Cutting head mechanism of flame cutting device and flame cutting device

Abstract

The invention discloses a cutting head mechanism of a flame cutting device and the flame cutting device, and relates to the technical field of flame cutting devices.The cutting head mechanism comprises a front end assembly, a connecting frame, a fuel winding drum, a feeding assembly and a control module. The fuel winding drum comprises a winding drum support rotationally connected to the connecting frame, a gas supply assembly is installed on the winding drum support, the front end assembly comprises an ignition electrode, a supporting frame and an ignition cylinder, the ignition cylinder is used for driving the ignition electrode to move relative to the supporting frame, and the supporting frame is used for allowing a fuel rod to penetrate out; the ignition electrode and the supporting frame are electrically connected with the positive electrode and the negative electrode of the main machine power source respectively, the feeding assembly is installed on the connecting frame and located between the front end assembly and the fuel winding drum, the feeding assembly is used for conveying fuel rods on the fuel winding drum to the front end assembly, and the control module is used for controlling the feeding assembly, the ignition cylinder and the air supply assembly to be started and stopped. According to the cutting head mechanism of the flame cutting device, the problems that the cutting operation efficiency is low and the danger to operators is large are solved.

Description

Technical Field

[0001] This application relates to the technical field of flame cutting devices, and particularly to a cutting head mechanism of a flame cutting device and a flame cutting device. Background Art

[0002] Currently, in the event of a fire accident in an oil and gas field, after completing the hydraulic cutting operation on the out-of-control wellhead, a flame cutting device uses the heat and blowing force generated by the combustion of a magnesium strip in sufficient industrial oxygen to perform flame cutting and removal of the remaining flange bolts.

[0003] In the existing system, the flame cutting method is that a person wears high-temperature protective clothing and holds a fuel rod to enter the position close to the wellhead for cutting. Each fuel rod for one-time cutting is only 3 meters long. After burning and cutting, another person needs to enter. The one-time cutting time is short, which affects the operation efficiency. At the same time, it is very dangerous for the operating personnel. Summary of the Invention

[0004] The purpose of this application is to provide a cutting head mechanism of a flame cutting device and a flame cutting device, which solves the problems of low cutting operation efficiency and high danger to operating personnel.

[0005] To achieve the above purpose, this application provides a cutting head mechanism of a flame cutting device, including:

[0006] A connecting frame for connecting with the main body of the flame cutting device;

[0007] A fuel reel, including a reel bracket for winding and unwinding the fuel rod. The reel bracket is rotatably connected to the connecting frame, and a gas supply component for supplying oxygen to the fuel rod is installed on the reel bracket;

[0008] A front-end component, arranged on the side of the connecting frame away from the fuel reel, including an ignition electrode, a support frame, and an ignition electric cylinder. The ignition electric cylinder and the ignition electrode are arranged on the support frame. The ignition electric cylinder is used to drive the ignition electrode to move relative to the support frame. The support frame is used for the fuel rod to pass through. The ignition electrode and the support frame are electrically connected to the positive and negative electrodes of the main body power supply respectively;

[0009] A feeding component, installed on the connecting frame and located between the front-end component and the fuel reel, for transporting the fuel rod on the fuel reel to the front-end component;

[0010] A control module, electrically connected to the feeding component, the ignition electric cylinder, and the gas supply component, for controlling the opening and closing of the feeding component, the ignition electric cylinder, and the gas supply component.

[0011] In some embodiments, the front-end component further includes:

[0012] An insulating plate, fixed to one end of the support frame away from the connecting frame, for electrically isolating the ignition electrode from the support frame;

[0013] The guide sleeve passes through the insulating plate and is used for the fuel rod to pass through and enter a standby state.

[0014] In some embodiments, a vision module for monitoring the material cutting state is provided on one side of the insulating plate close to the connecting frame;

[0015] The front-end assembly further includes a spray pipe. The spray pipe is arranged in the support frame and is used to communicate with the water supply pipeline of the main machine to spray cooling water to the vision module and the ignition cylinder.

