Gantry type numerical control cutting machine

Abstract

The invention provides a gantry type numerical control cutting machine, and belongs to the technical field of laser cutting equipment, the gantry type numerical control cutting machine comprises a cutting base slidably connected with a cross beam frame, and further comprises a laser cutting assembly used for cutting a workpiece, the laser cutting assembly is connected with a water inlet pipe and a water outlet pipe, and one end of the laser cutting assembly is provided with a shell; the conversion assembly is used for adjusting the laser cutting assembly; the power assembly provides power for the conversion assembly; the laser cutting device has the beneficial effects that through linkage of the conversion assembly and the power assembly, automatic switching and idle cooling of the laser lens are achieved, it is ensured that cutting operation is conducted uninterruptedly, through cooperation of the cooling cavity and the heat conduction ring, heat generated by the laser assembly is efficiently taken away, aging of parts is delayed, and air flow is generated through fan blades; a conical air curtain is formed through cooperation of the inner shell and the outer shell so as to block smoke generated in the cutting process, pollution to the laser lens is reduced, and the cleaning frequency is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting equipment, in particular to a gantry type CNC cutting machine. Background Art

[0002] With the development of modern mechanical processing industry, the requirements for cutting quality and precision are constantly increasing. The requirements for improving production efficiency, reducing production costs, and having highly intelligent automatic cutting functions are also increasing. CNC cutting machines use digital programs to drive machine tool movement. As the machine tool moves, the randomly equipped cutting tools cut the object. This mechatronic cutting machine is called a CNC cutting machine.

[0003] Laser cutting uses a high-power density laser beam to irradiate the material to be cut, so that the material is quickly heated to the vaporization temperature, evaporated to form holes, and the holes continuously form a very narrow slit to complete the cutting of the material. The gantry CNC laser cutting device is easy to move and can meet the multi-point cutting requirements of the cutting material. Most of the existing laser cutting equipment uses a uniform cooling method for the laser focusing mirror to achieve the purpose of protecting the focusing mirror, and the cooling and use of the laser focusing mirror are mostly carried out simultaneously. If cooling is required, the machine must be shut down, which leads to work interruption and reduced efficiency. In addition, the smoke generated during the cutting process will contaminate the laser lens and increase the cleaning frequency. At the same time, the continuous high temperature will accelerate the aging of core components such as the lens, reducing the service life of the equipment. How to invent a gantry CNC cutting machine to solve these problems has become an urgent problem for technicians in this field. Summary of the Invention

[0004] In order to make up for the above shortcomings, the present invention provides a gantry-type CNC cutting machine, which aims to solve the problem that the cooling and use of the laser focusing lens are mostly carried out simultaneously, and if cooling is required, the machine must be shut down, resulting in work interruption and reduced efficiency. In addition, the smoke generated during the cutting process will contaminate the laser lens, increase the cleaning frequency, and reduce the service life of the equipment.

[0005] The present invention is achieved in that: The present invention provides a gantry-type CNC cutting machine, comprising a cutting base, wherein the cutting base is slidably connected to a crossbeam frame, and further comprising: A laser cutting assembly, the laser cutting assembly is fixedly connected to the crossbeam frame, the laser cutting assembly is used to cut the workpiece, the laser cutting assembly is connected to a water inlet pipe and a drain pipe, and one end of the laser cutting assembly is provided with a housing; A conversion assembly, the conversion assembly is located inside the laser cutting assembly and is used to adjust the laser cutting assembly; A power component is located inside the laser cutting component and provides power for the conversion component.

[0006] Preferably, the laser cutting assembly includes a laser cutting head, an installation cavity is provided inside the laser cutting head, a laser emitter and an electromagnet are fixedly connected to the inner walls of the installation cavity, the laser emitter is located above the electromagnet, and a stepped slot is provided on the inner wall of the installation cavity, and the stepped slot is located directly below the laser emitter.

[0007] Preferably, an exhaust chamber and a cooling chamber are provided inside the laser cutting head, the cooling chamber is located between the exhaust chamber and the installation chamber, the cooling chamber is respectively connected to the water inlet pipe and the drain pipe, the inner wall of the cooling chamber is rotatably connected to a rotating seat, the outer wall of the rotating seat is fixedly connected to a plurality of baffles, and the outer wall of the rotating seat is fixedly connected to a plurality of teeth.

