision. Summary of the Invention

[0005] This invention provides a laser-flame composite cutting machine to solve the problem that existing cutting machines cause overheating on both sides of the metal sheet being cut when dealing with thicker sheets, resulting in a decrease in cutting accuracy.

[0006] The present invention discloses a laser-flame composite cutting machine with the following technical solution: A laser-flame composite cutting machine for cutting metal plates includes a platform, a mounting box, a laser nozzle, a cutting mechanism, and a cooling mechanism. The metal plate is disposed on the platform. The mounting box is movably disposed on the platform. The mounting box has a first side and a second side on both sides along a first direction, the first direction being the horizontal movement direction of the mounting box. The first side is positioned in front of the second side relative to the second side of the mounting box's movement direction. The laser nozzle is disposed on the first side of the mounting box, and the two are connected. The laser nozzle is vertically disposed and positioned above the metal plate.

[0007] The cutting mechanism includes a flame cutter, a laser cutting assembly, a gas supply assembly, and an adjustment assembly. The flame cutter is mounted on a mounting box. The laser cutting assembly includes a first reflective unit and a second reflective unit, as well as a first laser and a second laser vertically mounted inside the mounting box.

[0008] The first reflecting unit reflects the first laser beam emitted by the first laser into the laser nozzle, and then propagates vertically downwards. The second reflecting unit reflects the second laser beam emitted by the second laser into the laser nozzle, and then propagates vertically downwards. The first laser beam acts on the upper part of the metal plate, and the second laser beam acts on the lower part of the metal plate. The first and second laser beams acting on the metal plate are distributed along a direction from the first side to the second side of the mounting box.

[0009] The adjustment assembly is used to adjust the horizontal distance between the first and second laser beams within the laser nozzle. The gas supply assembly is used to provide combustion-supporting gas. The cooling mechanism is used to cool the upper part of the metal plate.

[0010] Furthermore, the cooling mechanism includes a cooling plate, which is fixedly mounted on the lower end face of the laser nozzle, and coolant flows through the cooling plate. The cooling plate is in close contact with the upper surface of the metal plate, cooling and dissipating heat from the upper part of the metal plate.

[0011] Furthermore, the cooling plate is connected to an inlet pipe and an outlet pipe. The cooling mechanism also includes a water pump, which is connected to the inlet pipe to pump coolant into the cooling plate and return it through the outlet pipe, forming a closed cooling cycle.

[0012] Furthermore, a cleaning plate is fixedly installed on the side of the cooling plate near the first side of the mounting box. The cleaning plate is in contact with the upper surface of the metal plate and is used to remove impurities from the upper surface of the metal plate.

[0013] Furthermore, the first reflecting unit includes a first lens and a second lens. The first lens is disposed inside the mounting box, and the second lens is disposed inside the laser nozzle. Both the first and second lenses are inclined in the same direction, and the first and second lenses cooperate to achieve two redirections. The first lens redirects the vertical first laser beam emitted by the first laser to propagate along a first direction. The second lens redirects the first laser beam propagating along the first direction back to propagate vertically downwards.

[0014] Furthermore, the second reflecting unit includes a third lens and a movable lens. The third lens is housed within the mounting box, and the movable lens is housed within the laser nozzle. Both the third lens and the movable lens are tilted in the same direction, and they work together to achieve two rotations. The movable lens can slide linearly along a direction perpendicular to its own tilt.

[0015] The third lens converts the vertically oriented second laser beam emitted by the second laser into propagation along the first direction. The movable lens converts the second laser beam propagating along the first direction back into a vertically downward direction. When the movable lens moves away from the metal plate, the horizontal distance between the first and second laser beams decreases. When the movable lens moves closer to the metal plate, the horizontal distance between the first and second laser beams increases.

[0016] Furthermore, the second reflecting unit also includes a drive motor, which is fixedly mounted inside the laser nozzle. The output shaft of the drive motor is arranged along a direction perpendicular to the tilt of the movable lens. A coaxial connecting pipe is fixedly mounted on the output shaft. A threaded rod is fixedly mounted on the movable lens, perpendicular to the tilt direction of the movable lens. The threaded rod is located inside the connecting pipe and engages with the threaded connection of the connecting pipe.

[0017] Furthermore, a limiting plate is fixedly installed inside the laser nozzle. The limiting plate slides with the movable lens and is used to restrict the rotation of the movable lens around the axis of the threaded rod.

[0018] Furthermore, an air inlet pipe is provided on the laser nozzle. The air supply assembly includes an oxygen cylinder, which is connected to the air inlet pipe for introducing oxygen into the air inlet pipe.

