An eddy current cooling method for a laser cutting machine

Abstract

The application discloses a kind of eddy cooling methods of laser cutting machine, comprising the following steps: S1.Module is set temperature and air input quantity;S2.Integrated control module controls compressed air input module to the input compressed air of eddy cooling module;S3.Eddy cooling module is cooled to laser cutting head nozzle end, while temperature detection module real-time monitoring the temperature of eddy cooling device;S4.Integrated control module controls the opening degree of micro electromagnetic valve according to real-time temperature and set temperature.This patent's eddy cooling method of laser cutting machine, through the closed-loop control between each module, make the eddy vortex of helical rising in eddy cooling device, separate out cold airflow to laser cutting head nozzle end cooling, while through integrated control module controls the opening degree of micro electromagnetic valve, control the cooling rate of eddy cooling device, further make the temperature of laser cutting head nozzle end keep in certain range and reach dynamic stability.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of laser cutting machines, and particularly relates to a vortex cooling method for a laser cutting machine. BACKGROUND

[0002] In the field of laser cutting, a capacitive height adjustment servo sensor is very prone to signal transmission deviation due to the temperature rise of the sensor during laser cutting. The transmission data deviation of the sensor will lead to inaccurate height adjustment of the laser head during cutting, poor cutting effect, and even problems such as capacitive height adjustment failure. The traditional solution is to use a water cooling structure combined with a water chiller for cooling, but the water cooling has high energy consumption, high production and maintenance cost, low efficiency, high sealing requirement, water leakage risk, and cannot accurately control the temperature.

[0003] Patent No. CN201721346474.7 discloses a laser cutting machine circulating cooling system, which can cool the laser and the laser head through one water chiller. Part of the cooling water flows to the laser water cooling plate to cool and lower the temperature of the laser, and the air cooling system lowers the temperature around the laser head and the laser through heat exchange of the cooling water. However, the cooling method of the cooling water has low efficiency, has water leakage risk, and cannot control the temperature within the required range. SUMMARY

[0004] The purpose of the present application is to provide a vortex cooling method for a laser cutting machine, which uses vortex separated cold air to cool the nozzle end of the laser cutting head of the laser cutting machine. The vortex cooling method has high cooling efficiency and can control the required cooling temperature.

[0005] To achieve the above-mentioned purposes, the technical solutions adopted by the present application are as follows:

[0006] A vortex cooling method for a laser cutting machine, the laser cutting machine applied by the vortex cooling method comprises a vortex cooling device, a touch display screen, a laser cutting head nozzle end, and an integrated intelligent control board. The vortex cooling device comprises a compressed air input module, a vortex cooling module, a temperature detection module, and a micro electromagnetic valve. The touch display screen comprises a setting module. The integrated intelligent control board comprises an integrated control module.

[0007] The setting module is used to pre-set the target temperature and air input required by the vortex cooling device, and generate corresponding data transmission to the integrated control module.

[0008] The temperature detection module is used to monitor the temperature of the vortex cooling device in real time, generate real-time temperature data, and transmit the real-time temperature data to the integrated control module.

[0009] The integrated control module is configured to acquire data of the setting module and the temperature detection module, and control the compressed air input amount of the compressed air input module and the opening degree of the micro electromagnetic valve according to the data.

[0010] The compressed air input module is configured to input a corresponding amount of compressed air into the vortex cooling module according to the control of the integrated control module.

[0011] The vortex cooling module is configured to first change the compressed air input by the compressed air input module into a vortex cyclone, and then divide the vortex cyclone into a hot gas flow and a cold gas flow, and the cold gas flow is used to reduce the temperature of the nozzle end of the laser cutting head.

[0012] The micro electromagnetic valve is configured to control the opening degree according to the control of the integrated control module, so as to control the outflow rate of the hot gas flow in the vortex cooling module.

[0013] The vortex cooling method comprises the following steps:

[0014] S1. The setting module sets a target temperature range and an air input amount, and generates target temperature range data and air input data and transmits them to the integrated control module.