[0008] Preferably, an air inlet hole is provided on the inner wall of the exhaust chamber, and the inner wall of the exhaust chamber is rotatably connected to a rotating column, and the outer wall of the rotating column is fixedly connected to fan blades and a gear disk, and the fan blades are located below the gear disk, and the gear disk is meshed with the teeth, and the inner wall of the exhaust chamber is fixedly connected to an inner shell, and the inner shell is located on the inner side of the rotating seat, and one end of the inner shell is connected to the stepped slot hole, and the inner shell is located on the inner side of the outer shell, and the inner wall of the outer shell is provided with a spiral plate, and the outer shell is fixedly connected to the side wall of the laser cutting head.

[0009] Preferably, the power assembly includes a motor, a rotating plate and a rotating shaft, one end of the motor is fixedly connected to the inner wall of the installation cavity, the other end of the motor is fixedly connected to the rotating shaft, the end of the rotating shaft away from the motor is rotatably connected to the inner wall of the installation cavity, the rotating plate is fixedly connected to the outer wall of the rotating shaft, a movable groove is opened inside the rotating plate, and a reset spring is provided inside the movable groove.

[0010] Preferably, the outer wall of the rotating shaft is fixedly connected to a positioning plate, the positioning plate is located below the rotating plate, a positioning groove is opened on the side wall of the positioning plate, a fixing cylinder is provided on one side of the positioning plate, one end of the fixing cylinder is fixedly connected to the inner wall of the mounting cavity, and a positioning rod and a telescopic spring are provided inside the fixing cylinder.

[0011] Preferably, the positioning rod is arranged in a "T" shape, the positioning rod is slidingly connected to the inner wall of the fixed cylinder, the end of the positioning rod located on the outside of the fixed cylinder is slidingly connected to the positioning groove, and the two ends of the telescopic spring are respectively fixedly connected to the side wall of the positioning rod and the inner wall of the fixed cylinder.

[0012] Preferably, the conversion assembly includes a mounting tube, the outer wall of the mounting tube is fixedly connected to a fixing ring, the mounting tube is arranged in a "T" shape, the outer wall of the mounting tube is slidingly connected to the inner wall of the movable groove, the mounting tube is located on the inner side of the reset spring, the two ends of the reset spring are respectively fixedly connected to the side wall of the fixing ring and the inner wall of the movable groove, and one end of the mounting tube is provided with a magnetic ring.

[0013] Preferably, the conversion assembly also includes a thermally conductive ring and a limiting ring, the limiting ring is fixedly connected to the side wall of the thermally conductive ring, the thermally conductive ring is fixedly connected to the end of the mounting tube away from the magnetic ring, the side wall of the limiting ring is fixedly connected with a pressure sensor, the outer diameter of the thermally conductive ring is smaller than the inner diameter of one end of the stepped slot, and the inner wall of the thermally conductive ring is fixedly connected with a laser lens.

[0014] Preferably, the inner wall of the heat-conducting ring is provided with a piston cavity, the inner wall of the piston cavity is slidably connected to the piston ring, the side wall of the piston ring is fixedly connected to a movable rod, the end of the movable rod away from the piston ring passes through the side wall of the heat-conducting ring, the movable rod is located on one side of the pressure sensor, and the outer wall of the movable rod is provided with a telescopic spring 2, and the two ends of the telescopic spring 2 are respectively fixedly connected to the side wall of the piston ring and the inner wall of the piston cavity.