[0016] In some embodiments, the air supply assembly includes:

[0017] A hollow shaft is installed on the first side of the reel bracket;

[0018] A rotary joint is communicated with the first end of the hollow shaft and is used to connect the oxygen supply pipeline of the main machine;

[0019] A fixed joint is communicated with the second end of the hollow shaft;

[0020] An air supply hose is communicated with the fixed joint and the pipe orifice at the tail end of the fuel rod and is used to transport the oxygen in the hollow shaft to the fuel rod.

[0021] In some embodiments, the feeding assembly includes:

[0022] A support seat is fixed to the connecting frame;

[0023] A driving wheel is rotatably connected to the support seat;

[0024] A servo motor and a speed reducer. The servo motor is connected to the speed reducer, and the speed reducer is connected to the driving wheel to drive the driving wheel to rotate;

[0025] A pressing wheel is arranged opposite to the driving wheel and is used to cooperate with the driving wheel to provide the power for transporting the fuel rod.

[0026] In some embodiments, the pressing wheel is movably installed below the driving wheel. The feeding assembly further includes an adjusting bolt, and the gap between the pressing wheel and the driving wheel is adjusted through the adjusting bolt to adjust the driving force of the driving wheel on the fuel rod and prevent slipping.

[0027] In some embodiments, the cutting head mechanism further includes a straightening assembly. The straightening assembly is arranged between the feeding assembly and the fuel reel, and the straightening assembly includes:

[0028] A straightening bracket is fixed to the connecting frame;

[0029] At least two groups of straightening rollers are rotatably connected to the straightening bracket and are used to straighten the fuel rod and then feed it into the feeding assembly.

[0030] In some embodiments, the cutting head mechanism further includes a material pressing component, which is disposed on the side of the straightening component away from the feeding component. The material pressing component is used to abut against the fuel rods on the fuel reel to prevent the fuel rods on the fuel reel from becoming loose or sagging.

[0031] In some embodiments, a current inductor is provided on the connection line of the ignition electrode. The current inductor is electrically connected to the control module. When the ignition electrode contacts the fuel rod to form a short circuit for ignition, the current inductor senses the current signal and transmits it to the control module. The control module then activates the feeding component and the gas supply component to enable the fuel rod to start burning.

[0032] This application also provides a flame cutting device, including the cutting head mechanism of the flame cutting device according to any one of the above.

[0033] Relative to the above background art, the cutting head mechanism of the flame cutting device provided by the embodiments of this application includes a front-end component, a connecting frame, a fuel reel, a feeding component, and a control module. Among them, the connecting frame is used to connect to the main body of the flame cutting device. The fuel reel includes a reel bracket for winding and unwinding fuel rods. The reel bracket is rotatably connected to the connecting frame. A gas supply component for supplying oxygen to the fuel rods is installed on the reel bracket. The front-end component is disposed on the side of the connecting frame away from the fuel reel. The front-end component includes an ignition electrode, a support frame, and an ignition electric cylinder. The ignition electric cylinder and the ignition electrode are disposed on the support frame. The ignition electric cylinder is used to drive the ignition electrode to move relative to the support frame. The support frame is used for the fuel rods to pass through. The ignition electrode and the support frame are electrically connected to the positive and negative poles of the main body power supply respectively. The feeding component is installed on the connecting frame and is located between the front-end component and the fuel reel. The feeding component is used to transport the fuel rods on the fuel reel to the front-end component. The control module is electrically connected to the feeding component, the ignition electric cylinder, and the gas supply component. The control module is used to control the opening and closing of the feeding component, the ignition electric cylinder, and the gas supply component.

[0034] In this way, for fuel combustion cutting, ignition is required first. Since the ignition electrode and the support frame are electrically connected to the positive and negative poles of the main body power supply of the flame cutting device respectively, when the ignition electric cylinder drives the ignition electrode to extend forward, the ignition electrode can contact the extended fuel rod, form a short circuit to generate an electric arc to burn through the outer tube of the fuel rod, and the internal metal fuel is ignited and starts to burn under the condition of oxygen supply. Among them, when the ignition electrode contacts the fuel rod to form a short circuit for ignition, the control module quickly starts the feeding component to start automatic feeding, and at the same time activates the gas supply component to start automatic oxygen supply. The fuel rod starts to burn. Then the control module controls the ignition electric cylinder to automatically retract backward to prevent the ignition electrode from being burned out. When an input instruction stops the operation of the feeding component to stop the forward extension of the fuel, the control module simultaneously automatically closes the gas supply component. Conversely, when an input instruction closes the gas supply component, the control module simultaneously automatically controls the stop of the operation of the feeding component to stop the forward extension of the fuel.