[0015] S2. The integrated control module controls the compressed air input module to input a corresponding amount of compressed air into the vortex cooling module according to the air input data.

[0016] S3. The vortex cooling module cools the nozzle end of the laser cutting head, and the temperature detection module monitors the temperature of the vortex cooling device in real time, generates real-time temperature data and transmits them to the integrated control module.

[0017] S4. The integrated control module compares the real-time temperature data and the target temperature range data, controls the opening degree of the micro electromagnetic valve according to the comparison result, and then returns to step S3, so that the real-time temperature data is always within the target temperature range.

[0018] The vortex cooling method of the laser cutting machine of the patent forms a spiral rising vortex cyclone in the vortex cooling device through closed-loop control between the modules, separates a cold gas flow to cool the nozzle end of the laser cutting head, controls the opening degree of the micro electromagnetic valve through the integrated control module, controls the cooling rate of the vortex cooling device, and further keeps the temperature of the nozzle end of the laser cutting head within a certain range to achieve dynamic stability.

[0019] Preferably, the target temperature range in step S1 is 5-30 degrees Celsius.

[0020] Preferably, step S4 further comprises:

[0021] S4.1. The integrated control module compares the real-time temperature data with the maximum value of the target temperature interval data, if the real-time temperature data is less than the maximum value of the target temperature interval data, then turn to S4.2; otherwise, turn to S3;

[0022] S4.2. The integrated control module controls the opening and closing degree of the micro electromagnetic valve, so that the real-time temperature data is always within the target temperature interval.

[0023] Preferably, the vortex cooling device further comprises an outer cover, a top cover sealing plate, an optical path inner core, a first straight air pipe and a second straight air pipe; the top cover sealing plate is installed on the top wall of the outer cover; the inside of the outer cover is a cavity; the optical path inner core is arranged at the center of the inside of the outer cover, and separates the inside of the outer cover into an annular containing space; the first straight air pipe is arranged on one side wall of the outer cover; the second straight air pipe is arranged on the other side wall of the outer cover away from the first straight air pipe.

[0024] Preferably, the first straight air pipe comprises a first input pipe and a first output pipe; the first input pipe faces the outside of the outer cover; the first output pipe faces the inside of the outer cover, and the included angle between the direction thereof and the corresponding side wall of the outer cover is 30-80 degrees; the second straight air pipe comprises a second input pipe and a second output pipe; the second input pipe faces the outside of the outer cover; the second output pipe faces the inside of the outer cover, and the included angle between the direction thereof and the corresponding side wall of the outer cover is 30-80 degrees.

[0025] Preferably, the vortex cooling module comprises an input air path, a first air path and a second air path; the compressed air input module inputs compressed air to the first straight air pipe and the second straight air pipe; when the compressed air enters the annular containing space inside the outer cover from the first output pipe and the second output pipe, it will first pass through the input air path, and become a vortex spiral spirally rising around the optical path inner core in the input air path; when the compressed air rises to touch the top cover sealing plate on the top wall of the outer cover, the input air path divides the compressed air into hot air flow and cold air flow; the hot air flow enters the first air path; the cold air flow enters the second air path.

[0026] Preferably, the vortex cooling module is further provided with a first air outlet hole corresponding to the first air path and a second air outlet hole corresponding to the second air path; the hot air flow flows out from the first air outlet hole after flowing through the first air path; the cold air flow flows out from the second air outlet hole after flowing through the second air path.

[0027] Preferably, one end of the first air outlet hole is connected with the first air path, serving as the flow outlet of the hot gas flow; the micro electromagnetic valve is located at the other end of the first air outlet hole; one end of the second air outlet hole is connected with the second air path, serving as the flow outlet of the cold gas flow; and the laser cutting head nozzle end is located at the other end of the second air outlet hole.

[0028] Preferably, the first air outlet hole is arranged on the outer side wall of the outer cover; the micro electromagnetic valve is arranged outside the outer cover and corresponds to the position of the first air outlet hole; and a support and a pressing plate are arranged between the micro electromagnetic valve and the outer cover, and the micro electromagnetic valve is fixedly installed on the outer side wall of the outer cover through the support and the pressing plate.