[0019] Furthermore, a laser flame composite cutting machine also includes a fixed plate, which is movable and rotatable relative to the platform, and the mounting box is fixedly mounted on the fixed plate.

[0020] The beneficial effects of the present invention are as follows: In the initial cutting stage, due to the low temperature of the metal plate, the horizontal distance between the first laser beam and the second laser beam emitted from the laser nozzle is shortened by adjusting the component, thereby making the laser action area more concentrated and improving the initial penetration efficiency.

[0021] After the first and second laser beams penetrate the metal plate, the horizontal distance between them, emitted from the laser nozzle, is increased by an adjustment component. During the cutting process, the first and second laser beams act sequentially on the same cutting path, creating a layered cutting effect and resulting in a gently sloping cut surface. The greater the horizontal distance between the first and second laser beams, the gentler the cut surface slope, the more uniform the laser energy absorption, and the higher the energy utilization rate, thereby improving cutting efficiency, enhancing surface finish, and reducing thermal deformation.

[0022] During the cutting process, a cooling mechanism is used to cool the upper part of the metal plate, reducing the temperature at the edge of the cutting seam and minimizing overheating of the upper cut surface of the metal plate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a laser-flame composite cutting machine provided in an embodiment of the present invention;

[0025] Figure 2 This is a front view of a laser-flame composite cutting machine provided in an embodiment of the present invention;

[0026] Figure 3 This is a partial front view of a laser-flame composite cutting machine provided in an embodiment of the present invention;

[0027] Figure 4 for Figure 3 Sectional view along the middle AA direction;

[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0029] Figure 6 A top view of a laser-flame composite cutting machine provided in an embodiment of the present invention;

[0030] Figure 7 for Figure 6 A cross-sectional view along the CC direction;

[0031] Figure 8 for Figure 7 Enlarged view of point D in the middle;

[0032] Figure 9 for Figure 7 Enlarged view at point E in the middle;

[0033] Figure 10 A schematic diagram of the paths of the first and second laser beams of a laser-flame composite cutting machine provided for an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the paths of the first and second laser beams after the movable lens of a laser-flame composite cutting machine moves, as provided in an embodiment of the present invention.

[0035] In the diagram: 101, fixing plate; 102, limiting plate; 103, mounting box; 104, laser nozzle; 105, metal plate; 1051, cutting slit; 106, liquid inlet pipe; 1061, liquid outlet pipe; 107, air inlet pipe; 108, drive motor; 109, cooling plate; 1091, cleaning plate; 110, threaded rod; 111, movable lens; 112, first laser; 113, second laser; 120, first lens; 121, second lens; 122, third lens. Detailed Implementation

[0036] 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.

[0037] Reference Figures 1 to 11 As shown in the figure, an embodiment of the present invention provides a laser-flame composite cutting machine for cutting a metal plate 105, including a platform, a mounting box 103, a laser nozzle 104, a cutting mechanism, and a cooling mechanism. The metal plate 105 is disposed on the platform. The mounting box 103 is movably disposed on the platform. The two sides of the mounting box 103 along a first direction are respectively a first side and a second side, the first direction being the horizontal movement direction of the mounting box 103, and the first side being in front of the second side in the movement direction of the mounting box 103. The laser nozzle 104 is disposed on the first side of the mounting box 103 and communicates with the mounting box 103. The laser nozzle 104 is vertically disposed and positioned above the metal plate 105.

[0038] The cutting mechanism includes a flame cutter, a laser cutting assembly, a gas supply assembly, and an adjustment assembly. The flame cutter is mounted on the mounting box 103. The laser cutting assembly includes a first laser 112, a second laser 113, a first reflection unit, and a second reflection unit. The first laser 112 and the second laser 113 are vertically arranged inside the mounting box 103 and distributed along a direction from the first side to the second side of the mounting box 103.

[0039] The first reflecting unit reflects the first laser beam emitted by the first laser 112 into the laser nozzle 104, where it then propagates vertically downwards. The second reflecting unit reflects the second laser beam emitted by the second laser 113 into the laser nozzle 104, where it then propagates vertically downwards. The first laser beam acts on the upper part of the metal plate 105, and the second laser beam acts on the lower part of the metal plate 105. The first and second laser beams acting on the metal plate 105 are distributed sequentially along a direction from the first side to the second side of the mounting box 103.

[0040] An adjustment assembly is used to adjust the horizontal spacing between the first and second laser beams emitted from the laser nozzle 104. A gas supply assembly provides combustion gas to the flame cutter and works in conjunction with the first laser 112 and the second laser 113 to achieve melting and cutting. A cooling mechanism is used to cool the upper part of the metal plate 105.

