Variable frequency controlled flame cutting machine for cutting circular members and method of use thereof

Abstract

The application discloses a variable frequency control flame cutting machine for cutting circular components and a use method thereof, and belongs to the technical field of cutting machines. The flame cutting machine comprises a cutting torch, an igniter, a supporting mechanism, a rotating driving assembly, a moving device, a range finder assembly, an oxygen supply device and an acetylene supply device. The rotating driving assembly is installed on the supporting mechanism. The cutting torch and the igniter are installed on the moving device. The range finder assembly is used for measuring the cutting radius and the distance between the cutting torch and the cutting element. The oxygen supply device supplies oxygen for the cutting torch. The acetylene supply device supplies acetylene for the cutting torch. The igniter, the rotating driving assembly, the moving device, the range finder assembly, the oxygen supply device and the acetylene supply device are electrically connected with a control box. The flame cutting machine has the advantages of simple structure, convenient manufacturing, low investment, high automation degree, convenient movement, low requirement on the space size during use, suitability for use in complex, changeable and harsh construction site environments and strong adaptability.

Description

Technical Field

[0001] This invention relates to the field of flame cutting machine technology, specifically to a frequency-controlled flame cutting machine for cutting circular components and its usage method. Background Technology

[0002] Flame cutting technology is a commonly used processing technique in metal processing and equipment manufacturing, especially in the construction field. The usual method is to use an oxygen cylinder to supply oxygen and an acetylene cylinder to supply acetylene gas, and manually operate the flame cutter to cut the metal. This method is convenient and flexible, but it has poor safety, poor gas supply capacity, and low efficiency.

[0003] Modern metal processing technology has seen the emergence of numerous automated cutting devices. For example, invention patent application CN202110605001.9 discloses a modified flame cutting robot and its usage method. This modified flame cutting robot includes: a robotic arm that can be connected to a welding torch; a flame cutting head that is detachably connected to the robotic arm; an angle adjustment component connected to both the flame cutting head and the robotic arm, used to adjust the flame cutting head to a preset angle; and an anti-collision device fixedly connected to the robotic arm and detachably connected to the flame cutting head, used to disconnect the electrical signal when the flame cutting head is impacted. This modified flame cutting robot completes the flame cutting process by detaching the welding torch from the robotic arm and further connecting the flame cutting head to the robotic arm, achieving dual functionality in one unit, improving production efficiency, and reducing space occupation. It can also adjust the angle of the flame cutting head to meet diverse cutting needs; simultaneously, the anti-collision device protects personnel and equipment, improving safety during use.

[0004] However, the above-mentioned modified flame cutting robot requires a certain amount of space. When it needs to move around a large area on the construction site, the complex and changeable roads and environment make the modified flame cutting robot unsuitable. Furthermore, the investment in the robot is too high, making it unsuitable for use in complex, changeable, and harsh construction site environments. Summary of the Invention

[0005] The purpose of this invention is to provide a frequency-controlled flame cutting machine for cutting circular components and its usage method, aiming to improve the problems of flame cutting robots, which are not only expensive to invest in, but also unsuitable for use in complex, variable, and harsh construction site environments, and have poor adaptability.

[0006] To achieve the above objectives, according to one aspect of the present invention, a frequency-controlled flame cutting machine for cutting circular components is provided, comprising a cutting torch and an igniter, and further comprising:

[0007] Supporting institutions;

[0008] A rotary drive assembly, which is mounted on a support mechanism;

[0009] A mobile device is connected to a rotary drive assembly, which can drive the mobile device to rotate in a horizontal plane. The mobile device has a horizontal moving mechanism, a vertical moving mechanism, and a clamping mechanism. The clamping mechanism is used to clamp a cutting torch and an igniter. The clamping mechanism is mounted on the vertical moving mechanism, which can drive the clamping mechanism to move up and down. The vertical moving mechanism is mounted on the horizontal moving mechanism, which can drive the vertical moving mechanism to move horizontally.

[0010] A rangefinder assembly, comprising multiple rangefinders, is used to measure the cutting radius of the cutting torch and the distance between the cutting torch and the element being cut.

[0011] An oxygen supply device is connected to the cutting torch via an air pipeline;

[0012] The acetylene gas supply device is connected to the cutting torch via a gas pipeline;

[0013] The control box contains an igniter, a rotary drive assembly, a moving device, a rangefinder assembly, an oxygen supply device, and an acetylene supply device, all of which are electrically connected to the control box. The control box is equipped with a frequency converter, and the rotary drive assembly is electrically connected to the frequency converter.

[0014] Furthermore, the support mechanism includes a base, a column, a crossbeam, and a rotary motor mounting bracket. The lower end of the base is provided with a moving wheel, the column is vertically mounted on the base, the crossbeam is horizontally mounted on the column, and the rotary motor mounting bracket is mounted on the crossbeam.