[0029] Preferably, the temperature detection module comprises a temperature detection sensor; and the temperature detection sensor is arranged inside the micro electromagnetic valve.

[0030] The temperature detection sensor is used for monitoring the temperature of the vortex cooling device in real time.

[0031] Beneficial effects:

[0032] 1. The vortex cooling method of the laser cutting machine of the present application, after compressed air is input into the vortex cooling device, the closed-loop control among the modules is used to form a spiral ascending vortex air current inside the vortex cooling device, the temperature detection module is used to monitor the temperature of the vortex cooling device in real time, the integrated control module is used to control the opening and closing degree of the micro electromagnetic valve, the cooling rate of the vortex cooling device is controlled, and the temperature of the laser cutting head nozzle end is further kept in the target temperature interval to achieve dynamic stability.

[0033] 2. The air passage of the present application is designed differently from the traditional structure. Higher heat exchange efficiency is brought by the vortex, and compared with the ordinary gas cooling structure, the same gas pressure gas can achieve better cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The flow chart of the vortex cooling method of the laser cutting machine of the present application is shown;

[0035] Figure 2 The subflow chart of Figure 1 is shown;

[0036] Figure 3 The structure block diagram of each module of the present application is shown;

[0037] Figure 4 The air path schematic diagram of the vortex cooling device of the present application is shown;

[0038] Figure 5 The perspective view of Figure 4 is shown;

[0039] Figure 6 An external structure diagram of the vortex cooling device of the embodiment is shown;

[0040] Figure 7 An exploded view of Figure 6 is shown;

[0041] Figure 8 A top view of Figure 6 is shown;

[0042] Figure 9 A bottom view of Figure 6 is shown.

[0043] Reference signs

[0044] 10, light path inner core; 20, outer cover; 21, first air outlet; 22, second air outlet; 30, first right-angle air pipe; 31, first input port; 32, first output port; 40, top cover sealing plate; 41, weight-reducing design; 42, connecting hole; 43, light transmission hole; 44, cutting air path hole; 45, signal line hole; 46, fixing hole; 47, pin hole; 50, second right-angle air pipe; 60, first micro electromagnetic valve; 61, first support; 62, first pressing plate; 70, second micro electromagnetic valve; 71, second support; 72, second pressing plate; 211, input air path; 212, first air path; 221, second air path; 222, cold air outlet; a, included angle of side wall of corresponding position of first output port and outer cover. DETAILED DESCRIPTION

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0046] The technical solutions of the present application will be described in detail below with specific embodiments.

[0047] Embodiment

[0048] As Figures 1-2 shown, the vortex cooling method of the laser cutting machine of the embodiment includes the following steps:

[0049] S1. Setting module sets target temperature interval and air input, and generates target temperature interval data and air input data transmission to integrated control module;

[0050] S2. The integrated control module controls the compressed air input module to input a corresponding amount of compressed air to the vortex cooling module based on the air input data;

[0051] Specifically, the integrated control module controls the compressed air input to the compressed air input module to be a fixed amount preset in S1.

[0052] S3. The eddy current cooling module cools the nozzle end of the laser cutting head, while the temperature detection module monitors the temperature of the eddy current cooling device in real time, generates real-time temperature data and transmits it to the integrated control module.

[0053] S4. The integrated control module compares the real-time temperature data with the target temperature range data, controls the opening and closing degree of the micro solenoid valve according to the comparison result, and then returns to step S3 to keep the real-time temperature data within the target temperature range.

[0054] Preferably, the target temperature range in step S1 is 5 to 30 degrees Celsius;

[0055] Preferably, step S4 further includes:

[0056] S4.1. The integrated control module compares the real-time temperature data with the maximum value of the target temperature range data. If the real-time temperature data is less than the maximum value of the target temperature range data, proceed to S4.2; otherwise, proceed to S3.

