An external arc ignition device for a semi-automatic flame cutting machine

Abstract

The utility model provides a kind of external electric arc ignition device of semi-automatic flame cutting machine, comprising: shell, with cutting machine connection;Adapter, it is set on shell, and the adapter is connected with the power supply of cutting machine;Ignition module, it is installed in the shell, and the ignition module is electrically connected with the adapter, and the ignition module is used to cutting machine ignition.By shell and cutting machine connection, the adapter of access cutting machine power supply, and the ignition module powered by adapter, it is realized to replace manual open fire ignition with electric arc ignition operating mode, effectively avoid the situation that operator is directly contacted with flame in the process of taking fire source, with open fire ignition, eliminate the burn risk that manual open fire ignition can cause.

Description

Technical Field

[0001] This utility model relates to the field of steel material processing technology, and in particular to an external arc ignition device for a semi-automatic flame cutting machine. Background Technology

[0002] After the steel plate is rolled, the burrs need to be removed, and the length and width need to be cut according to the ordered dimensions. Thicker or higher strength steel plates cannot be cut using mechanical shearing equipment; in these cases, flame cutting must be used.

[0003] Semi-automatic flame cutting machines (hereinafter referred to as cutting machines) are widely used in medium and heavy plate cutting operations. Their basic principle is to pre-draw lines on the steel plate according to the required dimensions, and then arrange the track according to the drawn lines. The electric carriage of the cutting machine drives the flame cutting device to move at a constant speed on the track to achieve the cutting of the steel plate as needed.

[0004] However, some current cutting machine models require manual ignition with an open flame after adjusting the nozzle angle and airflow, posing a certain risk of burns. Furthermore, the process of obtaining a fire source and igniting the machine takes time, impacting production efficiency. Utility Model Content

[0005] This invention provides an external arc ignition device for a semi-automatic flame cutting machine to solve the problems of existing semi-automatic flame cutting machines requiring manual ignition with an open flame, which poses a risk of burns and has low ignition efficiency.

[0006] This utility model provides an external arc ignition device for a semi-automatic flame cutting machine, comprising:

[0007] The housing connects to the cutting machine;

[0008] An adapter is mounted on the housing and is connected to the power supply of the cutting machine;

[0009] An ignition module is installed in the housing and is electrically connected to the adapter. The ignition module is used to ignite the cutting machine.

[0010] In one embodiment of the present invention, an isolation and voltage reduction module is provided inside the housing. The isolation and voltage reduction module is connected between the adapter and the ignition module. The isolation and voltage reduction module is used to convert the AC power connected to the ignition module by the adapter into DC power.

[0011] In one embodiment of this utility model, the isolation step-down module is an AC-DC step-down module.

[0012] In one embodiment of the present invention, the ignition module includes an ignition lead and an igniter. The ignition lead is connected to the isolation and voltage reduction module, and the igniter is connected to the ignition lead. The igniter is used to ignite the gas ejected from the cutting nozzle of the cutting machine.

[0013] In one embodiment of this utility model, the igniter is a pulse igniter.

[0014] In one embodiment of the present invention, the ignition module further includes an ignition switch, which is used to control the start and stop of the igniter.

[0015] In one embodiment of the present invention, a magnetic base is further included, which is connected to the housing and is used for magnetic connection with the cutting machine.

[0016] In one embodiment of this utility model, the magnetic base is provided with a magnetic switch, which is used for connecting and disconnecting the magnetic base from the cutting machine.

[0017] In one embodiment of the present invention, a brass partition is provided between the housing and the magnetic base.

[0018] In one embodiment of the present invention, the housing is provided with a plurality of bolt through holes, and the cutting machine is provided with a threaded connection hole. The housing and the cutting machine are connected by bolts passing through the bolt through holes and threadedly connected to the threaded connection hole.

[0019] The beneficial effects of this utility model are as follows: The external arc ignition device for a semi-automatic flame cutting machine proposed in this utility model, through the connection between the housing and the cutting machine, the adapter connected to the power supply of the cutting machine, and the ignition module powered by the adapter, realizes the operation mode of replacing manual open flame ignition with arc ignition. This effectively avoids the situation where the operator comes into direct contact with the flame during the process of obtaining the fire source and igniting with an open flame, and eliminates the risk of burns that may be caused by manual open flame ignition. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0021] In the attached diagram:

[0022] Figure 1 A schematic diagram of the structure of an external arc ignition device connected to a magnetic base in a semi-automatic flame cutting machine provided in an embodiment of this utility model;

[0023] Figure 2 A cross-sectional view of the external arc ignition device connected to a magnetic base in a semi-automatic flame cutting machine provided in an embodiment of this utility model.