[0015] Furthermore, the rotary drive assembly includes a rotary motor, a rotary shaft, and a rotary horizontal beam. The rotary motor is mounted on a support mechanism, the rotary shaft is vertically and rotatably mounted on the support mechanism, the rotary horizontal beam is connected to the rotary shaft, and the moving device is mounted on the rotary horizontal beam. The rotary motor is connected to a rotary motor drive gear, the rotary shaft is connected to a rotary shaft drive gear, and the rotary motor drive gear and the rotary shaft drive gear mesh with each other.

[0016] Furthermore, the rangefinder assembly includes a set of transmitting and receiving rangefinders and a reflective rangefinder. The transmitting and receiving rangefinders include a transmitting end rangefinder and a receiving end rangefinder. One of the transmitting end rangefinders is mounted at the rotation center end of the rotating horizontal beam, and the other is mounted on the moving device. The height position of the transmitting and receiving rangefinder mounted on the moving device will not change with the movement of the moving device. The reflective rangefinder is mounted on the moving device and moves synchronously with the cutting torch.

[0017] Furthermore, the horizontal moving mechanism includes a main support for the moving device, a driving motor for the moving device, a driving gear for the moving device, a limiting moving wheel for the moving device, and a moving wheel shaft for the moving device. A first rack is provided on the upper end surface of the rotating horizontal beam, the length direction of the first rack being the same as the length direction of the rotating horizontal beam. The driving motor for the moving device is mounted on the main support for the moving device, and the driving gear for the moving device is mounted on the output shaft of the driving motor for the moving device. The driving gear for the moving device meshes with the first rack. The moving wheel shaft for the moving device is fixedly connected to the main support for the moving device. The limiting moving wheel for the moving device is mounted on the moving wheel shaft for the moving device. The limiting moving wheel for the moving device is located at the lower end of the rotating horizontal beam. Both ends of the limiting moving wheel for the moving device have flange structures, and the two flange structures of the limiting moving wheel for the moving device are engaged with the rotating horizontal beam.

[0018] Furthermore, the vertical moving mechanism includes a horizontal frame of the vertical moving gripper, a vertical frame of the vertical moving gripper, a rack and pinion moving frame of the vertical moving gripper, a drive motor of the vertical moving gripper, a transmission gear of the drive motor of the vertical moving gripper, and a limiting moving wheel of the vertical moving gripper; multiple horizontal frames of the vertical moving gripper are arranged sequentially, and each is connected to the main support of the moving device; the vertical frames of the vertical moving gripper are connected to each horizontal frame of the vertical moving gripper; the drive motor of the vertical moving gripper is mounted on the horizontal frame of the vertical moving gripper, and the transmission gear of the drive motor of the vertical moving gripper is mounted on the output shaft of the drive motor; the vertical moving... Multiple vertically moving clamping limit rollers are connected to the rack and pinion frame of the movable clamping device. Each vertically moving clamping limit roller is arranged sequentially in the vertical direction. Each vertically moving clamping limit roller has a flange structure at both ends, and the flange structure of the vertically moving clamping limit roller is engaged with the vertical frame of the vertical clamping device. The rack and pinion frame of the vertical clamping device is provided with a second rack extending in the vertical direction. The second rack meshes with the transmission gear of the drive motor of the vertical clamping device. The clamping mechanism is a clamp, which is installed on the rack and pinion frame of the vertical clamping device. The cutting torch and the igniter are clamped on the clamp.

[0019] Furthermore, the oxygen supply device includes an oxygen storage tank, on which an oxygen storage pressure transmitter and an oxygen outlet pipe are installed. An oxygen regulating valve, an oxygen delivery pressure transmitter, and an oxygen flow transmitter are installed on the oxygen outlet pipe. The oxygen flow transmitter is positioned between the oxygen regulating valve and the oxygen delivery pressure transmitter. All of these components are electrically connected to a control box. An oxygen hose is connected to the outlet end of the oxygen outlet pipe, and the oxygen hose is connected to a cutting torch.

[0020] Furthermore, the acetylene supply device includes an acetylene storage tank, on which an acetylene storage pressure transmitter and an acetylene outlet pipe are installed. An acetylene regulating valve, an acetylene delivery pressure transmitter, and an acetylene flow transmitter are installed on the acetylene outlet pipe. The acetylene flow transmitter is positioned between the acetylene regulating valve and the acetylene delivery pressure transmitter. All of these components are electrically connected to a control box. An acetylene hose is connected to the outlet end of the acetylene outlet pipe, and the acetylene hose is connected to a cutting torch.