[0015] The beneficial effects of the present invention are: The present invention utilizes the linkage between the conversion assembly and the power assembly to achieve automatic switching and idle cooling of the laser lens, avoiding the problem of shutdown and cooling due to the continuous high temperature of a single lens, ensuring uninterrupted cutting operations and reducing work interruption time. The circulation of coolant in the cooling chamber cooperates with the heat-conducting ring to efficiently remove heat generated by the laser assembly, delaying component aging. The fan blades generate airflow, which cooperates with the inner and outer shells to form a conical air curtain to block the smoke generated during the cutting process, reduce contamination of the laser lens, reduce cleaning frequency, and protect the internal structure of the equipment from smoke erosion. The mutual engagement of the positioning rod and the positioning groove forms a mechanical locking mechanism, ensuring accurate lens position during switching and preventing optical path deviation from affecting cutting quality. A temperature monitoring mechanism is provided to automatically switch the laser lens, prevent lens damage due to overheating, and reduce the potential risk to the operator from high-temperature waste splashing. The overall fully automated lens switching, temperature monitoring, and protection process reduce the need for manual intervention and reduce operational complexity. It can adapt to cutting requirements under different working conditions and improve the adaptability of cutting various materials through structural synergy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the crossbeam structure of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a laser cutting assembly of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 4 This is a schematic diagram of a half-section structure of a laser cutting head of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of a laser cutting head of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 6 This is a schematic structural diagram of a power assembly and a conversion assembly of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 7 This is a partial structural cross-sectional view of a rotating plate and a mounting tube of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 8 This is a gantry CNC cutting machine provided by the embodiment of the present invention. Figure 7 A schematic diagram of the structure at center A; Figure 9 This is a schematic diagram of the internal structure of a fixed cylinder of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 10 This is a schematic diagram of the right half-section structure of a laser cutting head of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 11 This is a gantry CNC cutting machine provided by the embodiment of the present invention. Figure 10 A magnified schematic diagram of the structure at point B in the middle; Figure 12 This is a schematic diagram of the internal structure of a cooling chamber of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 13 This is a schematic diagram of the internal structure of an exhaust chamber of a gantry-type CNC cutting machine provided by an embodiment of the present invention; Figure 14It is a schematic diagram of the shell structure of a gantry-type CNC cutting machine provided in an embodiment of the present invention.

[0018] In the figure: 1. cutting base; 2. laser cutting assembly; 21. laser cutting head; 22. laser transmitter; 23. electromagnet; 24. air inlet; 25. exhaust chamber; 26. inner shell; 27. rotating seat; 271. teeth; 28. baffle; 29. ​​cooling chamber; 210. mounting chamber; 211. stepped slot; 212. rotating column; 213. fan blade; 214. gear disc; 3. crossbeam; 4. drain pipe; 5. water inlet pipe; 6. power assembly; 61. motor; 62. rotating Movable plate; 621, movable groove; 622, return spring; 63, fixed cylinder; 64, positioning plate; 65, positioning groove; 66, rotating shaft; 67, positioning rod; 68, telescopic spring 1; 7, conversion assembly; 71, mounting tube; 72, magnetic ring; 73, heat-conducting ring; 731, piston chamber; 74, laser lens; 75, limit ring; 76, piston ring; 77, fixed ring; 78, telescopic spring 2; 79, movable rod; 710, pressure sensor; 8, housing; 81, spiral plate. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1 Reference Figures 1-14 A gantry CNC cutting machine includes a cutting base 1, the cutting base 1 is slidably connected to a beam frame 3, and further includes: The laser cutting assembly 2 is fixedly connected to the crossbeam frame 3. The laser cutting assembly 2 is used to cut the workpiece. The laser cutting assembly 2 is connected to the water inlet pipe 5 and the drain pipe 4. One end of the laser cutting assembly 2 is provided with a shell 8; The conversion component 7 is located inside the laser cutting component 2 and is used to adjust the laser cutting component 2; The power component 6 is located inside the laser cutting component 2 and provides power for the conversion component 7 .

[0021] Furthermore, the laser cutting assembly 2 includes a laser cutting head 21, and an installation cavity 210 is provided inside the laser cutting head 21. The inner walls of the installation cavity 210 are fixedly connected with a laser emitter 22 and an electromagnet 23, respectively. The laser emitter 22 is located above the electromagnet 23. The inner wall of the installation cavity 210 is provided with a stepped slot 211, and the stepped slot 211 is located directly below the laser emitter 22. The interior of the laser cutting head 21 is provided with an exhaust cavity 25 and a cooling cavity 29, and the cooling cavity 29 is located between the exhaust cavity 25 and the installation cavity 210. The cooling cavity 29 is respectively connected to the water inlet pipe 5 and the drain pipe 4, and the inner wall of the cooling cavity 29 is rotatably connected with a rotating seat 27, and the outer wall of the rotating seat 27 is fixedly connected with a plurality of baffles 28, and the outer wall of the rotating seat 27 is fixedly connected with a plurality of teeth 271.