[0057] S4.2. The integrated control module controls the opening and closing degree of the micro solenoid valve, so that the real-time temperature data is always within the target temperature range.

[0058] Specifically, when the temperature detection module detects that the temperature of the eddy current cooling device has dropped below the maximum value of the target temperature range, the integrated control module will use a PID control algorithm to control the opening and closing of the micro solenoid valve, thereby maintaining the continuous and stable decrease of the temperature of the eddy current cooling device.

[0059] like Figures 3-8 As shown, the laser cutting machine using the eddy current cooling method in this embodiment includes an eddy current cooling device, a touch screen display, a laser cutting head nozzle end, and an integrated intelligent control board. The eddy current cooling device includes a compressed air input module 3, an eddy current cooling module 4, a temperature detection module 5, and a miniature solenoid valve 6; the touch screen display includes a setting module 1; and the integrated intelligent control board includes an integrated control module 2.

[0060] Setting module 1 is used to pre-set the target temperature and air input required by the vortex cooling device, and generate corresponding data to the integrated control module 2;

[0061] Temperature detection module 5 is used to monitor the temperature of the vortex cooling device in real time, generate real-time temperature data and transmit it to integrated control module 2;

[0062] an integrated control module 2 for acquiring data of the setting module 1 and the temperature detection module 5 and controlling the compressed air input module 3 and the opening and closing degree of the micro electromagnetic valve 6 according to the data;

[0063] a compressed air input module 3 for inputting a corresponding amount of compressed air to the vortex cooling module 4 according to the control of the integrated control module 2;

[0064] a vortex cooling module 4 for changing the compressed air input by the compressed air input module 3 into a vortex and then dividing the vortex into a hot gas flow and a cold gas flow, wherein the cold gas flow is used to reduce the temperature of the nozzle end of the laser cutting head;

[0065] a micro electromagnetic valve 6 for controlling the opening and closing degree according to the control of the integrated control module 2 to control the outflow rate of the hot gas flow in the vortex cooling module 4.

[0066] The vortex cooling method of the laser cutting machine of the embodiment can make the vortex cooling module 4 reduce the temperature of the nozzle end of the laser cutting head through the closed-loop control between the modules, and further control the temperature of the nozzle end of the laser cutting head to be dynamically stable within a certain range by controlling the opening and closing degree of the micro electromagnetic valve through the integrated control module 2 and controlling the cooling rate of the vortex cooling device.

[0067] The vortex cooling device of the embodiment further comprises a right-angle air pipe; the vortex cooling module 4 comprises an input air path 211, a first air path 212 and a second air path 221; one end of the right-angle air pipe is connected with the compressed air input module 3; the other end of the right-angle air pipe is connected with the input air path 211; the vortex cooling module 4 further comprises a first air outlet hole 21 corresponding to the first air path 212 and a second air outlet hole 22 corresponding to the second air path 221. The first air outlet hole 21 and the second air outlet hole 22 serve as the output ends of the vortex cooling module.

[0068] Preferably, after the compressed air input module 3 inputs the compressed air to the vortex cooling module 4, the input air path 211 first changes the compressed air into a vortex and then divides the vortex into a hot gas flow and a cold gas flow, the hot gas flow flows through the first air path 212 and then flows out from the first air outlet hole 21; the cold gas flow flows through the second air path 221 and then flows out from the second air outlet hole 22.

[0069] Preferably, one end of the first air outlet hole 21 is connected with the first air path 212 and serves as the outflow port of the hot gas flow; the micro electromagnetic valve is located at the other end of the first air outlet hole 21; one end of the second air outlet hole 22 is connected with the second air path 221 and serves as the outflow port of the cold gas flow; the nozzle end of the laser cutting head is located at the other end of the second air outlet hole 22.