[0035] The cutting head mechanism of the flame cutting device set as such has the following beneficial effects: on the one hand, the cutting head mechanism of the flame cutting device provided by the embodiments of the present application uses a fuel reel to supply materials, enabling a loading of more than 30 meters at a time, thus realizing continuous automatic combustion cutting operations. Compared with cutting using traditional hand-held fuel rods, the cutting operation efficiency is greatly improved; on the other hand, the cutting head mechanism of the flame cutting device provided by the embodiments of the present application adopts automatic control operations. Specifically, the feeding component, the ignition cylinder, and the air supply component are controlled by a control module to open and close, so as to realize automatic combustion cutting operations. Compared with the traditional manual operation method, the operation safety is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative efforts.

[0037] Figure 1 It is a schematic diagram of the overall structure of the cutting head mechanism of the flame cutting device in the embodiments of the present application;

[0038] Figure 2 is Figure 1 a schematic diagram of the structure of the front-end component in the shown cutting head mechanism;

[0039] Figure 3 is Figure 1 a front view of the fuel reel in the shown cutting head mechanism;

[0040] Figure 4 is Figure 1 a side view of the fuel reel in the shown cutting head mechanism;

[0041] Figure 5 is Figure 1 a schematic diagram of the structure of the feeding component in the shown cutting head mechanism;

[0042] Figure 6 is Figure 1 a schematic diagram of the structure of the straightening component in the shown cutting head mechanism.

[0043] Wherein:

[0044] 1. Front-end component; 2. Connecting frame; 3. Fuel reel; 4. Feeding component; 5. Straightening component; 6. Pressure-feeding component; 7. Fuel rod;

[0045] 1-1. Ignition electrode; 1-2. Guide sleeve; 1-3. Insulating plate; 1-4. Support frame; 1-5. Ignition cylinder; 1-6. Spraying pipe;

[0046] 3-1, Drum Bracket; 3-2, Rotary Joint; 3-3, Bearing;

[0047] 4-1, Servo Motor; 4-2, Reducer; 4-3, Support Base; 4-4, Driving Wheel; 4-5, Adjusting Bolt; 4-6, Pressing Wheel;

[0048] 5-1, Straightening Bracket; 5-2, Straightening Roller. Detailed Implementation Manner

[0049] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0050] In order to enable those skilled in the art of this technology to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0051] Please refer to Figure 1 , the cutting head mechanism of the flame cutting device provided by the embodiment of the present application includes a front-end assembly 1, a connecting frame 2, a fuel drum 3, a feeding assembly 4, and a control module.

[0052] The connecting frame 2 is used to connect with the host of the flame cutting device. The fuel drum 3 includes a drum bracket 3-1 for winding and unwinding the fuel rod 7. Bearings 3-3 are installed on both sides of the drum bracket 3-1. The drum bracket 3-1 is rotatably connected to the connecting frame 2 through the bearings 3-3 on both sides, so that the drum bracket 3-1 can freely rotate on the connecting frame 2.

[0053] The outer surface of the fuel rod 7 is a corrugated pipe sleeve, and the inside is multiple strands of fine metal wires. The fuel rods 7 are wound on the drum bracket 3-1 to form a whole. When the fuel is burned out, the gland of the bearing 3-3 on the connecting frame 2 can be manually opened, and a new drum filled with fuel can be quickly replaced.

[0054] To facilitate fuel combustion, a gas supply assembly for supplying oxygen to the fuel rod 7 is installed on the drum bracket 3-1. In this way, feeding and gas supply can be carried out simultaneously, which is convenient for improving the efficiency of burning and cutting materials.