[0022] Cooling of the laser cutting assembly 2 during the cutting process: The laser cutting head 21 and the crossbeam frame 3 are detachably connected. In the initial state, one of the mounting tubes 71 is located above the stepped slot 211. When in use, the electromagnet 23 is energized to generate magnetic force. After energization, the magnetism of the side of the electromagnet 23 away from the laser emitter 22 has the same polarity as the side of the magnetic ring 72 close to the laser emitter 22. According to the principle of like charges repel, the electromagnet 23 can exert an external force on the corresponding mounting tube 71, thereby driving the mounting tube 71 to move downward, and compressing the return spring 622 through the fixing ring 77, and finally inserting the heat conducting ring 73 into the inside of the stepped slot 211. Subsequently, the laser emitter 22 is started by an external controller, and the laser emitter 22 is fixed in the mounting cavity 210. The emitted laser beam is transmitted vertically downward and guided to the laser lens 74 of the conversion assembly 7 through the stepped slot 211. The laser lens 74 focuses the beam into a high-energy-density light spot, which acts on the surface of the workpiece after passing through the inner shell 26 to achieve cutting. During the cutting process, high-pressure water is transported to the water inlet pipe 5 through an external pipe, and then after the water fills the cooling chamber 29, it is discharged from the drain pipe 4. The cooling chamber 29 is wrapped with a stepped slot 211. The heat generated by the laser emitter 22 during operation can be transferred to the inside of the cooling chamber 29 through the heat-conducting ring 73. The heat is taken away by the flow of the coolant, thereby improving the cooling effect of the laser emitter 22 and extending the service life. The water inlet at the connection between the water inlet pipe 5 and the cooling chamber 29 is inclined, which can change the flow direction of the water after entering the cooling chamber 29, thereby impacting the baffle 28 through rapid flow, and driving the rotating seat 27 to rotate through kinetic energy. This provides power for the rotation of the fan blades 213. Although the electromagnet 23 and the laser emitter 22 are both in the mounting cavity 210, the two are clearly separated in space: the laser emitter 22 is located above the electromagnet 23, and the stepped slot 211 is located directly below the laser emitter 22, forming an independent optical path channel. The magnetic force of the electromagnet 23 is mainly concentrated on the magnetic ring 72 of the conversion component 7 below it, and has no direct overlap with the optical path area of ​​the laser emitter 22, and will not interfere with the emission path of the laser beam. Its magnetic force will not interfere with the core components of the laser emitter 22 (such as laser diodes and optical path lenses) because the working principle of the laser emitter 22 is based on photoelectric conversion and is not affected by the magnetic field.

[0023] Reference Figure 2-Figure 10 , further; the power assembly 6 includes a motor 61, a rotating plate 62 and a rotating shaft 66, one end of the motor 61 is fixedly connected to the inner wall of the installation cavity 210, the other end of the motor 61 is fixedly connected to the rotating shaft 66, the end of the rotating shaft 66 away from the motor 61 is rotatably connected to the inner wall of the installation cavity 210, the rotating plate 62 is fixedly connected to the outer wall of the rotating shaft 66, a movable groove 621 is opened inside the rotating plate 62, and a return spring 622 is provided inside the movable groove 621; the outer wall of the rotating shaft 66 is fixedly connected to the positioning plate 64, and the positioning plate 64 is located on the rotating plate 6 2, a positioning groove 65 is provided on the side wall of the positioning plate 64, and a fixing cylinder 63 is provided on one side of the positioning plate 64. One end of the fixing cylinder 63 is fixedly connected to the inner wall of the installation cavity 210, and a positioning rod 67 and a telescopic spring 68 are provided inside the fixing cylinder 63; the positioning rod 67 is arranged in a "T" shape, and the positioning rod 67 is slidably connected to the inner wall of the fixing cylinder 63. The end of the positioning rod 67 located on the outside of the fixing cylinder 63 is slidably connected to the positioning groove 65, and the two ends of the telescopic spring 68 are respectively fixedly connected to the side wall of the positioning rod 67 and the inner wall of the fixing cylinder 63.