[0070] Preferably, the vortex cooling device further comprises an outer cover 20, a top cover sealing plate 40, and a light path inner core 10; a right-angle air pipe is arranged on the outer side wall of the outer cover 20; the top cover sealing plate 40 is arranged on the top wall of the outer cover 20; the light path inner core 10 is arranged in the inner part of the outer cover 20; the top cover sealing plate 40 is provided with a light passing hole 43; the light passing hole 43 is in communication with the light path inner core 10; and the first air path 212 and the second air path 221 are also arranged in the inner part of the outer cover 20.

[0071] Preferably, the first air outlet hole 21 is arranged on the outer side wall of the outer cover 20; a micro electromagnetic valve is arranged outside the outer cover 20 and corresponds to the position of the first air outlet hole 21; a bracket and a pressing plate are arranged between the micro electromagnetic valve and the outer cover 20, and the bracket and the pressing plate are fixedly arranged on the outer side wall of the outer cover 20.

[0072] Preferably, the temperature detection module comprises a temperature detection sensor; the temperature detection sensor is arranged in the inner part of the micro electromagnetic valve.

[0073] The temperature detection sensor is used for real-time monitoring of the temperature of the vortex cooling device.

[0074] Preferably, the laser cutter to which the vortex cooling method of the embodiment is applied further comprises a laser end; the top cover sealing plate 40 is further provided with a connecting hole 42, a cutting air path hole 44, a fixing hole 46, and a pin hole 47.

[0075] The connecting hole 42 is used for connecting the vortex cooling device to the laser end.

[0076] The cutting air path hole 44 is used for passing nitrogen or oxygen.

[0077] The fixing hole 46 is used for fixing the connection between the top cover sealing plate 40 and the outer cover 20.

[0078] The pin hole 47 is used for the installation and positioning of the top cover sealing plate 40 and the outer cover 20.

[0079] Specifically, the top cover sealing plate 40 is further provided with a weight reduction design 41 and a signal line hole 45; the weight reduction design 41 is used for reducing the weight of the top cover sealing plate 40; and the signal line hole 45 is a reserved signal hole position.

[0080] Specifically, the right-angle air pipe of the embodiment is arranged as two pipes, i.e., a first right-angle air pipe 30 and a second right-angle air pipe 50; the inner part of the outer cover 20 is a cavity; the light path inner core 10 is arranged in the center of the inner part of the outer cover 20 and separates the inner part of the outer cover 20 into an annular accommodating space; the first right-angle air pipe 30 is arranged on one side wall of the outer cover 20; and the second right-angle air pipe 50 is arranged on the other side wall of the outer cover 20 away from the first right-angle air pipe 30.

[0081] Specifically, the first air outlet hole 21 of the embodiment is divided into a left hot air outlet hole and a right hot air outlet hole.

[0082] Specifically, the micro electromagnetic valves of the embodiment are also correspondingly provided as two, namely a first micro electromagnetic valve 60 and a second micro electromagnetic valve 70; the first micro electromagnetic valve 60 is arranged outside the left hot gas outlet hole and is installed on the corresponding position of the outer side wall of the outer cover 20 through a first support 61 and a first pressing plate 62; the second micro electromagnetic valve 70 is arranged outside the right hot gas outlet hole and is installed on the corresponding position of the outer side wall of the outer cover through a second support 71 and a second pressing plate 72.

[0083] Specifically, the first right-angle air pipe 30 includes a first input port 31 and a first output port 32; the first input port 31 is directed towards the outside of the outer cover 20; the first output port 32 is directed towards the inside of the outer cover 20, and the included angle between the direction and the corresponding position of the side wall of the outer cover 20 is 45 degrees, denoted as an angle a as shown in the figure. Figure 5 The second right-angle air pipe 50 includes a second input port and a second output port; the second input port is directed towards the outside of the outer cover 20; the second output port is directed towards the inside of the outer cover 20, and the included angle between the direction and the corresponding position of the side wall of the outer cover 20 is also 45 degrees.

[0084] Specifically, the compressed air input module inputs compressed air to the first right-angle air pipe 30 and the second right-angle air pipe 50.