[0055] Please refer to together Figure 2, the front-end component 1 is arranged on the side of the connecting frame 2 away from the fuel reel 3. The front-end component 1 includes an ignition electrode 1-1, a support frame 1-4, and an ignition electric cylinder 1-5. The ignition electric cylinder 1-5 and the ignition electrode 1-1 are arranged on the support frame 1-4. The ignition electric cylinder 1-5 is used to drive the ignition electrode 1-1 to move relative to the support frame 1-4. The support frame 1-4 is used for the fuel rod 7 to pass through. The ignition electrode 1-1 and the support frame 1-4 are respectively electrically connected to the positive and negative poles of the host power supply.

[0056] The feeding component 4 is installed on the connecting frame 2 and is located between the front-end component 1 and the fuel reel 3. The feeding component 4 is used to provide driving force to convey the fuel rod 7 on the fuel reel 3 to the front-end component 1.

[0057] The control module can be a controller. The control module is electrically connected to the feeding component 4, the ignition electric cylinder 1-5, and the air supply component. The control module is used to control the opening and closing of the feeding component 4, the ignition electric cylinder 1-5, and the air supply component.

[0058] In this way, for fuel combustion cutting, ignition is required first. The ignition is powered by the host of the flame cutting device. The negative pole is connected to the support frame 1-4 of the front-end component 1 through a cable, and the positive pole is connected to the ignition electrode 1-1 through a cable. That is, the ignition electrode 1-1 and the support frame 1-4 are respectively electrically connected to the positive and negative poles of the host power supply of the flame cutting device. When the ignition electric cylinder 1-5 drives the ignition electrode 1-1 to extend forward, the ignition electrode 1-1 can contact the extended fuel rod 7, forming a short circuit to generate an electric arc to burn through the outer tube of the fuel rod 7, and the internal metal fuel is ignited and starts to burn under the condition of oxygen supply.

[0059] When the ignition electrode 1-1 contacts the fuel rod 7 to form a short circuit to achieve ignition, the control module quickly starts the feeding component 4 to start automatic feeding, and at the same time starts the air supply component to start automatic oxygen supply. The fuel rod 7 starts to burn. Then the control module controls the ignition electric cylinder 1-5 to automatically retract backward to prevent the ignition electrode 1-1 from being burned out. When an input instruction stops the operation of the feeding component 4 to stop the forward extension of the fuel, the control module simultaneously automatically closes the air supply component. On the contrary, when an input instruction closes the air supply component, the control module simultaneously automatically controls the stop of the operation of the feeding component 4 to stop the forward extension of the fuel.

[0060] On the one hand, the cutting head mechanism of the flame cutting device provided by the embodiment of the present application uses a fuel reel 3 to supply materials, realizing a loading of more than 30 meters at one time, so as to realize continuous automatic combustion cutting operation. Compared with the traditional cutting with a handheld fuel rod 7, the cutting operation efficiency is greatly improved.

[0061] On the other hand, the cutting head mechanism of the flame cutting device provided by the embodiments of the present application adopts an automatic control operation. Specifically, the feeding component 4, the ignition cylinder 1-5, and the air supply component are controlled and opened and closed by a control module to achieve automatic combustion cutting operations. Compared with the traditional manual operation method, the operation safety is greatly improved.

[0062] In some embodiments, the front-end component 1 further includes a guide sleeve 1-2 and an insulating plate 1-3. Among them, the insulating plate 1-3 is fixed to one end of the support frame 1-4 away from the connecting frame 2. The insulating plate 1-3 is used to electrically isolate the ignition electrode 1-1 from the support frame 1-4; the guide sleeve 1-2 passes through the insulating plate 1-3, and the guide sleeve 1-2 is used for the fuel rod 7 to pass through and form a standby state.

[0063] Specifically, the guide sleeve 1-2 can extend from one end of the support frame 1-4 to the other end and protrude. After the fuel rod 7 passes through the guide sleeve 1-2, it protrudes forward by 150-200 mm to form a standby state. Due to the clamping and guiding effect of the guide sleeve 1-2 on the fuel rod 7, the fuel rod 7 will not swing during combustion, and stable and precise cutting can be achieved.