[0021] Furthermore, the control box is also equipped with a display, an operation panel, and an ignition controller. The igniter is electrically connected to the ignition controller, and the control box is connected to each controlled electrical component via cables.

[0022] According to a second aspect of the present invention, the present invention provides a method of using a flame cutting machine, a flame cutting machine for cutting circular components under frequency conversion control, comprising the following steps:

[0023] S100. Connect the control box and each controlled electrical component through cables, connect the oxygen supply device to the cutting torch, connect the acetylene supply device to the cutting torch, and check and confirm that the oxygen supply device and acetylene supply device supply pressure are normal.

[0024] S200. Move the flame cutting machine to the working position and place the steel plate to be cut.

[0025] S300, Input the cutting radius and steel plate thickness into the control box;

[0026] S400. The control box, based on the input cutting radius and the measurement data of the rangefinder assembly, controls the horizontal movement mechanism of the moving device to start and drive the moving device and the cutting torch to move horizontally, moving the cutting torch to a position corresponding to the input cutting radius; at the same time, the control box, based on the measurement data of the rangefinder assembly, controls the vertical movement mechanism of the moving device to start and drive the cutting torch to move vertically, moving the cutting torch to a cutting position close to the steel plate.

[0027] S500, the control box calculates the oxygen flow rate, acetylene flow rate and rotation speed of the rotary drive assembly based on the input steel plate thickness. The control box adjusts the flow rates of the oxygen supply device and the acetylene supply device according to the calculation results, and controls the rotation speed of the rotary drive assembly through the frequency converter.

[0028] S600, the control box controls the igniter to ignite, and the cutting torch sprays an oxyacetylene flame to cut the steel plate.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. The present invention has a simple structure, is easy to manufacture, requires little investment, has a high degree of automation, is easy to move, and has low space requirements when used. It is suitable for use in complex, variable, and harsh construction site environments and has strong adaptability.

[0031] 2. This invention uses frequency conversion control technology, which is applied to flame cutting to achieve controllable and adjustable cutting speed, ensuring that the cutting speed can be balanced while ensuring that the cutting element can be cut through.

[0032] 3. This invention uses a rangefinder to measure distance, enabling precise measurement and real-time adjustment of the cutting radius, which can effectively ensure cutting accuracy. At the same time, it can automatically adjust the distance between the cutting torch and the component being cut, realizing automated control of the cutting torch station.

[0033] 4. This invention uses an ignition controller for ignition, which automates the flame cutting ignition process.

[0034] 5. This invention employs an automatic monitoring method to automatically monitor the gas supply system and automatically control and adjust the cutting gas pressure and flow rate, ensuring the accuracy of the adjustment and thus guaranteeing the cutting quality. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the flame cutting machine provided by the present invention;

[0036] Figure 2 This is a top view of the base of the flame cutting machine provided by the present invention;

[0037] Figure 3 This is a schematic diagram of the rotating horizontal beam of the flame cutting machine provided by the present invention;

[0038] Figure 4 This is a schematic diagram of the horizontal moving mechanism of the moving device of the flame cutting machine provided by the present invention;

[0039] Figure 5 This is a schematic diagram of the up-and-down moving mechanism of the moving device of the flame cutting machine provided by the present invention;

[0040] Figure 6 This is a schematic diagram of the control box of the flame cutting machine provided by the present invention;

[0041] Figure 7 This is a schematic diagram of the oxygen supply device for the flame cutting machine provided by the present invention;

[0042] Figure 8 This is a schematic diagram of the acetylene gas supply device for the flame cutting machine provided by the present invention.

[0043] Attached reference numerals: 1. Base; 1-1. Horizontal brace; 1-2. Vertical brace;

[0044] 2. Column; 3. Horizontal beam; 4. Rotary motor mounting bracket; 5. Rotary motor; 6. Rotary motor transmission gear; 7. Rotary shaft; 8. Rotary horizontal beam;

[0045] 9. Control box; 9-1 Cable; 9-2 Display; 9-3 Variable frequency controller; 9-4 Operation panel; 9-5 Ignition controller;

[0046] 10. Oxygen supply device; 10-1 Oxygen regulating valve; 10-2 Oxygen delivery pressure transmitter; 10-3 Oxygen flow transmitter; 10-4 Oxygen storage pressure transmitter; 10-5 Oxygen hose; 10-6 Oxygen outlet pipe;

[0047] 11. Acetylene gas supply device; 11-1. Acetylene regulating valve; 11-2. Acetylene delivery pressure transmitter; 11-3. Acetylene flow transmitter; 11-4. Acetylene storage pressure transmitter; 11-5. Acetylene hose; 11-6. Acetylene outlet pipe;