[0024] The power assembly 6 adjusts the conversion assembly 7: the motor 61 is powered by an external power supply, and its operating state is precisely controlled by the equipment control system. When the laser emitter 22 is overheated due to long-term operation, the system will trigger a protection mechanism. First, the electromagnet 23 is powered off to eliminate its magnetic force. At this time, the return spring 622, which was originally compressed by the repulsive force of the electromagnet 23, begins to release its elastic potential energy, and drives the mounting tube 71 to slide upward through the fixing ring 77. The mounting tube 71 rises along the movable groove 621 of the rotating plate 62, and then pulls the heat-conducting ring 73 out of the stepped groove 211, so that the laser lens 74 in the working state is separated from the optical path. The control system then issues a command to the motor 61, driving the rotating shaft 66 to start rotating. The rotating shaft 66 drives the rotating plate 62 to rotate synchronously. The two sets of conversion components 7 mounted on the rotating plate 62 (one set is the high-temperature component that has just completed work, and the other set is the spare component to be activated) move in a circular motion with the rotating plate 62. When the plate 62 rotates to 180 degrees, the mounting tube 71 to be used moves just above the stepped slot 211, and the high-temperature laser lens 74 is rotated to the side away from the optical path and enters an idle cooling state. This window period is used for natural heat dissipation to avoid irreversible damage to the lens performance caused by continuous high temperature. As the shaft 66 rotates, the positioning plate 64 on its outer wall also rotates synchronously. When the side wall of the positioning plate 64 contacts the end of the positioning rod 67, radial pressure is applied to the positioning rod 67, forcing the positioning rod 67 to overcome the elastic force of the telescopic spring 1 68 and gradually shrink to the inside of the fixed cylinder 63. At this time, the positioning rod 67 is completely separated from the positioning groove 65 of the positioning plate 64, releasing the rotation restriction of the shaft 66. When the positioning plate 64 rotates 180 degrees with the shaft 66, the new positioning groove 65 is aligned with the position of the positioning rod 67, and the elastic force of the telescopic spring 1 68 pushes the positioning rod 67 to re-engage It extends out and accurately embeds into the new positioning groove 65 to form a rigid lock. This positioning mechanism can effectively offset the shaking caused by rotational inertia, ensure that the rotating plate 62 is stable in the preset position, and provide a reliable position reference for the subsequent installation tube 71 to be accurately inserted into the stepped groove hole 211, avoiding the laser light path offset or component collision due to positioning deviation. The entire switching process realizes the uninterrupted replacement of the laser lens 74 through the coordinated cooperation of the mechanical structure and the electronic control system, which not only ensures the continuous operation of the equipment, but also provides the necessary cooling time for the high-temperature components, significantly improving the cutting efficiency and lens service life.

[0025] The lock member 71 is fixed with the locking nut 77 and the spring 72 is fixed with the locking nut 76. The locking nut 76 is fixed with the locking nut 76 in a T-shape. The locking nut 76 is secured to the locking nut 76 at the bottom and the locking nut 76 is in a level position. A pressure sensor 710 is fixedly connected to the wall, the outer diameter of the heat-conducting ring 73 is smaller than the inner diameter of one end of the stepped groove 211, and a laser lens 74 is fixedly connected to the inner wall of the heat-conducting ring 73; a piston cavity 731 is provided on the inner wall of the heat-conducting ring 73, and a piston ring 76 is slidably connected to the inner wall of the piston cavity 731, and a movable rod 79 is fixedly connected to the side wall of the piston ring 76, and the end of the movable rod 79 away from the piston ring 76 passes through the side wall of the heat-conducting ring 73, and the movable rod 79 is located on one side of the pressure sensor 710, and the outer wall of the movable rod 79 is provided with a telescopic spring 2 78, and the two ends of the telescopic spring 2 78 are respectively fixedly connected to the side wall of the piston ring 76 and the inner wall of the piston cavity 731.