[0064] In this way, the ignition is powered by the main body of the flame cutting device. The negative electrode is connected to the support frame 1-4 of the front-end component 1 through a cable, and the positive electrode is connected to the ignition electrode 1-1 through a cable. The ignition electrode 1-1 forms a power isolation from the support frame 1-4 through the insulating plate 1-3. When the ignition cylinder 1-5 extends forward, the ignition electrode 1-1 connected to the front end extends forward accordingly. It is designed that there is an included angle between the ignition cylinder 1-5 and the guide sleeve 1-2, so that the forward extension of the ignition electrode 1-1 can contact the protruding fuel rod 7, forming a short circuit to generate an electric arc to burn through the outer tube of the fuel rod 7, and the internal metal fuel is ignited and starts to burn under the oxygen supply condition.

[0065] In some embodiments, a vision module is provided on one side of the insulating plate 1-3 close to the connecting frame 2. The vision module can be a camera module. The camera module is electrically connected to the control module. A through hole is provided on the corresponding insulating plate 1-3. The camera module can judge the position of the material to be cut through the through hole before cutting, so as to facilitate accurate positioning of the cutting. In addition, it can also monitor the cutting state of the material to be cut in front during the cutting process, so as to facilitate the control module to perform corresponding operations.

[0066] To facilitate the cooling of electrical components, the front-end component 1 further includes a spray pipe 1-6. The spray pipe 1-6 is arranged inside the support frame 1-4. The spray pipe 1-6 is used to communicate with the water supply pipeline of the main body to spray cooling water to the vision module and the ignition cylinder 1-5.

[0067] For example, a first nozzle can be set at a position of the spray pipe 1-6 close to the vision module, and a second nozzle can be set at a position close to the ignition cylinder 1-5. Cooling water is sprayed onto the vision module and the ignition cylinder 1-5 through the first nozzle and the second nozzle respectively.

[0068] Moreover, a spray seat is installed on the connecting frame 2. Except for a section of the spray pipe 1-6 extending into the support frame 1-4, it also includes another section extending reversely to the feeding component 4. The spray pipe 1-6 extending to the feeding component 4 is installed with a third nozzle to spray cooling water on the heating components of the feeding component 4 for cooling, so as to realize spraying and cooling of each heating component in the cutting head mechanism.

[0069] Meanwhile, a high-temperature protective sleeve can also be wrapped outside the support frame 1-4 of the front-end component 1, and a high-temperature protective sleeve can be wrapped outside the servo motor 4-1 of the feeding component 4 on the connecting frame 2, so as to form high-temperature protection for the electrical components of the cutting head device. Heat-insulating protective sleeves are sleeved on the outer surfaces of all connected cables and oxygen pipes to achieve overall high-temperature protection.

[0070] Please refer to Figure 3 and Figure 4 , for facilitating air supply, the air supply component includes a hollow shaft, a rotary joint 3-2, a fixed joint and an air supply hose. Among them, the hollow shaft is installed on the first side of the reel support 3-1 (such as Figure 4 the left side shown), the rotary joint 3-2 is communicated with the first end of the hollow shaft through a thread. The rotary joint 3-2 is used to connect the oxygen supply pipeline of the host. The fixed joint is communicated with the second end of the hollow shaft. The air supply hose is communicated with the fixed joint and the tail end pipe orifice of the fuel rod 7. The air supply hose is used to transport the oxygen in the hollow shaft to the fuel rod 7.

[0071] That is to say, the first side of the reel support 3-1 is a hollow shaft. The rotary joint 3-2 for receiving oxygen is installed on the outer side of the hollow shaft, and the inner side is connected to the tail end pipe orifice of the fuel through a hose. In this way, oxygen can be transported forward to the front end through the fuel itself. The oxygen provided by the oxygen supply pipeline of the host successively passes through the rotary joint 3-2, the hollow shaft, the fixed joint and the hose and reaches the fuel.

[0072] Please refer to Figure 5 , for facilitating feeding, the feeding component 4 includes a support seat 4-3, a driving wheel 4-4, a pressing wheel 4-6, a servo motor 4-1 and a speed reducer 4-2. Among them, the support seat 4-3 is fixed to the connecting frame 2. The driving wheel 4-4 is rotatably connected to the support seat 4-3. The servo motor 4-1 is connected to the speed reducer 4-2. The speed reducer 4-2 is connected to the driving wheel 4-4 to drive the driving wheel 4-4 to rotate. The pressing wheel 4-6 is arranged opposite to the driving wheel 4-4. The pressing wheel 4-6 is used to cooperate with the driving wheel 4-4 to provide the power for transporting the fuel rod 7.