[0085] In actual operation, due to the special angle setting of the first right-angle air pipe 30 and the second right-angle air pipe 50, when the compressed air enters the annular containing space inside the outer cover 20 from the first output port 32 and the second output port, it will first pass through the input gas path 211 and become a vortex gas spiral spiraling upwards around the light path inner core 10 in the input gas path 211; when the compressed air rises to touch the top cover sealing plate 40 on the top wall of the outer cover 20, the input gas path 211 divides the compressed air into hot gas flow and cold gas flow; the hot gas flow enters the first gas path 212 and is finally discharged from the left hot gas outlet hole and the right hot gas outlet hole respectively, and the discharge rate is controlled by the first micro electromagnetic valve 60 and the second micro electromagnetic valve 70; the cold gas flow enters the second gas path 221 and is finally discharged from the second outlet hole 22, realizing the cooling of the laser cutting head nozzle end.

[0086] Specifically, from the output ports of the two right-angle air pipes, due to the inclination of the output ports by a certain angle, a vortex gas spiral is formed inside the vortex cooling device, and the vortex gas flow will rebound when it touches the bottom, flows upwards, and then forms a turbulent flow with the input gas flow. At this time, most of the gas flow flows close to the outer wall, and the rebounding gas flow is transmitted upwards along the inside, and the friction between the two gas flows forms a heat exchange process. After this process, the hot gas flow is discharged from the first outlet hole 21, and the cold gas flow touches the top end and is transmitted downwards to the second outlet hole 22, outputting the cold gas flow with a lower temperature.

[0087] The vortex cooling method of the laser cutting machine in the embodiment forms a spiral rising vortex cyclone in the vortex cooling device through closed loop control and temperature detection feedback between each module after the compressed air enters the inside of the outer cover 20, the temperature detection module monitors the temperature of the vortex cooling device in real time, and the integrated control module controls the opening and closing degree of the micro electromagnetic valve, so as to keep the temperature of the vortex cooling device continuously and stably reduced, and further keep the temperature of the nozzle end of the laser cutting head in the target temperature interval to achieve dynamic stability.

[0088] The above describes in detail the embodiment of the vortex cooling method of the laser cutting machine provided by the application. The principles and implementation manners of the application are described by applying specific examples in this paper, and the above embodiment description is only used to help understand the core idea of the application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