[0026] The conversion assembly 7 and the power assembly 6 work in coordination: During the operation of the conversion assembly 7, the laser lens 74 in the working state will continuously generate heat due to the absorption of laser energy. This heat is quickly transferred to the peripheral cooling chamber 29 through the heat-conducting ring 73 closely connected thereto. The coolant circulating in the cooling chamber 29 will continuously take away the heat, forming a continuous cooling cycle to ensure that the laser lens 74 operates stably within the normal operating temperature range. The heat-conducting ring 73 can be made of a metal material with high thermal conductivity, such as pure copper, oxygen-free copper or aluminum alloy. Such materials can efficiently conduct the heat generated by the laser lens 74, ensuring that the heat is quickly transferred to the cooling chamber 29 and taken away by the coolant. At the same time, it has good mechanical strength and high temperature resistance, and can maintain structural stability in the temperature change environment of the cutting operation, avoiding the influence of thermal deformation on the matching accuracy with the stepped slot 211. When the cutting operation lasts for a long time or the laser power is high, if the heat accumulated in the heat-conducting ring 73 exceeds the heat dissipation capacity of the coolant, the heat will be transferred to the piston cavity 731 inside the heat-conducting ring 73. The gas sealed in the piston cavity 731 expands rapidly after being heated, generating an outward thrust, pushing the piston ring 76 to slide along the cavity wall and compressing the telescopic spring 2 78. As the piston ring 76 moves, the movable rod 79 connected to its side wall synchronously approaches the limit ring 75, and finally contacts the pressure sensor 710 on the limit ring 75 and applies pressure. Since the pressure sensor 710 forms an electrical connection with the laser emitter 22, the electromagnet 23 and the motor 61, The sensor under pressure will immediately send out an electrical signal to trigger the protection mechanism of the equipment. The laser emitter 22 will first stop emitting laser light to avoid continuous heating. The electromagnet 23 will then be powered off, losing the repulsive constraint on the conversion component 7. At the same time, the motor 61 starts, driving the rotating plate 62 to rotate, and the currently working laser lens 74 together with its mounting structure is turned to the side away from the optical path, while the laser lens 74 on the other side in the standby state is turned to the working position. The replaced laser lens 74 enters the idle state, and the attached heat is naturally dissipated through the heat conducting ring 73. With the help of the air flow inside the equipment and the residual heat diffusion of the cooling system, the temperature is gradually reduced. Prepare for the next switching use. This process does not require manual intervention. Through the coordination of mechanical structure and electronic control system, the automatic replacement and cooling protection of laser lens 74 are realized, which not only avoids the damage to the lens due to high temperature, but also ensures the continuity of cutting operation. The gas can be inert gas, such as nitrogen, which can avoid oxidation or corrosion of gas and metal parts under high temperature, ensuring the long-term stability of the internal structure of piston cavity 731. At the same time, its thermal expansion performance is stable and can accurately feedback temperature changes. The gas needs to be completely sealed in the piston cavity 731. The matching surface of piston cavity 731 and piston ring 76 needs to be precisely processed to ensure that the gap is extremely small to prevent gas Leakage. At the same time, the piston ring 76 can be made of elastic material (such as a metal ring wrapped with heat-resistant rubber) to further enhance the sealing effect and avoid failure of thermal expansion feedback due to gas loss. The gas is filled into the piston chamber 731 with a certain initial pressure. The initial pressure needs to be set according to the normal working temperature range of the laser lens 74. When the lens is at a safe temperature, the gas expansion force will not push the piston ring 76 to trigger the pressure sensor 710. Only when the temperature exceeds the threshold (that is, the heat of the heat-conducting ring 73 cannot be dissipated in time), the thrust generated by the gas expansion is sufficient to overcome the elastic force of the telescopic spring 2 78, and push the movable rod 79 to squeeze the sensor to ensure the accuracy of temperature monitoring.

[0027] Example 2 Reference Figure 10-14, further; an air inlet hole 24 is opened on the inner wall of the exhaust chamber 25, and the inner wall of the exhaust chamber 25 is rotatably connected to a rotating column 212, and the outer wall of the rotating column 212 is fixedly connected to a fan blade 213 and a toothed disc 214, and the fan blade 213 is located below the toothed disc 214, and the toothed disc 214 is meshed with the teeth 271. The inner wall of the exhaust chamber 25 is fixedly connected to an inner shell 26, and the inner shell 26 is located on the inner side of the rotating seat 27, and one end of the inner shell 26 is connected to the stepped slot 211, and the inner shell 26 is located on the inner side of the outer shell 8. The inner wall of the outer shell 8 is provided with a spiral plate 81, and the outer shell 8 is fixedly connected to the side wall of the laser cutting head 21.