[0073] In some embodiments, the pressing wheel 4-6 is movably mounted below the driving wheel 4-4. The feeding assembly 4 further includes an adjusting bolt 4-5. The gap between the pressing wheel 4-6 and the driving wheel 4-4 is adjusted by the adjusting bolt 4-5 to adjust the driving force of the driving wheel 4-4 on the fuel rod 7 and prevent slipping.

[0074] That is to say, the feeding assembly 4 is composed of a servo motor 4-1, a speed reducer 4-2, a driving wheel 4-4, a pressing wheel 4-6 and an adjusting bolt 4-5 mounted on the support base 4-3. The feeding speed is adjusted by adjusting the rotation speed of the servo motor 4-1, and the gap between the pressing wheel 4-6 and the driving wheel 4-4 is adjusted by the adjusting bolt 4-5, so as to adjust the driving force of the driving wheel 4-4 on the fuel rod 7 and ensure no slipping.

[0075] With this setting method, the gap between the pressing wheel 4-6 and the driving wheel 4-4 can be flexibly adjusted according to the actual working conditions, so that the entire feeding assembly 4 can better adapt to different working environments. For example, when there is local relaxation in the feeding assembly 4 or the center distance between the driving wheel 4-4 and the pressing wheel 4-6 changes, the normal pressing state can be restored by adjusting the gap, ensuring the stability of conveying. At the same time, this adjustable design can reduce system vibration. When the gap between the pressing wheel 4-6 and the driving wheel 4-4 is appropriate, it can effectively prevent the fuel rod 7 from jumping during operation, thereby improving the running stability of the entire system and extending the service life of the equipment.

[0076] Specifically, one end of the base where the pressing wheel 4-6 is located is rotatably connected to the support base 4-3 through a pin shaft. The pressing wheel 4-6 is located below the driving wheel 4-4. The other end of the base is positioned and installed through the adjusting bolt 4-5. The screw of the adjusting bolt 4-5 is connected to another pin shaft, and the base is fitted on the screw. At the same time, a wing nut is connected to the screw, and the wing nut is located below the base. By the threaded connection between the wing nut and the screw, the position of the base can be adjusted, so as to achieve the purpose of adjusting the gap between the pressing wheel 4-6 and the driving wheel 4-4.

[0077] With such a setting, the gap between the pressing wheel 4-6 and the driving wheel 4-4 is changed by adjusting the wing nut. When it is necessary to increase the pressing force, the wing nut can be screwed upward to make the base rotate upward around the pin shaft, reducing the gap between the pressing wheel 4-6 and the driving wheel 4-4, thereby increasing the pressing force. On the contrary, if it is necessary to reduce the pressing force, only the wing nut needs to be screwed downward, and the base rotates downward around the pin shaft, increasing the gap between the pressing wheel 4-6 and the driving wheel 4-4. This convenient adjustment method can adapt to the pressing force requirements under different working conditions, so as to timely adjust the pressing force to ensure the stable conveying of the feeding assembly 4.

[0078] Moreover, since the base is rotatably connected to the support seat 4-3 via a pin shaft and the other end is positioned and installed via an adjusting bolt 4-5, this structure makes the installation process of the entire device relatively simple. During installation, one end of the base can be connected to the support seat 4-3 with a pin shaft first, and then the other end of the base can be positioned by adjusting the adjusting bolt 4-5 and the wing nut. During maintenance, if it is necessary to repair or replace the pressing wheel 4-6 or the driving wheel 4-4, this adjustable connection method also provides convenience. For example, when the pressing wheel 4-6 is worn and needs to be replaced, the wing nut can be loosened, the position of the base can be adjusted, and the pressing wheel 4-6 can be conveniently taken out for replacement. Or the wing nut can also be directly unscrewed to make the base with the pressing wheel 4-6 fall, so as to facilitate the maintenance of the pressing wheel 4-6 or the driving wheel 4-4.