[0048] 12. Transmitter / Receiver Rangefinder; 13. Moving Device; 14. Rotary Shaft Drive Gear; 15. First Rack; 16. Moving Device Drive Motor; 17. Moving Device Drive Gear; 18. Moving Device Limiting Wheel; 19. Moving Device Wheel Shaft; 20. Moving Device Main Support; 21. Reflective Rangefinder; 22. Up-and-Down Moving Clamp Horizontal Frame; 23. Up-and-Down Moving Clamp Vertical Frame; 24. Up-and-Down Moving Clamp Rack Moving Frame; 25. Up-and-Down Moving Clamp Drive Motor; 26. Up-and-Down Moving Clamp Drive Motor Drive Gear; 27. Up-and-Down Moving Clamp Limiting Wheel; 28. Clamp; 29. ​​Cutting Gun. Detailed Implementation

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0051] Example 1

[0052] This embodiment provides a frequency-controlled flame cutting machine for cutting circular components, including a cutting torch 29, an igniter, a support mechanism, a rotary drive assembly, a moving device 13, a rangefinder assembly, a control box 9, an oxygen supply device 10, and an acetylene supply device 11. The cutting torch 29 and the igniter are mounted on the moving device 13, and the igniter is used to ignite the cutting torch 29. The igniter, rotary drive assembly, moving device 13, rangefinder assembly, oxygen supply device 10, and acetylene supply device 11 are all electrically connected to the control box 9.

[0053] like Figure 1 and Figure 2 As shown, the support mechanism includes a base 1, a column 2, a crossbeam 3, and a rotary motor mounting bracket 4. The lower end of the base 1 is equipped with casters. The base 1 consists of multiple horizontal supports 1-1 and multiple vertical supports 1-2. The column 2 is vertically installed at the intersection of the horizontal supports 1-1 and the vertical supports 1-2. The crossbeam 3 is horizontally installed on the column 2, and the rotary motor mounting bracket 4 is installed on the crossbeam 3.

[0054] like Figure 1 and Figure 3 As shown, the rotary drive assembly includes a rotary motor 5, a rotary shaft 7, and a rotary horizontal beam 8. The rotary motor 5 is mounted on a rotary motor mounting bracket 4. The rotary shaft 7 is vertically and rotatably mounted on the beam 3. The rotary motor 5 is connected to a rotary motor transmission gear 6, and the rotary shaft 7 is connected to a rotary shaft transmission gear 14. The rotary motor transmission gear 6 and the rotary shaft transmission gear 14 mesh with each other. The rotary horizontal beam 8 is connected to the lower end of the rotary shaft 7. A first rack 15 is provided on the upper surface of the rotary horizontal beam 8, and the length direction of the first rack 15 is the same as the length direction of the rotary horizontal beam 8. A moving device 13 is mounted on the rotary horizontal beam 8. The rotary motor 5 can drive the rotary shaft transmission gear 14 and the rotary shaft 7 to rotate through the rotary motor transmission gear 6, thereby driving the rotary horizontal beam 8 and the moving device 13 mounted on the rotary horizontal beam 8 to rotate. Therefore, the rotary drive assembly can drive the moving device 13 to rotate in the horizontal plane.

[0055] like Figure 4 and Figure 5As shown, the moving device 13 has a horizontal moving mechanism, a vertical moving mechanism, and a clamping mechanism. The clamping mechanism is used to clamp the cutting torch 29 and the igniter. The horizontal moving mechanism includes a main support 20, a drive motor 16, a drive gear 17, a limiting wheel 18, and a shaft 19. The drive motor 16 is mounted on the main support 20, and the drive gear 17 is mounted on the output shaft of the drive motor 16. The drive gear 17 meshes with the first rack 15. The shaft 19 is fixedly connected to the main support 20. The limiting wheel 18 is mounted on the shaft 19 and is located at the lower end of the rotating horizontal beam 8. The limiting wheel 18 has flange structures at both ends, and the two flange structures of the limiting wheel 18 are engaged with the rotating horizontal beam 8. Start the mobile device drive motor 16, which drives the mobile device drive gear 17 to rotate, thereby moving the main support 20 of the mobile device along the rotating horizontal beam 8.