[0028] Protection of the laser lens 74 by the laser cutting assembly 2: When the rotating seat 27 rotates with the impact of the water flow in the cooling chamber 29, the teeth 271 fixed to the outer wall of the exhaust chamber 25 will rotate synchronously. Since the teeth 271 are in meshing state with the toothed disc 214 on the outer wall of the rotating column 212, this mechanical linkage will drive the rotating column 212 to rotate rapidly, thereby causing the fan blades 213 fixed under the rotating column 212 to rotate at high speed, generating continuous airflow power. When the fan blades 213 rotate, they will absorb air from the outside through the air inlet holes 24 opened on the inner wall of the exhaust chamber 25. Fresh air is drawn in. After being gathered in the exhaust chamber 25, the air flows downward along the annular gap between the inner shell 26 and the outer shell 8. After being constrained and guided by the gap, the airflow finally forms a downward conical air curtain outside the cutting nozzle. This air curtain is like an invisible barrier, accurately blocking the laser lens 74 and the cutting area. It can not only effectively block the high-temperature smoke generated during the cutting process from diffusing upward, preventing impurities in the smoke from adhering to the lens surface and causing pollution, but also press the smoke to the smoke collection device under the workbench, reducing the spread of smoke inside the equipment. In addition, the spiral plate 81 provided on the inner wall of the outer shell 8 will guide the gas to form a rotating flow when the airflow passes through. This rotating airflow can not only accelerate the discharge speed of the gas and prevent the airflow from stagnation and accumulation in the exhaust chamber 25, but also enhance the uniformity and coverage of the air curtain, further improve the protection effect of the laser lens 74, reduce the frequency of lens cleaning caused by smoke pollution, and ensure the long-term stable operation of the equipment.

[0029] It should be noted that the specific model specifications of electrical components such as motors need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0030] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A gantry-type CNC cutting machine, comprising a cutting base (1), wherein the cutting base (1) is slidably connected to a crossbeam frame (3), characterized in that: Also includes: A laser cutting assembly (2), the laser cutting assembly (2) being fixedly connected to the crossbeam frame (3), the laser cutting assembly (2) being used for cutting a workpiece, the laser cutting assembly (2) being connected to a water inlet pipe (5) and a drain pipe (4), and a housing (8) being provided at one end of the laser cutting assembly (2); A conversion component (7), the conversion component (7) is located inside the laser cutting component (2), and the conversion component (7) is used to adjust the laser cutting component (2); A power assembly (6), the power assembly (6) is located inside the laser cutting assembly (2), and the power assembly (6) provides power for the conversion assembly (7).

2. A gantry type CNC cutting machine according to claim 1, characterized in that: The laser cutting assembly (2) comprises a laser cutting head (21), an installation cavity (210) is provided inside the laser cutting head (21), a laser emitter (22) and an electromagnet (23) are fixedly connected to the inner wall of the installation cavity (210), the laser emitter (22) is located above the electromagnet (23), and a stepped slot (211) is provided on the inner wall of the installation cavity (210), and the stepped slot (211) is located directly below the laser emitter (22).

3. A gantry type CNC cutting machine according to claim 2, characterized in that: An exhaust chamber (25) and a cooling chamber (29) are provided inside the laser cutting head (21), wherein the cooling chamber (29) is located between the exhaust chamber (25) and the installation chamber (210), and the cooling chamber (29) is respectively connected to the water inlet pipe (5) and the drain pipe (4), wherein the inner wall of the cooling chamber (29) is rotatably connected to a rotating seat (27), wherein the outer wall of the rotating seat (27) is fixedly connected to a plurality of baffles (28), and wherein the outer wall of the rotating seat (27) is fixedly connected to a plurality of teeth (271).