[0079] Please also refer to Figure 6 , the cutting head mechanism further includes a straightening assembly 5. The straightening assembly 5 is arranged between the feeding assembly 4 and the fuel reel 3. The straightening assembly 5 includes a straightening bracket 5-1 and at least two groups of straightening rollers 5-2. Among them, the straightening bracket 5-1 is fixed to the connecting frame 2, and at least two groups of straightening rollers 5-2 are rotatably connected to the straightening bracket 5-1. At least two groups of straightening rollers 5-2 are used to straighten the fuel rod 7 and then feed it into the feeding assembly 4.

[0080] In this way, when the front end of the fuel passes through the straightening assembly 5 and is straightened by the two groups of straightening rollers 5-2 installed on the straightening bracket 5-1, it is then conveyed forward through the feeding assembly 4.

[0081] In some embodiments, the cutting head mechanism further includes a pressing assembly 6. The pressing assembly 6 is arranged on the side of the straightening assembly 5 away from the feeding assembly 4. The pressing assembly 6 includes a pressing elastic member, and the pressing elastic member is used to abut against the fuel rod 7 on the fuel reel 3 to prevent the fuel rod 7 on the fuel reel 3 from being loose or sagging.

[0082] It can be understood that when the fuel wound on the reel is pulled forward by the driving wheel 4-4 and the pressing wheel 4-6 at the front, the reel will rotate accordingly. Since the reel has no brake, in order to prevent the reel from rotating too much and causing the fuel on the reel to be too loose or sagging, the pressing assembly 6 is used here to press the fuel.

[0083] In some embodiments, a current inductor is provided on the connection line of the ignition electrode 1-1. The current inductor is electrically connected to the control module. When the ignition electrode 1-1 contacts the fuel rod 7 to form a short circuit for ignition, the current inductor senses the current signal and transmits it to the control module, and the control module turns on the feeding assembly 4 and the gas supply assembly to enable the fuel rod 7 to start fueling.

[0084] It should be emphasized that in the automatic control design of fuel cutting in this application: the cable connecting the ignition electrode 1-1 passes through a current inductor (which can also be a current transmitter), and an electric control valve is installed on the oxygen supply pipeline. When the ignition electrode 1-1 contacts the fuel rod 7 and short-circuits for ignition, the current inductor senses the current and generates a signal that is transmitted to the control module. The control module quickly starts the servo motor 4-1 of the feeding component 4 to start automatic feeding, and at the same time opens the electric control valve of the oxygen supply pipeline to supply oxygen, and the fuel rod 7 starts to burn. Then the control module controls the ignition cylinder 1-5 to automatically retract backward to prevent the ignition electrode 1-1 from being burned out. When an input instruction stops the operation of the servo motor 4-1 to stop the forward extension of the fuel, the control module simultaneously automatically closes the electric control valve of the oxygen supply pipeline. Conversely, when an input instruction closes the electric control valve of the oxygen supply pipeline, the control module simultaneously automatically controls the stop of the operation of the servo motor 4-1 to stop the forward extension of the fuel.

[0085] In summary, adopting the cutting head mechanism of the flame cutting device of this application can bring the following beneficial effects:

[0086] First, through the control of the control module, remote automatic ignition of the flame cutting head device is achieved, and the ignition device automatically retracts and will not be burned.

[0087] Second, through the control of the control module, automatic feeding and oxygen supply are achieved after ignition.

[0088] Third, through the fuel reel 3, rapid installation of the fuel for cutting is achieved, and through the front-end component 1, the position of the fuel combustion head is ensured to be stable, enabling stable and precise cutting.

[0089] Fourth, high-temperature protection of the cutting head mechanism is also achieved, ensuring that the cutting head can operate continuously and reliably in a high-temperature environment.

[0090] A flame cutting device provided in this application includes a main body, and also includes the cutting head mechanism of the flame cutting device described in the above specific embodiments. The main body is connected to the cutting head mechanism; other parts of the flame cutting device can refer to the related art and will not be elaborated herein.