[0041] In the initial cutting stage, the metal plate 105 is at a low temperature. By adjusting the components, the horizontal distance between the first laser beam and the second laser beam emitted from the laser nozzle 104 is shortened, thereby making the laser action area more concentrated and improving the initial penetration efficiency.

[0042] After the first and second laser beams penetrate the metal plate 105, the horizontal distance between them, emitted from the laser nozzle 104, is increased by an adjustment component. During the cutting process, the first and second laser beams act sequentially on the same cutting path, creating a layered cutting effect and resulting in a gently sloping cut surface. The greater the horizontal distance between the first and second laser beams, the gentler the cut surface slope, the more uniform the laser energy absorption, and the higher the energy utilization rate, thereby improving cutting efficiency, enhancing the surface finish, and reducing thermal deformation.

[0043] During the cutting process, the upper part of the metal plate 105 is cooled by a cooling mechanism to reduce the edge temperature of the cutting seam 1051 and reduce the overheating of the upper cutting surface of the metal plate 105.

[0044] In this embodiment, a laser flame composite cutting machine further includes a cooling mechanism, which includes a cooling plate 109 fixedly disposed on the lower end face of a laser nozzle 104. An inlet pipe 106 and an outlet pipe 1061 are provided on the laser nozzle 104, respectively communicating with the cooling plate 109. Coolant enters the cooling plate 109 through the inlet pipe 106 and flows out through the outlet pipe 1061. The cooling plate 109 is in close contact with the upper surface of a metal plate 105, cooling and dissipating heat from the upper part of the metal plate 105.

[0045] In this embodiment, the cooling mechanism also includes a water pump, which is connected to the inlet pipe 106 to pump coolant into the cooling plate 109 and return it through the outlet pipe 1061 to form a closed cooling cycle.

[0046] In this embodiment, a cleaning plate 1091 is fixedly provided on the side of the cooling plate 109 near the first side of the mounting box 103. The cleaning plate 1091 is in contact with the upper surface of the metal plate 105 and is used to remove impurities from the upper surface of the metal plate 105 so that no burrs appear on the upper part of the metal plate 105.

[0047] In this embodiment, the first reflecting unit includes a first lens 120 and a second lens 121. The first lens 120 is disposed within the mounting housing 103, and the second lens 121 is disposed within the laser nozzle 104. Both the first lens 120 and the second lens 121 are inclined in the same direction, and cooperate to achieve two redirections. The first lens 120 redirects the vertical first laser beam emitted by the first laser 112 to propagate along a first direction. The second lens 121 redirects the first laser beam propagating along the first direction back to propagate vertically downwards.

[0048] In this embodiment, the second reflecting unit includes a third lens 122 and a movable lens 111. The third lens 122 is disposed within the mounting housing 103, and the movable lens 111 is disposed within the laser nozzle 104. Both the third lens 122 and the movable lens 111 are inclined in the same direction, and cooperate to achieve two rotations. The inclination angles of the third lens 122 and the second lens 121 are the same. The movable lens 111 can slide linearly along a direction perpendicular to its own inclination.

[0049] The third lens 122 converts the vertical second laser beam emitted by the second laser 113 into a beam propagating in the first direction. The movable lens 111 is used to convert the second laser beam propagating in the first direction back into a beam propagating downwards in the vertical direction.

[0050] When the movable lens 111 moves away from the metal plate 105, the horizontal distance between the first laser beam and the second laser beam decreases. When the movable lens 111 moves closer to the metal plate 105, the horizontal distance between the first laser beam and the second laser beam increases.

[0051] The first lens 120 and the third lens 122 are distributed sequentially along the direction from the first side to the second side of the mounting box 103, with the third lens 122 positioned above the first lens 120. The movable lens 111 is positioned above the second lens 121, such that the first laser beam and the second laser beam emitted from the laser nozzle 104 are distributed sequentially along the direction from the first side to the second side of the mounting box 103.

[0052] In this embodiment, the second reflecting unit further includes a drive motor 108, which is fixedly disposed within the laser nozzle 104. The output shaft of the drive motor 108 is arranged along a direction perpendicular to the tilt of the movable lens 111. A coaxial connecting pipe is fixedly disposed on the output shaft. A threaded rod 110 is fixedly disposed on the movable lens 111, and the threaded rod 110 is perpendicular to the tilt direction of the movable lens 111. The threaded rod 110 is disposed within the connecting pipe and engages with the threaded connection of the connecting pipe.

[0053] The drive motor 108 rotates in the forward direction, driving the movable lens 111 to move away from the metal plate 105 via the threaded rod 110. The motor rotates in the reverse direction, driving the movable lens 111 to move closer to the metal plate 105 via the threaded rod 110.