4. A gantry type CNC cutting machine according to claim 3, characterized in that: An air inlet hole (24) is provided on the inner wall of the exhaust chamber (25), and a rotating column (212) is rotatably connected to the inner wall of the exhaust chamber (25), and a fan blade (213) and a toothed disc (214) are fixedly connected to the outer wall of the rotating column (212), and the fan blade (213) is located below the toothed disc (214), and the toothed disc (214) is meshed with the teeth (271). The inner wall of the exhaust chamber (25) is fixedly connected to an inner shell (26), and the inner shell (26) is located on the inner side of the rotating seat (27), and one end of the inner shell (26) is connected to the stepped slot (211), and the inner shell (26) is located on the inner side of the outer shell (8), and the inner wall of the outer shell (8) is provided with a spiral plate (81), and the outer shell (8) is fixedly connected to the side wall of the laser cutting head (21).

5. The gantry type CNC cutting machine according to claim 2, characterized in that: The power assembly (6) includes a motor (61), a rotating plate (62) and a rotating shaft (66), one end of the motor (61) is fixedly connected to the inner wall of the installation cavity (210), the other end of the motor (61) is fixedly connected to the rotating shaft (66), the end of the rotating shaft (66) away from the motor (61) is rotatably connected to the inner wall of the installation cavity (210), the rotating plate (62) is fixedly connected to the outer wall of the rotating shaft (66), a movable groove (621) is provided inside the rotating plate (62), and a return spring (622) is provided inside the movable groove (621).

6. A gantry type CNC cutting machine according to claim 5, characterized in that: The outer wall of the rotating shaft (66) is fixedly connected with a positioning plate (64), and the positioning plate (64) is located below the rotating plate (62). A positioning groove (65) is provided on the side wall of the positioning plate (64). A fixing cylinder (63) is provided on one side of the positioning plate (64), and one end of the fixing cylinder (63) is fixedly connected to the inner wall of the mounting cavity (210). A positioning rod (67) and a telescopic spring (68) are provided inside the fixing cylinder (63).

7. A gantry type CNC cutting machine according to claim 6, characterized in that: The positioning rod (67) is arranged in a "T" shape, and the positioning rod (67) is slidably connected to the inner wall of the fixed cylinder (63). One end of the positioning rod (67) located outside the fixed cylinder (63) is slidably connected to the positioning groove (65), and the two ends of the telescopic spring (68) are respectively fixedly connected to the side wall of the positioning rod (67) and the inner wall of the fixed cylinder (63).

8. The gantry type CNC cutting machine according to claim 5, characterized in that: The conversion assembly (7) includes a mounting tube (71), the outer wall of the mounting tube (71) is fixedly connected to a fixing ring (77), the mounting tube (71) is arranged in a "T" shape, the outer wall of the mounting tube (71) is slidably connected to the inner wall of the movable groove (621), the mounting tube (71) is located on the inner side of the return spring (622), the two ends of the return spring (622) are respectively fixedly connected to the side wall of the fixing ring (77) and the inner wall of the movable groove (621), and one end of the mounting tube (71) is provided with a magnetic ring (72).

9. The gantry type CNC cutting machine according to claim 8, characterized in that: The conversion assembly (7) further comprises a heat-conducting ring (73) and a limiting ring (75), wherein the limiting ring (75) is fixedly connected to the side wall of the heat-conducting ring (73), the heat-conducting ring (73) is fixedly connected to one end of the mounting tube (71) away from the magnetic ring (72), the side wall of the limiting ring (75) is fixedly connected to a pressure sensor (710), the outer diameter of the heat-conducting ring (73) is smaller than the inner diameter of one end of the stepped slot (211), and the inner wall of the heat-conducting ring (73) is fixedly connected to a laser lens (74).

10. The gantry type CNC cutting machine according to claim 9, characterized in that: The inner wall of the heat-conducting ring (73) is provided with a piston cavity (731), the inner wall of the piston cavity (731) is slidably connected to the piston ring (76), the side wall of the piston ring (76) is fixedly connected to a movable rod (79), the end of the movable rod (79) away from the piston ring (76) passes through the side wall of the heat-conducting ring (73), the movable rod (79) is located on one side of the pressure sensor (710), and the outer wall of the movable rod (79) is provided with a telescopic spring (78), and the two ends of the telescopic spring (78) are fixedly connected to the side wall of the piston ring (76) and the inner wall of the piston cavity (731) respectively.

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