[0056] like Figure 4 and Figure 5As shown, the vertical moving mechanism includes a horizontal frame 22, a vertical frame 23, a rack and pinion moving frame 24, a drive motor 25, a transmission gear 26, and a limiting wheel 27. Multiple horizontal frames 22 are arranged sequentially, each connected to the main support 20 of the moving device. The vertical frames 23 are connected to each horizontal frame 22. The drive motor 25 is mounted on the horizontal frame 22, and the transmission gear 26 is mounted on the output shaft of the drive motor 25. Two vertically moving clamping device limiting wheels 27 are connected to the rack and pinion frame 24 of the vertically moving clamping device. Each vertically moving clamping device limiting wheel 27 is arranged sequentially in the vertical direction. Each vertically moving clamping device limiting wheel 27 has flange structures at both ends, and these flange structures are engaged with the vertically moving clamping device vertical frame 23. A second rack extending vertically is provided on the rack and pinion frame 24 of the vertically moving clamping device. The second rack meshes with the transmission gear 26 of the vertically moving clamping device drive motor. The clamping mechanism is a clamp 28, which is mounted on the rack and pinion frame 24 of the vertically moving clamping device. The cutting torch 29 and the igniter are clamped on the clamp 28. Start the up-and-down moving clamp drive motor 25. The up-and-down moving clamp drive motor 25 drives the up-and-down moving clamp drive motor transmission gear 26 to rotate, which in turn drives the up-and-down moving clamp rack moving frame 24 and the clamp 28 installed on the up-and-down moving clamp rack moving frame 24 to move up and down. This drives the cutting torch 29 and the igniter to move up and down, which can be used to adjust the distance between the cutting torch 29 and the steel plate being cut.

[0057] like Figure 1 , Figure 4 and Figure 5 As shown, the rangefinder assembly includes a set of transmitting and receiving rangefinders 12 and a reflecting rangefinder 21. The transmitting and receiving rangefinders 12 include a transmitting end rangefinder and a receiving end rangefinder. One transmitting end rangefinder is mounted at the rotation center end of the rotating horizontal beam 8, and the other is mounted on the moving device 13. The height of the transmitting and receiving rangefinder 12 mounted on the moving device 13 does not change with the movement of the moving device 13, such as when it is mounted on the main support 20 of the moving device. The transmitting end rangefinder and the receiving end rangefinder are used in pairs to measure the distance between the cutting torch 29 and the rotation center. The reflecting rangefinder 21 is mounted on the vertical moving clamp rack moving frame 24, so it can move up and down synchronously with the cutting torch 29. The reflecting rangefinder 21 is used to measure the distance between the cutting torch 29 and the steel plate to be cut. Each rangefinder in the rangefinder assembly is connected to the control box 9 via cable 9-1.

[0058] like Figure 7 As shown, the oxygen supply device 10 includes an oxygen storage tank, on which an oxygen storage pressure transmitter 10-4 and an oxygen outlet pipe 10-6 are installed. An oxygen regulating valve 10-1, an oxygen delivery pressure transmitter 10-2, and an oxygen flow transmitter 10-3 are installed on the oxygen outlet pipe 10-6. The oxygen flow transmitter 10-3 is positioned between the oxygen regulating valve 10-1 and the oxygen delivery pressure transmitter 10-2. The oxygen regulating valve 10-1, oxygen delivery pressure transmitter 10-2, oxygen flow transmitter 10-3, and oxygen storage pressure transmitter 10-4 are all electrically connected to the control box 9. The oxygen storage pressure transmitter 10-4 transmits the oxygen pressure in the oxygen storage tank to the control box 9. When the pressure falls below the pressure threshold set in the control box 9, the control box 9 alarms, indicating insufficient oxygen pressure for the personnel and requiring replenishment. The oxygen regulating valve 10-1 regulates the oxygen pressure and flow rate to the set value. The oxygen delivery pressure transmitter 10-2 and the oxygen flow transmitter 10-3 display and transmit the pressure and flow values ​​to the control box 9. The oxygen outlet pipe 10-6 is connected to an oxygen hose 10-5 at its outlet end. The oxygen hose 10-5 is connected to the cutting torch 29 to supply oxygen to the cutting torch 29.

[0059] like Figure 8 As shown, the acetylene supply device 11 includes an acetylene storage tank. An acetylene storage pressure transmitter 11-4 and an acetylene outlet pipe 11-6 are installed on the acetylene storage tank. An acetylene regulating valve 11-1, an acetylene delivery pressure transmitter 11-2, and an acetylene flow transmitter 11-3 are installed on the acetylene outlet pipe 11-6. The acetylene flow transmitter 11-3 is positioned between the acetylene regulating valve 11-1 and the acetylene delivery pressure transmitter 11-2. All three devices—acetylene regulating valve 11-1, acetylene delivery pressure transmitter 11-2, acetylene flow transmitter 11-3, and acetylene storage pressure transmitter 11-4—are electrically connected to a control box 9. The acetylene storage pressure transmitter 11-4 transmits the acetylene pressure from the storage tank to the control box 9. When the pressure falls below the set threshold in the control box 9, an alarm is triggered, indicating to the personnel that the acetylene pressure is insufficient and needs to be replenished. The acetylene regulating valve 11-1 regulates the pressure and flow rate of acetylene to the set values. The acetylene delivery pressure transmitter 11-2 and the acetylene flow transmitter 11-3 display and transmit the pressure and flow values ​​to the control box 9. The outlet end of the acetylene outlet pipe 11-6 is connected to an acetylene hose 11-5, which is connected to the cutting torch 29 to supply acetylene to the cutting torch 29.