[0054] In this embodiment, a limiting plate 102 is fixedly installed inside the laser nozzle 104. The limiting plate 102 is slidably engaged with the movable lens 111. The limiting plate 102 is used to restrict the movable lens 111 from rotating around the axis of the threaded rod 110.

[0055] In this embodiment, an air inlet pipe 107 is provided on the laser nozzle 104. The air supply assembly includes an oxygen tank, which is connected to the air inlet pipe 107 for introducing oxygen into the air inlet pipe 107.

[0056] In this embodiment, a laser flame composite cutting machine further includes a fixing plate 101, which is movable and rotatable relative to the platform, and a mounting box 103 is fixedly mounted on the fixing plate 101.

[0057] Working Process: At the start of operation, the oxygen tank is activated, supplying pure oxygen into the inlet pipe 107. Then, the flame cutter is activated to preheat the metal plate 105. Simultaneously, the first laser 112 and the second laser 113 are activated. The vertical first laser beam emitted by the first laser 112 is reflected by the first lens 120 and then propagates in the first direction. After being reflected by the second lens 121, it propagates vertically downwards within the laser nozzle 104. The vertical second laser beam emitted by the second laser 113 is reflected by the third lens 122 and then propagates in the first direction. After being reflected by the movable lens 111, it propagates vertically downwards within the laser nozzle 104. The moving fixed plate 101 moves the mounting box 103 and the laser nozzle 104 synchronously. The flame cutter, in coordination with the first laser 112 and the second laser 113, cuts the metal plate 105.

[0058] In the initial cutting stage, the metal plate 105 is at a low temperature. The drive motor 108 is started and rotates in the forward direction, driving the connecting pipe to rotate. This, in turn, drives the movable lens 111 to move away from the metal plate 105 via the threaded rod 110. At this time, the horizontal distance between the second laser beam guided by the movable lens 111 and the first laser beam is shortened, the laser action area is more concentrated, and the initial penetration efficiency is improved.

[0059] After the first and second laser beams penetrate the metal plate 105, the drive motor 108 rotates in opposite directions, causing the movable lens 111 to move closer to the metal plate 105, thus increasing the horizontal distance between the first and second laser beams. Since the first laser beam acts on the upper part of the metal plate 105 and the second laser beam acts on the lower part, and the first and second laser beams are distributed sequentially along the direction from the first side to the second side of the mounting box 103, they act sequentially on the same cutting path during the cutting process, creating a layered cutting effect and forming a gently sloping cut surface. The greater the horizontal distance between the first and second laser beams, the gentler the cut surface slope, the more uniform the laser energy absorption, and the higher the energy utilization rate, which is beneficial for improving cutting efficiency, enhancing the surface finish, and reducing thermal deformation.

[0060] During the cutting process, a water pump is simultaneously activated, supplying coolant to the cooling plate 109 through the inlet pipe 106. The coolant then flows back through the outlet pipe 1061, forming a circulating cooling system. The cooling plate 109 cools the upper part of the metal plate 105, reducing the edge temperature of the cutting kerf 1051 and minimizing overheating of the upper cutting surface of the metal plate 105. Because the oxygen concentration in the upper part of the metal plate 105 is higher than that in the lower part, the oxidation reaction in the upper part of the metal plate 105 is more intense, making overheating more likely. Due to cooling distance limitations, the cooling plate 109 is located close to the upper part of the cutting kerf 1051, primarily cooling the upper part of the metal plate 105 without affecting the temperature of the lower laser cutting area, thus ensuring stable cutting in the lower part.