Claims

1. A method of eddy current cooling for a laser cutting machine, characterized by, The laser cutting machine to which the vortex cooling method is applied comprises a vortex cooling device, a touch display screen, a laser cutting head nozzle end, and an integrated intelligent control panel; the vortex cooling device comprises a compressed air input module, a vortex cooling module, a temperature detection module, and a miniature electromagnetic valve; the touch display screen comprises a setting module; and the integrated intelligent control panel comprises an integrated control module; The setting module is used for pre-setting a target temperature and an air input amount required by the vortex cooling device, and generating corresponding data transmission to the integrated control module; The temperature detection module is used for monitoring the temperature of the vortex cooling device in real time, generating real-time temperature data and transmitting the real-time temperature data to the integrated control module; The integrated control module is used for acquiring data of the setting module and the temperature detection module, and controlling the compressed air input amount of the compressed air input module and the opening and closing degree of the miniature electromagnetic valve according to the data; The compressed air input module is used for inputting a corresponding amount of compressed air to the vortex cooling module according to the control of the integrated control module; The vortex cooling module is used for changing the compressed air input by the compressed air input module into a vortex cyclone, and then dividing the vortex cyclone into hot air flow and cold air flow which flow out respectively, wherein the cold air flow is used for reducing the temperature of the laser cutting head nozzle end; The miniature electromagnetic valve is used for controlling the opening and closing degree according to the control of the integrated control module, so as to control the outflow rate of the hot air flow in the vortex cooling module; The vortex cooling method comprises the following steps: S1. The setting module sets a target temperature interval and an air input amount, and generates target temperature interval data and air input data transmission to the integrated control module; S2. The integrated control module controls the compressed air input module to input a corresponding amount of compressed air to the vortex cooling module according to the air input data; S3. The vortex cooling module cools the laser cutting head nozzle end, and the temperature detection module monitors the temperature of the vortex cooling device in real time, generates real-time temperature data and transmits the real-time temperature data to the integrated control module; S4. The integrated control module compares the real-time temperature data and the target temperature interval data, controls the opening and closing degree of the miniature electromagnetic valve according to the comparison result, and then returns to step S3, so that the real-time temperature data is always within the target temperature interval; The vortex cooling device further comprises an outer cover, a top cover sealing plate, an optical path inner core, a first right-angle air pipe, and a second right-angle air pipe; the top cover sealing plate is installed on the top wall of the outer cover; the inside of the outer cover is a cavity; the optical path inner core is arranged at the center of the inside of the outer cover, and separates the inside of the outer cover into an annular containing space; the first right-angle air pipe is arranged on one side wall of the outer cover; and the second right-angle air pipe is arranged on the other side wall of the outer cover away from the first right-angle air pipe; The first right-angle air pipe comprises a first input pipe opening and a first output pipe opening; the first input pipe opening faces the outside of the outer cover; and the first output pipe opening faces the inside of the outer cover, and the included angle between the direction thereof and the corresponding side wall of the outer cover is 45 degrees; the second right-angle air pipe comprises a second input pipe opening and a second output pipe opening; the second input pipe opening faces the outside of the outer cover; and the second output pipe opening faces the inside of the outer cover, and the included angle between the direction thereof and the corresponding side wall of the outer cover is 45 degrees; The vortex cooling module comprises an input air path, a first air path and a second air path; the compressed air input module inputs compressed air into the first straight air pipe and the second straight air pipe; when the compressed air enters the annular containing space inside the cover from the first output pipe and the second output pipe, the compressed air will first pass through the input air path and become a vortex air current spirally rising around the light path inner core in the input air path; when the compressed air rises to touch the top cover sealing plate of the top wall of the cover, the input air path divides the compressed air into hot air flow and cold air flow; the hot air flow enters the first air path; the cold air flow enters the second air path; The vortex cooling module is further provided with a first air outlet hole (21) corresponding to the first air path (212) and a second air outlet hole (22) corresponding to the second air path (221); the hot air flow flows out from the first air outlet hole (21) after flowing through the first air path (212); the cold air flow flows out from the second air outlet hole (22) after flowing through the second air path (221); One end of the second air outlet hole (22) is connected with the second air path (221) and used as an outlet of the cold air flow; the laser cutting head nozzle end is located at the other end of the second air outlet hole (22).

2. The vortex cooling method according to claim 1, wherein the target temperature range in the step S1 is 5-30 degrees Celsius. The step S4 further comprises:

3. The vortex cooling method of claim 1, wherein, S4.

1. The integrated control module compares the real-time temperature data and the maximum value of the target temperature range data, and if the real-time temperature data is less than the maximum value of the target temperature range data, it is transferred to S4.2; otherwise, it is transferred to S3; S4.

2. The integrated control module controls the opening and closing degree of the micro electromagnetic valve to keep the real-time temperature data within the target temperature range. One end of the first air outlet hole (21) is connected with the first air path (212) and used as an outlet of the hot air flow; the micro electromagnetic valve is located at the other end of the first air outlet hole (21).

4. The vortex cooling method according to claim 3, characterized by, The first air outlet hole (21) is arranged on the outer side wall of the cover (20); the micro electromagnetic valve is arranged outside the cover (20) and corresponds to the position of the first air outlet hole (21); a support and a pressing plate are arranged between the micro electromagnetic valve and the cover (20) and fixedly installed on the outer side wall of the cover through the support and the pressing plate.

5. The vortex cooling method according to claim 4, characterized by The temperature detection module comprises a temperature detection sensor; the temperature detection sensor is arranged inside the micro electromagnetic valve; 6. The vortex cooling method according to claim 1 or 5, characterized by The temperature detection sensor is used for monitoring the temperature of the vortex cooling device in real time. ​

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