[0091] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0092] The cutting head mechanism and the flame cutting device of the flame cutting device provided in the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the solution and its core idea of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. The cutting head mechanism of a flame cutting device, characterized in that, Comprising: A connecting frame for connecting with the main body of the flame cutting device; A fuel reel, including a reel bracket for winding and unwinding fuel rods, the reel bracket being rotatably connected to the connecting frame, and an air supply assembly for supplying oxygen to the fuel rods being installed on the reel bracket; A front-end assembly provided on the side of the connecting frame away from the fuel reel, including an ignition electrode, a support frame, and an ignition cylinder. The ignition cylinder and the ignition electrode are provided on the support frame. The ignition cylinder is used to drive the ignition electrode to move relative to the support frame. The support frame is used for the fuel rod to pass through. The ignition electrode and the support frame are electrically connected to the positive and negative electrodes of the power supply of the main body respectively; A feeding assembly installed on the connecting frame and located between the front-end assembly and the fuel reel, for conveying the fuel rods on the fuel reel to the front-end assembly; A control module electrically connected to the feeding assembly, the ignition cylinder, and the air supply assembly, for controlling the opening and closing of the feeding assembly, the ignition cylinder, and the air supply assembly.

2. The cutting head mechanism of the flame cutting device according to claim 1, characterized in that, The front-end assembly further includes: An insulating plate fixed to one end of the support frame away from the connecting frame, for electrically isolating the ignition electrode from the support frame; A guide sleeve passing through the insulating plate, for the fuel rod to pass through and form a standby state; 3. The cutting head mechanism of the flame cutting device according to claim 2, characterized in that, A vision module for monitoring the material cutting state is provided on one side of the insulating plate close to the connecting frame; The front-end assembly further includes a spray pipe provided in the support frame. The spray pipe is used to communicate with the water supply pipeline of the main body to spray cooling water to the vision module and the ignition cylinder.

4. The cutting head mechanism of the flame cutting device according to claim 1, characterized in that, The air supply assembly includes: A hollow shaft installed on the first side of the reel bracket; A rotary joint communicated with the first end of the hollow shaft, for connecting the oxygen supply pipeline of the main body; A fixed joint communicated with the second end of the hollow shaft; An air supply hose communicated with the fixed joint and the nozzle at the tail end of the fuel rod, for conveying the oxygen in the hollow shaft to the fuel rod.

5. The cutting head mechanism of the flame cutting device according to claim 1, characterized in that, The feeding assembly includes: A support seat fixed to the connecting frame; A driving wheel rotatably connected to the support seat; A servo motor and a speed reducer. The servo motor is connected to the speed reducer, and the speed reducer is connected to the driving wheel to drive the driving wheel to rotate; A pressing wheel arranged opposite to the driving wheel, for cooperating with the driving wheel to provide the power for conveying the fuel rod.

6. The cutting head mechanism of the flame cutting device according to claim 5, characterized in that, The pressing wheel is movably installed below the driving wheel. The feeding assembly further includes an adjusting bolt, and the gap between the pressing wheel and the driving wheel is adjusted through the adjusting bolt to adjust the driving force of the driving wheel on the fuel rod and prevent slipping.

7. The cutting head mechanism of the flame cutting device according to any one of claims 1-6, characterized in that, The cutting head mechanism further includes a straightening assembly provided between the feeding assembly and the fuel reel. The straightening assembly includes: A straightening bracket fixed to the connecting frame; At least two groups of straightening rollers rotatably connected to the straightening bracket, for straightening the fuel rod and then feeding it into the feeding assembly.

8. The cutting head mechanism of the flame cutting device according to claim 7, characterized in that, The cutting head mechanism further includes a material pressing component, which is arranged on the side of the straightening component away from the feeding component. The material pressing component is used to abut against the fuel rods on the fuel reel to prevent the fuel rods on the fuel reel from loosening or sagging.

9. The cutting head mechanism of the flame cutting device according to any one of claims 1-6, characterized in that, A current inductor is provided on the connection line of the ignition electrode. The current inductor is electrically connected to the control module. When the ignition electrode contacts the fuel rod to form a short circuit for ignition, the current inductor senses the current signal and transmits it to the control module, and the control module activates the feeding component and the air supply component to enable the fuel rod to start burning.

10. A flame cutting device, characterized in that, It includes the cutting head mechanism according to any one of claims 1-9.

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