[0060] like Figure 6As shown, the control box 9 contains a PLC controller, a display 9-2, a frequency converter 9-3, an operation panel 9-4, and an ignition controller 9-5. The igniter is electrically connected to the ignition controller 9-5. The control box 9 is connected to each controlled electrical component via cable 9-1. The frequency converter 9-3 is electrically connected to the rotary motor 5 and is used to control the rotation speed during cutting.

[0061] Example 2

[0062] This embodiment provides a method for using a flame cutting machine, specifically the frequency-controlled flame cutting machine for cutting circular components provided in Embodiment 1. The steps are as follows:

[0063] S100. Connect the control box 9 and each controlled electrical component via cable 9-1. Connect the oxygen supply device 10 to the cutting torch 29, and connect the acetylene supply device 11 to the cutting torch 29. Check and confirm that the supply pressure of the oxygen supply device 10 and the acetylene supply device 11 is normal. Simply turn on the power, and the oxygen storage pressure transmitter 10-4 and the acetylene storage pressure transmitter 11-4 will transmit pressure signals to the control box. If the transmitted pressure is lower than the pressure threshold set in the control box 9, the control box 9 will alarm.

[0064] S200. Move the flame cutter to the working position and place the steel plate to be cut. The steel plate should be parallel to the rotating horizontal beam 8.

[0065] S300, input the cutting radius and steel plate thickness into the control box 9.

[0066] S400 and control box 9, based on the input cutting radius and measurement data from the rangefinder assembly, control the movement device drive motor 16 of the moving device 13 to start, driving the moving device 13, the cutting torch 29, and a transmitting / receiving rangefinder 12 to move horizontally, moving the cutting torch 29 to a position corresponding to the input cutting radius. Simultaneously, based on the measurement data from the rangefinder assembly, control box 9 controls the up-and-down movement clamp drive motor 25 of the moving device 13 to start, driving the cutting torch 29 and the reflective rangefinder 21 to move vertically, moving the cutting torch 29 to a cutting position close to the steel plate.

[0067] S500 and control box 9 calculate the oxygen flow rate, acetylene flow rate, and rotation speed of the rotary drive component based on the input steel plate thickness. Based on the calculation results, they adjust the flow rates of oxygen supply device 10 and acetylene supply device 11. At the same time, they control the rotation speed of rotary motor 5 through frequency converter 9-3 to ensure that the steel plate can be cut through while taking into account the cutting speed.

[0068] The S600 and control box 9 control the igniter to ignite, and the cutting torch 29 sprays an oxyacetylene flame to cut the steel plate.

[0069] In summary, this invention features a simple structure, convenient manufacturing, low investment, high automation, and easy mobility. It requires minimal space and is suitable for use in complex, variable, and harsh construction environments, demonstrating strong adaptability. This invention employs frequency conversion control technology, applying it to flame cutting to achieve controllable and adjustable cutting speed, ensuring both the ability to penetrate the component being cut and maintaining cutting speed. This invention utilizes automatic control technology to automatically control and adjust the supply of cutting gas. This invention uses a rangefinder for distance measurement, enabling precise measurement and real-time adjustment of the cutting radius, effectively ensuring cutting accuracy. It also automatically adjusts the distance between the cutting torch 29 and the component being cut, achieving automated control of the cutting station of the cutting torch 29. This invention uses an ignition controller for ignition, achieving automated flame cutting ignition. This invention employs an automatic monitoring method to automatically monitor the gas supply system and automatically control and adjust the cutting gas pressure and flow rate, ensuring adjustment accuracy and thus guaranteeing cutting quality.