[0024] Figure 3 This is a schematic diagram of the structure of the external arc ignition device with bolt connection provided in one embodiment of the present invention for a semi-automatic flame cutting machine.

[0025] The attached figures are labeled as follows:

[0026] 1. Housing; 2. Adapter; 3. Ignition module; 3. Ignition lead wire; 301. Ignition device; 302. Ignition switch; 303. Magnetic base; 4. Magnetic switch; 401. Brass partition; 5. Bolt; 6. Isolation voltage reduction module; 7. Heat insulation layer; 8. Arc electrode; 9. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0029] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0030] Please combine Figures 1 to 3 As shown, this utility model provides an external arc ignition device for a semi-automatic flame cutting machine.

[0031] In one exemplary embodiment of this application, the external arc ignition device for a semi-automatic flame cutting machine includes:

[0032] The housing 1 is connected to the magnetic base 4 by bolts 6 (four in total), and the magnetic base 4 is connected to the cutting machine by magnetic force;

[0033] Adapter 2 is mounted on housing 1 and is electrically connected to isolation step-down module 7 inside housing. Adapter 2 is also connected to the power supply of the cutting machine.

[0034] Ignition module 3 is installed inside housing 1 and is electrically connected to isolation step-down module 7. Isolation step-down module 7 is electrically connected to adapter 2. Ignition module 3 is used to ignite the cutting machine.

[0035] In this embodiment, the housing 1 is connected to the cutting machine via the magnetic base 4 and the adapter 2 that connects to the power supply of the cutting machine, the isolation step-down module 7 powered by the adapter 2, and the ignition module 3 electrically connected to the isolation step-down module 7. This realizes the operation mode of replacing manual open flame ignition with electric arc ignition, effectively avoiding the situation where the operator comes into direct contact with the flame during the process of taking the fire source and using open flame ignition, and eliminating the risk of burns that may be caused by manual open flame ignition.

[0036] In an exemplary embodiment of this application, the housing 1 is provided with an isolation step-down module 7, which is connected between the adapter 2 and the ignition module 3. The isolation step-down module 7 is used to convert the AC power connected to the adapter 2 into DC power to power the igniter 302 in the ignition module 3.

[0037] In this embodiment, the ignition module 3 is powered directly from the power supply device of the cutting machine via an adapter 2. An isolation step-down module 7 is installed between the ignition module 3 and the adapter 2. After the 380V AC power from the cutting machine power supply is connected to the isolation step-down module 7 inside the housing 1, the voltage is first reduced by a switching power supply, then converted to pulsed DC power by a full-bridge rectifier circuit. High-frequency ripple is filtered out by an electrolytic capacitor, transforming the pulsating DC into a more stable DC. The isolation step-down module 7 then stabilizes the voltage to 5V. DC boosting generates a pulsed arc: the DC power is inverted into a high-frequency AC signal. The high-frequency AC signal is input to a high-frequency transformer, where high-voltage AC is induced in the secondary coil through magnetic coupling. The secondary high-voltage AC is rectified by a silicon stack and a capacitor voltage multiplier circuit, progressively superimposed to form an even higher DC voltage. The current flows through the arc lead to the discharge electrode, breaking down the air between the electrodes to generate an arc, thereby igniting the gas ejected from the cutting nozzle.

[0038] In an exemplary embodiment of this application, the isolation step-down module 7 is an AC-DC step-down module.

[0039] In this embodiment, the AC-DC step-down module can convert the alternating current (AC) supplied from the power supply of the cutting machine into the output direct current (DC), while simultaneously reducing and regulating the voltage so that the output DC voltage is adapted to the working requirements of the ignition module 3. It also includes the dual functions of rectification and step-down.

[0040] In an exemplary embodiment of this application, the ignition module 3 includes an ignition lead 301 and an igniter 302. The ignition lead 301 is connected to the isolation and voltage reduction module 7, and the igniter 302 is connected to the ignition lead 301. The igniter 302 is used to ignite the gas ejected from the cutting nozzle of the cutting machine.