[0061] When laser cutting is at a turning point, the heat dissipation area is small and the heat is concentrated in the cutting angle region of less than 180°, resulting in a higher risk of overheating. When the mounting box 103 rotates, the rotational angular velocity of the cooling plate 109 varies at different turning points. Specifically, at angles less than 180°, the rotational angular velocity of the cooling plate 109 is lower than that at angles greater than 180°. Therefore, the cooling plate 109 can remain at angles less than 180° for a longer period, effectively mitigating the overheating problem in this area. Furthermore, during the turning process, adjusting the first and second laser beams to be closer together reduces the radius of the arc during the turn, improving cutting accuracy. Simultaneously, increasing the coolant flow rate enhances cooling efficiency at the turning point, further reducing the risk of overheating at the turning point.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser-flame composite cutting machine for cutting metal plates, characterized in that: The device includes a platform, a mounting box, a laser nozzle, a cutting mechanism, and a cooling mechanism. A metal plate is mounted on the platform. The mounting box is movably mounted on the platform. The two sides of the mounting box along a first direction are a first side and a second side, respectively. The first direction is the horizontal movement direction of the mounting box, and the first side is in front of the second side in the movement direction of the mounting box. The laser nozzle is mounted on the first side of the mounting box, and the two are connected. The laser nozzle is vertically mounted and located above the metal plate. The cutting mechanism includes a flame cutter, a laser cutting assembly, a gas supply assembly, and an adjustment assembly. The flame cutter is mounted on a mounting box. The laser cutting assembly includes a first reflective unit and a second reflective unit, as well as a first laser and a second laser vertically mounted inside the mounting box. The first reflecting unit is used to reflect the first laser beam emitted by the first laser into the laser nozzle, and then propagate vertically downward; the second reflecting unit is used to reflect the second laser beam emitted by the second laser into the laser nozzle, and then propagate vertically downward; the first laser beam acts on the upper part of the metal plate, the second laser beam acts on the lower part of the metal plate, and the first laser beam and the second laser beam acting on the metal plate are distributed along the direction from the first side to the second side of the mounting box. The adjustment assembly is used to adjust the horizontal distance between the first and second laser beams within the laser nozzle; the gas supply assembly is used to provide combustion-supporting gas; and the cooling mechanism is used to cool the upper part of the metal plate. The first reflecting unit includes a first lens and a second lens. The first lens is disposed inside the mounting box, and the second lens is disposed inside the laser nozzle. Both the first lens and the second lens are tilted in the same direction. The first lens and the second lens work together to achieve two rotations. The first lens converts the vertical first laser beam emitted by the first laser into a beam that propagates in the first direction. The second lens converts the first laser beam that propagates in the first direction back into a beam that propagates downward in the vertical direction. The second reflective unit includes a third lens and a movable lens; the third lens is installed inside the mounting box, and the movable lens is installed inside the laser nozzle; both the third lens and the movable lens are tilted in the same direction, and the third lens and the movable lens work together to achieve two rotations; the movable lens can slide linearly along a direction perpendicular to its own tilt. The third lens converts the vertical second laser beam emitted by the second laser into propagation along the first direction; the movable lens converts the second laser beam propagating along the first direction back into propagation downwards in the vertical direction; when the movable lens moves away from the metal plate, the horizontal distance between the first laser beam and the second laser beam decreases; when the movable lens moves closer to the metal plate, the horizontal distance between the first laser beam and the second laser beam increases. The first and third lenses are distributed sequentially from the first side to the second side of the mounting box, with the third lens positioned above the first lens; the movable lens is positioned above the second lens, such that the first and second laser beams emitted from the laser nozzle are distributed sequentially from the first side to the second side of the mounting box. The cooling mechanism includes a cooling plate, which is fixedly mounted on the lower end face of the laser nozzle. Coolant flows through the cooling plate. The cooling plate is attached to the upper surface of the metal plate to cool and dissipate heat from the upper part of the metal plate. It also includes a fixing plate, which can move and rotate relative to the platform, and the mounting box is fixedly mounted on the fixing plate.

2. The laser-flame composite cutting machine according to claim 1, characterized in that: The cooling plate is connected to an inlet pipe and an outlet pipe; the cooling mechanism also includes a water pump, which is connected to the inlet pipe to pump the coolant into the cooling plate and return it through the outlet pipe, forming a closed cooling cycle.

3. The laser-flame composite cutting machine according to claim 1, characterized in that: A cleaning plate is fixedly installed on the side of the cooling plate near the first side of the mounting box. The cleaning plate is in contact with the upper surface of the metal plate and is used to remove impurities from the upper surface of the metal plate.

4. A laser-flame composite cutting machine according to claim 1, characterized in that: The second reflection unit also includes a drive motor, which is fixedly installed inside the laser nozzle; the output shaft of the drive motor is arranged along a direction perpendicular to the tilt of the movable lens; a coaxial connecting pipe is fixedly installed on the output shaft; a threaded rod is fixedly installed on the movable lens, the threaded rod being perpendicular to the tilt direction of the movable lens; the threaded rod is installed inside the connecting pipe and engages with the threaded drive of the connecting pipe.

5. A laser-flame composite cutting machine according to claim 4, characterized in that: A limiting plate is fixedly installed inside the laser nozzle. The limiting plate slides with the movable lens and is used to restrict the rotation of the movable lens around the axis of the threaded rod.

6. A laser-flame composite cutting machine according to claim 1, characterized in that: The laser nozzle is equipped with an air inlet pipe; the air supply assembly includes an oxygen tank, which is connected to the air inlet pipe for introducing oxygen into the air inlet pipe.

Images