[0070] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A frequency-controlled flame cutting machine for cutting circular components, comprising a cutting torch (29) and an igniter, characterized in that, Also includes: Supporting institutions; A rotary drive assembly, which is mounted on a support mechanism; The moving device (13) is connected to the rotary drive assembly, which can drive the moving device (13) to rotate in the horizontal plane. The moving device (13) has a horizontal moving mechanism, an up-down moving mechanism and a clamping mechanism. The clamping mechanism is used to clamp the cutting gun (29) and the igniter. The clamping mechanism is installed on the up-down moving mechanism, which can drive the clamping mechanism to move up and down. The up-down moving mechanism is installed on the horizontal moving mechanism, which can drive the up-down moving mechanism to move horizontally. The rotary drive assembly includes a rotary motor (5), a rotary shaft (7) and a rotary horizontal beam (8). The rotary motor (5) is installed on the support mechanism. The rotary shaft (7) is vertical and rotatably installed on the support mechanism. The rotary horizontal beam (8) is connected to the rotary shaft (7). The moving device (13) is installed on the rotary horizontal beam (8). The rangefinder assembly includes multiple rangefinders used to measure the cutting radius of the cutting torch (29) and the distance between the cutting torch (29) and the element being cut. The rangefinder assembly includes a set of transmitting and receiving rangefinders (12) and a reflecting rangefinder (21). The set of transmitting and receiving rangefinders (12) includes a transmitting end rangefinder and a receiving end rangefinder. One of the transmitting end rangefinders and the receiving end rangefinder is installed at the rotation center end of the rotating horizontal beam (8), and the other is installed on the moving device (13). The height position of the transmitting and receiving rangefinder (12) installed on the moving device (13) does not change with the movement of the moving device (13). The reflecting rangefinder (21) is installed on the moving device (13) and moves synchronously with the cutting torch (29). The oxygen supply device (10) is connected to the cutting torch (29) via an air pipeline; An acetylene gas supply device (11) is connected to a cutting torch (29) via a gas pipeline; The control box (9) is electrically connected to the igniter, the rotary drive assembly, the moving device (13), the rangefinder assembly, the oxygen supply device (10), and the acetylene supply device (11). The control box (9) is equipped with a frequency converter (9-3), and the rotary drive assembly is electrically connected to the frequency converter (9-3).

2. The frequency-controlled flame cutting machine for cutting circular components according to claim 1, characterized in that, The support mechanism includes a base (1), a column (2), a crossbeam (3), and a rotary motor mounting bracket (4). The lower end of the base (1) is provided with a moving wheel. The column (2) is vertically mounted on the base (1). The crossbeam (3) is horizontally mounted on the column (2). The rotary motor mounting bracket (4) is mounted on the crossbeam (3).

3. The frequency-controlled flame cutting machine for cutting circular components according to claim 1, characterized in that, The rotary motor (5) is connected to a rotary motor drive gear (6), and the rotary shaft (7) is connected to a rotary shaft drive gear (14). The rotary motor drive gear (6) and the rotary shaft drive gear (14) mesh with each other.

4. A frequency-controlled flame cutting machine for cutting circular components according to claim 1, characterized in that, The horizontal moving mechanism includes a main support (20) for the moving device, a driving motor (16) for the moving device, a driving gear (17) for the moving device, a limiting moving wheel (18) for the moving device, and a shaft (19) for the moving wheel for the moving device. A first rack (15) is provided on the upper end face of the rotating horizontal beam (8), and the length direction of the first rack (15) is the same as the length direction of the rotating horizontal beam (8). The driving motor (16) for the moving device is mounted on the main support (20) for the moving device, and the driving gear for the moving device is mounted on the output shaft of the driving motor (16). The moving gear (17) meshes with the first rack (15); the moving wheel shaft (19) of the moving device is fixedly connected to the main support (20) of the moving device; the moving wheel (18) of the moving device is mounted on the moving wheel shaft (19) of the moving device; the moving wheel (18) of the moving device is located at the lower end of the rotating horizontal beam (8); the two ends of the moving wheel (18) of the moving device have flange structures; the two flange structures of the moving wheel (18) of the moving device are engaged on the rotating horizontal beam (8).

5. A frequency-controlled flame cutting machine for cutting circular components according to claim 4, characterized in that, The up-and-down moving mechanism includes an up-and-down moving clamp horizontal frame (22), an up-and-down moving clamp vertical frame (23), an up-and-down moving clamp rack moving frame (24), an up-and-down moving clamp drive motor (25), an up-and-down moving clamp drive motor transmission gear (26), and an up-and-down moving clamp limiting moving wheel (27); multiple up-and-down moving clamp horizontal frames (22) are arranged sequentially, and all are connected to the main support (20) of the moving device; the up-and-down moving clamp vertical frame (23) is connected to each up-and-down moving clamp horizontal frame (22); the up-and-down moving clamp drive motor (25) is mounted on the up-and-down moving clamp horizontal frame (22), and the up-and-down moving clamp drive motor transmission gear (26) is mounted on the output shaft of the up-and-down moving clamp drive motor (25); the up-and-down moving clamp limit moving wheel (27) is arranged in a row; multiple up-and-down moving clamp horizontal frames (22) are arranged sequentially, and all are connected to the main support (20) of the moving device; the up-and-down moving clamp vertical frame (23) is connected to each up-and-down moving clamp horizontal frame (22); the up-and-down moving clamp drive motor (25) is mounted in a row; the up-and-down moving clamp rack moving frame (24), the up-and-down moving clamp drive motor (25) transmission gear (26) is mounted on the output shaft of the up-and-down moving clamp drive motor (25); the up-and-down moving clamp rack moving frame (24), the up-and-down moving clamp rack moving frame (25 ... Multiple vertical moving clamp limit moving wheels (27) are connected to the moving clamp rack moving frame (24). Each vertical moving clamp limit moving wheel (27) is arranged sequentially in the vertical direction. The vertical moving clamp limit moving wheel (27) has flange structures at both ends. The flange structures of the vertical moving clamp limit moving wheel (27) are locked on the vertical moving clamp vertical frame (23). The vertical moving clamp rack moving frame (24) is provided with a second rack extending in the vertical direction. The second rack meshes with the transmission gear (26) of the vertical moving clamp drive motor. The clamping mechanism is a clamp (28). The clamp (28) is installed on the vertical moving clamp rack moving frame (24). The cutting torch (29) and the igniter are clamped on the clamp (28).