[0041] In this embodiment, after the device is connected to the power supply of the cutting machine, the power introduced by the adapter 2 is converted into DC power adapted to the working requirements of the ignition module 3 by the isolation step-down module 7, and transmitted to the igniter 302 through the ignition lead 301. The igniter 302 converts the DC power output by the isolation step-down module 7 into a high-voltage pulse current to achieve discharge. Under the power drive, the igniter 302 causes the arc electrode 9 located outside the housing 1 to generate an arc or spark. The arc electrode 9 is set to face the gas ejection path of the cutting machine nozzle. When the cutting machine nozzle ejects gas, the arc or spark generated by the arc electrode 9 will instantly ignite the gas, completing the ignition action.

[0042] In an exemplary embodiment of this application, the igniter 302 is a pulse igniter 302.

[0043] In this embodiment, the pulse igniter 302 can generate a high-frequency, high-energy pulse arc, which can release sufficient energy in a short time. Even when the gas concentration fluctuates or the airflow is unstable, it can quickly ignite the gas sprayed from the nozzle, reduce the probability of ignition failure, ensure that the ignition action is successful on the first attempt, and improve the reliability of the ignition process.

[0044] In an exemplary embodiment of this application, the ignition module 3 further includes an ignition switch 303, which is used to control the start and stop of the igniter 302.

[0045] In this embodiment, by setting an ignition switch 303, the ignition device can flexibly control the start and stop of the igniter 302 according to actual operation needs. The operator can trigger ignition only after confirming that the gas is being sprayed out normally from the nozzle, avoiding ignition failure due to insufficient gas supply caused by premature ignition, or excessive gas accumulation caused by delayed ignition, thus effectively improving the accuracy of ignition timing.

[0046] In one exemplary embodiment of this application, a magnetic base 4 is also included. The magnetic base 4 is connected to the housing 1 and is used for magnetic connection with the cutting machine.

[0047] In this embodiment, the magnetic base 4 achieves quick connection with the cutting machine through magnetic force, simplifying the fixing operation between the device and the cutting machine and improving the convenience and efficiency of installation. When it is necessary to disassemble, repair or replace the device, the magnetic connection can also be directly separated, avoiding the cumbersome disassembly of methods such as bolt connection 6, effectively improving the convenience of device assembly and disassembly.

[0048] In an exemplary embodiment of this application, a magnetic base 4 is provided with a magnetic base switch 401, which is used for connecting and disconnecting the magnetic base 4 from the cutting machine.

[0049] In this embodiment, the magnetic base switch 401 is connected to the magnetic force generating component (such as a permanent magnet or electromagnetic component) of the magnetic base 4, changing the magnetic characteristics of the magnetic base 4 through its switching state. When the device needs to be fixed to the cutting machine, the operator closes the magnetic base switch 401. At this time, the magnetic base switch 401 triggers the magnetic force generating component inside the magnetic base 4, such as releasing the magnetic force path of the permanent magnet or supplying power to the electromagnetic component, causing the magnetic base 4 to generate a strong attraction force, thereby tightly adhering to the metal surface of the cutting machine and achieving stable fixation of the device. When it is necessary to move, adjust, or disassemble the device, the operator disconnects the magnetic base switch 401. The magnetic base switch 401 cuts off the magnetic force generating component of the magnetic base 4, weakening or eliminating the attraction force of the magnetic base 4, thus easily separating the device from the cutting machine for easy position adjustment or removal of the device.

[0050] In an exemplary embodiment of this application, a brass partition 5 is provided between the housing 1 and the magnetic base 4.

[0051] In this embodiment, brass has good electrical and thermal conductivity. By setting a brass partition 5 between the housing 1 and the magnetic base 4, an isolation barrier is formed. When the device is working, the igniter 302 may generate electromagnetic interference when it produces an electric arc. The brass partition 5 guides and disperses these interference currents through its own conductivity, preventing them from being conducted to the magnetic base 4 and avoiding electromagnetic interference or safety hazards to the electrical system of the cutting machine. In addition, the brass partition 5 can quickly conduct and diffuse the local heat generated when the ignition module 3 is working, reducing the accumulation of heat at the connection between the housing 1 and the magnetic base 4, and preventing high temperature from affecting the magnetic stability of the magnetic base 4 or the working state of the internal components of the housing 1.

[0052] In an exemplary embodiment of this application, the housing 1 is provided with a plurality of bolt 6 through holes, and the cutting machine is provided with a threaded connection hole. The housing 1 and the cutting machine are threadedly connected by bolts 6 passing through the bolt 6 through holes and the threaded connection hole.

[0053] In this embodiment, multiple bolt 6 through holes are pre-machined on the housing 1. The diameter of the bolt 6 through holes matches the outer diameter of the selected connecting bolt 6, ensuring that the bolt 6 can pass through smoothly. Simultaneously, threaded connection holes matching the bolt 6 specifications are machined at the corresponding installation position on the cutting machine. When the ignition device needs to be installed, the operator aligns the bolt 6 through holes on the housing 1 with the threaded connection holes on the cutting machine, passes the connecting bolt 6 through the bolt 6 through holes on the housing 1, aligns it with the threaded connection holes on the cutting machine, and tightens it, thereby achieving a fixed connection between the ignition device and the cutting machine. When the device needs to be disassembled for maintenance or replacement, the connecting bolt 6 is loosened in the reverse direction, disengaging it from the threaded connection hole, allowing the bolt 6 to be removed from the through hole, thus separating the device from the cutting machine.

[0054] In another exemplary embodiment, the housing 1 is provided with a heat insulation layer 8. The heat insulation layer 8 can reduce the heat radiated by the steel plate during flame cutting operations and the heat from other surrounding heat sources entering the housing 1. This prevents the internal components from aging due to long-term exposure to high temperatures, ensures accurate power conversion and reliable ignition control, and reduces the probability of ignition failure or device malfunction caused by abnormal temperature.

[0055] Working principle: The ignition device connects to the power supply of the cutting machine via adapter 2, introducing the AC power from the cutting machine into the device. The introduced AC power enters the isolation and step-down module 7, which converts the AC power into DC power required by the ignition module 3, adjusts the voltage to the voltage required for the operation of the ignition module 3, and outputs a stable DC power supply. After the operator confirms that the cutting nozzle is spraying gas normally, they close the ignition switch 303 to start the ignition process. The DC power processed by the isolation and step-down module 7 is transmitted to the igniter 302 through the ignition lead 301. The igniter 302 generates a high-frequency, high-energy pulse arc that acts on the gas path sprayed from the cutting nozzle, thereby igniting the gas and completing the ignition action. After ignition, the ignition switch 303 is turned off, and the igniter 302 stops working, waiting for the next ignition command.

[0056] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An external arc ignition device for a semi-automatic flame cutting machine, characterized in that, include: The housing connects to the cutting machine; An adapter is mounted on the housing and is connected to the power supply of the cutting machine; An ignition module is installed in the housing and is electrically connected to the adapter. The ignition module is used to ignite the cutting machine.

2. The external arc ignition device for the semi-automatic flame cutting machine according to claim 1, characterized in that: The housing contains an isolation step-down module, which is connected between the adapter and the ignition module. The isolation step-down module is used to convert the AC power connected to the ignition module by the adapter into DC power.

3. The external arc ignition device for the semi-automatic flame cutting machine according to claim 2, characterized in that: The isolation step-down module is an AC-DC step-down module.

4. The external arc ignition device for the semi-automatic flame cutting machine according to claim 2, characterized in that: The ignition module includes an ignition lead and an igniter. The ignition lead is connected to the isolation and voltage reduction module, and the igniter is connected to the ignition lead. The igniter is used to ignite the gas ejected from the cutting nozzle of the cutting machine.

5. The external arc ignition device for the semi-automatic flame cutting machine according to claim 4, characterized in that: The igniter is a pulse igniter.

6. The external arc ignition device for the semi-automatic flame cutting machine according to claim 4, characterized in that: The ignition module also includes an ignition switch, which is used to control the start and stop of the igniter.

7. The external arc ignition device for the semi-automatic flame cutting machine according to claim 1, characterized in that: It also includes a magnetic base, which is connected to the housing and is used for magnetic connection with the cutting machine.

8. The external arc ignition device for the semi-automatic flame cutting machine according to claim 7, characterized in that: The magnetic base is equipped with a magnetic switch, which is used to connect and disconnect the magnetic base from the cutting machine.

9. The external arc ignition device for the semi-automatic flame cutting machine according to claim 8, characterized in that: A brass partition is provided between the housing and the magnetic base.

10. The external arc ignition device for the semi-automatic flame cutting machine according to claim 1, characterized in that: The housing has multiple bolt holes, and the cutting machine has threaded connection holes. The housing and the cutting machine are connected by bolts passing through the bolt holes and threaded connection holes.

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