6. A frequency-controlled flame cutting machine for cutting circular components according to claim 1, characterized in that, The oxygen supply device (10) includes an oxygen storage tank, on which an oxygen storage pressure transmitter (10-4) and an oxygen outlet pipe (10-6) are installed. On the oxygen outlet pipe (10-6), an oxygen regulating valve (10-1), an oxygen delivery pressure transmitter (10-2), and an oxygen flow transmitter (10-3) are installed. The oxygen flow transmitter (10-3) is located between the oxygen regulating valve (10-1) and the oxygen delivery pressure transmitter (10-2). The oxygen regulating valve (10-1), the oxygen delivery pressure transmitter (10-2), the oxygen flow transmitter (10-3), and the oxygen storage pressure transmitter (10-4) are all electrically connected to the control box (9). An oxygen hose (10-5) is connected to the outlet end of the oxygen outlet pipe (10-6), and the oxygen hose (10-5) is connected to the cutting torch (29).

7. A frequency-controlled flame cutting machine for cutting circular components according to claim 1, characterized in that, The acetylene supply device (11) includes an acetylene storage tank, on which an acetylene storage pressure transmitter (11-4) and an acetylene outlet pipe (11-6) are installed. An acetylene regulating valve (11-1), an acetylene delivery pressure transmitter (11-2), and an acetylene flow transmitter (11-3) are installed on the acetylene outlet pipe (11-6). The acetylene flow transmitter (11-3) is located on the acetylene regulating valve (11-4). 1) Between the acetylene regulating valve (11-1), the acetylene delivery pressure transmitter (11-2), the acetylene flow transmitter (11-3), and the acetylene storage pressure transmitter (11-4) are all electrically connected to the control box (9); the outlet end of the acetylene outlet pipe (11-6) is connected to an acetylene hose (11-5), and the acetylene hose (11-5) is connected to the cutting torch (29).

8. A frequency-controlled flame cutting machine for cutting circular components according to claim 1, characterized in that, The control box (9) is also equipped with a display (9-2), an operation panel (9-4), and an ignition controller (9-5). The igniter is electrically connected to the ignition controller (9-5), and the control box (9) is connected to each controlled electrical component via a cable (9-1).

9. A method of using a flame cutting machine, for use with a frequency-controlled flame cutting machine for cutting circular components as described in any one of claims 1-8, characterized in that, Includes the following steps: S100. Connect the control box (9) and each controlled electrical component through the cable (9-1), connect the oxygen supply device (10) and the cutting torch (29), connect the acetylene supply device (11) and the cutting torch (29), and check and confirm that the oxygen supply device (10) and the acetylene supply device (11) have normal supply pressure. S200. Move the flame cutting machine to the working position and place the steel plate to be cut. S300, Input the cutting radius and steel plate thickness into the control box (9); S400, the control box (9) controls the horizontal movement mechanism of the moving device (13) to start and drive the moving device (13) and the cutting torch (29) to move horizontally according to the input cutting radius and the measurement data of the rangefinder assembly, so as to move the cutting torch (29) to the position corresponding to the input cutting radius; at the same time, the control box (9) controls the vertical movement mechanism of the moving device (13) to start and drive the cutting torch (29) to move vertically according to the measurement data of the rangefinder assembly, so as to move the cutting torch (29) to the cutting station close to the steel plate; S500, the control box (9) calculates the oxygen flow rate, acetylene flow rate and rotation speed of the rotary drive assembly based on the input steel plate thickness. The control box (9) adjusts the flow rates of the oxygen supply device (10) and the acetylene supply device (11) based on the calculation results, and controls the rotation speed of the rotary drive assembly through the frequency converter (9-3). S600, the control box (9) controls the igniter to ignite, and the cutting torch (29) sprays an oxyacetylene flame to cut the steel plate.

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